+++ /dev/null
-(* 'top'-like tool for libvirt domains.
- (C) Copyright 2007-2009 Richard W.M. Jones, Red Hat Inc.
- http://libvirt.org/
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*)
-
-open Printf
-open ExtList
-open Curses
-
-open Virt_top_gettext.Gettext
-open Virt_top_utils
-
-module C = Libvirt.Connect
-module D = Libvirt.Domain
-module N = Libvirt.Network
-
-let rcfile = ".virt-toprc"
-
-(* Hook for XML support (see virt_top_xml.ml). *)
-let parse_device_xml : (int -> [>`R] D.t -> string list * string list) ref =
- ref (
- fun _ _ -> [], []
- )
-
-(* Hooks for CSV support (see virt_top_csv.ml). *)
-let csv_start : (string -> unit) ref =
- ref (
- fun _ -> failwith (s_"virt-top was compiled without support for CSV files")
- )
-let csv_write : (string list -> unit) ref =
- ref (
- fun _ -> ()
- )
-
-(* Hook for calendar support (see virt_top_calendar.ml). *)
-let parse_date_time : (string -> float) ref =
- ref (
- fun _ ->
- failwith (s_"virt-top was compiled without support for dates and times")
- )
-
-(* Sort order. *)
-type sort_order =
- | DomainID | DomainName | Processor | Memory | Time
- | NetRX | NetTX | BlockRdRq | BlockWrRq
-let all_sort_fields = [
- DomainID; DomainName; Processor; Memory; Time;
- NetRX; NetTX; BlockRdRq; BlockWrRq
-]
-let printable_sort_order = function
- | Processor -> s_"%CPU"
- | Memory -> s_"%MEM"
- | Time -> s_"TIME (CPU time)"
- | DomainID -> s_"Domain ID"
- | DomainName -> s_"Domain name"
- | NetRX -> s_"Net RX bytes"
- | NetTX -> s_"Net TX bytes"
- | BlockRdRq -> s_"Block read reqs"
- | BlockWrRq -> s_"Block write reqs"
-let sort_order_of_cli = function
- | "cpu" | "processor" -> Processor
- | "mem" | "memory" -> Memory
- | "time" -> Time
- | "id" -> DomainID
- | "name" -> DomainName
- | "netrx" -> NetRX | "nettx" -> NetTX
- | "blockrdrq" -> BlockRdRq | "blockwrrq" -> BlockWrRq
- | str ->
- failwithf (f_"%s: sort order should be: %s")
- str "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq"
-let cli_of_sort_order = function
- | Processor -> "cpu"
- | Memory -> "mem"
- | Time -> "time"
- | DomainID -> "id"
- | DomainName -> "name"
- | NetRX -> "netrx"
- | NetTX -> "nettx"
- | BlockRdRq -> "blockrdrq"
- | BlockWrRq -> "blockwrrq"
-
-(* Current major display mode: TaskDisplay is the normal display. *)
-type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
-
-let display_of_cli = function
- | "task" -> TaskDisplay
- | "pcpu" -> PCPUDisplay
- | "block" -> BlockDisplay
- | "net" -> NetDisplay
- | str ->
- failwithf (f_"%s: display should be %s") str "task|pcpu|block|net"
-let cli_of_display = function
- | TaskDisplay -> "task"
- | PCPUDisplay -> "pcpu"
- | BlockDisplay -> "block"
- | NetDisplay -> "net"
-
-(* Init file. *)
-type init_file = NoInitFile | DefaultInitFile | InitFile of string
-
-(* Settings. *)
-let quit = ref false
-let delay = ref 3000 (* milliseconds *)
-let historical_cpu_delay = ref 20 (* secs *)
-let iterations = ref (-1)
-let end_time = ref None
-let batch_mode = ref false
-let secure_mode = ref false
-let sort_order = ref Processor
-let display_mode = ref TaskDisplay
-let uri = ref None
-let debug_file = ref ""
-let csv_enabled = ref false
-let csv_cpu = ref true
-let csv_mem = ref true
-let csv_block = ref true
-let csv_net = ref true
-let init_file = ref DefaultInitFile
-let script_mode = ref false
-let stream_mode = ref false
-let block_in_bytes = ref false
-
-(* Tuple of never-changing data returned by start_up function. *)
-type setup =
- Libvirt.ro C.t * bool * bool * bool * bool * C.node_info * string *
- (int * int * int)
-
-(* Function to read command line arguments and go into curses mode. *)
-let start_up () =
- (* Read command line arguments. *)
- let rec set_delay newdelay =
- if newdelay <= 0. then
- failwith (s_"-d: cannot set a negative delay");
- delay := int_of_float (newdelay *. 1000.)
- and set_uri = function "" -> uri := None | u -> uri := Some u
- and set_sort order = sort_order := sort_order_of_cli order
- and set_pcpu_mode () = display_mode := PCPUDisplay
- and set_net_mode () = display_mode := NetDisplay
- and set_block_mode () = display_mode := BlockDisplay
- and set_csv filename =
- (!csv_start) filename;
- csv_enabled := true
- and no_init_file () = init_file := NoInitFile
- and set_init_file filename = init_file := InitFile filename
- and set_end_time time = end_time := Some ((!parse_date_time) time)
- and display_version () =
- printf "virt-top %s ocaml-libvirt %s\n"
- Virt_top_version.version Libvirt_version.version;
- exit 0
- in
- let argspec = Arg.align [
- "-1", Arg.Unit set_pcpu_mode,
- " " ^ s_"Start by displaying pCPUs (default: tasks)";
- "-2", Arg.Unit set_net_mode,
- " " ^ s_"Start by displaying network interfaces";
- "-3", Arg.Unit set_block_mode,
- " " ^ s_"Start by displaying block devices";
- "-b", Arg.Set batch_mode,
- " " ^ s_"Batch mode";
- "-c", Arg.String set_uri,
- "uri " ^ s_"Connect to libvirt URI";
- "--connect", Arg.String set_uri,
- "uri " ^ s_"Connect to libvirt URI";
- "--csv", Arg.String set_csv,
- "file " ^ s_"Log statistics to CSV file";
- "--no-csv-cpu", Arg.Clear csv_cpu,
- " " ^ s_"Disable CPU stats in CSV";
- "--no-csv-mem", Arg.Clear csv_mem,
- " " ^ s_"Disable memory stats in CSV";
- "--no-csv-block", Arg.Clear csv_block,
- " " ^ s_"Disable block device stats in CSV";
- "--no-csv-net", Arg.Clear csv_net,
- " " ^ s_"Disable net stats in CSV";
- "-d", Arg.Float set_delay,
- "delay " ^ s_"Delay time interval (seconds)";
- "--debug", Arg.Set_string debug_file,
- "file " ^ s_"Send debug messages to file";
- "--end-time", Arg.String set_end_time,
- "time " ^ s_"Exit at given time";
- "--hist-cpu", Arg.Set_int historical_cpu_delay,
- "secs " ^ s_"Historical CPU delay";
- "--init-file", Arg.String set_init_file,
- "file " ^ s_"Set name of init file";
- "--no-init-file", Arg.Unit no_init_file,
- " " ^ s_"Do not read init file";
- "-n", Arg.Set_int iterations,
- "iterations " ^ s_"Number of iterations to run";
- "-o", Arg.String set_sort,
- "sort " ^ sprintf (f_"Set sort order (%s)")
- "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq";
- "-s", Arg.Set secure_mode,
- " " ^ s_"Secure (\"kiosk\") mode";
- "--script", Arg.Set script_mode,
- " " ^ s_"Run from a script (no user interface)";
- "--stream", Arg.Set stream_mode,
- " " ^ s_"dump output to stdout (no userinterface)";
- "--block-in-bytes", Arg.Set block_in_bytes,
- " " ^ s_"show block device load in bytes rather than reqs";
- "--version", Arg.Unit display_version,
- " " ^ s_"Display version number and exit";
- ] in
- let anon_fun str =
- raise (Arg.Bad (sprintf (f_"%s: unknown parameter") str)) in
- let usage_msg = s_"virt-top : a 'top'-like utility for virtualization
-
-SUMMARY
- virt-top [-options]
-
-OPTIONS" in
- Arg.parse argspec anon_fun usage_msg;
-
- (* Read the init file. *)
- let try_to_read_init_file filename =
- let config = read_config_file filename in
- (* Replacement functions that raise better errors when
- * parsing the init file.
