1 (* 'top'-like tool for libvirt domains.
2 (C) Copyright 2007 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_block = ref true
130 let csv_net = ref true
131 let init_file = ref DefaultInitFile
132 let script_mode = ref false
134 (* Tuple of never-changing data returned by start_up function. *)
136 Libvirt.ro C.t * bool * bool * bool * C.node_info * string *
139 (* Function to read command line arguments and go into curses mode. *)
141 (* Read command line arguments. *)
142 let rec set_delay newdelay =
143 if newdelay <= 0. then
144 failwith (s_ "-d: cannot set a negative delay");
145 delay := int_of_float (newdelay *. 1000.)
146 and set_uri = function "" -> uri := None | u -> uri := Some u
147 and set_sort order = sort_order := sort_order_of_cli order
148 and set_pcpu_mode () = display_mode := PCPUDisplay
149 and set_net_mode () = display_mode := NetDisplay
150 and set_block_mode () = display_mode := BlockDisplay
151 and set_csv filename =
152 (!csv_start) filename;
154 and no_init_file () = init_file := NoInitFile
155 and set_init_file filename = init_file := InitFile filename
156 and set_end_time time = end_time := Some ((!parse_date_time) time)
157 and display_version () =
158 printf "virt-top %s ocaml-libvirt %s\n"
159 Virt_top_version.version Libvirt_version.version;
162 let argspec = Arg.align [
163 "-1", Arg.Unit set_pcpu_mode,
164 " " ^ s_ "Start by displaying pCPUs (default: tasks)";
165 "-2", Arg.Unit set_net_mode,
166 " " ^ s_ "Start by displaying network interfaces";
167 "-3", Arg.Unit set_block_mode,
168 " " ^ s_ "Start by displaying block devices";
169 "-b", Arg.Set batch_mode,
170 " " ^ s_ "Batch mode";
171 "-c", Arg.String set_uri,
172 "uri " ^ s_ "Connect to URI (default: Xen)";
173 "--connect", Arg.String set_uri,
174 "uri " ^ s_ "Connect to URI (default: Xen)";
175 "--csv", Arg.String set_csv,
176 "file " ^ s_ "Log statistics to CSV file";
177 "--no-csv-cpu", Arg.Clear csv_cpu,
178 " " ^ s_ "Disable CPU stats in CSV";
179 "--no-csv-block", Arg.Clear csv_block,
180 " " ^ s_ "Disable block device stats in CSV";
181 "--no-csv-net", Arg.Clear csv_net,
182 " " ^ s_ "Disable net stats in CSV";
183 "-d", Arg.Float set_delay,
184 "delay " ^ s_ "Delay time interval (seconds)";
185 "--debug", Arg.Set_string debug_file,
186 "file " ^ s_ "Send debug messages to file";
187 "--end-time", Arg.String set_end_time,
188 "time " ^ s_ "Exit at given time";
189 "--hist-cpu", Arg.Set_int historical_cpu_delay,
190 "secs " ^ s_ "Historical CPU delay";
191 "--init-file", Arg.String set_init_file,
192 "file " ^ s_ "Set name of init file";
193 "--no-init-file", Arg.Unit no_init_file,
194 " " ^ s_ "Do not read init file";
195 "-n", Arg.Set_int iterations,
196 "iterations " ^ s_ "Number of iterations to run";
197 "-o", Arg.String set_sort,
198 "sort " ^ sprintf (f_ "Set sort order (%s)") "cpu|mem|time|id|name";
199 "-s", Arg.Set secure_mode,
200 " " ^ s_ "Secure (\"kiosk\") mode";
201 "--script", Arg.Set script_mode,
202 " " ^ s_ "Run from a script (no user interface)";
203 "--version", Arg.Unit display_version,
204 " " ^ s_ "Display version number and exit";
207 raise (Arg.Bad (sprintf (f_ "%s: unknown parameter") str)) in
208 let usage_msg = s_ "virt-top : a 'top'-like utility for virtualization
214 Arg.parse argspec anon_fun usage_msg;
216 (* Read the init file. *)
217 let try_to_read_init_file filename =
218 let config = read_config_file filename in
221 | _, "display", mode -> display_mode := display_of_cli mode
222 | _, "delay", secs -> set_delay (float_of_string secs)
223 | _, "hist-cpu", secs -> historical_cpu_delay := int_of_string secs
224 | _, "iterations", n -> iterations := int_of_string n
225 | _, "sort", order -> set_sort order
226 | _, "connect", uri -> set_uri uri
227 | _, "debug", filename -> debug_file := filename
228 | _, "csv", filename -> set_csv filename
229 | _, "csv-cpu", b -> csv_cpu := bool_of_string b
230 | _, "csv-block", b -> csv_block := bool_of_string b
231 | _, "csv-net", b -> csv_net := bool_of_string b
232 | _, "batch", b -> batch_mode := bool_of_string b
233 | _, "secure", b -> secure_mode := bool_of_string b
234 | _, "script", b -> script_mode := bool_of_string b
235 | _, "end-time", t -> set_end_time t
236 | _, "overwrite-init-file", "false" -> no_init_file ()
238 eprintf (f_ "%s:%d: configuration item ``%s'' ignored\n%!")
242 (match !init_file with
245 let home = try Sys.getenv "HOME" with Not_found -> "/" in
246 let filename = home // rcfile in
247 try_to_read_init_file filename
248 | InitFile filename ->
249 try_to_read_init_file filename
252 (* Connect to the hypervisor before going into curses mode, since
253 * this is the most likely thing to fail.
