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 Opt_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 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)")
204 "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq";
205 "-s", Arg.Set secure_mode,
206 " " ^ s_"Secure (\"kiosk\") mode";
207 "--script", Arg.Set script_mode,
208 " " ^ s_"Run from a script (no user interface)";
209 "--stream", Arg.Set stream_mode,
210 " " ^ s_"dump output to stdout (no userinterface)";
211 "--block-in-bytes", Arg.Set block_in_bytes,
212 " " ^ s_"show block device load in bytes rather than reqs";
213 "--version", Arg.Unit display_version,
214 " " ^ s_"Display version number and exit";
217 raise (Arg.Bad (sprintf (f_"%s: unknown parameter") str)) in
218 let usage_msg = s_"virt-top : a 'top'-like utility for virtualization
224 Arg.parse argspec anon_fun usage_msg;
226 (* Read the init file. *)
227 let try_to_read_init_file filename =
228 let config = read_config_file filename in
229 (* Replacement functions that raise better errors when
230 * parsing the init file.
232 let int_of_string s =
234 with Invalid_argument _ ->
235 failwithf (f_"%s: could not parse '%s' in init file: expecting an integer")
237 let float_of_string s =
238 try float_of_string s
239 with Invalid_argument _ ->
240 failwithf (f_"%s: could not parse '%s' in init file: expecting a number")
242 let bool_of_string s =
244 with Invalid_argument _ ->
245 failwithf (f_"%s: could not parse '%s' in init file: expecting %s")
246 filename s "true|false" in
249 | _, "display", mode -> display_mode := display_of_cli mode
250 | _, "delay", secs -> set_delay (float_of_string secs)
251 | _, "hist-cpu", secs -> historical_cpu_delay := int_of_string secs
252 | _, "iterations", n -> iterations := int_of_string n
253 | _, "sort", order -> set_sort order
254 | _, "connect", uri -> set_uri uri
255 | _, "debug", filename -> debug_file := filename
256 | _, "csv", filename -> set_csv filename
257 | _, "csv-cpu", b -> csv_cpu := bool_of_string b
258 | _, "csv-mem", b -> csv_mem := bool_of_string b
259 | _, "csv-block", b -> csv_block := bool_of_string b
260 | _, "csv-net", b -> csv_net := bool_of_string b
261 | _, "batch", b -> batch_mode := bool_of_string b
262 | _, "secure", b -> secure_mode := bool_of_string b
263 | _, "script", b -> script_mode := bool_of_string b
264 | _, "stream", b -> stream_mode := bool_of_string b
265 | _, "block-in-bytes", b -> block_in_bytes := bool_of_string b
266 | _, "end-time", t -> set_end_time t
267 | _, "overwrite-init-file", "false" -> no_init_file ()
269 eprintf (f_"%s:%d: configuration item ``%s'' ignored\n%!")
273 (match !init_file with
276 let home = try Sys.getenv "HOME" with Not_found -> "/" in
277 let filename = home // rcfile in
278 try_to_read_init_file filename
279 | InitFile filename ->
280 try_to_read_init_file filename
283 (* Connect to the hypervisor before going into curses mode, since
284 * this is the most likely thing to fail.
288 try C.connect_readonly ?name ()
290 Libvirt.Virterror err ->
291 prerr_endline (Libvirt.Virterror.to_string err);
292 (* If non-root and no explicit connection URI, print a warning. *)
293 if Unix.geteuid () <> 0 && name = None then (
294 print_endline (s_"NB: If you want to monitor a local hypervisor, you usually need to be root");
298 (* Get the node_info. This never changes, right? So we get it just once. *)
299 let node_info = C.get_node_info conn in
301 (* Hostname and libvirt library version also don't change. *)
303 try C.get_hostname conn
305 (* qemu:/// and other URIs didn't support virConnectGetHostname until
306 * libvirt 0.3.3. Before that they'd throw a virterror. *)
307 | Libvirt.Virterror _
308 | Libvirt.Not_supported "virConnectGetHostname" -> "unknown" in
310 let libvirt_version =
311 let v, _ = Libvirt.get_version () in
312 v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
314 (* Open debug file if specified.
