1 (* 'top'-like tool for libvirt domains.
2 (C) Copyright 2007-2009 Richard W.M. Jones, Red Hat Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 open Virt_top_gettext.Gettext
27 module C = Libvirt.Connect
28 module D = Libvirt.Domain
29 module N = Libvirt.Network
31 let rcfile = ".virt-toprc"
33 (* Hook for XML support (see virt_top_xml.ml). *)
34 let parse_device_xml : (int -> [>`R] D.t -> string list * string list) ref =
39 (* Hooks for CSV support (see virt_top_csv.ml). *)
40 let csv_start : (string -> unit) ref =
42 fun _ -> failwith (s_"virt-top was compiled without support for CSV files")
44 let csv_write : (string list -> unit) ref =
49 (* Hook for calendar support (see virt_top_calendar.ml). *)
50 let parse_date_time : (string -> float) ref =
53 failwith (s_"virt-top was compiled without support for dates and times")
58 | DomainID | DomainName | Processor | Memory | Time
59 | NetRX | NetTX | BlockRdRq | BlockWrRq
60 let all_sort_fields = [
61 DomainID; DomainName; Processor; Memory; Time;
62 NetRX; NetTX; BlockRdRq; BlockWrRq
64 let printable_sort_order = function
65 | Processor -> s_"%CPU"
67 | Time -> s_"TIME (CPU time)"
68 | DomainID -> s_"Domain ID"
69 | DomainName -> s_"Domain name"
70 | NetRX -> s_"Net RX bytes"
71 | NetTX -> s_"Net TX bytes"
72 | BlockRdRq -> s_"Block read reqs"
73 | BlockWrRq -> s_"Block write reqs"
74 let sort_order_of_cli = function
75 | "cpu" | "processor" -> Processor
76 | "mem" | "memory" -> Memory
79 | "name" -> DomainName
80 | "netrx" -> NetRX | "nettx" -> NetTX
81 | "blockrdrq" -> BlockRdRq | "blockwrrq" -> BlockWrRq
83 failwithf (f_"%s: sort order should be: %s")
84 str "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq"
85 let cli_of_sort_order = function
90 | DomainName -> "name"
93 | BlockRdRq -> "blockrdrq"
94 | BlockWrRq -> "blockwrrq"
96 (* Current major display mode: TaskDisplay is the normal display. *)
97 type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
99 let display_of_cli = function
100 | "task" -> TaskDisplay
101 | "pcpu" -> PCPUDisplay
102 | "block" -> BlockDisplay
103 | "net" -> NetDisplay
105 failwithf (f_"%s: display should be %s") str "task|pcpu|block|net"
106 let cli_of_display = function
107 | TaskDisplay -> "task"
108 | PCPUDisplay -> "pcpu"
109 | BlockDisplay -> "block"
110 | NetDisplay -> "net"
113 type init_file = NoInitFile | DefaultInitFile | InitFile of string
117 let delay = ref 3000 (* milliseconds *)
118 let historical_cpu_delay = ref 20 (* secs *)
119 let iterations = ref (-1)
120 let end_time = ref None
121 let batch_mode = ref false
122 let secure_mode = ref false
123 let sort_order = ref Processor
124 let display_mode = ref TaskDisplay
126 let debug_file = ref ""
127 let csv_enabled = ref false
128 let csv_cpu = ref true
129 let csv_mem = ref true
130 let csv_block = ref true
131 let csv_net = ref true
132 let init_file = ref DefaultInitFile
133 let script_mode = ref false
134 let stream_mode = ref false
135 let block_in_bytes = ref false
137 (* Tuple of never-changing data returned by start_up function. *)
139 Libvirt.ro C.t * bool * bool * bool * bool * C.node_info * string *
142 (* Function to read command line arguments and go into curses mode. *)
144 (* Read command line arguments. *)
145 let rec set_delay newdelay =
146 if newdelay <= 0. then
147 failwith (s_"-d: cannot set a negative delay");
148 delay := int_of_float (newdelay *. 1000.)
149 and set_uri = function "" -> uri := None | u -> uri := Some u
150 and set_sort order = sort_order := sort_order_of_cli order
151 and set_pcpu_mode () = display_mode := PCPUDisplay
152 and set_net_mode () = display_mode := NetDisplay
153 and set_block_mode () = display_mode := BlockDisplay
154 and set_csv filename =
155 (!csv_start) filename;
157 and no_init_file () = init_file := NoInitFile
158 and set_init_file filename = init_file := InitFile filename
159 and set_end_time time = end_time := Some ((!parse_date_time) time)
160 and display_version () =
161 printf "virt-top %s ocaml-libvirt %s\n"
162 Virt_top_version.version Libvirt_version.version;
165 let argspec = Arg.align [
166 "-1", Arg.Unit set_pcpu_mode,
167 " " ^ s_"Start by displaying pCPUs (default: tasks)";
168 "-2", Arg.Unit set_net_mode,
169 " " ^ s_"Start by displaying network interfaces";
170 "-3", Arg.Unit set_block_mode,
171 " " ^ s_"Start by displaying block devices";
172 "-b", Arg.Set batch_mode,
173 " " ^ s_"Batch mode";
174 "-c", Arg.String set_uri,
175 "uri " ^ s_"Connect to libvirt URI";
176 "--connect", Arg.String set_uri,
177 "uri " ^ s_"Connect to libvirt URI";
178 "--csv", Arg.String set_csv,
179 "file " ^ s_"Log statistics to CSV file";
180 "--no-csv-cpu", Arg.Clear csv_cpu,
181 " " ^ s_"Disable CPU stats in CSV";
182 "--no-csv-mem", Arg.Clear csv_mem,
183 " " ^ s_"Disable memory stats in CSV";
184 "--no-csv-block", Arg.Clear csv_block,
185 " " ^ s_"Disable block device stats in CSV";
186 "--no-csv-net", Arg.Clear csv_net,
187 " " ^ s_"Disable net stats in CSV";
188 "-d", Arg.Float set_delay,
189 "delay " ^ s_"Delay time interval (seconds)";
190 "--debug", Arg.Set_string debug_file,
191 "file " ^ s_"Send debug messages to file";
192 "--end-time", Arg.String set_end_time,
193 "time " ^ s_"Exit at given time";
194 "--hist-cpu", Arg.Set_int historical_cpu_delay,
195 "secs " ^ s_"Historical CPU delay";
196 "--init-file", Arg.String set_init_file,
197 "file " ^ s_"Set name of init file";
198 "--no-init-file", Arg.Unit no_init_file,
199 " " ^ s_"Do not read init file";
200 "-n", Arg.Set_int iterations,
201 "iterations " ^ s_"Number of iterations to run";
202 "-o", Arg.String set_sort,
203 "sort " ^ sprintf (f_"Set sort order (%s)") "cpu|mem|time|id|name";