257 try C.connect_readonly ?name ()
259 Libvirt.Virterror err ->
260 prerr_endline (Libvirt.Virterror.to_string err);
261 (* If non-root and no explicit connection URI, print a warning. *)
262 if Unix.geteuid () <> 0 && name = None then (
263 print_endline (s_ "NB: If you want to monitor a local Xen hypervisor, you usually need to be root");
267 (* Get the node_info. This never changes, right? So we get it just once. *)
268 let node_info = C.get_node_info conn in
270 (* Hostname and libvirt library version also don't change. *)
272 try C.get_hostname conn
274 (* qemu:/// and other URIs didn't support virConnectGetHostname until
275 * libvirt 0.3.3. Before that they'd throw a virterror. *)
276 | Libvirt.Virterror _
277 | Libvirt.Not_supported "virConnectGetHostname" -> "unknown" in
279 let libvirt_version =
280 let v, _ = Libvirt.get_version () in
281 v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
283 (* Open debug file if specified.
284 * NB: Do this just before jumping into curses mode.
286 (match !debug_file with
287 | "" -> (* No debug file specified, send stderr to /dev/null unless
288 * we're in script mode.
290 if not !script_mode then (
291 let fd = Unix.openfile "/dev/null" [Unix.O_WRONLY] 0o644 in
292 Unix.dup2 fd Unix.stderr;
295 | filename -> (* Send stderr to the named file. *)
297 Unix.openfile filename [Unix.O_WRONLY;Unix.O_CREAT;Unix.O_TRUNC]
299 Unix.dup2 fd Unix.stderr;
303 (* Curses voodoo (see ncurses(3)). *)
304 if not !script_mode then (
309 let stdscr = stdscr () in
310 ignore (intrflush stdscr false);
311 ignore (keypad stdscr true);
315 (* This tuple of static information is called 'setup' in other parts
316 * of this program, and is passed to other functions such as redraw and
317 * main_loop. See virt_top_main.ml.
320 !batch_mode, !script_mode, !csv_enabled, (* immutable modes *)
321 node_info, hostname, libvirt_version (* info that doesn't change *)
324 (* Show a domain state (the 'S' column). *)
325 let show_state = function
326 | D.InfoNoState -> '?'
327 | D.InfoRunning -> 'R'
328 | D.InfoBlocked -> 'S'
329 | D.InfoPaused -> 'P'
330 | D.InfoShutdown -> 'D'
331 | D.InfoShutoff -> 'O'
332 | D.InfoCrashed -> 'X'
334 (* Sleep in seconds. *)
335 let sleep = Unix.sleep
337 (* Sleep in milliseconds. *)
339 ignore (Unix.select [] [] [] (float n /. 1000.))
341 (* The curses getstr/getnstr functions are just weird.
342 * This helper function also enables echo temporarily.
344 let get_string maxlen =
346 let str = String.create maxlen in
347 let ok = getstr str in (* Safe because binding calls getnstr. *)
351 (* Chop at first '\0'. *)
353 let i = String.index str '\000' in
356 Not_found -> str (* it is full maxlen bytes *)
361 let summary_lineno = 1 (* this takes 2 lines *)
362 let message_lineno = 3
363 let header_lineno = 4
364 let domains_lineno = 5
366 (* Print in the "message area". *)
367 let clear_msg () = ignore (move message_lineno 0); clrtoeol ()
368 let print_msg str = clear_msg (); ignore (mvaddstr message_lineno 0 str)
370 (* Intermediate "domain + stats" structure that we use to collect
371 * everything we know about a domain within the collect function.
373 type rd_domain = Inactive | Active of rd_active
375 rd_domid : int; (* Domain ID. *)
376 rd_dom : [`R] D.t; (* Domain object. *)
377 rd_info : D.info; (* Domain CPU info now. *)
378 rd_block_stats : (string * D.block_stats) list;
379 (* Domain block stats now. *)
380 rd_interface_stats : (string * D.interface_stats) list;
381 (* Domain net stats now. *)
382 rd_prev_info : D.info option; (* Domain CPU info previously. *)
383 rd_prev_block_stats : (string * D.block_stats) list;
384 (* Domain block stats prev. *)
385 rd_prev_interface_stats : (string * D.interface_stats) list;
386 (* Domain interface stats prev. *)
387 (* The following are since the last slice, or 0 if cannot be calculated: *)
388 rd_cpu_time : float; (* CPU time used in nanoseconds. *)
389 rd_percent_cpu : float; (* CPU time as percent of total. *)
390 (* The following are since the last slice, or None if cannot be calc'd: *)
391 rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
392 rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
393 rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
394 rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
398 let collect, clear_pcpu_display_data =
399 (* We cache the list of block devices and interfaces for each domain
400 * here, so we don't need to reparse the XML each time.
402 let devices = Hashtbl.create 13 in
404 (* Function to get the list of block devices, network interfaces for
405 * a particular domain. Get it from the devices cache, and if not
406 * there then parse the domain XML.
408 let get_devices id dom =
409 try Hashtbl.find devices id
411 let blkdevs, netifs = (!parse_device_xml) id dom in
412 Hashtbl.replace devices id (blkdevs, netifs);
416 (* We save the state of domains across redraws here, which allows us
417 * to deduce %CPU usage from the running total.
419 let last_info = Hashtbl.create 13 in
420 let last_time = ref (Unix.gettimeofday ()) in
422 (* Save vcpuinfo structures across redraws too (only for pCPU display). *)
423 let last_vcpu_info = Hashtbl.create 13 in
425 let clear_pcpu_display_data () =
426 (* Clear out vcpu_info used by PCPUDisplay display_mode
427 * when we switch back to TaskDisplay mode.