315 * NB: Do this just before jumping into curses mode.
317 (match !debug_file with
318 | "" -> (* No debug file specified, send stderr to /dev/null unless
319 * we're in script mode.
321 if not !script_mode && not !stream_mode then (
322 let fd = Unix.openfile "/dev/null" [Unix.O_WRONLY] 0o644 in
323 Unix.dup2 fd Unix.stderr;
326 | filename -> (* Send stderr to the named file. *)
328 Unix.openfile filename [Unix.O_WRONLY;Unix.O_CREAT;Unix.O_TRUNC]
330 Unix.dup2 fd Unix.stderr;
334 (* Curses voodoo (see ncurses(3)). *)
335 if not !script_mode && not !stream_mode then (
340 let stdscr = stdscr () in
341 ignore (intrflush stdscr false);
342 ignore (keypad stdscr true);
346 (* This tuple of static information is called 'setup' in other parts
347 * of this program, and is passed to other functions such as redraw and
348 * main_loop. See virt_top_main.ml.
351 !batch_mode, !script_mode, !csv_enabled, !stream_mode, (* immutable modes *)
352 node_info, hostname, libvirt_version (* info that doesn't change *)
355 (* Show a domain state (the 'S' column). *)
356 let show_state = function
357 | D.InfoNoState -> '?'
358 | D.InfoRunning -> 'R'
359 | D.InfoBlocked -> 'S'
360 | D.InfoPaused -> 'P'
361 | D.InfoShutdown -> 'D'
362 | D.InfoShutoff -> 'O'
363 | D.InfoCrashed -> 'X'
365 (* Sleep in seconds. *)
366 let sleep = Unix.sleep
368 (* Sleep in milliseconds. *)
370 ignore (Unix.select [] [] [] (float n /. 1000.))
372 (* The curses getstr/getnstr functions are just weird.
373 * This helper function also enables echo temporarily.
375 let get_string maxlen =
377 let str = String.create maxlen in
378 let ok = getstr str in (* Safe because binding calls getnstr. *)
382 (* Chop at first '\0'. *)
384 let i = String.index str '\000' in
387 Not_found -> str (* it is full maxlen bytes *)
392 let summary_lineno = 1 (* this takes 2 lines *)
393 let message_lineno = 3
394 let header_lineno = 4
395 let domains_lineno = 5
397 (* Easier to use versions of curses functions addstr, mvaddstr, etc. *)
398 let move y x = ignore (move y x)
399 let refresh () = ignore (refresh ())
400 let addch c = ignore (addch (int_of_char c))
401 let addstr s = ignore (addstr s)
402 let mvaddstr y x s = ignore (mvaddstr y x s)
404 (* Print in the "message area". *)
405 let clear_msg () = move message_lineno 0; clrtoeol ()
406 let print_msg str = clear_msg (); mvaddstr message_lineno 0 str
408 (* Intermediate "domain + stats" structure that we use to collect
409 * everything we know about a domain within the collect function.