- *)
- let int_of_string s =
- try int_of_string s
- with Invalid_argument _ ->
- failwithf (f_"%s: could not parse '%s' in init file: expecting an integer")
- filename s in
- let float_of_string s =
- try float_of_string s
- with Invalid_argument _ ->
- failwithf (f_"%s: could not parse '%s' in init file: expecting a number")
- filename s in
- let bool_of_string s =
- try bool_of_string s
- with Invalid_argument _ ->
- failwithf (f_"%s: could not parse '%s' in init file: expecting %s")
- filename s "true|false" in
- List.iter (
- function
- | _, "display", mode -> display_mode := display_of_cli mode
- | _, "delay", secs -> set_delay (float_of_string secs)
- | _, "hist-cpu", secs -> historical_cpu_delay := int_of_string secs
- | _, "iterations", n -> iterations := int_of_string n
- | _, "sort", order -> set_sort order
- | _, "connect", uri -> set_uri uri
- | _, "debug", filename -> debug_file := filename
- | _, "csv", filename -> set_csv filename
- | _, "csv-cpu", b -> csv_cpu := bool_of_string b
- | _, "csv-mem", b -> csv_mem := bool_of_string b
- | _, "csv-block", b -> csv_block := bool_of_string b
- | _, "csv-net", b -> csv_net := bool_of_string b
- | _, "batch", b -> batch_mode := bool_of_string b
- | _, "secure", b -> secure_mode := bool_of_string b
- | _, "script", b -> script_mode := bool_of_string b
- | _, "stream", b -> stream_mode := bool_of_string b
- | _, "block-in-bytes", b -> block_in_bytes := bool_of_string b
- | _, "end-time", t -> set_end_time t
- | _, "overwrite-init-file", "false" -> no_init_file ()
- | lineno, key, _ ->
- eprintf (f_"%s:%d: configuration item ``%s'' ignored\n%!")
- filename lineno key
- ) config
- in
- (match !init_file with
- | NoInitFile -> ()
- | DefaultInitFile ->
- let home = try Sys.getenv "HOME" with Not_found -> "/" in
- let filename = home // rcfile in
- try_to_read_init_file filename
- | InitFile filename ->
- try_to_read_init_file filename
- );
-
- (* Connect to the hypervisor before going into curses mode, since
- * this is the most likely thing to fail.
- *)
- let conn =
- let name = !uri in
- try C.connect_readonly ?name ()
- with
- Libvirt.Virterror err ->
- prerr_endline (Libvirt.Virterror.to_string err);
- (* If non-root and no explicit connection URI, print a warning. *)
- if Unix.geteuid () <> 0 && name = None then (
- print_endline (s_"NB: If you want to monitor a local hypervisor, you usually need to be root");
- );
- exit 1 in
-
- (* Get the node_info. This never changes, right? So we get it just once. *)
- let node_info = C.get_node_info conn in
-
- (* Hostname and libvirt library version also don't change. *)
- let hostname =
- try C.get_hostname conn
- with
- (* qemu:/// and other URIs didn't support virConnectGetHostname until
- * libvirt 0.3.3. Before that they'd throw a virterror. *)
- | Libvirt.Virterror _
- | Libvirt.Not_supported "virConnectGetHostname" -> "unknown" in
-
- let libvirt_version =
- let v, _ = Libvirt.get_version () in
- v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
-
- (* Open debug file if specified.
- * NB: Do this just before jumping into curses mode.
- *)
- (match !debug_file with
- | "" -> (* No debug file specified, send stderr to /dev/null unless
- * we're in script mode.
- *)
- if not !script_mode && not !stream_mode then (
- let fd = Unix.openfile "/dev/null" [Unix.O_WRONLY] 0o644 in
- Unix.dup2 fd Unix.stderr;
- Unix.close fd
- )
- | filename -> (* Send stderr to the named file. *)
- let fd =
- Unix.openfile filename [Unix.O_WRONLY;Unix.O_CREAT;Unix.O_TRUNC]
- 0o644 in
- Unix.dup2 fd Unix.stderr;
- Unix.close fd
- );
-
- (* Curses voodoo (see ncurses(3)). *)
- if not !script_mode && not !stream_mode then (
- ignore (initscr ());
- ignore (cbreak ());
- ignore (noecho ());
- nonl ();
- let stdscr = stdscr () in
- ignore (intrflush stdscr false);
- ignore (keypad stdscr true);
- ()
- );
-
- (* This tuple of static information is called 'setup' in other parts
- * of this program, and is passed to other functions such as redraw and
- * main_loop. See virt_top_main.ml.
- *)
- (conn,
- !batch_mode, !script_mode, !csv_enabled, !stream_mode, (* immutable modes *)
- node_info, hostname, libvirt_version (* info that doesn't change *)
- )
-
-(* Show a domain state (the 'S' column). *)
-let show_state = function
- | D.InfoNoState -> '?'
- | D.InfoRunning -> 'R'
- | D.InfoBlocked -> 'S'
- | D.InfoPaused -> 'P'
- | D.InfoShutdown -> 'D'
- | D.InfoShutoff -> 'O'
- | D.InfoCrashed -> 'X'
-
-(* Sleep in seconds. *)
-let sleep = Unix.sleep
-
-(* Sleep in milliseconds. *)
-let millisleep n =
- ignore (Unix.select [] [] [] (float n /. 1000.))
-
-(* The curses getstr/getnstr functions are just weird.
- * This helper function also enables echo temporarily.
- *)
-let get_string maxlen =
- ignore (echo ());
- let str = String.create maxlen in
- let ok = getstr str in (* Safe because binding calls getnstr. *)
- ignore (noecho ());
- if not ok then ""
- else (
- (* Chop at first '\0'. *)
- try
- let i = String.index str '\000' in
- String.sub str 0 i
- with
- Not_found -> str (* it is full maxlen bytes *)
- )
-
-(* Line numbers. *)
-let top_lineno = 0
-let summary_lineno = 1 (* this takes 2 lines *)
-let message_lineno = 3
-let header_lineno = 4
-let domains_lineno = 5
-
-(* Easier to use versions of curses functions addstr, mvaddstr, etc. *)
-let move y x = ignore (move y x)
-let refresh () = ignore (refresh ())
-let addch c = ignore (addch (int_of_char c))
-let addstr s = ignore (addstr s)
-let mvaddstr y x s = ignore (mvaddstr y x s)
-
-(* Print in the "message area". *)
-let clear_msg () = move message_lineno 0; clrtoeol ()
-let print_msg str = clear_msg (); mvaddstr message_lineno 0 str
-
-(* Intermediate "domain + stats" structure that we use to collect
- * everything we know about a domain within the collect function.