429 Hashtbl.clear last_vcpu_info
432 let collect (conn, _, _, _, node_info, _, _) =
433 (* Number of physical CPUs (some may be disabled). *)
434 let nr_pcpus = C.maxcpus_of_node_info node_info in
436 (* Get the current time. *)
437 let time = Unix.gettimeofday () in
438 let tm = Unix.localtime time in
440 sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
442 (* What's the total CPU time elapsed since we were last called? (ns) *)
443 let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
444 (* Avoid division by zero. *)
445 let total_cpu_per_pcpu =
446 if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
447 let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
449 (* Get the domains. Match up with their last_info (if any). *)
451 (* Active domains. *)
452 let n = C.num_of_domains conn in
454 if n > 0 then Array.to_list (C.list_domains conn n)
460 let dom = D.lookup_by_id conn id in
461 let name = D.get_name dom in
462 let blkdevs, netifs = get_devices id dom in
464 (* Get current CPU, block and network stats. *)
465 let info = D.get_info dom in
467 try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
469 | Libvirt.Not_supported "virDomainBlockStats"
470 | Libvirt.Virterror _ -> [] in
471 let interface_stats =
472 try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
474 | Libvirt.Not_supported "virDomainInterfaceStats"
475 | Libvirt.Virterror _ -> [] in
477 let prev_info, prev_block_stats, prev_interface_stats =
479 let prev_info, prev_block_stats, prev_interface_stats =
480 Hashtbl.find last_info id in
481 Some prev_info, prev_block_stats, prev_interface_stats
482 with Not_found -> None, [], [] in
485 rd_domid = id; rd_dom = dom; rd_info = info;
486 rd_block_stats = block_stats;
487 rd_interface_stats = interface_stats;
488 rd_prev_info = prev_info;
489 rd_prev_block_stats = prev_block_stats;
490 rd_prev_interface_stats = prev_interface_stats;
491 rd_cpu_time = 0.; rd_percent_cpu = 0.;
492 rd_block_rd_reqs = None; rd_block_wr_reqs = None;
493 rd_net_rx_bytes = None; rd_net_tx_bytes = None;
496 Libvirt.Virterror _ -> None (* ignore transient error *)
499 (* Inactive domains. *)
502 let n = C.num_of_defined_domains conn in
504 if n > 0 then Array.to_list (C.list_defined_domains conn n)
506 List.map (fun name -> name, Inactive) names
508 (* Ignore transient errors, in particular errors from
509 * num_of_defined_domains if it cannot contact xend.
511 | Libvirt.Virterror _ -> [] in
513 doms @ doms_inactive in
515 (* Calculate the CPU time (ns) and %CPU used by each domain. *)
519 (* We have previous CPU info from which to calculate it? *)
520 | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
522 Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
523 let percent_cpu = 100. *. cpu_time /. total_cpu in
525 rd_cpu_time = cpu_time;
526 rd_percent_cpu = percent_cpu } in
528 (* For all other domains we can't calculate it, so leave as 0 *)
532 (* Calculate the number of block device read/write requests across
533 * all block devices attached to a domain.
538 (* Do we have stats from the previous slice? *)
539 | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
541 let block_stats = rd.rd_block_stats in (* stats now *)
543 (* Add all the devices together. Throw away device names. *)
544 let prev_block_stats =
545 sum_block_stats (List.map snd prev_block_stats) in
547 sum_block_stats (List.map snd block_stats) in
549 (* Calculate increase in read & write requests. *)
551 block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
553 block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
556 rd_block_rd_reqs = Some read_reqs;
557 rd_block_wr_reqs = Some write_reqs } in
559 (* For all other domains we can't calculate it, so leave as None. *)
563 (* Calculate the same as above for network interfaces across
564 * all network interfaces attached to a domain.
569 (* Do we have stats from the previous slice? *)
570 | name, Active ({ rd_prev_interface_stats =
571 ((_::_) as prev_interface_stats) }
573 let interface_stats = rd.rd_interface_stats in (* stats now *)
575 (* Add all the devices together. Throw away device names. *)
576 let prev_interface_stats =
577 sum_interface_stats (List.map snd prev_interface_stats) in
578 let interface_stats =
579 sum_interface_stats (List.map snd interface_stats) in
581 (* Calculate increase in rx & tx bytes. *)
583 interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
585 interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
588 rd_net_rx_bytes = Some rx_bytes;
589 rd_net_tx_bytes = Some tx_bytes } in
591 (* For all other domains we can't calculate it, so leave as None. *)
595 (* Collect some extra information in PCPUDisplay display_mode. *)
597 if !display_mode = PCPUDisplay then (
598 (* Get the VCPU info and VCPU->PCPU mappings for active domains.
599 * Also cull some data we don't care about.