204 "-s", Arg.Set secure_mode,
205 " " ^ s_"Secure (\"kiosk\") mode";
206 "--script", Arg.Set script_mode,
207 " " ^ s_"Run from a script (no user interface)";
208 "--stream", Arg.Set stream_mode,
209 " " ^ s_"dump output to stdout (no userinterface)";
210 "--block-in-bytes", Arg.Set block_in_bytes,
211 " " ^ s_"show block device load in bytes rather than reqs";
212 "--version", Arg.Unit display_version,
213 " " ^ s_"Display version number and exit";
216 raise (Arg.Bad (sprintf (f_"%s: unknown parameter") str)) in
217 let usage_msg = s_"virt-top : a 'top'-like utility for virtualization
223 Arg.parse argspec anon_fun usage_msg;
225 (* Read the init file. *)
226 let try_to_read_init_file filename =
227 let config = read_config_file filename in
230 | _, "display", mode -> display_mode := display_of_cli mode
231 | _, "delay", secs -> set_delay (float_of_string secs)
232 | _, "hist-cpu", secs -> historical_cpu_delay := int_of_string secs
233 | _, "iterations", n -> iterations := int_of_string n
234 | _, "sort", order -> set_sort order
235 | _, "connect", uri -> set_uri uri
236 | _, "debug", filename -> debug_file := filename
237 | _, "csv", filename -> set_csv filename
238 | _, "csv-cpu", b -> csv_cpu := bool_of_string b
239 | _, "csv-mem", b -> csv_mem := bool_of_string b
240 | _, "csv-block", b -> csv_block := bool_of_string b
241 | _, "csv-net", b -> csv_net := bool_of_string b
242 | _, "batch", b -> batch_mode := bool_of_string b
243 | _, "secure", b -> secure_mode := bool_of_string b
244 | _, "script", b -> script_mode := bool_of_string b
245 | _, "stream", b -> stream_mode := bool_of_string b
246 | _, "block-in-bytes", b -> block_in_bytes := bool_of_string b
247 | _, "end-time", t -> set_end_time t
248 | _, "overwrite-init-file", "false" -> no_init_file ()
250 eprintf (f_"%s:%d: configuration item ``%s'' ignored\n%!")
254 (match !init_file with
257 let home = try Sys.getenv "HOME" with Not_found -> "/" in
258 let filename = home // rcfile in
259 try_to_read_init_file filename
260 | InitFile filename ->
261 try_to_read_init_file filename
264 (* Connect to the hypervisor before going into curses mode, since
265 * this is the most likely thing to fail.
269 try C.connect_readonly ?name ()
271 Libvirt.Virterror err ->
272 prerr_endline (Libvirt.Virterror.to_string err);
273 (* If non-root and no explicit connection URI, print a warning. *)
274 if Unix.geteuid () <> 0 && name = None then (
275 print_endline (s_"NB: If you want to monitor a local hypervisor, you usually need to be root");
279 (* Get the node_info. This never changes, right? So we get it just once. *)
280 let node_info = C.get_node_info conn in
282 (* Hostname and libvirt library version also don't change. *)
284 try C.get_hostname conn
286 (* qemu:/// and other URIs didn't support virConnectGetHostname until
287 * libvirt 0.3.3. Before that they'd throw a virterror. *)
288 | Libvirt.Virterror _
289 | Libvirt.Not_supported "virConnectGetHostname" -> "unknown" in
291 let libvirt_version =
292 let v, _ = Libvirt.get_version () in
293 v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
295 (* Open debug file if specified.
296 * NB: Do this just before jumping into curses mode.
298 (match !debug_file with
299 | "" -> (* No debug file specified, send stderr to /dev/null unless
300 * we're in script mode.
302 if not !script_mode && not !stream_mode then (
303 let fd = Unix.openfile "/dev/null" [Unix.O_WRONLY] 0o644 in
304 Unix.dup2 fd Unix.stderr;
307 | filename -> (* Send stderr to the named file. *)
309 Unix.openfile filename [Unix.O_WRONLY;Unix.O_CREAT;Unix.O_TRUNC]
311 Unix.dup2 fd Unix.stderr;
315 (* Curses voodoo (see ncurses(3)). *)
316 if not !script_mode && not !stream_mode then (
321 let stdscr = stdscr () in
322 ignore (intrflush stdscr false);
323 ignore (keypad stdscr true);
327 (* This tuple of static information is called 'setup' in other parts
328 * of this program, and is passed to other functions such as redraw and
329 * main_loop. See virt_top_main.ml.
332 !batch_mode, !script_mode, !csv_enabled, !stream_mode, (* immutable modes *)
333 node_info, hostname, libvirt_version (* info that doesn't change *)
336 (* Show a domain state (the 'S' column). *)
337 let show_state = function
338 | D.InfoNoState -> '?'
339 | D.InfoRunning -> 'R'
340 | D.InfoBlocked -> 'S'
341 | D.InfoPaused -> 'P'
342 | D.InfoShutdown -> 'D'
343 | D.InfoShutoff -> 'O'
344 | D.InfoCrashed -> 'X'
346 (* Sleep in seconds. *)
347 let sleep = Unix.sleep
349 (* Sleep in milliseconds. *)
351 ignore (Unix.select [] [] [] (float n /. 1000.))
353 (* The curses getstr/getnstr functions are just weird.
354 * This helper function also enables echo temporarily.
356 let get_string maxlen =
358 let str = String.create maxlen in
359 let ok = getstr str in (* Safe because binding calls getnstr. *)
363 (* Chop at first '\0'. *)
365 let i = String.index str '\000' in
368 Not_found -> str (* it is full maxlen bytes *)
373 let summary_lineno = 1 (* this takes 2 lines *)
374 let message_lineno = 3
375 let header_lineno = 4
376 let domains_lineno = 5
378 (* Easier to use versions of curses functions addstr, mvaddstr, etc. *)
379 let move y x = ignore (move y x)
380 let refresh () = ignore (refresh ())
381 let addch c = ignore (addch (int_of_char c))
382 let addstr s = ignore (addstr s)
383 let mvaddstr y x s = ignore (mvaddstr y x s)
385 (* Print in the "message area". *)
386 let clear_msg () = move message_lineno 0; clrtoeol ()
387 let print_msg str = clear_msg (); mvaddstr message_lineno 0 str
389 (* Intermediate "domain + stats" structure that we use to collect
390 * everything we know about a domain within the collect function.