- *)
-type rd_domain = Inactive | Active of rd_active
-and rd_active = {
- rd_domid : int; (* Domain ID. *)
- rd_dom : [`R] D.t; (* Domain object. *)
- rd_info : D.info; (* Domain CPU info now. *)
- rd_block_stats : (string * D.block_stats) list;
- (* Domain block stats now. *)
- rd_interface_stats : (string * D.interface_stats) list;
- (* Domain net stats now. *)
- rd_prev_info : D.info option; (* Domain CPU info previously. *)
- rd_prev_block_stats : (string * D.block_stats) list;
- (* Domain block stats prev. *)
- rd_prev_interface_stats : (string * D.interface_stats) list;
- (* Domain interface stats prev. *)
- (* The following are since the last slice, or 0 if cannot be calculated: *)
- rd_cpu_time : float; (* CPU time used in nanoseconds. *)
- rd_percent_cpu : float; (* CPU time as percent of total. *)
- rd_mem_bytes : int64; (* Memory usage in bytes *)
- rd_mem_percent: int64; (* Memory usage as percent of total *)
- (* The following are since the last slice, or None if cannot be calc'd: *)
- rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
- rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
- rd_block_rd_bytes : int64 option; (* Number of bytes block device read *)
- rd_block_wr_bytes : int64 option; (* Number of bytes block device write *)
- (* _info fields includes the number considering --block_in_bytes option *)
- rd_block_rd_info : int64 option; (* Block device read info for user *)
- rd_block_wr_info : int64 option; (* Block device read info for user *)
-
- rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
- rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
-}
-
-(* Collect stats. *)
-let collect, clear_pcpu_display_data =
- (* We cache the list of block devices and interfaces for each domain
- * here, so we don't need to reparse the XML each time.
- *)
- let devices = Hashtbl.create 13 in
-
- (* Function to get the list of block devices, network interfaces for
- * a particular domain. Get it from the devices cache, and if not
- * there then parse the domain XML.
- *)
- let get_devices id dom =
- try Hashtbl.find devices id
- with Not_found ->
- let blkdevs, netifs = (!parse_device_xml) id dom in
- Hashtbl.replace devices id (blkdevs, netifs);
- blkdevs, netifs
- in
-
- (* We save the state of domains across redraws here, which allows us
- * to deduce %CPU usage from the running total.
- *)
- let last_info = Hashtbl.create 13 in
- let last_time = ref (Unix.gettimeofday ()) in
-
- (* Save pcpu_usages structures across redraws too (only for pCPU display). *)
- let last_pcpu_usages = Hashtbl.create 13 in
-
- let clear_pcpu_display_data () =
- (* Clear out pcpu_usages used by PCPUDisplay display_mode
- * when we switch back to TaskDisplay mode.
- *)
- Hashtbl.clear last_pcpu_usages
- in
-
- let collect (conn, _, _, _, _, node_info, _, _) =
- (* Number of physical CPUs (some may be disabled). *)
- let nr_pcpus = C.maxcpus_of_node_info node_info in
-
- (* Get the current time. *)
- let time = Unix.gettimeofday () in
- let tm = Unix.localtime time in
- let printable_time =
- sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
-
- (* What's the total CPU time elapsed since we were last called? (ns) *)
- let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
- (* Avoid division by zero. *)
- let total_cpu_per_pcpu =
- if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
- let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
-
- (* Get the domains. Match up with their last_info (if any). *)
- let doms =
- (* Active domains. *)
- let n = C.num_of_domains conn in
- let ids =
- if n > 0 then Array.to_list (C.list_domains conn n)
- else [] in
- let doms =
- List.filter_map (
- fun id ->
- try
- let dom = D.lookup_by_id conn id in
- let name = D.get_name dom in
- let blkdevs, netifs = get_devices id dom in
-
- (* Get current CPU, block and network stats. *)
- let info = D.get_info dom in
- let block_stats =
- try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
- with
- | Libvirt.Not_supported "virDomainBlockStats"
- | Libvirt.Virterror _ -> [] in
- let interface_stats =
- try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
- with
- | Libvirt.Not_supported "virDomainInterfaceStats"
- | Libvirt.Virterror _ -> [] in
-
- let prev_info, prev_block_stats, prev_interface_stats =
- try
- let prev_info, prev_block_stats, prev_interface_stats =
- Hashtbl.find last_info id in
- Some prev_info, prev_block_stats, prev_interface_stats
- with Not_found -> None, [], [] in
-
- Some (name, Active {
- rd_domid = id; rd_dom = dom; rd_info = info;
- rd_block_stats = block_stats;
- rd_interface_stats = interface_stats;
- rd_prev_info = prev_info;
- rd_prev_block_stats = prev_block_stats;
- rd_prev_interface_stats = prev_interface_stats;
- rd_cpu_time = 0.; rd_percent_cpu = 0.;
- rd_mem_bytes = 0L; rd_mem_percent = 0L;
- rd_block_rd_reqs = None; rd_block_wr_reqs = None;
- rd_block_rd_bytes = None; rd_block_wr_bytes = None;
- rd_block_rd_info = None; rd_block_wr_info = None;
- rd_net_rx_bytes = None; rd_net_tx_bytes = None;
- })
- with
- Libvirt.Virterror _ -> None (* ignore transient error *)
- ) ids in
-
- (* Inactive domains. *)
- let doms_inactive =
- try
- let n = C.num_of_defined_domains conn in
- let names =
- if n > 0 then Array.to_list (C.list_defined_domains conn n)
- else [] in
- List.map (fun name -> name, Inactive) names
- with
- (* Ignore transient errors, in particular errors from
- * num_of_defined_domains if it cannot contact xend.
- *)
- | Libvirt.Virterror _ -> [] in
-
- doms @ doms_inactive in
-
- (* Calculate the CPU time (ns) and %CPU used by each domain. *)
- let doms =
- List.map (
- function
- (* We have previous CPU info from which to calculate it? *)
- | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
- let cpu_time =
- Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
- let percent_cpu = 100. *. cpu_time /. total_cpu in
- let mem_usage = rd.rd_info.D.memory in
- let mem_percent =
- 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
- let rd = { rd with
- rd_cpu_time = cpu_time;
- rd_percent_cpu = percent_cpu;
- rd_mem_bytes = mem_usage;
- rd_mem_percent = mem_percent} in
- name, Active rd
- (* For all other domains we can't calculate it, so leave as 0 *)
- | rd -> rd
- ) doms in
-
- (* Calculate the number of block device read/write requests across
- * all block devices attached to a domain.
- *)
- let doms =
- List.map (
- function
- (* Do we have stats from the previous slice? *)
- | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
- as rd) ->
- let block_stats = rd.rd_block_stats in (* stats now *)
-
- (* Add all the devices together. Throw away device names. *)
- let prev_block_stats =
- sum_block_stats (List.map snd prev_block_stats) in
- let block_stats =
- sum_block_stats (List.map snd block_stats) in
-
- (* Calculate increase in read & write requests. *)
- let read_reqs =
- block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
- let write_reqs =
- block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
- let read_bytes =
- block_stats.D.rd_bytes -^ prev_block_stats.D.rd_bytes in
- let write_bytes =
- block_stats.D.wr_bytes -^ prev_block_stats.D.wr_bytes in
-
- let rd = { rd with
- rd_block_rd_reqs = Some read_reqs;
- rd_block_wr_reqs = Some write_reqs;
- rd_block_rd_bytes = Some read_bytes;
- rd_block_wr_bytes = Some write_bytes;
- } in
- let rd = { rd with
- rd_block_rd_info = if !block_in_bytes then
- rd.rd_block_rd_bytes else rd.rd_block_rd_reqs;
- rd_block_wr_info = if !block_in_bytes then
- rd.rd_block_wr_bytes else rd.rd_block_wr_reqs;
- } in
- name, Active rd
- (* For all other domains we can't calculate it, so leave as None. *)
- | rd -> rd
- ) doms in
-
- (* Calculate the same as above for network interfaces across
- * all network interfaces attached to a domain.