601 let doms = List.filter_map (
603 | (name, Active rd) ->
605 let domid = rd.rd_domid in
606 let maplen = C.cpumaplen nr_pcpus in
607 let maxinfo = rd.rd_info.D.nr_virt_cpu in
608 let nr_vcpus, vcpu_infos, cpumaps =
609 D.get_vcpus rd.rd_dom maxinfo maplen in
611 (* Got previous vcpu_infos for this domain? *)
612 let prev_vcpu_infos =
613 try Some (Hashtbl.find last_vcpu_info domid)
614 with Not_found -> None in
615 (* Update last_vcpu_info. *)
616 Hashtbl.replace last_vcpu_info domid vcpu_infos;
618 (match prev_vcpu_infos with
619 | Some prev_vcpu_infos
620 when Array.length prev_vcpu_infos = Array.length vcpu_infos ->
621 Some (domid, name, nr_vcpus, vcpu_infos, prev_vcpu_infos,
623 | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
626 Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
628 | (_, Inactive) -> None (* ignore inactive doms *)
630 let nr_doms = List.length doms in
632 (* Rearrange the data into a matrix. Major axis (down) is
633 * pCPUs. Minor axis (right) is domains. At each node we store:
634 * cpu_time (on this pCPU only, nanosecs),
635 * average? (if set, then cpu_time is an average because the
636 * vCPU is pinned to more than one pCPU)
637 * running? (if set, we were instantaneously running on this pCPU)
639 let empty_node = (0L, false, false) in
640 let pcpus = Array.make_matrix nr_pcpus nr_doms empty_node in
643 fun di (domid, name, nr_vcpus, vcpu_infos, prev_vcpu_infos,
645 (* Which pCPUs can this dom run on? *)
646 for v = 0 to nr_vcpus-1 do
647 let pcpu = vcpu_infos.(v).D.cpu in (* instantaneous pCPU *)
648 let nr_poss_pcpus = ref 0 in (* how many pcpus can it run on? *)
649 for p = 0 to nr_pcpus-1 do
650 (* vcpu v can reside on pcpu p *)
651 if C.cpu_usable cpumaps maplen v p then
654 let nr_poss_pcpus = Int64.of_int !nr_poss_pcpus in
655 for p = 0 to nr_pcpus-1 do
656 (* vcpu v can reside on pcpu p *)
657 if C.cpu_usable cpumaps maplen v p then
658 let vcpu_time_on_pcpu =
659 vcpu_infos.(v).D.vcpu_time
660 -^ prev_vcpu_infos.(v).D.vcpu_time in
661 let vcpu_time_on_pcpu =
662 vcpu_time_on_pcpu /^ nr_poss_pcpus in
664 (vcpu_time_on_pcpu, nr_poss_pcpus > 1L, p = pcpu)
669 (* Sum the CPU time used by each pCPU, for the %CPU column. *)
670 let pcpus_cpu_time = Array.map (
672 let cpu_time = ref 0L in
673 for di = 0 to Array.length row-1 do
674 let t, _, _ = row.(di) in
675 cpu_time := !cpu_time +^ t
677 Int64.to_float !cpu_time
680 Some (doms, pcpus, pcpus_cpu_time)
684 (* Calculate totals. *)
685 let totals = List.fold_left (
686 fun (count, running, blocked, paused, shutdown, shutoff,
687 crashed, active, inactive,
688 total_cpu_time, total_memory, total_domU_memory) ->
690 | (name, Active rd) ->
691 let test state orig =
692 if rd.rd_info.D.state = state then orig+1 else orig
694 let running = test D.InfoRunning running in
695 let blocked = test D.InfoBlocked blocked in
696 let paused = test D.InfoPaused paused in
697 let shutdown = test D.InfoShutdown shutdown in
698 let shutoff = test D.InfoShutoff shutoff in
699 let crashed = test D.InfoCrashed crashed in
701 let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
702 let total_memory = total_memory +^ rd.rd_info.D.memory in
703 let total_domU_memory = total_domU_memory +^
704 if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
706 (count+1, running, blocked, paused, shutdown, shutoff,
707 crashed, active+1, inactive,
708 total_cpu_time, total_memory, total_domU_memory)
710 | (name, Inactive) -> (* inactive domain *)
711 (count+1, running, blocked, paused, shutdown, shutoff,
712 crashed, active, inactive+1,
713 total_cpu_time, total_memory, total_domU_memory)
714 ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
716 (* Update last_time, last_info. *)
718 Hashtbl.clear last_info;
722 let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
723 Hashtbl.add last_info rd.rd_domid info
728 time, printable_time,
729 nr_pcpus, total_cpu, total_cpu_per_pcpu,
734 collect, clear_pcpu_display_data
736 (* Redraw the display. *)
738 (* Keep a historical list of %CPU usages. *)
739 let historical_cpu = ref [] in
740 let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
742 (_, _, _, _, node_info, _, _) (* setup *)
744 time, printable_time,
745 nr_pcpus, total_cpu, total_cpu_per_pcpu,
747 pcpu_display) (* state *) ->
750 (* Get the screen/window size. *)
751 let lines, cols = get_size () in
754 ignore (mvaddstr top_lineno 0 ("virt-top " ^ printable_time ^ " - "));
756 (* Basic node_info. *)
758 (sprintf "%s %d/%dCPU %dMHz %LdMB "
759 node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
760 (node_info.C.memory /^ 1024L)));
761 (* Save the cursor position for when we come to draw the
762 * historical CPU times (down in this function).
764 let stdscr = stdscr () in
765 let historical_cursor = getyx stdscr in
767 (match !display_mode with
768 | TaskDisplay -> (*---------- Showing domains ----------*)
769 (* Sort domains on current sort_order. *)
772 match !sort_order with
774 (fun _ -> 0) (* fallthrough to default name compare *)
777 | Active rd1, Active rd2 ->
778 compare rd2.rd_percent_cpu rd1.rd_percent_cpu
779 | Active _, Inactive -> -1
780 | Inactive, Active _ -> 1
781 | Inactive, Inactive -> 0)
784 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
785 compare info2.D.memory info1.D.memory
786 | Active _, Inactive -> -1
787 | Inactive, Active _ -> 1
788 | Inactive, Inactive -> 0)
791 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
792 compare info2.D.cpu_time info1.D.cpu_time
793 | Active _, Inactive -> -1
794 | Inactive, Active _ -> 1
795 | Inactive, Inactive -> 0)
798 | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
800 | Active _, Inactive -> -1
801 | Inactive, Active _ -> 1
802 | Inactive, Inactive -> 0)
805 | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
807 | Active _, Inactive -> -1
808 | Inactive, Active _ -> 1
809 | Inactive, Inactive -> 0)
812 | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
814 | Active _, Inactive -> -1
815 | Inactive, Active _ -> 1
816 | Inactive, Inactive -> 0)
819 | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
821 | Active _, Inactive -> -1
822 | Inactive, Active _ -> 1
823 | Inactive, Inactive -> 0)