392 type rd_domain = Inactive | Active of rd_active
394 rd_domid : int; (* Domain ID. *)
395 rd_dom : [`R] D.t; (* Domain object. *)
396 rd_info : D.info; (* Domain CPU info now. *)
397 rd_block_stats : (string * D.block_stats) list;
398 (* Domain block stats now. *)
399 rd_interface_stats : (string * D.interface_stats) list;
400 (* Domain net stats now. *)
401 rd_prev_info : D.info option; (* Domain CPU info previously. *)
402 rd_prev_block_stats : (string * D.block_stats) list;
403 (* Domain block stats prev. *)
404 rd_prev_interface_stats : (string * D.interface_stats) list;
405 (* Domain interface stats prev. *)
406 (* The following are since the last slice, or 0 if cannot be calculated: *)
407 rd_cpu_time : float; (* CPU time used in nanoseconds. *)
408 rd_percent_cpu : float; (* CPU time as percent of total. *)
409 rd_mem_bytes : int64; (* Memory usage in bytes *)
410 rd_mem_percent: int64; (* Memory usage as percent of total *)
411 (* The following are since the last slice, or None if cannot be calc'd: *)
412 rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
413 rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
414 rd_block_rd_bytes : int64 option; (* Number of bytes block device read *)
415 rd_block_wr_bytes : int64 option; (* Number of bytes block device write *)
416 (* _info fields includes the number considering --block_in_bytes option *)
417 rd_block_rd_info : int64 option; (* Block device read info for user *)
418 rd_block_wr_info : int64 option; (* Block device read info for user *)
420 rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
421 rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
425 let collect, clear_pcpu_display_data =
426 (* We cache the list of block devices and interfaces for each domain
427 * here, so we don't need to reparse the XML each time.
429 let devices = Hashtbl.create 13 in
431 (* Function to get the list of block devices, network interfaces for
432 * a particular domain. Get it from the devices cache, and if not
433 * there then parse the domain XML.
435 let get_devices id dom =
436 try Hashtbl.find devices id
438 let blkdevs, netifs = (!parse_device_xml) id dom in
439 Hashtbl.replace devices id (blkdevs, netifs);
443 (* We save the state of domains across redraws here, which allows us
444 * to deduce %CPU usage from the running total.
446 let last_info = Hashtbl.create 13 in
447 let last_time = ref (Unix.gettimeofday ()) in
449 (* Save pcpu_usages structures across redraws too (only for pCPU display). *)
450 let last_pcpu_usages = Hashtbl.create 13 in
452 let clear_pcpu_display_data () =
453 (* Clear out pcpu_usages used by PCPUDisplay display_mode
454 * when we switch back to TaskDisplay mode.
456 Hashtbl.clear last_pcpu_usages
459 let collect (conn, _, _, _, _, node_info, _, _) =
460 (* Number of physical CPUs (some may be disabled). *)
461 let nr_pcpus = C.maxcpus_of_node_info node_info in
463 (* Get the current time. *)
464 let time = Unix.gettimeofday () in
465 let tm = Unix.localtime time in
467 sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
469 (* What's the total CPU time elapsed since we were last called? (ns) *)
470 let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
471 (* Avoid division by zero. *)
472 let total_cpu_per_pcpu =
473 if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
474 let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
476 (* Get the domains. Match up with their last_info (if any). *)
478 (* Active domains. *)
479 let n = C.num_of_domains conn in
481 if n > 0 then Array.to_list (C.list_domains conn n)
487 let dom = D.lookup_by_id conn id in
488 let name = D.get_name dom in
489 let blkdevs, netifs = get_devices id dom in
491 (* Get current CPU, block and network stats. *)
492 let info = D.get_info dom in
494 try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
496 | Libvirt.Not_supported "virDomainBlockStats"
497 | Libvirt.Virterror _ -> [] in
498 let interface_stats =
499 try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
501 | Libvirt.Not_supported "virDomainInterfaceStats"
502 | Libvirt.Virterror _ -> [] in
504 let prev_info, prev_block_stats, prev_interface_stats =
506 let prev_info, prev_block_stats, prev_interface_stats =
507 Hashtbl.find last_info id in
508 Some prev_info, prev_block_stats, prev_interface_stats
509 with Not_found -> None, [], [] in
512 rd_domid = id; rd_dom = dom; rd_info = info;
513 rd_block_stats = block_stats;
514 rd_interface_stats = interface_stats;
515 rd_prev_info = prev_info;
516 rd_prev_block_stats = prev_block_stats;
517 rd_prev_interface_stats = prev_interface_stats;
518 rd_cpu_time = 0.; rd_percent_cpu = 0.;
519 rd_mem_bytes = 0L; rd_mem_percent = 0L;
520 rd_block_rd_reqs = None; rd_block_wr_reqs = None;
521 rd_block_rd_bytes = None; rd_block_wr_bytes = None;
522 rd_block_rd_info = None; rd_block_wr_info = None;
523 rd_net_rx_bytes = None; rd_net_tx_bytes = None;
526 Libvirt.Virterror _ -> None (* ignore transient error *)
529 (* Inactive domains. *)
532 let n = C.num_of_defined_domains conn in
534 if n > 0 then Array.to_list (C.list_defined_domains conn n)
536 List.map (fun name -> name, Inactive) names
538 (* Ignore transient errors, in particular errors from
539 * num_of_defined_domains if it cannot contact xend.
541 | Libvirt.Virterror _ -> [] in
543 doms @ doms_inactive in
545 (* Calculate the CPU time (ns) and %CPU used by each domain. *)
549 (* We have previous CPU info from which to calculate it? *)
550 | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
552 Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
553 let percent_cpu = 100. *. cpu_time /. total_cpu in
554 let mem_usage = rd.rd_info.D.memory in
556 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
558 rd_cpu_time = cpu_time;
559 rd_percent_cpu = percent_cpu;
560 rd_mem_bytes = mem_usage;
561 rd_mem_percent = mem_percent} in
563 (* For all other domains we can't calculate it, so leave as 0 *)
567 (* Calculate the number of block device read/write requests across
568 * all block devices attached to a domain.
573 (* Do we have stats from the previous slice? *)
574 | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
576 let block_stats = rd.rd_block_stats in (* stats now *)
578 (* Add all the devices together. Throw away device names. *)
579 let prev_block_stats =
580 sum_block_stats (List.map snd prev_block_stats) in
582 sum_block_stats (List.map snd block_stats) in
584 (* Calculate increase in read & write requests. *)
586 block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
588 block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
590 block_stats.D.rd_bytes -^ prev_block_stats.D.rd_bytes in
592 block_stats.D.wr_bytes -^ prev_block_stats.D.wr_bytes in
595 rd_block_rd_reqs = Some read_reqs;
596 rd_block_wr_reqs = Some write_reqs;
597 rd_block_rd_bytes = Some read_bytes;
598 rd_block_wr_bytes = Some write_bytes;
601 rd_block_rd_info = if !block_in_bytes then
602 rd.rd_block_rd_bytes else rd.rd_block_rd_reqs;
603 rd_block_wr_info = if !block_in_bytes then
604 rd.rd_block_wr_bytes else rd.rd_block_wr_reqs;
607 (* For all other domains we can't calculate it, so leave as None. *)
611 (* Calculate the same as above for network interfaces across
612 * all network interfaces attached to a domain.