- *)
- let doms =
- List.map (
- function
- (* Do we have stats from the previous slice? *)
- | name, Active ({ rd_prev_interface_stats =
- ((_::_) as prev_interface_stats) }
- as rd) ->
- let interface_stats = rd.rd_interface_stats in (* stats now *)
-
- (* Add all the devices together. Throw away device names. *)
- let prev_interface_stats =
- sum_interface_stats (List.map snd prev_interface_stats) in
- let interface_stats =
- sum_interface_stats (List.map snd interface_stats) in
-
- (* Calculate increase in rx & tx bytes. *)
- let rx_bytes =
- interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
- let tx_bytes =
- interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
-
- let rd = { rd with
- rd_net_rx_bytes = Some rx_bytes;
- rd_net_tx_bytes = Some tx_bytes } in
- name, Active rd
- (* For all other domains we can't calculate it, so leave as None. *)
- | rd -> rd
- ) doms in
-
- (* Collect some extra information in PCPUDisplay display_mode. *)
- let pcpu_display =
- if !display_mode = PCPUDisplay then (
- (* Get the VCPU info and VCPU->PCPU mappings for active domains.
- * Also cull some data we don't care about.
- *)
- let doms = List.filter_map (
- function
- | (name, Active rd) ->
- (try
- let domid = rd.rd_domid in
- let maplen = C.cpumaplen nr_pcpus in
- let cpu_stats = D.get_cpu_stats rd.rd_dom in
-
- (* Note the terminology is confusing.
- *
- * In libvirt, cpu_time is the total time (hypervisor + vCPU).
- * vcpu_time is the time only taken by the vCPU,
- * excluding time taken inside the hypervisor.
- *
- * For each pCPU, libvirt may return either "cpu_time"
- * or "vcpu_time" or neither or both. This function
- * returns an array pair [|cpu_time, vcpu_time|];
- * if either is missing it is returned as 0.
- *)
- let find_cpu_usages params =
- let rec find_uint64_field name = function
- | (n, D.TypedFieldUInt64 usage) :: _ when n = name -> usage
- | _ :: params -> find_uint64_field name params
- | [] -> 0L
- in
- [| find_uint64_field "cpu_time" params;
- find_uint64_field "vcpu_time" params |]
- in
-
- let pcpu_usages = Array.map find_cpu_usages cpu_stats in
- let maxinfo = rd.rd_info.D.nr_virt_cpu in
- let nr_vcpus, vcpu_infos, cpumaps =
- D.get_vcpus rd.rd_dom maxinfo maplen in
-
- (* Got previous pcpu_usages for this domain? *)
- let prev_pcpu_usages =
- try Some (Hashtbl.find last_pcpu_usages domid)
- with Not_found -> None in
- (* Update last_pcpu_usages. *)
- Hashtbl.replace last_pcpu_usages domid pcpu_usages;
-
- (match prev_pcpu_usages with
- | Some prev_pcpu_usages
- when Array.length prev_pcpu_usages = Array.length pcpu_usages ->
- Some (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
- prev_pcpu_usages, cpumaps, maplen)
- | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
- );
- with
- Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
- )
- | (_, Inactive) -> None (* ignore inactive doms *)
- ) doms in
- let nr_doms = List.length doms in
-
- (* Rearrange the data into a matrix. Major axis (down) is
- * pCPUs. Minor axis (right) is domains. At each node we store:
- * cpu_time hypervisor + domain (on this pCPU only, nanosecs),
- * vcpu_time domain only (on this pCPU only, nanosecs).
- *)
- let make_3d_array dimx dimy dimz e =
- Array.init dimx (fun _ -> Array.make_matrix dimy dimz e)
- in
- let pcpus = make_3d_array nr_pcpus nr_doms 2 0L in
-
- List.iteri (
- fun di (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
- prev_pcpu_usages, cpumaps, maplen) ->
- (* Which pCPUs can this dom run on? *)
- for p = 0 to Array.length pcpu_usages - 1 do
- pcpus.(p).(di).(0) <-
- pcpu_usages.(p).(0) -^ prev_pcpu_usages.(p).(0);
- pcpus.(p).(di).(1) <-
- pcpu_usages.(p).(1) -^ prev_pcpu_usages.(p).(1)
- done
- ) doms;
-
- (* Sum the total CPU time used by each pCPU, for the %CPU column. *)
- let pcpus_cpu_time = Array.map (
- fun row ->
- let cpu_time = ref 0L in
- for di = 0 to Array.length row-1 do
- let t = row.(di).(0) in
- cpu_time := !cpu_time +^ t
- done;
- Int64.to_float !cpu_time
- ) pcpus in
-
- Some (doms, pcpus, pcpus_cpu_time)
- ) else
- None in
-
- (* Calculate totals. *)
- let totals = List.fold_left (
- fun (count, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive,
- total_cpu_time, total_memory, total_domU_memory) ->
- function
- | (name, Active rd) ->
- let test state orig =
- if rd.rd_info.D.state = state then orig+1 else orig
- in
- let running = test D.InfoRunning running in
- let blocked = test D.InfoBlocked blocked in
- let paused = test D.InfoPaused paused in
- let shutdown = test D.InfoShutdown shutdown in
- let shutoff = test D.InfoShutoff shutoff in
- let crashed = test D.InfoCrashed crashed in
-
- let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
- let total_memory = total_memory +^ rd.rd_info.D.memory in
- let total_domU_memory = total_domU_memory +^
- if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
-
- (count+1, running, blocked, paused, shutdown, shutoff,
- crashed, active+1, inactive,
- total_cpu_time, total_memory, total_domU_memory)
-
- | (name, Inactive) -> (* inactive domain *)
- (count+1, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive+1,
- total_cpu_time, total_memory, total_domU_memory)
- ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
-
- (* Update last_time, last_info. *)
- last_time := time;
- Hashtbl.clear last_info;
- List.iter (
- function
- | (_, Active rd) ->
- let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
- Hashtbl.add last_info rd.rd_domid info
- | _ -> ()
- ) doms;
-
- (doms,
- time, printable_time,
- nr_pcpus, total_cpu, total_cpu_per_pcpu,
- totals,
- pcpu_display)
- in
-
- collect, clear_pcpu_display_data
-
-(* Redraw the display. *)
-let redraw =
- (* Keep a historical list of %CPU usages. *)
- let historical_cpu = ref [] in
- let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
- fun
- (_, _, _, _, _, node_info, _, _) (* setup *)
- (doms,
- time, printable_time,
- nr_pcpus, total_cpu, total_cpu_per_pcpu,
- totals,
- pcpu_display) (* state *) ->
- clear ();
-
- (* Get the screen/window size. *)
- let lines, cols = get_size () in
-
- (* Time. *)
- mvaddstr top_lineno 0 (sprintf "virt-top %s - " printable_time);
-
- (* Basic node_info. *)
- addstr
- (sprintf "%s %d/%dCPU %dMHz %LdMB "
- node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
- (node_info.C.memory /^ 1024L));
- (* Save the cursor position for when we come to draw the
- * historical CPU times (down in this function).