826 | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
828 | Active _, Inactive -> -1
829 | Inactive, Active _ -> 1
830 | Inactive, Inactive -> 0)
832 let cmp (name1, dom1) (name2, dom2) =
833 let r = cmp (dom1, dom2) in
835 else compare name1 name2
837 List.sort ~cmp doms in
842 mvaddstr header_lineno 0
843 (pad cols " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"));
846 let rec loop lineno = function
848 | (name, Active rd) :: doms ->
849 if lineno < lines then (
850 let state = show_state rd.rd_info.D.state in
851 let rd_req = Show.int64_option rd.rd_block_rd_reqs in
852 let wr_req = Show.int64_option rd.rd_block_wr_reqs in
853 let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
854 let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
855 let percent_cpu = Show.percent rd.rd_percent_cpu in
857 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
858 let percent_mem = Int64.to_float percent_mem in
859 let percent_mem = Show.percent percent_mem in
860 let time = Show.time rd.rd_info.D.cpu_time in
862 let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
863 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
864 percent_cpu percent_mem time name in
865 let line = pad cols line in
866 ignore (mvaddstr lineno 0 line);
869 | (name, Inactive) :: doms -> (* inactive domain *)
870 if lineno < lines then (
875 let line = pad cols line in
876 ignore (mvaddstr lineno 0 line);
880 loop domains_lineno doms
882 | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
883 let doms, pcpus, pcpus_cpu_time =
884 match pcpu_display with
886 | None -> failwith "internal error: no pcpu_display data" in
888 (* Display the pCPUs. *)
892 fun (_, name, _, _, _, _, _) ->
893 let len = String.length name in
894 let width = max (len+1) 7 in
900 mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names)));
905 ignore (mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p));
906 let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
907 let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
908 ignore (addstr (Show.percent percent_cpu));
912 fun di (domid, name, _, _, _, _, _) ->
913 let t, is_average, is_running = pcpus.(p).(di) in
914 let len = String.length name in
915 let width = max (len+1) 7 in
919 let t = Int64.to_float t in
920 let percent = 100. *. t /. total_cpu_per_pcpu in
921 sprintf "%s%c%c " (Show.percent percent)
922 (if is_average then '=' else ' ')
923 (if is_running then '#' else ' ')
925 ignore (addstr (pad width str));
930 | NetDisplay -> (*---------- Showing network interfaces ----------*)
931 (* Only care about active domains. *)
932 let doms = List.filter_map (
934 | (name, Active rd) -> Some (name, rd)
935 | (_, Inactive) -> None
938 (* For each domain we have a list of network interfaces seen
939 * this slice, and seen in the previous slice, which we now
940 * match up to get a list of (domain, interface) for which
941 * we have current & previous knowledge. (And ignore the rest).
949 (* Have prev slice stats for this device? *)
951 List.assoc dev rd.rd_prev_interface_stats in
952 Some (dev, name, rd, stats, prev_stats)
953 with Not_found -> None
954 ) rd.rd_interface_stats
957 (* Finally we have a list of:
958 * device name, domain name, rd_* stuff, curr stats, prev stats.
960 let devs : (string * string * rd_active *
961 D.interface_stats * D.interface_stats) list =
964 (* Difference curr slice & prev slice. *)
965 let devs = List.map (
966 fun (dev, name, rd, curr, prev) ->
967 dev, name, rd, diff_interface_stats curr prev
970 (* Sort by current sort order, but map some of the standard
971 * sort orders into ones which makes sense here.
975 match !sort_order with
977 (fun _ -> 0) (* fallthrough to default name compare *)
979 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
981 | Processor | Memory | Time | BlockRdRq | BlockWrRq
982 (* fallthrough to RXBY comparison. *)
984 (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
987 (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
990 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
991 let r = cmp (stats1, rd1, stats2, rd2) in
993 else compare (dev1, name1) (dev2, name2)
995 List.sort ~cmp devs in
997 (* Print the header for network devices. *)
1000 mvaddstr header_lineno 0
1001 (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE"));
1004 (* Print domains and devices. *)
1005 let rec loop lineno = function
1007 | (dev, name, rd, stats) :: devs ->
1008 if lineno < lines then (
1009 let state = show_state rd.rd_info.D.state in
1011 if stats.D.rx_bytes >= 0L
1012 then Show.int64 stats.D.rx_bytes
1015 if stats.D.tx_bytes >= 0L
1016 then Show.int64 stats.D.tx_bytes
1019 if stats.D.rx_packets >= 0L
1020 then Show.int64 stats.D.rx_packets
1023 if stats.D.tx_packets >= 0L
1024 then Show.int64 stats.D.tx_packets
1027 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1030 rx_packets tx_packets
1031 (pad 12 name) dev in
1032 let line = pad cols line in
1033 ignore (mvaddstr lineno 0 line);
1034 loop (lineno+1) devs
1037 loop domains_lineno devs
1039 | BlockDisplay -> (*---------- Showing block devices ----------*)
1040 (* Only care about active domains. *)
1041 let doms = List.filter_map (
1043 | (name, Active rd) -> Some (name, rd)
1044 | (_, Inactive) -> None
1047 (* For each domain we have a list of block devices seen
1048 * this slice, and seen in the previous slice, which we now
1049 * match up to get a list of (domain, device) for which
1050 * we have current & previous knowledge. (And ignore the rest).
1058 (* Have prev slice stats for this device? *)
1060 List.assoc dev rd.rd_prev_block_stats in
1061 Some (dev, name, rd, stats, prev_stats)
1062 with Not_found -> None
1066 (* Finally we have a list of:
1067 * device name, domain name, rd_* stuff, curr stats, prev stats.
1069 let devs : (string * string * rd_active *
1070 D.block_stats * D.block_stats) list =
1071 List.flatten devs in
1073 (* Difference curr slice & prev slice. *)
1074 let devs = List.map (
1075 fun (dev, name, rd, curr, prev) ->
1076 dev, name, rd, diff_block_stats curr prev
1079 (* Sort by current sort order, but map some of the standard
1080 * sort orders into ones which makes sense here.