617 (* Do we have stats from the previous slice? *)
618 | name, Active ({ rd_prev_interface_stats =
619 ((_::_) as prev_interface_stats) }
621 let interface_stats = rd.rd_interface_stats in (* stats now *)
623 (* Add all the devices together. Throw away device names. *)
624 let prev_interface_stats =
625 sum_interface_stats (List.map snd prev_interface_stats) in
626 let interface_stats =
627 sum_interface_stats (List.map snd interface_stats) in
629 (* Calculate increase in rx & tx bytes. *)
631 interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
633 interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
636 rd_net_rx_bytes = Some rx_bytes;
637 rd_net_tx_bytes = Some tx_bytes } in
639 (* For all other domains we can't calculate it, so leave as None. *)
643 (* Collect some extra information in PCPUDisplay display_mode. *)
645 if !display_mode = PCPUDisplay then (
646 (* Get the VCPU info and VCPU->PCPU mappings for active domains.
647 * Also cull some data we don't care about.
649 let doms = List.filter_map (
651 | (name, Active rd) ->
653 let domid = rd.rd_domid in
654 let maplen = C.cpumaplen nr_pcpus in
655 let cpu_stats = D.get_cpu_stats rd.rd_dom nr_pcpus in
656 let rec find_usages_from_stats = function
657 | ("cpu_time", D.TypedFieldUInt64 usages) :: _ -> usages
658 | _ :: params -> find_usages_from_stats params
660 let pcpu_usages = Array.map find_usages_from_stats cpu_stats in
661 let maxinfo = rd.rd_info.D.nr_virt_cpu in
662 let nr_vcpus, vcpu_infos, cpumaps =
663 D.get_vcpus rd.rd_dom maxinfo maplen in
665 (* Got previous pcpu_usages for this domain? *)
666 let prev_pcpu_usages =
667 try Some (Hashtbl.find last_pcpu_usages domid)
668 with Not_found -> None in
669 (* Update last_pcpu_usages. *)
670 Hashtbl.replace last_pcpu_usages domid pcpu_usages;
672 (match prev_pcpu_usages with
673 | Some prev_pcpu_usages
674 when Array.length prev_pcpu_usages = Array.length pcpu_usages ->
675 Some (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
676 prev_pcpu_usages, cpumaps, maplen)
677 | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
680 Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
682 | (_, Inactive) -> None (* ignore inactive doms *)
684 let nr_doms = List.length doms in
686 (* Rearrange the data into a matrix. Major axis (down) is
687 * pCPUs. Minor axis (right) is domains. At each node we store:
688 * cpu_time (on this pCPU only, nanosecs),
690 let pcpus = Array.make_matrix nr_pcpus nr_doms 0L in
693 fun di (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
694 prev_pcpu_usages, cpumaps, maplen) ->
695 (* Which pCPUs can this dom run on? *)
696 for p = 0 to Array.length pcpu_usages - 1 do
697 pcpus.(p).(di) <- pcpu_usages.(p) -^ prev_pcpu_usages.(p)
701 (* Sum the CPU time used by each pCPU, for the %CPU column. *)
702 let pcpus_cpu_time = Array.map (
704 let cpu_time = ref 0L in
705 for di = 0 to Array.length row-1 do
707 cpu_time := !cpu_time +^ t
709 Int64.to_float !cpu_time
712 Some (doms, pcpus, pcpus_cpu_time)
716 (* Calculate totals. *)
717 let totals = List.fold_left (
718 fun (count, running, blocked, paused, shutdown, shutoff,
719 crashed, active, inactive,
720 total_cpu_time, total_memory, total_domU_memory) ->
722 | (name, Active rd) ->
723 let test state orig =
724 if rd.rd_info.D.state = state then orig+1 else orig
726 let running = test D.InfoRunning running in
727 let blocked = test D.InfoBlocked blocked in
728 let paused = test D.InfoPaused paused in
729 let shutdown = test D.InfoShutdown shutdown in
730 let shutoff = test D.InfoShutoff shutoff in
731 let crashed = test D.InfoCrashed crashed in
733 let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
734 let total_memory = total_memory +^ rd.rd_info.D.memory in
735 let total_domU_memory = total_domU_memory +^
736 if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
738 (count+1, running, blocked, paused, shutdown, shutoff,
739 crashed, active+1, inactive,
740 total_cpu_time, total_memory, total_domU_memory)
742 | (name, Inactive) -> (* inactive domain *)
743 (count+1, running, blocked, paused, shutdown, shutoff,
744 crashed, active, inactive+1,
745 total_cpu_time, total_memory, total_domU_memory)
746 ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
748 (* Update last_time, last_info. *)
750 Hashtbl.clear last_info;
754 let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
755 Hashtbl.add last_info rd.rd_domid info
760 time, printable_time,
761 nr_pcpus, total_cpu, total_cpu_per_pcpu,
766 collect, clear_pcpu_display_data
768 (* Redraw the display. *)
770 (* Keep a historical list of %CPU usages. *)
771 let historical_cpu = ref [] in
772 let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
774 (_, _, _, _, _, node_info, _, _) (* setup *)
776 time, printable_time,
777 nr_pcpus, total_cpu, total_cpu_per_pcpu,
779 pcpu_display) (* state *) ->
782 (* Get the screen/window size. *)
783 let lines, cols = get_size () in
786 mvaddstr top_lineno 0 (sprintf "virt-top %s - " printable_time);
788 (* Basic node_info. *)
790 (sprintf "%s %d/%dCPU %dMHz %LdMB "
791 node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
792 (node_info.C.memory /^ 1024L));
793 (* Save the cursor position for when we come to draw the
794 * historical CPU times (down in this function).