411 type rd_domain = Inactive | Active of rd_active
413 rd_domid : int; (* Domain ID. *)
414 rd_dom : [`R] D.t; (* Domain object. *)
415 rd_info : D.info; (* Domain CPU info now. *)
416 rd_block_stats : (string * D.block_stats) list;
417 (* Domain block stats now. *)
418 rd_interface_stats : (string * D.interface_stats) list;
419 (* Domain net stats now. *)
420 rd_prev_info : D.info option; (* Domain CPU info previously. *)
421 rd_prev_block_stats : (string * D.block_stats) list;
422 (* Domain block stats prev. *)
423 rd_prev_interface_stats : (string * D.interface_stats) list;
424 (* Domain interface stats prev. *)
425 (* The following are since the last slice, or 0 if cannot be calculated: *)
426 rd_cpu_time : float; (* CPU time used in nanoseconds. *)
427 rd_percent_cpu : float; (* CPU time as percent of total. *)
428 rd_mem_bytes : int64; (* Memory usage in bytes *)
429 rd_mem_percent: int64; (* Memory usage as percent of total *)
430 (* The following are since the last slice, or None if cannot be calc'd: *)
431 rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
432 rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
433 rd_block_rd_bytes : int64 option; (* Number of bytes block device read *)
434 rd_block_wr_bytes : int64 option; (* Number of bytes block device write *)
435 (* _info fields includes the number considering --block_in_bytes option *)
436 rd_block_rd_info : int64 option; (* Block device read info for user *)
437 rd_block_wr_info : int64 option; (* Block device read info for user *)
439 rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
440 rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
444 let collect, clear_pcpu_display_data =
445 (* We cache the list of block devices and interfaces for each domain
446 * here, so we don't need to reparse the XML each time.
448 let devices = Hashtbl.create 13 in
450 (* Function to get the list of block devices, network interfaces for
451 * a particular domain. Get it from the devices cache, and if not
452 * there then parse the domain XML.
454 let get_devices id dom =
455 try Hashtbl.find devices id
457 let blkdevs, netifs = (!parse_device_xml) id dom in
458 Hashtbl.replace devices id (blkdevs, netifs);
462 (* We save the state of domains across redraws here, which allows us
463 * to deduce %CPU usage from the running total.
465 let last_info = Hashtbl.create 13 in
466 let last_time = ref (Unix.gettimeofday ()) in
468 (* Save pcpu_usages structures across redraws too (only for pCPU display). *)
469 let last_pcpu_usages = Hashtbl.create 13 in
471 let clear_pcpu_display_data () =
472 (* Clear out pcpu_usages used by PCPUDisplay display_mode
473 * when we switch back to TaskDisplay mode.
475 Hashtbl.clear last_pcpu_usages
478 let collect (conn, _, _, _, _, node_info, _, _) =
479 (* Number of physical CPUs (some may be disabled). *)
480 let nr_pcpus = C.maxcpus_of_node_info node_info in
482 (* Get the current time. *)
483 let time = Unix.gettimeofday () in
484 let tm = Unix.localtime time in
486 sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
488 (* What's the total CPU time elapsed since we were last called? (ns) *)
489 let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
490 (* Avoid division by zero. *)
491 let total_cpu_per_pcpu =
492 if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
493 let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
495 (* Get the domains. Match up with their last_info (if any). *)
497 (* Active domains. *)
498 let n = C.num_of_domains conn in
500 if n > 0 then Array.to_list (C.list_domains conn n)
506 let dom = D.lookup_by_id conn id in
507 let name = D.get_name dom in
508 let blkdevs, netifs = get_devices id dom in
510 (* Get current CPU, block and network stats. *)
511 let info = D.get_info dom in
513 try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
515 | Libvirt.Not_supported "virDomainBlockStats"
516 | Libvirt.Virterror _ -> [] in
517 let interface_stats =
518 try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
520 | Libvirt.Not_supported "virDomainInterfaceStats"
521 | Libvirt.Virterror _ -> [] in
523 let prev_info, prev_block_stats, prev_interface_stats =
525 let prev_info, prev_block_stats, prev_interface_stats =
526 Hashtbl.find last_info id in
527 Some prev_info, prev_block_stats, prev_interface_stats
528 with Not_found -> None, [], [] in
531 rd_domid = id; rd_dom = dom; rd_info = info;
532 rd_block_stats = block_stats;
533 rd_interface_stats = interface_stats;
534 rd_prev_info = prev_info;
535 rd_prev_block_stats = prev_block_stats;
536 rd_prev_interface_stats = prev_interface_stats;
537 rd_cpu_time = 0.; rd_percent_cpu = 0.;
538 rd_mem_bytes = 0L; rd_mem_percent = 0L;
539 rd_block_rd_reqs = None; rd_block_wr_reqs = None;
540 rd_block_rd_bytes = None; rd_block_wr_bytes = None;
541 rd_block_rd_info = None; rd_block_wr_info = None;
542 rd_net_rx_bytes = None; rd_net_tx_bytes = None;
545 Libvirt.Virterror _ -> None (* ignore transient error *)
548 (* Inactive domains. *)
551 let n = C.num_of_defined_domains conn in
553 if n > 0 then Array.to_list (C.list_defined_domains conn n)
555 List.map (fun name -> name, Inactive) names
557 (* Ignore transient errors, in particular errors from
558 * num_of_defined_domains if it cannot contact xend.