- *)
- let stdscr = stdscr () in
- let historical_cursor = getyx stdscr in
-
- (match !display_mode with
- | TaskDisplay -> (*---------- Showing domains ----------*)
- (* Sort domains on current sort_order. *)
- let doms =
- let cmp =
- match !sort_order with
- | DomainName ->
- (fun _ -> 0) (* fallthrough to default name compare *)
- | Processor ->
- (function
- | Active rd1, Active rd2 ->
- compare rd2.rd_percent_cpu rd1.rd_percent_cpu
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | Memory ->
- (function
- | Active { rd_info = info1 }, Active { rd_info = info2 } ->
- compare info2.D.memory info1.D.memory
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | Time ->
- (function
- | Active { rd_info = info1 }, Active { rd_info = info2 } ->
- compare info2.D.cpu_time info1.D.cpu_time
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | DomainID ->
- (function
- | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
- compare id1 id2
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | NetRX ->
- (function
- | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | NetTX ->
- (function
- | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | BlockRdRq ->
- (function
- | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | BlockWrRq ->
- (function
- | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- in
- let cmp (name1, dom1) (name2, dom2) =
- let r = cmp (dom1, dom2) in
- if r <> 0 then r
- else compare name1 name2
- in
- List.sort ~cmp doms in
-
- (* Print domains. *)
- attron A.reverse;
- let header_string = if !block_in_bytes
- then " ID S RDBY WRBY RXBY TXBY %CPU %MEM TIME NAME"
- else " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"
- in
- mvaddstr header_lineno 0
- (pad cols header_string);
- attroff A.reverse;
-
- let rec loop lineno = function
- | [] -> ()
- | (name, Active rd) :: doms ->
- if lineno < lines then (
- let state = show_state rd.rd_info.D.state in
- let rd_req = Show.int64_option rd.rd_block_rd_info in
- let wr_req = Show.int64_option rd.rd_block_wr_info in
- let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
- let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
- let percent_cpu = Show.percent rd.rd_percent_cpu in
- let percent_mem = Int64.to_float rd.rd_mem_percent in
- let percent_mem = Show.percent percent_mem in
- let time = Show.time rd.rd_info.D.cpu_time in
-
- let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
- rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
- percent_cpu percent_mem time name in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) doms
- )
- | (name, Inactive) :: doms -> (* inactive domain *)
- if lineno < lines then (
- let line =
- sprintf
- " - (%s)"
- name in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) doms
- )
- in
- loop domains_lineno doms
-
- | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
- let doms, pcpus, pcpus_cpu_time =
- match pcpu_display with
- | Some p -> p
- | None -> failwith "internal error: no pcpu_display data" in
-
- (* Display the pCPUs. *)
- let dom_names =
- String.concat "" (
- List.map (
- fun (_, name, _, _, _, _, _, _) ->
- let len = String.length name in
- let width = max (len+1) 12 in
- pad width name
- ) doms
- ) in
- attron A.reverse;
- mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names));
- attroff A.reverse;
-
- Array.iteri (
- fun p row ->
- mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p);
- let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
- let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
- addstr (Show.percent percent_cpu);
- addch ' ';
-
- List.iteri (
- fun di (domid, name, _, _, _, _, _, _) ->
- let t = pcpus.(p).(di).(0) in (* hypervisor + domain *)
- let t_only = pcpus.(p).(di).(1) in (* domain only *)
- let len = String.length name in
- let width = max (len+1) 12 in
- let str_t =
- if t <= 0L then ""
- else (
- let t = Int64.to_float t in
- let percent = 100. *. t /. total_cpu_per_pcpu in
- Show.percent percent
- ) in
- let str_t_only =
- if t_only <= 0L then ""
- else (
- let t_only = Int64.to_float t_only in
- let percent = 100. *. t_only /. total_cpu_per_pcpu in
- Show.percent percent
- ) in
- addstr (pad 5 str_t);
- addstr (pad 5 str_t_only);
- addstr (pad (width-10) " ");
- ()
- ) doms
- ) pcpus;
-
- | NetDisplay -> (*---------- Showing network interfaces ----------*)
- (* Only care about active domains. *)
- let doms = List.filter_map (
- function
- | (name, Active rd) -> Some (name, rd)
- | (_, Inactive) -> None
- ) doms in
-
- (* For each domain we have a list of network interfaces seen
- * this slice, and seen in the previous slice, which we now
- * match up to get a list of (domain, interface) for which
- * we have current & previous knowledge. (And ignore the rest).
- *)
- let devs =
- List.map (
- fun (name, rd) ->
- List.filter_map (
- fun (dev, stats) ->
- try
- (* Have prev slice stats for this device? *)
- let prev_stats =
- List.assoc dev rd.rd_prev_interface_stats in
- Some (dev, name, rd, stats, prev_stats)
- with Not_found -> None
- ) rd.rd_interface_stats
- ) doms in
-
- (* Finally we have a list of:
- * device name, domain name, rd_* stuff, curr stats, prev stats.
- *)
- let devs : (string * string * rd_active *
- D.interface_stats * D.interface_stats) list =
- List.flatten devs in
-
- (* Difference curr slice & prev slice. *)
- let devs = List.map (
- fun (dev, name, rd, curr, prev) ->
- dev, name, rd, diff_interface_stats curr prev
- ) devs in
-
- (* Sort by current sort order, but map some of the standard
- * sort orders into ones which makes sense here.
- *)
- let devs =
- let cmp =
- match !sort_order with
- | DomainName ->
- (fun _ -> 0) (* fallthrough to default name compare *)
- | DomainID ->
- (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
- compare id1 id2)
- | Processor | Memory | Time | BlockRdRq | BlockWrRq
- (* fallthrough to RXBY comparison. *)
- | NetRX ->
- (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
- compare b2 b1)
- | NetTX ->
- (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
- compare b2 b1)
- in
- let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
- let r = cmp (stats1, rd1, stats2, rd2) in
- if r <> 0 then r
- else compare (dev1, name1) (dev2, name2)
- in
- List.sort ~cmp devs in
-
- (* Print the header for network devices. *)
- attron A.reverse;
- mvaddstr header_lineno 0
- (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE");
- attroff A.reverse;
-
- (* Print domains and devices. *)
- let rec loop lineno = function
- | [] -> ()
- | (dev, name, rd, stats) :: devs ->
- if lineno < lines then (
- let state = show_state rd.rd_info.D.state in
- let rx_bytes =
- if stats.D.rx_bytes >= 0L
- then Show.int64 stats.D.rx_bytes
- else " " in
- let tx_bytes =
- if stats.D.tx_bytes >= 0L
- then Show.int64 stats.D.tx_bytes
- else " " in
- let rx_packets =
- if stats.D.rx_packets >= 0L
- then Show.int64 stats.D.rx_packets
- else " " in
- let tx_packets =
- if stats.D.tx_packets >= 0L
- then Show.int64 stats.D.tx_packets
- else " " in
-
- let line = sprintf "%5d %c %s %s %s %s %-12s %s"
- rd.rd_domid state
- rx_bytes tx_bytes
- rx_packets tx_packets
- (pad 12 name) dev in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) devs
- )
- in
- loop domains_lineno devs
-
- | BlockDisplay -> (*---------- Showing block devices ----------*)
- (* Only care about active domains. *)
- let doms = List.filter_map (
- function
- | (name, Active rd) -> Some (name, rd)
- | (_, Inactive) -> None
- ) doms in
-
- (* For each domain we have a list of block devices seen
- * this slice, and seen in the previous slice, which we now
- * match up to get a list of (domain, device) for which
- * we have current & previous knowledge. (And ignore the rest).
- *)
- let devs =
- List.map (
- fun (name, rd) ->
- List.filter_map (
- fun (dev, stats) ->
- try
- (* Have prev slice stats for this device? *)
- let prev_stats =
- List.assoc dev rd.rd_prev_block_stats in
- Some (dev, name, rd, stats, prev_stats)
- with Not_found -> None
- ) rd.rd_block_stats
- ) doms in
-
- (* Finally we have a list of:
- * device name, domain name, rd_* stuff, curr stats, prev stats.