1084 match !sort_order with
1086 (fun _ -> 0) (* fallthrough to default name compare *)
1088 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1090 | Processor | Memory | Time | NetRX | NetTX
1091 (* fallthrough to RDRQ comparison. *)
1093 (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
1096 (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
1099 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1100 let r = cmp (stats1, rd1, stats2, rd2) in
1102 else compare (dev1, name1) (dev2, name2)
1104 List.sort ~cmp devs in
1106 (* Print the header for block devices. *)
1109 mvaddstr header_lineno 0
1110 (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE"));
1113 (* Print domains and devices. *)
1114 let rec loop lineno = function
1116 | (dev, name, rd, stats) :: devs ->
1117 if lineno < lines then (
1118 let state = show_state rd.rd_info.D.state in
1120 if stats.D.rd_bytes >= 0L
1121 then Show.int64 stats.D.rd_bytes
1124 if stats.D.wr_bytes >= 0L
1125 then Show.int64 stats.D.wr_bytes
1128 if stats.D.rd_req >= 0L
1129 then Show.int64 stats.D.rd_req
1132 if stats.D.wr_req >= 0L
1133 then Show.int64 stats.D.wr_req
1136 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1140 (pad 12 name) dev in
1141 let line = pad cols line in
1142 ignore (mvaddstr lineno 0 line);
1143 loop (lineno+1) devs
1146 loop domains_lineno devs
1147 ); (* end of display_mode conditional section *)
1149 let (count, running, blocked, paused, shutdown, shutoff,
1150 crashed, active, inactive,
1151 total_cpu_time, total_memory, total_domU_memory) = totals in
1154 mvaddstr summary_lineno 0
1155 (sprintf (f_ "%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
1156 count active running blocked paused inactive shutdown shutoff
1159 (* Total %CPU used, and memory summary. *)
1160 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1162 mvaddstr (summary_lineno+1) 0
1163 (sprintf (f_ "CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
1164 percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L)));
1166 (* Time to grab another historical %CPU for the list? *)
1167 if time >= !historical_cpu_last_time +. float !historical_cpu_delay
1169 historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
1170 historical_cpu_last_time := time
1173 (* Display historical CPU time. *)
1175 let x, y = historical_cursor in (* Yes, it's a bug in ocaml-curses *)
1176 let maxwidth = cols - x in
1179 (List.map (sprintf "%2.1f%%") !historical_cpu) in
1180 let line = pad maxwidth line in
1181 ignore (mvaddstr y x line);
1184 (* Park cursor in message area, as with top. *)
1185 ignore (move message_lineno 0);
1186 ignore (refresh ()); (* Refresh the display. *)
1189 (* Write CSV header row. *)
1190 let write_csv_header () =
1192 [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
1193 "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
1194 "Shutoff"; "Crashed"; "Active"; "Inactive";
1196 "Total hardware memory (KB)";
1197 "Total memory (KB)"; "Total guest memory (KB)";
1198 "Total CPU time (ns)" ] @
1199 (* These fields are repeated for each domain: *)
1200 [ "Domain ID"; "Domain name"; ] @
1201 (if !csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
1202 (if !csv_block then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
1203 (if !csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
1206 (* Write summary data to CSV file. *)
1208 (_, _, _, _, node_info, hostname, _) (* setup *)
1211 nr_pcpus, total_cpu, _,
1215 (* The totals / summary fields. *)
1216 let (count, running, blocked, paused, shutdown, shutoff,
1217 crashed, active, inactive,
1218 total_cpu_time, total_memory, total_domU_memory) = totals in
1220 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1222 let summary_fields = [
1223 hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
1224 string_of_int count; string_of_int running; string_of_int blocked;
1225 string_of_int paused; string_of_int shutdown; string_of_int shutoff;
1226 string_of_int crashed; string_of_int active; string_of_int inactive;
1227 sprintf "%2.1f" percent_cpu;
1228 Int64.to_string node_info.C.memory;
1229 Int64.to_string total_memory; Int64.to_string total_domU_memory;
1230 Int64.to_string (Int64.of_float total_cpu_time)
1235 * Sort them by ID so that the list of relatively stable. Ignore
1238 let doms = List.filter_map (
1240 | _, Inactive -> None (* Ignore inactive domains. *)
1241 | name, Active rd -> Some (name, rd)
1243 let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
1244 compare rd_domid1 rd_domid2
1246 let doms = List.sort ~cmp doms in
1248 let string_of_int64_option = Option.map_default Int64.to_string "" in
1250 let domain_fields = List.map (
1251 fun (domname, rd) ->
1252 [ string_of_int rd.rd_domid; domname ] @
1254 string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
1256 (if !csv_block then [
1257 string_of_int64_option rd.rd_block_rd_reqs;
1258 string_of_int64_option rd.rd_block_wr_reqs;
1261 string_of_int64_option rd.rd_net_rx_bytes;
1262 string_of_int64_option rd.rd_net_tx_bytes;
1265 let domain_fields = List.flatten domain_fields in
1267 (!csv_write) (summary_fields @ domain_fields)
1270 let rec main_loop ((_, batch_mode, script_mode, csv_enabled, _, _, _)
1272 if csv_enabled then write_csv_header ();
1275 let state = collect setup in (* Collect stats. *)
1276 if not script_mode then redraw setup state; (* Redraw display. *)
1277 if csv_enabled then append_csv setup state; (* Update CSV file. *)
1279 (* Clear up unused virDomainPtr objects. *)
1282 (* Get next key. This does the sleep. *)
1283 if not batch_mode && not script_mode then
1284 get_key_press setup;
1286 (* Max iterations? *)
1287 if !iterations >= 0 then (
1289 if !iterations = 0 then quit := true
1293 (match !end_time with
1296 let (_, time, _, _, _, _, _, _) = state in
1297 let delay_secs = float !delay /. 1000. in
1298 if end_time <= time +. delay_secs then quit := true
1301 (* Batch mode or script mode. We didn't call get_key_press above, so
1302 * we didn't sleep. Sleep now, unless we are about to quit.