560 | Libvirt.Virterror _ -> [] in
562 doms @ doms_inactive in
564 (* Calculate the CPU time (ns) and %CPU used by each domain. *)
568 (* We have previous CPU info from which to calculate it? *)
569 | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
571 Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
572 let percent_cpu = 100. *. cpu_time /. total_cpu in
573 let mem_usage = rd.rd_info.D.memory in
575 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
577 rd_cpu_time = cpu_time;
578 rd_percent_cpu = percent_cpu;
579 rd_mem_bytes = mem_usage;
580 rd_mem_percent = mem_percent} in
582 (* For all other domains we can't calculate it, so leave as 0 *)
586 (* Calculate the number of block device read/write requests across
587 * all block devices attached to a domain.
592 (* Do we have stats from the previous slice? *)
593 | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
595 let block_stats = rd.rd_block_stats in (* stats now *)
597 (* Add all the devices together. Throw away device names. *)
598 let prev_block_stats =
599 sum_block_stats (List.map snd prev_block_stats) in
601 sum_block_stats (List.map snd block_stats) in
603 (* Calculate increase in read & write requests. *)
605 block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
607 block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
609 block_stats.D.rd_bytes -^ prev_block_stats.D.rd_bytes in
611 block_stats.D.wr_bytes -^ prev_block_stats.D.wr_bytes in
614 rd_block_rd_reqs = Some read_reqs;
615 rd_block_wr_reqs = Some write_reqs;
616 rd_block_rd_bytes = Some read_bytes;
617 rd_block_wr_bytes = Some write_bytes;
620 rd_block_rd_info = if !block_in_bytes then
621 rd.rd_block_rd_bytes else rd.rd_block_rd_reqs;
622 rd_block_wr_info = if !block_in_bytes then
623 rd.rd_block_wr_bytes else rd.rd_block_wr_reqs;
626 (* For all other domains we can't calculate it, so leave as None. *)
630 (* Calculate the same as above for network interfaces across
631 * all network interfaces attached to a domain.
636 (* Do we have stats from the previous slice? *)
637 | name, Active ({ rd_prev_interface_stats =
638 ((_::_) as prev_interface_stats) }
640 let interface_stats = rd.rd_interface_stats in (* stats now *)
642 (* Add all the devices together. Throw away device names. *)
643 let prev_interface_stats =
644 sum_interface_stats (List.map snd prev_interface_stats) in
645 let interface_stats =
646 sum_interface_stats (List.map snd interface_stats) in
648 (* Calculate increase in rx & tx bytes. *)
650 interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
652 interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
655 rd_net_rx_bytes = Some rx_bytes;
656 rd_net_tx_bytes = Some tx_bytes } in
658 (* For all other domains we can't calculate it, so leave as None. *)
662 (* Collect some extra information in PCPUDisplay display_mode. *)
664 if !display_mode = PCPUDisplay then (
665 (* Get the VCPU info and VCPU->PCPU mappings for active domains.
666 * Also cull some data we don't care about.