796 let stdscr = stdscr () in
797 let historical_cursor = getyx stdscr in
799 (match !display_mode with
800 | TaskDisplay -> (*---------- Showing domains ----------*)
801 (* Sort domains on current sort_order. *)
804 match !sort_order with
806 (fun _ -> 0) (* fallthrough to default name compare *)
809 | Active rd1, Active rd2 ->
810 compare rd2.rd_percent_cpu rd1.rd_percent_cpu
811 | Active _, Inactive -> -1
812 | Inactive, Active _ -> 1
813 | Inactive, Inactive -> 0)
816 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
817 compare info2.D.memory info1.D.memory
818 | Active _, Inactive -> -1
819 | Inactive, Active _ -> 1
820 | Inactive, Inactive -> 0)
823 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
824 compare info2.D.cpu_time info1.D.cpu_time
825 | Active _, Inactive -> -1
826 | Inactive, Active _ -> 1
827 | Inactive, Inactive -> 0)
830 | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
832 | Active _, Inactive -> -1
833 | Inactive, Active _ -> 1
834 | Inactive, Inactive -> 0)
837 | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
839 | Active _, Inactive -> -1
840 | Inactive, Active _ -> 1
841 | Inactive, Inactive -> 0)
844 | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
846 | Active _, Inactive -> -1
847 | Inactive, Active _ -> 1
848 | Inactive, Inactive -> 0)
851 | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
853 | Active _, Inactive -> -1
854 | Inactive, Active _ -> 1
855 | Inactive, Inactive -> 0)
858 | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
860 | Active _, Inactive -> -1
861 | Inactive, Active _ -> 1
862 | Inactive, Inactive -> 0)
864 let cmp (name1, dom1) (name2, dom2) =
865 let r = cmp (dom1, dom2) in
867 else compare name1 name2
869 List.sort ~cmp doms in
873 let header_string = if !block_in_bytes
874 then " ID S RDBY WRBY RXBY TXBY %CPU %MEM TIME NAME"
875 else " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"
877 mvaddstr header_lineno 0
878 (pad cols header_string);
881 let rec loop lineno = function
883 | (name, Active rd) :: doms ->
884 if lineno < lines then (
885 let state = show_state rd.rd_info.D.state in
886 let rd_req = Show.int64_option rd.rd_block_rd_info in
887 let wr_req = Show.int64_option rd.rd_block_wr_info in
888 let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
889 let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
890 let percent_cpu = Show.percent rd.rd_percent_cpu in
891 let percent_mem = Int64.to_float rd.rd_mem_percent in
892 let percent_mem = Show.percent percent_mem in
893 let time = Show.time rd.rd_info.D.cpu_time in
895 let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
896 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
897 percent_cpu percent_mem time name in
898 let line = pad cols line in
899 mvaddstr lineno 0 line;
902 | (name, Inactive) :: doms -> (* inactive domain *)
903 if lineno < lines then (
908 let line = pad cols line in
909 mvaddstr lineno 0 line;
913 loop domains_lineno doms
915 | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
916 let doms, pcpus, pcpus_cpu_time =
917 match pcpu_display with
919 | None -> failwith "internal error: no pcpu_display data" in
921 (* Display the pCPUs. *)
925 fun (_, name, _, _, _, _, _, _) ->
926 let len = String.length name in
927 let width = max (len+1) 7 in
932 mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names));
937 mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p);
938 let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
939 let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
940 addstr (Show.percent percent_cpu);
944 fun di (domid, name, _, _, _, _, _, _) ->
945 let t = pcpus.(p).(di) in
946 let len = String.length name in
947 let width = max (len+1) 7 in
951 let t = Int64.to_float t in
952 let percent = 100. *. t /. total_cpu_per_pcpu in
953 sprintf "%s " (Show.percent percent)
955 addstr (pad width str);
960 | NetDisplay -> (*---------- Showing network interfaces ----------*)
961 (* Only care about active domains. *)
962 let doms = List.filter_map (
964 | (name, Active rd) -> Some (name, rd)
965 | (_, Inactive) -> None
968 (* For each domain we have a list of network interfaces seen
969 * this slice, and seen in the previous slice, which we now
970 * match up to get a list of (domain, interface) for which
971 * we have current & previous knowledge. (And ignore the rest).
979 (* Have prev slice stats for this device? *)
981 List.assoc dev rd.rd_prev_interface_stats in
982 Some (dev, name, rd, stats, prev_stats)
983 with Not_found -> None
984 ) rd.rd_interface_stats
987 (* Finally we have a list of:
988 * device name, domain name, rd_* stuff, curr stats, prev stats.
990 let devs : (string * string * rd_active *
991 D.interface_stats * D.interface_stats) list =
994 (* Difference curr slice & prev slice. *)
995 let devs = List.map (
996 fun (dev, name, rd, curr, prev) ->
997 dev, name, rd, diff_interface_stats curr prev
1000 (* Sort by current sort order, but map some of the standard
1001 * sort orders into ones which makes sense here.
1005 match !sort_order with
1007 (fun _ -> 0) (* fallthrough to default name compare *)
1009 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1011 | Processor | Memory | Time | BlockRdRq | BlockWrRq
1012 (* fallthrough to RXBY comparison. *)
1014 (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
1017 (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
1020 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1021 let r = cmp (stats1, rd1, stats2, rd2) in
1023 else compare (dev1, name1) (dev2, name2)
1025 List.sort ~cmp devs in
1027 (* Print the header for network devices. *)
1029 mvaddstr header_lineno 0
1030 (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE");
1033 (* Print domains and devices. *)
1034 let rec loop lineno = function
1036 | (dev, name, rd, stats) :: devs ->
1037 if lineno < lines then (
1038 let state = show_state rd.rd_info.D.state in
1040 if stats.D.rx_bytes >= 0L
1041 then Show.int64 stats.D.rx_bytes
1044 if stats.D.tx_bytes >= 0L
1045 then Show.int64 stats.D.tx_bytes
1048 if stats.D.rx_packets >= 0L
1049 then Show.int64 stats.D.rx_packets
1052 if stats.D.tx_packets >= 0L
1053 then Show.int64 stats.D.tx_packets
1056 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1059 rx_packets tx_packets
1060 (pad 12 name) dev in
1061 let line = pad cols line in
1062 mvaddstr lineno 0 line;
1063 loop (lineno+1) devs
1066 loop domains_lineno devs
1068 | BlockDisplay -> (*---------- Showing block devices ----------*)
1069 (* Only care about active domains. *)
1070 let doms = List.filter_map (
1072 | (name, Active rd) -> Some (name, rd)
1073 | (_, Inactive) -> None
1076 (* For each domain we have a list of block devices seen
1077 * this slice, and seen in the previous slice, which we now
1078 * match up to get a list of (domain, device) for which
1079 * we have current & previous knowledge. (And ignore the rest).
1087 (* Have prev slice stats for this device? *)
1089 List.assoc dev rd.rd_prev_block_stats in
1090 Some (dev, name, rd, stats, prev_stats)
1091 with Not_found -> None
1095 (* Finally we have a list of:
1096 * device name, domain name, rd_* stuff, curr stats, prev stats.
1098 let devs : (string * string * rd_active *
1099 D.block_stats * D.block_stats) list =
1100 List.flatten devs in
1102 (* Difference curr slice & prev slice. *)
1103 let devs = List.map (
1104 fun (dev, name, rd, curr, prev) ->
1105 dev, name, rd, diff_block_stats curr prev
1108 (* Sort by current sort order, but map some of the standard
1109 * sort orders into ones which makes sense here.