1304 if batch_mode || script_mode then
1309 and get_key_press setup =
1310 (* Read the next key, waiting up to !delay milliseconds. *)
1313 timeout (-1); (* Reset to blocking mode. *)
1315 if k >= 0 && k <> 32 (* ' ' *) && k <> 12 (* ^L *) && k <> Key.resize
1317 if k = Char.code 'q' then quit := true
1318 else if k = Char.code 'h' then show_help setup
1319 else if k = Char.code 's' || k = Char.code 'd' then change_delay ()
1320 else if k = Char.code 'M' then sort_order := Memory
1321 else if k = Char.code 'P' then sort_order := Processor
1322 else if k = Char.code 'T' then sort_order := Time
1323 else if k = Char.code 'N' then sort_order := DomainID
1324 else if k = Char.code 'F' then change_sort_order ()
1325 else if k = Char.code '0' then set_tasks_display ()
1326 else if k = Char.code '1' then toggle_pcpu_display ()
1327 else if k = Char.code '2' then toggle_net_display ()
1328 else if k = Char.code '3' then toggle_block_display ()
1329 else if k = Char.code 'W' then write_init_file ()
1330 else unknown_command k
1333 and change_delay () =
1335 (sprintf (f_ "Change delay from %.1f to: ") (float !delay /. 1000.));
1336 let str = get_string 16 in
1337 (* Try to parse the number. *)
1340 let newdelay = float_of_string str in
1341 if newdelay <= 0. then (
1342 print_msg (s_ "Delay must be > 0"); true
1344 delay := int_of_float (newdelay *. 1000.); false
1347 Failure "float_of_string" ->
1348 print_msg (s_ "Not a valid number"); true in
1349 ignore (refresh ());
1350 sleep (if error then 2 else 1)
1352 and change_sort_order () =
1354 let lines, cols = get_size () in
1356 ignore (mvaddstr top_lineno 0 (s_ "Set sort order for main display"));
1357 ignore (mvaddstr summary_lineno 0 (s_ "Type key or use up and down cursor keys."));
1360 ignore (mvaddstr header_lineno 0 (pad cols "KEY Sort field"));
1363 let accelerator_key = function
1364 | Memory -> "(key: M)"
1365 | Processor -> "(key: P)"
1366 | Time -> "(key: T)"
1367 | DomainID -> "(key: N)"
1368 | _ -> (* all others have to be changed from here *) ""
1371 let rec key_of_int = function
1372 | i when i < 10 -> Char.chr (i + Char.code '0')
1373 | i when i < 20 -> Char.chr (i + Char.code 'a')
1375 and int_of_key = function
1376 | k when k >= 0x30 && k <= 0x39 (* '0' - '9' *) -> k - 0x30
1377 | k when k >= 0x61 && k <= 0x7a (* 'a' - 'j' *) -> k - 0x61 + 10
1378 | k when k >= 0x41 && k <= 0x6a (* 'A' - 'J' *) -> k - 0x41 + 10
1382 (* Display possible sort fields. *)
1383 let selected_index = ref 0 in
1386 let selected = !sort_order = ord in
1387 if selected then selected_index := i;
1388 ignore (mvaddstr (domains_lineno+i) 0
1389 (sprintf " %c %s %s %s"
1390 (key_of_int i) (if selected then "*" else " ")
1391 (printable_sort_order ord)
1392 (accelerator_key ord)))
1395 ignore (move message_lineno 0);
1396 ignore (refresh ());
1398 if k >= 0 && k <> 32 && k <> Char.code 'q' && k <> 13 then (
1399 let new_order, loop =
1400 (* Redraw the display. *)
1401 if k = 12 (* ^L *) then None, true
1402 (* Make the UP and DOWN arrow keys do something useful. *)
1403 else if k = Key.up then (
1404 if !selected_index > 0 then
1405 Some (List.nth all_sort_fields (!selected_index-1)), true
1409 else if k = Key.down then (
1410 if !selected_index < List.length all_sort_fields - 1 then
1411 Some (List.nth all_sort_fields (!selected_index+1)), true
1415 (* Also understand the regular accelerator keys. *)
1416 else if k = Char.code 'M' then
1418 else if k = Char.code 'P' then
1419 Some Processor, false
1420 else if k = Char.code 'T' then
1422 else if k = Char.code 'N' then
1423 Some DomainID, false
1425 (* It's one of the KEYs. *)
1426 let i = int_of_key k in
1427 if i >= 0 && i < List.length all_sort_fields then
1428 Some (List.nth all_sort_fields i), false
1433 (match new_order with
1436 sort_order := new_order;
1437 print_msg (sprintf "Sort order changed to: %s"
1438 (printable_sort_order new_order));
1440 ignore (refresh ());
1445 if loop then change_sort_order ()
1448 (* Note: We need to clear_pcpu_display_data every time
1449 * we _leave_ PCPUDisplay mode.