- *)
- let devs : (string * string * rd_active *
- D.block_stats * D.block_stats) list =
- List.flatten devs in
-
- (* Difference curr slice & prev slice. *)
- let devs = List.map (
- fun (dev, name, rd, curr, prev) ->
- dev, name, rd, diff_block_stats curr prev
- ) devs in
-
- (* Sort by current sort order, but map some of the standard
- * sort orders into ones which makes sense here.
- *)
- let devs =
- let cmp =
- match !sort_order with
- | DomainName ->
- (fun _ -> 0) (* fallthrough to default name compare *)
- | DomainID ->
- (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
- compare id1 id2)
- | Processor | Memory | Time | NetRX | NetTX
- (* fallthrough to RDRQ comparison. *)
- | BlockRdRq ->
- (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
- compare b2 b1)
- | BlockWrRq ->
- (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
- compare b2 b1)
- in
- let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
- let r = cmp (stats1, rd1, stats2, rd2) in
- if r <> 0 then r
- else compare (dev1, name1) (dev2, name2)
- in
- List.sort ~cmp devs in
-
- (* Print the header for block devices. *)
- attron A.reverse;
- mvaddstr header_lineno 0
- (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE");
- attroff A.reverse;
-
- (* Print domains and devices. *)
- let rec loop lineno = function
- | [] -> ()
- | (dev, name, rd, stats) :: devs ->
- if lineno < lines then (
- let state = show_state rd.rd_info.D.state in
- let rd_bytes =
- if stats.D.rd_bytes >= 0L
- then Show.int64 stats.D.rd_bytes
- else " " in
- let wr_bytes =
- if stats.D.wr_bytes >= 0L
- then Show.int64 stats.D.wr_bytes
- else " " in
- let rd_req =
- if stats.D.rd_req >= 0L
- then Show.int64 stats.D.rd_req
- else " " in
- let wr_req =
- if stats.D.wr_req >= 0L
- then Show.int64 stats.D.wr_req
- else " " in
-
- let line = sprintf "%5d %c %s %s %s %s %-12s %s"
- rd.rd_domid state
- rd_bytes wr_bytes
- rd_req wr_req
- (pad 12 name) dev in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) devs
- )
- in
- loop domains_lineno devs
- ); (* end of display_mode conditional section *)
-
- let (count, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive,
- total_cpu_time, total_memory, total_domU_memory) = totals in
-
- mvaddstr summary_lineno 0
- (sprintf
- (f_"%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
- count active running blocked paused inactive shutdown shutoff crashed);
-
- (* Total %CPU used, and memory summary. *)
- let percent_cpu = 100. *. total_cpu_time /. total_cpu in
- mvaddstr (summary_lineno+1) 0
- (sprintf
- (f_"CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
- percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L));
-
- (* Time to grab another historical %CPU for the list? *)
- if time >= !historical_cpu_last_time +. float !historical_cpu_delay
- then (
- historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
- historical_cpu_last_time := time
- );
-
- (* Display historical CPU time. *)
- let () =
- let y, x = historical_cursor in
- let maxwidth = cols - x in
- let line =
- String.concat " "
- (List.map (sprintf "%2.1f%%") !historical_cpu) in
- let line = pad maxwidth line in
- mvaddstr y x line;
- () in
-
- move message_lineno 0; (* Park cursor in message area, as with top. *)
- refresh () (* Refresh the display. *)
-
-(* Write CSV header row. *)
-let write_csv_header () =
- (!csv_write) (
- [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
- "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
- "Shutoff"; "Crashed"; "Active"; "Inactive";
- "%CPU";
- "Total hardware memory (KB)";
- "Total memory (KB)"; "Total guest memory (KB)";
- "Total CPU time (ns)" ] @
- (* These fields are repeated for each domain: *)
- [ "Domain ID"; "Domain name"; ] @
- (if !csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
- (if !csv_mem then [ "Mem (bytes)"; "%Mem";] else []) @
- (if !csv_block && not !block_in_bytes
- then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
- (if !csv_block && !block_in_bytes
- then [ "Block RDBY"; "Block WRBY"; ] else []) @
- (if !csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
- )
-
-(* Write summary data to CSV file. *)
-let append_csv
- (_, _, _, _, _, node_info, hostname, _) (* setup *)
- (doms,
- _, printable_time,
- nr_pcpus, total_cpu, _,
- totals,
- _) (* state *) =
-
- (* The totals / summary fields. *)
- let (count, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive,
- total_cpu_time, total_memory, total_domU_memory) = totals in
-
- let percent_cpu = 100. *. total_cpu_time /. total_cpu in
-
- let summary_fields = [
- hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
- string_of_int count; string_of_int running; string_of_int blocked;
- string_of_int paused; string_of_int shutdown; string_of_int shutoff;
- string_of_int crashed; string_of_int active; string_of_int inactive;
- sprintf "%2.1f" percent_cpu;
- Int64.to_string node_info.C.memory;
- Int64.to_string total_memory; Int64.to_string total_domU_memory;
- Int64.to_string (Int64.of_float total_cpu_time)
- ] in
-
- (* The domains.
- *
- * Sort them by ID so that the list of relatively stable. Ignore
- * inactive domains.
- *)
- let doms = List.filter_map (
- function
- | _, Inactive -> None (* Ignore inactive domains. *)
- | name, Active rd -> Some (name, rd)
- ) doms in
- let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
- compare rd_domid1 rd_domid2
- in
- let doms = List.sort ~cmp doms in
-
- let string_of_int64_option = Option.map_default Int64.to_string "" in
-
- let domain_fields = List.map (
- fun (domname, rd) ->
- [ string_of_int rd.rd_domid; domname ] @
- (if !csv_cpu then [
- string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
- ] else []) @
- (if !csv_mem then [
- Int64.to_string rd.rd_mem_bytes; Int64.to_string rd.rd_mem_percent
- ] else []) @
- (if !csv_block then [
- string_of_int64_option rd.rd_block_rd_info;
- string_of_int64_option rd.rd_block_wr_info;
- ] else []) @
- (if !csv_net then [
- string_of_int64_option rd.rd_net_rx_bytes;
- string_of_int64_option rd.rd_net_tx_bytes;
- ] else [])
- ) doms in
- let domain_fields = List.flatten domain_fields in
-
- (!csv_write) (summary_fields @ domain_fields)
-
-let dump_stdout
- (_, _, _, _, _, node_info, hostname, _) (* setup *)
- (doms,
- _, printable_time,
- nr_pcpus, total_cpu, _,
- totals,
- _) (* state *) =
-
- (* Header for this iteration *)
- printf "virt-top time %s Host %s %s %d/%dCPU %dMHz %LdMB \n"
- printable_time hostname node_info.C.model node_info.C.cpus nr_pcpus
- node_info.C.mhz (node_info.C.memory /^ 1024L);
- (* dump domain information one by one *)
- let rd, wr = if !block_in_bytes then "RDBY", "WRBY" else "RDRQ", "WRRQ"
- in
- printf " ID S %s %s RXBY TXBY %%CPU %%MEM TIME NAME\n" rd wr;
-
- (* sort by ID *)
- let doms =
- let compare =
- (function
- | Active {rd_domid = id1 }, Active {rd_domid = id2} ->
- compare id1 id2
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- in
- let cmp (name1, dom1) (name2, dom2) = compare(dom1, dom2) in
- List.sort ~cmp doms in
- (*Print domains *)
- let dump_domain = fun name rd
- -> begin
- let state = show_state rd.rd_info.D.state in
- let rd_req = if rd.rd_block_rd_info = None then " 0"
- else Show.int64_option rd.rd_block_rd_info in
- let wr_req = if rd.rd_block_wr_info = None then " 0"
- else Show.int64_option rd.rd_block_wr_info in
- let rx_bytes = if rd.rd_net_rx_bytes = None then " 0"
- else Show.int64_option rd.rd_net_rx_bytes in
- let tx_bytes = if rd.rd_net_tx_bytes = None then " 0"
- else Show.int64_option rd.rd_net_tx_bytes in
- let percent_cpu = Show.percent rd.rd_percent_cpu in
- let percent_mem = Int64.to_float rd.rd_mem_percent in
- let percent_mem = Show.percent percent_mem in
- let time = Show.time rd.rd_info.D.cpu_time in
- printf "%5d %c %s %s %s %s %s %s %s %s\n"
- rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
- percent_cpu percent_mem time name;
- end
- in
- List.iter (
- function
- | name, Active dom -> dump_domain name dom
- | name, Inactive -> ()
- ) doms;
- flush stdout
-
-(* Main loop. *)
-let rec main_loop ((_, batch_mode, script_mode, csv_enabled, stream_mode, _, _, _)
- as setup) =
- if csv_enabled then write_csv_header ();
-
- while not !quit do
- let state = collect setup in (* Collect stats. *)
- (* Redraw display. *)
- if not script_mode && not stream_mode then redraw setup state;
- if csv_enabled then append_csv setup state; (* Update CSV file. *)
- if stream_mode then dump_stdout setup state; (* dump to stdout *)
-
- (* Clear up unused virDomainPtr objects. *)
- Gc.compact ();
-
- (* Max iterations? *)
- if !iterations >= 0 then (
- decr iterations;
- if !iterations = 0 then quit := true
- );
-
- (* End time? We might need to adjust the precise delay down if
- * the delay would be longer than the end time (RHBZ#637964). Note
- * 'delay' is in milliseconds.
