(* 'top'-like tool for libvirt domains.
- (C) Copyright 2007-2009 Richard W.M. Jones, Red Hat Inc.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
http://libvirt.org/
This program is free software; you can redistribute it and/or modify
open Opt_gettext.Gettext
open Utils
+open Types
+open Collect
+open Screen
module C = Libvirt.Connect
module D = Libvirt.Domain
let rcfile = ".virt-toprc"
-(* Hook for XML support (see [opt_xml.ml]). *)
-let parse_device_xml : (int -> [>`R] D.t -> string list * string list) ref =
- ref (
- fun _ _ -> [], []
- )
-
(* Hooks for CSV support (see [opt_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 [opt_calendar.ml]). *)
let parse_date_time : (string -> float) ref =
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
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. *)
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
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 ();
+ let csv_flags = !csv_cpu, !csv_mem, !csv_block, !csv_net in
+
+ if csv_enabled then
+ Csv_output.write_csv_header csv_flags !block_in_bytes;
while not !quit do
- let state = collect setup in (* Collect stats. *)
+ (* Collect stats. *)
+ let state = collect setup !block_in_bytes in
+ let pcpu_display =
+ if !display_mode = PCPUDisplay then Some (collect_pcpu state)
+ else None in
(* 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 *)
+ if not script_mode && not stream_mode then
+ Redraw.redraw !display_mode !sort_order
+ setup !block_in_bytes !historical_cpu_delay
+ state pcpu_display;
+
+ (* Update CSV file. *)
+ if csv_enabled then
+ Csv_output.append_csv setup csv_flags state;
+
+ (* Append to stream output file. *)
+ if stream_mode then
+ Stream_output.append_stream setup !block_in_bytes state;
(* Clear up unused virDomainPtr objects. *)
Gc.compact ();
(* 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 (
+ if end_time <= state.rd_time +. delay_secs then (
quit := true;
- let delay = int_of_float (1000. *. (end_time -. time)) in
+ let delay = int_of_float (1000. *. (end_time -. state.rd_time)) in
if delay >= 0 then delay else 0
) else
!delay in
git.annexia.org / virt-top.git / blobdiff