1451 and set_tasks_display () = (* key 0 *)
1452 if !display_mode = PCPUDisplay then clear_pcpu_display_data ();
1453 display_mode := TaskDisplay
1455 and toggle_pcpu_display () = (* key 1 *)
1457 match !display_mode with
1458 | TaskDisplay | NetDisplay | BlockDisplay -> PCPUDisplay
1459 | PCPUDisplay -> clear_pcpu_display_data (); TaskDisplay
1461 and toggle_net_display () = (* key 2 *)
1463 match !display_mode with
1464 | PCPUDisplay -> clear_pcpu_display_data (); NetDisplay
1465 | TaskDisplay | BlockDisplay -> NetDisplay
1466 | NetDisplay -> TaskDisplay
1468 and toggle_block_display () = (* key 3 *)
1470 match !display_mode with
1471 | PCPUDisplay -> clear_pcpu_display_data (); BlockDisplay
1472 | TaskDisplay | NetDisplay -> BlockDisplay
1473 | BlockDisplay -> TaskDisplay
1475 (* Write an init file. *)
1476 and write_init_file () =
1477 match !init_file with
1478 | NoInitFile -> () (* Do nothing if --no-init-file *)
1479 | DefaultInitFile ->
1480 let home = try Sys.getenv "HOME" with Not_found -> "/" in
1481 let filename = home // rcfile in
1482 _write_init_file filename
1483 | InitFile filename ->
1484 _write_init_file filename
1486 and _write_init_file filename =
1488 (* Create the new file as filename.new. *)
1489 let chan = open_out (filename ^ ".new") in
1491 let time = Unix.gettimeofday () in
1492 let tm = Unix.localtime time in
1493 let printable_date_time =
1494 sprintf "%04d-%02d-%02d %02d:%02d:%02d"
1495 (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon+1) tm.Unix.tm_mday
1496 tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
1499 let uid = Unix.geteuid () in
1500 (Unix.getpwuid uid).Unix.pw_name
1502 Not_found -> "unknown" in
1505 let nl () = fp chan "\n" in
1506 let () = fp chan (f_ "# %s virt-top configuration file\n") rcfile in
1507 let () = fp chan (f_ "# generated on %s by %s\n") printable_date_time username in
1509 fp chan "display %s\n" (cli_of_display !display_mode);
1510 fp chan "delay %g\n" (float !delay /. 1000.);
1511 fp chan "hist-cpu %d\n" !historical_cpu_delay;
1512 if !iterations <> -1 then fp chan "iterations %d\n" !iterations;
1513 fp chan "sort %s\n" (cli_of_sort_order !sort_order);
1516 | Some uri -> fp chan "connect %s\n" uri
1518 if !batch_mode = true then fp chan "batch true\n";
1519 if !secure_mode = true then fp chan "secure true\n";
1521 output_string chan (s_ "# To send debug and error messages to a file, uncomment next line\n");
1522 fp chan "#debug virt-top.out\n";
1524 output_string chan (s_ "# Enable CSV output to the named file\n");
1525 fp chan "#csv virt-top.csv\n";
1527 output_string chan (s_ "# To protect this file from being overwritten, uncomment next line\n");
1528 fp chan "#overwrite-init-file false\n";
1532 (* If the file exists, rename it as filename.old. *)
1533 (try Unix.rename filename (filename ^ ".old")
1534 with Unix.Unix_error _ -> ());
1536 (* Rename filename.new to filename. *)
1537 Unix.rename (filename ^ ".new") filename;
1539 print_msg (sprintf (f_ "Wrote settings to %s") filename);
1540 ignore (refresh ());
1544 ignore (print_msg (s_ "Error" ^ ": " ^ err));
1545 ignore (refresh ()); sleep 2
1546 | Unix.Unix_error (err, fn, str) ->
1547 ignore (print_msg (s_ ("Error" ^ ": " ^ Unix.error_message err ^ fn ^ str)));
1548 ignore (refresh ());
1551 and show_help (_, _, _, _, _, hostname,
1552 (libvirt_major, libvirt_minor, libvirt_release)) =
1555 (* Get the screen/window size. *)
1556 let lines, cols = get_size () in
1558 (* Banner at the top of the screen. *)
1560 sprintf (f_ "virt-top %s ocaml-libvirt %s libvirt %d.%d.%d by Red Hat")
1561 Virt_top_version.version
1562 Libvirt_version.version
1563 libvirt_major libvirt_minor libvirt_release in
1564 let banner = pad cols banner in
1566 ignore (mvaddstr 0 0 banner);
1570 ignore (mvaddstr 1 0
1571 (sprintf (f_ "Delay: %.1f secs; Batch: %s; Secure: %s; Sort: %s")
1572 (float !delay /. 1000.)
1573 (if !batch_mode then "On" else "Off")
1574 (if !secure_mode then "On" else "Off")
1575 (printable_sort_order !sort_order)));
1576 ignore (mvaddstr 2 0
1577 (sprintf (f_ "Connect: %s; Hostname: %s")
1578 (match !uri with None -> "default" | Some s -> s)
1581 (* Misc keys on left. *)
1582 let banner = pad 38 (s_ "MAIN KEYS") in
1584 ignore (mvaddstr header_lineno 1 banner);
1588 let lineno = ref domains_lineno in
1589 fun () -> let i = !lineno in incr lineno; i
1591 let key keys description =
1592 let lineno = get_lineno () in
1593 ignore (move lineno 1); attron A.bold; ignore (addstr keys); attroff A.bold;
1594 ignore (move lineno 10); ignore (addstr description)
1596 key "space ^L" (s_ "Update display");
1597 key "q" (s_ "Quit");
1598 key "d s" (s_ "Set update interval");
1599 key "h" (s_ "Help");
1602 ignore (get_lineno ());
1603 let banner = pad 38 (s_ "SORTING") in
1605 ignore (mvaddstr (get_lineno ()) 1 banner);
1608 key "P" (s_ "Sort by %CPU");
1609 key "M" (s_ "Sort by %MEM");
1610 key "T" (s_ "Sort by TIME");
1611 key "N" (s_ "Sort by ID");
1612 key "F" (s_ "Select sort field");
1614 (* Display modes on right. *)
1615 let banner = pad 39 (s_ "DISPLAY MODES") in
1617 ignore (mvaddstr header_lineno 40 banner);
1621 let lineno = ref domains_lineno in
1622 fun () -> let i = !lineno in incr lineno; i
1624 let key keys description =
1625 let lineno = get_lineno () in
1626 ignore (move lineno 40); attron A.bold; ignore (addstr keys); attroff A.bold;
1627 ignore (move lineno 49); ignore (addstr description)
1629 key "0" (s_ "Domains display");
1630 key "1" (s_ "Toggle physical CPUs");
1631 key "2" (s_ "Toggle network interfaces");
1632 key "3" (s_ "Toggle block devices");
1634 (* Update screen and wait for key press. *)
1635 ignore (mvaddstr (lines-1) 0
1636 (s_ "More help in virt-top(1) man page. Press any key to return."));
1637 ignore (refresh ());
1640 and unknown_command k =
1641 print_msg (s_ "Unknown command - try 'h' for help");
1642 ignore (refresh ());