- *)
- let delay =
- match !end_time with
- | None ->
- (* No --end-time option, so use the current delay. *)
- !delay
- | Some end_time ->
- let (_, time, _, _, _, _, _, _) = state in
- let delay_secs = float !delay /. 1000. in
- if end_time <= time +. delay_secs then (
- quit := true;
- let delay = int_of_float (1000. *. (end_time -. time)) in
- if delay >= 0 then delay else 0
- ) else
- !delay in
- (*eprintf "adjusted delay = %d\n%!" delay;*)
-
- (* Get next key. This does the sleep. *)
- if not batch_mode && not script_mode && not stream_mode then
- get_key_press setup delay
- else (
- (* Batch mode, script mode, stream mode. We didn't call
- * get_key_press, so we didn't sleep. Sleep now, unless we are
- * about to quit.
- *)
- if not !quit || !end_time <> None then
- millisleep delay
- )
- done
-
-and get_key_press setup delay =
- (* Read the next key, waiting up to 'delay' milliseconds. *)
- timeout delay;
- let k = getch () in
- timeout (-1); (* Reset to blocking mode. *)
-
- if k >= 0 && k <> 32 (* ' ' *) && k <> 12 (* ^L *) && k <> Key.resize
- then (
- if k = Char.code 'q' then quit := true
- else if k = Char.code 'h' then show_help setup
- else if k = Char.code 's' || k = Char.code 'd' then change_delay ()
- else if k = Char.code 'M' then sort_order := Memory
- else if k = Char.code 'P' then sort_order := Processor
- else if k = Char.code 'T' then sort_order := Time
- else if k = Char.code 'N' then sort_order := DomainID
- else if k = Char.code 'F' then change_sort_order ()
- else if k = Char.code '0' then set_tasks_display ()
- else if k = Char.code '1' then toggle_pcpu_display ()
- else if k = Char.code '2' then toggle_net_display ()
- else if k = Char.code '3' then toggle_block_display ()
- else if k = Char.code 'W' then write_init_file ()
- else if k = Char.code 'B' then toggle_block_in_bytes_mode ()
- else unknown_command k
- )
-
-and change_delay () =
- print_msg
- (sprintf (f_"Change delay from %.1f to: ") (float !delay /. 1000.));
- let str = get_string 16 in
- (* Try to parse the number. *)
- let error =
- try
- let newdelay = float_of_string str in
- if newdelay <= 0. then (
- print_msg (s_"Delay must be > 0"); true
- ) else (
- delay := int_of_float (newdelay *. 1000.); false
- )
- with
- Failure "float_of_string" ->
- print_msg (s_"Not a valid number"); true in
- refresh ();
- sleep (if error then 2 else 1)
-
-and change_sort_order () =
- clear ();
- let lines, cols = get_size () in
-
- mvaddstr top_lineno 0 (s_"Set sort order for main display");
- mvaddstr summary_lineno 0 (s_"Type key or use up and down cursor keys.");
-
- attron A.reverse;
- mvaddstr header_lineno 0 (pad cols "KEY Sort field");
- attroff A.reverse;
-
- let accelerator_key = function
- | Memory -> "(key: M)"
- | Processor -> "(key: P)"
- | Time -> "(key: T)"
- | DomainID -> "(key: N)"
- | _ -> (* all others have to be changed from here *) ""
- in
-
- let rec key_of_int = function
- | i when i < 10 -> Char.chr (i + Char.code '0')
- | i when i < 20 -> Char.chr (i + Char.code 'a')
- | _ -> assert false
- and int_of_key = function
- | k when k >= 0x30 && k <= 0x39 (* '0' - '9' *) -> k - 0x30
- | k when k >= 0x61 && k <= 0x7a (* 'a' - 'j' *) -> k - 0x61 + 10
- | k when k >= 0x41 && k <= 0x6a (* 'A' - 'J' *) -> k - 0x41 + 10
- | _ -> -1
- in
-
- (* Display possible sort fields. *)
- let selected_index = ref 0 in
- List.iteri (
- fun i ord ->
- let selected = !sort_order = ord in
- if selected then selected_index := i;
- mvaddstr (domains_lineno+i) 0
- (sprintf " %c %s %s %s"
- (key_of_int i) (if selected then "*" else " ")
- (printable_sort_order ord)
- (accelerator_key ord))
- ) all_sort_fields;
-
- move message_lineno 0;
- refresh ();
- let k = getch () in
- if k >= 0 && k <> 32 && k <> Char.code 'q' && k <> 13 then (
- let new_order, loop =
- (* Redraw the display. *)
- if k = 12 (* ^L *) then None, true
- (* Make the UP and DOWN arrow keys do something useful. *)
- else if k = Key.up then (
- if !selected_index > 0 then
- Some (List.nth all_sort_fields (!selected_index-1)), true
- else
- None, true
- )
- else if k = Key.down then (
- if !selected_index < List.length all_sort_fields - 1 then
- Some (List.nth all_sort_fields (!selected_index+1)), true
- else
- None, true
- )
- (* Also understand the regular accelerator keys. *)
- else if k = Char.code 'M' then
- Some Memory, false
- else if k = Char.code 'P' then
- Some Processor, false
- else if k = Char.code 'T' then
- Some Time, false
- else if k = Char.code 'N' then
- Some DomainID, false
- else (
- (* It's one of the KEYs. *)
- let i = int_of_key k in
- if i >= 0 && i < List.length all_sort_fields then
- Some (List.nth all_sort_fields i), false
- else
- None, true
- ) in
-
- (match new_order with
- | None -> ()
- | Some new_order ->
- sort_order := new_order;
- print_msg (sprintf "Sort order changed to: %s"
- (printable_sort_order new_order));
- if not loop then (
- refresh ();
- sleep 1
- )
- );
-
- if loop then change_sort_order ()
- )
-
-(* Note: We need to clear_pcpu_display_data every time
- * we _leave_ PCPUDisplay mode.