1113 match !sort_order with
1115 (fun _ -> 0) (* fallthrough to default name compare *)
1117 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1119 | Processor | Memory | Time | NetRX | NetTX
1120 (* fallthrough to RDRQ comparison. *)
1122 (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
1125 (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
1128 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1129 let r = cmp (stats1, rd1, stats2, rd2) in
1131 else compare (dev1, name1) (dev2, name2)
1133 List.sort ~cmp devs in
1135 (* Print the header for block devices. *)
1137 mvaddstr header_lineno 0
1138 (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE");
1141 (* Print domains and devices. *)
1142 let rec loop lineno = function
1144 | (dev, name, rd, stats) :: devs ->
1145 if lineno < lines then (
1146 let state = show_state rd.rd_info.D.state in
1148 if stats.D.rd_bytes >= 0L
1149 then Show.int64 stats.D.rd_bytes
1152 if stats.D.wr_bytes >= 0L
1153 then Show.int64 stats.D.wr_bytes
1156 if stats.D.rd_req >= 0L
1157 then Show.int64 stats.D.rd_req
1160 if stats.D.wr_req >= 0L
1161 then Show.int64 stats.D.wr_req
1164 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1168 (pad 12 name) dev in
1169 let line = pad cols line in
1170 mvaddstr lineno 0 line;
1171 loop (lineno+1) devs
1174 loop domains_lineno devs
1175 ); (* end of display_mode conditional section *)
1177 let (count, running, blocked, paused, shutdown, shutoff,
1178 crashed, active, inactive,
1179 total_cpu_time, total_memory, total_domU_memory) = totals in
1181 mvaddstr summary_lineno 0
1183 (f_"%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
1184 count active running blocked paused inactive shutdown shutoff crashed);
1186 (* Total %CPU used, and memory summary. *)
1187 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1188 mvaddstr (summary_lineno+1) 0
1190 (f_"CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
1191 percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L));
1193 (* Time to grab another historical %CPU for the list? *)
1194 if time >= !historical_cpu_last_time +. float !historical_cpu_delay
1196 historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
1197 historical_cpu_last_time := time
1200 (* Display historical CPU time. *)
1202 let y, x = historical_cursor in
1203 let maxwidth = cols - x in
1206 (List.map (sprintf "%2.1f%%") !historical_cpu) in
1207 let line = pad maxwidth line in
1211 move message_lineno 0; (* Park cursor in message area, as with top. *)
1212 refresh () (* Refresh the display. *)
1214 (* Write CSV header row. *)
1215 let write_csv_header () =
1217 [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
1218 "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
1219 "Shutoff"; "Crashed"; "Active"; "Inactive";
1221 "Total hardware memory (KB)";
1222 "Total memory (KB)"; "Total guest memory (KB)";
1223 "Total CPU time (ns)" ] @
1224 (* These fields are repeated for each domain: *)
1225 [ "Domain ID"; "Domain name"; ] @
1226 (if !csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
1227 (if !csv_mem then [ "Mem (bytes)"; "%Mem";] else []) @
1228 (if !csv_block && not !block_in_bytes
1229 then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
1230 (if !csv_block && !block_in_bytes
1231 then [ "Block RDBY"; "Block WRBY"; ] else []) @
1232 (if !csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
1235 (* Write summary data to CSV file. *)
1237 (_, _, _, _, _, node_info, hostname, _) (* setup *)
1240 nr_pcpus, total_cpu, _,
1244 (* The totals / summary fields. *)
1245 let (count, running, blocked, paused, shutdown, shutoff,
1246 crashed, active, inactive,
1247 total_cpu_time, total_memory, total_domU_memory) = totals in
1249 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1251 let summary_fields = [
1252 hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
1253 string_of_int count; string_of_int running; string_of_int blocked;
1254 string_of_int paused; string_of_int shutdown; string_of_int shutoff;
1255 string_of_int crashed; string_of_int active; string_of_int inactive;
1256 sprintf "%2.1f" percent_cpu;
1257 Int64.to_string node_info.C.memory;
1258 Int64.to_string total_memory; Int64.to_string total_domU_memory;
1259 Int64.to_string (Int64.of_float total_cpu_time)
1264 * Sort them by ID so that the list of relatively stable. Ignore
1267 let doms = List.filter_map (
1269 | _, Inactive -> None (* Ignore inactive domains. *)
1270 | name, Active rd -> Some (name, rd)
1272 let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
1273 compare rd_domid1 rd_domid2
1275 let doms = List.sort ~cmp doms in
1277 let string_of_int64_option = Option.map_default Int64.to_string "" in
1279 let domain_fields = List.map (
1280 fun (domname, rd) ->
1281 [ string_of_int rd.rd_domid; domname ] @
1283 string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
1286 Int64.to_string rd.rd_mem_bytes; Int64.to_string rd.rd_mem_percent
1288 (if !csv_block then [
1289 string_of_int64_option rd.rd_block_rd_info;
1290 string_of_int64_option rd.rd_block_wr_info;
1293 string_of_int64_option rd.rd_net_rx_bytes;
1294 string_of_int64_option rd.rd_net_tx_bytes;
1297 let domain_fields = List.flatten domain_fields in
1299 (!csv_write) (summary_fields @ domain_fields)
1302 (_, _, _, _, _, node_info, hostname, _) (* setup *)
1305 nr_pcpus, total_cpu, _,
1309 (* Header for this iteration *)
1310 printf "virt-top time %s Host %s %s %d/%dCPU %dMHz %LdMB \n"
1311 printable_time hostname node_info.C.model node_info.C.cpus nr_pcpus
1312 node_info.C.mhz (node_info.C.memory /^ 1024L);
1313 (* dump domain information one by one *)
1314 let rd, wr = if !block_in_bytes then "RDBY", "WRBY" else "RDRQ", "WRRQ"
1316 printf " ID S %s %s RXBY TXBY %%CPU %%MEM TIME NAME\n" rd wr;
1322 | Active {rd_domid = id1 }, Active {rd_domid = id2} ->
1324 | Active _, Inactive -> -1
1325 | Inactive, Active _ -> 1
1326 | Inactive, Inactive -> 0)
1328 let cmp (name1, dom1) (name2, dom2) = compare(dom1, dom2) in
1329 List.sort ~cmp doms in
1331 let dump_domain = fun name rd
1333 let state = show_state rd.rd_info.D.state in
1334 let rd_req = if rd.rd_block_rd_info = None then " 0"
1335 else Show.int64_option rd.rd_block_rd_info in
1336 let wr_req = if rd.rd_block_wr_info = None then " 0"
1337 else Show.int64_option rd.rd_block_wr_info in
1338 let rx_bytes = if rd.rd_net_rx_bytes = None then " 0"
1339 else Show.int64_option rd.rd_net_rx_bytes in
1340 let tx_bytes = if rd.rd_net_tx_bytes = None then " 0"
1341 else Show.int64_option rd.rd_net_tx_bytes in
1342 let percent_cpu = Show.percent rd.rd_percent_cpu in
1343 let percent_mem = Int64.to_float rd.rd_mem_percent in
1344 let percent_mem = Show.percent percent_mem in
1345 let time = Show.time rd.rd_info.D.cpu_time in
1346 printf "%5d %c %s %s %s %s %s %s %s %s\n"
1347 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
1348 percent_cpu percent_mem time name;
1353 | name, Active dom -> dump_domain name dom
1354 | name, Inactive -> ()
1359 let rec main_loop ((_, batch_mode, script_mode, csv_enabled, stream_mode, _, _, _)
1361 if csv_enabled then write_csv_header ();
1364 let state = collect setup in (* Collect stats. *)
1365 (* Redraw display. *)
1366 if not script_mode && not stream_mode then redraw setup state;
1367 if csv_enabled then append_csv setup state; (* Update CSV file. *)
1368 if stream_mode then dump_stdout setup state; (* dump to stdout *)
1370 (* Clear up unused virDomainPtr objects. *)
1373 (* Max iterations? *)
1374 if !iterations >= 0 then (
1376 if !iterations = 0 then quit := true
1379 (* End time? We might need to adjust the precise delay down if
1380 * the delay would be longer than the end time (RHBZ#637964). Note
1381 * 'delay' is in milliseconds.