- *)
-and set_tasks_display () = (* key 0 *)
- if !display_mode = PCPUDisplay then clear_pcpu_display_data ();
- display_mode := TaskDisplay
-
-and toggle_pcpu_display () = (* key 1 *)
- display_mode :=
- match !display_mode with
- | TaskDisplay | NetDisplay | BlockDisplay -> PCPUDisplay
- | PCPUDisplay -> clear_pcpu_display_data (); TaskDisplay
-
-and toggle_net_display () = (* key 2 *)
- display_mode :=
- match !display_mode with
- | PCPUDisplay -> clear_pcpu_display_data (); NetDisplay
- | TaskDisplay | BlockDisplay -> NetDisplay
- | NetDisplay -> TaskDisplay
-
-and toggle_block_display () = (* key 3 *)
- display_mode :=
- match !display_mode with
- | PCPUDisplay -> clear_pcpu_display_data (); BlockDisplay
- | TaskDisplay | NetDisplay -> BlockDisplay
- | BlockDisplay -> TaskDisplay
-
-and toggle_block_in_bytes_mode () = (* key B *)
- block_in_bytes :=
- match !block_in_bytes with
- | false -> true
- | true -> false
-
-(* Write an init file. *)
-and write_init_file () =
- match !init_file with
- | NoInitFile -> () (* Do nothing if --no-init-file *)
- | DefaultInitFile ->
- let home = try Sys.getenv "HOME" with Not_found -> "/" in
- let filename = home // rcfile in
- _write_init_file filename
- | InitFile filename ->
- _write_init_file filename
-
-and _write_init_file filename =
- try
- (* Create the new file as filename.new. *)
- let chan = open_out (filename ^ ".new") in
-
- let time = Unix.gettimeofday () in
- let tm = Unix.localtime time in
- let printable_date_time =
- sprintf "%04d-%02d-%02d %02d:%02d:%02d"
- (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon+1) tm.Unix.tm_mday
- tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
- let username =
- try
- let uid = Unix.geteuid () in
- (Unix.getpwuid uid).Unix.pw_name
- with
- Not_found -> "unknown" in
-
- let fp = fprintf in
- let nl () = fp chan "\n" in
- let () = fp chan (f_"# %s virt-top configuration file\n") rcfile in
- let () = fp chan (f_"# generated on %s by %s\n") printable_date_time username in
- nl ();
- fp chan "display %s\n" (cli_of_display !display_mode);
- fp chan "delay %g\n" (float !delay /. 1000.);
- fp chan "hist-cpu %d\n" !historical_cpu_delay;
- if !iterations <> -1 then fp chan "iterations %d\n" !iterations;
- fp chan "sort %s\n" (cli_of_sort_order !sort_order);
- (match !uri with
- | None -> ()
- | Some uri -> fp chan "connect %s\n" uri
- );
- if !batch_mode = true then fp chan "batch true\n";
- if !secure_mode = true then fp chan "secure true\n";
- nl ();
- output_string chan (s_"# To send debug and error messages to a file, uncomment next line\n");
- fp chan "#debug virt-top.out\n";
- nl ();
- output_string chan (s_"# Enable CSV output to the named file\n");
- fp chan "#csv virt-top.csv\n";
- nl ();
- output_string chan (s_"# To protect this file from being overwritten, uncomment next line\n");
- fp chan "#overwrite-init-file false\n";
-
- close_out chan;
-
- (* If the file exists, rename it as filename.old. *)
- (try Unix.rename filename (filename ^ ".old")
- with Unix.Unix_error _ -> ());
-
- (* Rename filename.new to filename. *)
- Unix.rename (filename ^ ".new") filename;
-
- print_msg (sprintf (f_"Wrote settings to %s") filename);
- refresh ();
- sleep 2
- with
- | Sys_error err ->
- print_msg (s_"Error" ^ ": " ^ err);
- refresh (); sleep 2
- | Unix.Unix_error (err, fn, str) ->
- print_msg (s_"Error" ^ ": " ^
- (Unix.error_message err) ^ " " ^ fn ^ " " ^ str);
- refresh ();
- sleep 2
-
-and show_help (_, _, _, _, _, _, hostname,
- (libvirt_major, libvirt_minor, libvirt_release)) =
- clear ();
-
- (* Get the screen/window size. *)
- let lines, cols = get_size () in
-
- (* Banner at the top of the screen. *)
- let banner =
- sprintf (f_"virt-top %s ocaml-libvirt %s libvirt %d.%d.%d by Red Hat")
- Virt_top_version.version
- Libvirt_version.version
- libvirt_major libvirt_minor libvirt_release in
- let banner = pad cols banner in
- attron A.reverse;
- mvaddstr 0 0 banner;
- attroff A.reverse;
-
- (* Status. *)
- mvaddstr 1 0
- (sprintf
- (f_"Delay: %.1f secs; Batch: %s; Secure: %s; Sort: %s")
- (float !delay /. 1000.)
- (if !batch_mode then s_"On" else s_"Off")
- (if !secure_mode then s_"On" else s_"Off")
- (printable_sort_order !sort_order));
- mvaddstr 2 0
- (sprintf
- (f_"Connect: %s; Hostname: %s")
- (match !uri with None -> s_"default" | Some s -> s)
- hostname);
-
- (* Misc keys on left. *)
- let banner = pad 38 (s_"MAIN KEYS") in
- attron A.reverse;
- mvaddstr header_lineno 1 banner;
- attroff A.reverse;
-
- let get_lineno =
- let lineno = ref domains_lineno in
- fun () -> let i = !lineno in incr lineno; i
- in
- let key keys description =
- let lineno = get_lineno () in
- move lineno 1; attron A.bold; addstr keys; attroff A.bold;
- move lineno 10; addstr description
- in
- key "space ^L" (s_"Update display");
- key "q" (s_"Quit");
- key "d s" (s_"Set update interval");
- key "h" (s_"Help");
- key "B" (s_"toggle block info req/bytes");
-
- (* Sort order. *)
- ignore (get_lineno ());
- let banner = pad 38 (s_"SORTING") in
- attron A.reverse;
- mvaddstr (get_lineno ()) 1 banner;
- attroff A.reverse;
-
- key "P" (s_"Sort by %CPU");
- key "M" (s_"Sort by %MEM");
- key "T" (s_"Sort by TIME");
- key "N" (s_"Sort by ID");
- key "F" (s_"Select sort field");
-
- (* Display modes on right. *)
- let banner = pad 39 (s_"DISPLAY MODES") in
- attron A.reverse;
- mvaddstr header_lineno 40 banner;
- attroff A.reverse;
-
- let get_lineno =
- let lineno = ref domains_lineno in
- fun () -> let i = !lineno in incr lineno; i
- in
- let key keys description =
- let lineno = get_lineno () in
- move lineno 40; attron A.bold; addstr keys; attroff A.bold;
- move lineno 49; addstr description
- in
- key "0" (s_"Domains display");
- key "1" (s_"Toggle physical CPUs");
- key "2" (s_"Toggle network interfaces");
- key "3" (s_"Toggle block devices");
-
- (* Update screen and wait for key press. *)
- mvaddstr (lines-1) 0
- (s_"More help in virt-top(1) man page. Press any key to return.");
- refresh ();
- ignore (getch ())
-
-and unknown_command k =
- print_msg (s_"Unknown command - try 'h' for help");
- refresh ();
- sleep 1
git.annexia.org / virt-top.git / blobdiff