1384 match !end_time with
1386 (* No --end-time option, so use the current delay. *)
1389 let (_, time, _, _, _, _, _, _) = state in
1390 let delay_secs = float !delay /. 1000. in
1391 if end_time <= time +. delay_secs then (
1393 let delay = int_of_float (1000. *. (end_time -. time)) in
1394 if delay >= 0 then delay else 0
1397 (*eprintf "adjusted delay = %d\n%!" delay;*)
1399 (* Get next key. This does the sleep. *)
1400 if not batch_mode && not script_mode && not stream_mode then
1401 get_key_press setup delay
1403 (* Batch mode, script mode, stream mode. We didn't call
1404 * get_key_press, so we didn't sleep. Sleep now, unless we are
1407 if not !quit || !end_time <> None then
1412 and get_key_press setup delay =
1413 (* Read the next key, waiting up to 'delay' milliseconds. *)
1416 timeout (-1); (* Reset to blocking mode. *)
1418 if k >= 0 && k <> 32 (* ' ' *) && k <> 12 (* ^L *) && k <> Key.resize
1420 if k = Char.code 'q' then quit := true
1421 else if k = Char.code 'h' then show_help setup
1422 else if k = Char.code 's' || k = Char.code 'd' then change_delay ()
1423 else if k = Char.code 'M' then sort_order := Memory
1424 else if k = Char.code 'P' then sort_order := Processor
1425 else if k = Char.code 'T' then sort_order := Time
1426 else if k = Char.code 'N' then sort_order := DomainID
1427 else if k = Char.code 'F' then change_sort_order ()
1428 else if k = Char.code '0' then set_tasks_display ()
1429 else if k = Char.code '1' then toggle_pcpu_display ()
1430 else if k = Char.code '2' then toggle_net_display ()
1431 else if k = Char.code '3' then toggle_block_display ()
1432 else if k = Char.code 'W' then write_init_file ()
1433 else if k = Char.code 'B' then toggle_block_in_bytes_mode ()
1434 else unknown_command k
1437 and change_delay () =
1439 (sprintf (f_"Change delay from %.1f to: ") (float !delay /. 1000.));
1440 let str = get_string 16 in
1441 (* Try to parse the number. *)
1444 let newdelay = float_of_string str in
1445 if newdelay <= 0. then (
1446 print_msg (s_"Delay must be > 0"); true
1448 delay := int_of_float (newdelay *. 1000.); false
1451 Failure "float_of_string" ->
1452 print_msg (s_"Not a valid number"); true in
1454 sleep (if error then 2 else 1)
1456 and change_sort_order () =
1458 let lines, cols = get_size () in
1460 mvaddstr top_lineno 0 (s_"Set sort order for main display");
1461 mvaddstr summary_lineno 0 (s_"Type key or use up and down cursor keys.");
1464 mvaddstr header_lineno 0 (pad cols "KEY Sort field");
1467 let accelerator_key = function
1468 | Memory -> "(key: M)"
1469 | Processor -> "(key: P)"
1470 | Time -> "(key: T)"
1471 | DomainID -> "(key: N)"
1472 | _ -> (* all others have to be changed from here *) ""
1475 let rec key_of_int = function
1476 | i when i < 10 -> Char.chr (i + Char.code '0')
1477 | i when i < 20 -> Char.chr (i + Char.code 'a')
1479 and int_of_key = function
1480 | k when k >= 0x30 && k <= 0x39 (* '0' - '9' *) -> k - 0x30
1481 | k when k >= 0x61 && k <= 0x7a (* 'a' - 'j' *) -> k - 0x61 + 10
1482 | k when k >= 0x41 && k <= 0x6a (* 'A' - 'J' *) -> k - 0x41 + 10
1486 (* Display possible sort fields. *)
1487 let selected_index = ref 0 in
1490 let selected = !sort_order = ord in
1491 if selected then selected_index := i;
1492 mvaddstr (domains_lineno+i) 0
1493 (sprintf " %c %s %s %s"
1494 (key_of_int i) (if selected then "*" else " ")
1495 (printable_sort_order ord)
1496 (accelerator_key ord))
1499 move message_lineno 0;
1502 if k >= 0 && k <> 32 && k <> Char.code 'q' && k <> 13 then (
1503 let new_order, loop =
1504 (* Redraw the display. *)
1505 if k = 12 (* ^L *) then None, true
1506 (* Make the UP and DOWN arrow keys do something useful. *)
1507 else if k = Key.up then (
1508 if !selected_index > 0 then
1509 Some (List.nth all_sort_fields (!selected_index-1)), true
1513 else if k = Key.down then (
1514 if !selected_index < List.length all_sort_fields - 1 then
1515 Some (List.nth all_sort_fields (!selected_index+1)), true
1519 (* Also understand the regular accelerator keys. *)
1520 else if k = Char.code 'M' then
1522 else if k = Char.code 'P' then
1523 Some Processor, false
1524 else if k = Char.code 'T' then
1526 else if k = Char.code 'N' then
1527 Some DomainID, false
1529 (* It's one of the KEYs. *)
1530 let i = int_of_key k in
1531 if i >= 0 && i < List.length all_sort_fields then
1532 Some (List.nth all_sort_fields i), false
1537 (match new_order with
1540 sort_order := new_order;
1541 print_msg (sprintf "Sort order changed to: %s"
1542 (printable_sort_order new_order));
1549 if loop then change_sort_order ()
1552 (* Note: We need to clear_pcpu_display_data every time
1553 * we _leave_ PCPUDisplay mode.
1555 and set_tasks_display () = (* key 0 *)
1556 if !display_mode = PCPUDisplay then clear_pcpu_display_data ();
1557 display_mode := TaskDisplay
1559 and toggle_pcpu_display () = (* key 1 *)
1561 match !display_mode with
1562 | TaskDisplay | NetDisplay | BlockDisplay -> PCPUDisplay
1563 | PCPUDisplay -> clear_pcpu_display_data (); TaskDisplay
1565 and toggle_net_display () = (* key 2 *)
1567 match !display_mode with
1568 | PCPUDisplay -> clear_pcpu_display_data (); NetDisplay
1569 | TaskDisplay | BlockDisplay -> NetDisplay
1570 | NetDisplay -> TaskDisplay
1572 and toggle_block_display () = (* key 3 *)
1574 match !display_mode with
1575 | PCPUDisplay -> clear_pcpu_display_data (); BlockDisplay
1576 | TaskDisplay | NetDisplay -> BlockDisplay
1577 | BlockDisplay -> TaskDisplay
1579 and toggle_block_in_bytes_mode () = (* key B *)
1581 match !block_in_bytes with
1585 (* Write an init file. *)
1586 and write_init_file () =
1587 match !init_file with
1588 | NoInitFile -> () (* Do nothing if --no-init-file *)
1589 | DefaultInitFile ->
1590 let home = try Sys.getenv "HOME" with Not_found -> "/" in
1591 let filename = home // rcfile in
1592 _write_init_file filename
1593 | InitFile filename ->
1594 _write_init_file filename
1596 and _write_init_file filename =
1598 (* Create the new file as filename.new. *)
1599 let chan = open_out (filename ^ ".new") in
1601 let time = Unix.gettimeofday () in
1602 let tm = Unix.localtime time in
1603 let printable_date_time =
1604 sprintf "%04d-%02d-%02d %02d:%02d:%02d"
1605 (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon+1) tm.Unix.tm_mday
1606 tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
1609 let uid = Unix.geteuid () in
1610 (Unix.getpwuid uid).Unix.pw_name
1612 Not_found -> "unknown" in
1615 let nl () = fp chan "\n" in
1616 let () = fp chan (f_"# %s virt-top configuration file\n") rcfile in
1617 let () = fp chan (f_"# generated on %s by %s\n") printable_date_time username in
1619 fp chan "display %s\n" (cli_of_display !display_mode);
1620 fp chan "delay %g\n" (float !delay /. 1000.);
1621 fp chan "hist-cpu %d\n" !historical_cpu_delay;
1622 if !iterations <> -1 then fp chan "iterations %d\n" !iterations;
1623 fp chan "sort %s\n" (cli_of_sort_order !sort_order);
1626 | Some uri -> fp chan "connect %s\n" uri
1628 if !batch_mode = true then fp chan "batch true\n";
1629 if !secure_mode = true then fp chan "secure true\n";
1631 output_string chan (s_"# To send debug and error messages to a file, uncomment next line\n");
1632 fp chan "#debug virt-top.out\n";
1634 output_string chan (s_"# Enable CSV output to the named file\n");
1635 fp chan "#csv virt-top.csv\n";
1637 output_string chan (s_"# To protect this file from being overwritten, uncomment next line\n");
1638 fp chan "#overwrite-init-file false\n";
1642 (* If the file exists, rename it as filename.old. *)
1643 (try Unix.rename filename (filename ^ ".old")
1644 with Unix.Unix_error _ -> ());
1646 (* Rename filename.new to filename. *)
1647 Unix.rename (filename ^ ".new") filename;
1649 print_msg (sprintf (f_"Wrote settings to %s") filename);
1654 print_msg (s_"Error" ^ ": " ^ err);
1656 | Unix.Unix_error (err, fn, str) ->
1657 print_msg (s_"Error" ^ ": " ^
1658 (Unix.error_message err) ^ " " ^ fn ^ " " ^ str);
1662 and show_help (_, _, _, _, _, _, hostname,
1663 (libvirt_major, libvirt_minor, libvirt_release)) =
1666 (* Get the screen/window size. *)
1667 let lines, cols = get_size () in
1669 (* Banner at the top of the screen. *)
1671 sprintf (f_"virt-top %s ocaml-libvirt %s libvirt %d.%d.%d by Red Hat")
1672 Virt_top_version.version
1673 Libvirt_version.version
1674 libvirt_major libvirt_minor libvirt_release in
1675 let banner = pad cols banner in
1677 mvaddstr 0 0 banner;
1683 (f_"Delay: %.1f secs; Batch: %s; Secure: %s; Sort: %s")
1684 (float !delay /. 1000.)
1685 (if !batch_mode then s_"On" else s_"Off")
1686 (if !secure_mode then s_"On" else s_"Off")
1687 (printable_sort_order !sort_order));
1690 (f_"Connect: %s; Hostname: %s")
1691 (match !uri with None -> s_"default" | Some s -> s)
1694 (* Misc keys on left. *)
1695 let banner = pad 38 (s_"MAIN KEYS") in
1697 mvaddstr header_lineno 1 banner;
1701 let lineno = ref domains_lineno in
1702 fun () -> let i = !lineno in incr lineno; i
1704 let key keys description =
1705 let lineno = get_lineno () in
1706 move lineno 1; attron A.bold; addstr keys; attroff A.bold;
1707 move lineno 10; addstr description
1709 key "space ^L" (s_"Update display");
1711 key "d s" (s_"Set update interval");
1713 key "B" (s_"toggle block info req/bytes");
1716 ignore (get_lineno ());
1717 let banner = pad 38 (s_"SORTING") in
1719 mvaddstr (get_lineno ()) 1 banner;
1722 key "P" (s_"Sort by %CPU");
1723 key "M" (s_"Sort by %MEM");
1724 key "T" (s_"Sort by TIME");
1725 key "N" (s_"Sort by ID");
1726 key "F" (s_"Select sort field");
1728 (* Display modes on right. *)
1729 let banner = pad 39 (s_"DISPLAY MODES") in
1731 mvaddstr header_lineno 40 banner;
1735 let lineno = ref domains_lineno in
1736 fun () -> let i = !lineno in incr lineno; i
1738 let key keys description =
1739 let lineno = get_lineno () in
1740 move lineno 40; attron A.bold; addstr keys; attroff A.bold;
1741 move lineno 49; addstr description
1743 key "0" (s_"Domains display");
1744 key "1" (s_"Toggle physical CPUs");
1745 key "2" (s_"Toggle network interfaces");
1746 key "3" (s_"Toggle block devices");
1748 (* Update screen and wait for key press. *)
1749 mvaddstr (lines-1) 0
1750 (s_"More help in virt-top(1) man page. Press any key to return.");
1754 and unknown_command k =
1755 print_msg (s_"Unknown command - try 'h' for help");