668 let doms = List.filter_map (
670 | (name, Active rd) ->
672 let domid = rd.rd_domid in
673 let maplen = C.cpumaplen nr_pcpus in
674 let cpu_stats = D.get_cpu_stats rd.rd_dom in
676 (* Note the terminology is confusing.
678 * In libvirt, cpu_time is the total time (hypervisor + vCPU).
679 * vcpu_time is the time only taken by the vCPU,
680 * excluding time taken inside the hypervisor.
682 * For each pCPU, libvirt may return either "cpu_time"
683 * or "vcpu_time" or neither or both. This function
684 * returns an array pair [|cpu_time, vcpu_time|];
685 * if either is missing it is returned as 0.
687 let find_cpu_usages params =
688 let rec find_uint64_field name = function
689 | (n, D.TypedFieldUInt64 usage) :: _ when n = name -> usage
690 | _ :: params -> find_uint64_field name params
693 [| find_uint64_field "cpu_time" params;
694 find_uint64_field "vcpu_time" params |]
697 let pcpu_usages = Array.map find_cpu_usages cpu_stats in
698 let maxinfo = rd.rd_info.D.nr_virt_cpu in
699 let nr_vcpus, vcpu_infos, cpumaps =
700 D.get_vcpus rd.rd_dom maxinfo maplen in
702 (* Got previous pcpu_usages for this domain? *)
703 let prev_pcpu_usages =
704 try Some (Hashtbl.find last_pcpu_usages domid)
705 with Not_found -> None in
706 (* Update last_pcpu_usages. *)
707 Hashtbl.replace last_pcpu_usages domid pcpu_usages;
709 (match prev_pcpu_usages with
710 | Some prev_pcpu_usages
711 when Array.length prev_pcpu_usages = Array.length pcpu_usages ->
712 Some (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
713 prev_pcpu_usages, cpumaps, maplen)
714 | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
717 Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
719 | (_, Inactive) -> None (* ignore inactive doms *)
721 let nr_doms = List.length doms in
723 (* Rearrange the data into a matrix. Major axis (down) is
724 * pCPUs. Minor axis (right) is domains. At each node we store:
725 * cpu_time hypervisor + domain (on this pCPU only, nanosecs),
726 * vcpu_time domain only (on this pCPU only, nanosecs).
728 let make_3d_array dimx dimy dimz e =
729 Array.init dimx (fun _ -> Array.make_matrix dimy dimz e)
731 let pcpus = make_3d_array nr_pcpus nr_doms 2 0L in
734 fun di (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
735 prev_pcpu_usages, cpumaps, maplen) ->
736 (* Which pCPUs can this dom run on? *)
737 for p = 0 to Array.length pcpu_usages - 1 do
738 pcpus.(p).(di).(0) <-
739 pcpu_usages.(p).(0) -^ prev_pcpu_usages.(p).(0);
740 pcpus.(p).(di).(1) <-
741 pcpu_usages.(p).(1) -^ prev_pcpu_usages.(p).(1)
745 (* Sum the total CPU time used by each pCPU, for the %CPU column. *)
746 let pcpus_cpu_time = Array.map (
748 let cpu_time = ref 0L in
749 for di = 0 to Array.length row-1 do
750 let t = row.(di).(0) in
751 cpu_time := !cpu_time +^ t
753 Int64.to_float !cpu_time
756 Some (doms, pcpus, pcpus_cpu_time)
760 (* Calculate totals. *)
761 let totals = List.fold_left (
762 fun (count, running, blocked, paused, shutdown, shutoff,
763 crashed, active, inactive,
764 total_cpu_time, total_memory, total_domU_memory) ->
766 | (name, Active rd) ->
767 let test state orig =
768 if rd.rd_info.D.state = state then orig+1 else orig
770 let running = test D.InfoRunning running in
771 let blocked = test D.InfoBlocked blocked in
772 let paused = test D.InfoPaused paused in
773 let shutdown = test D.InfoShutdown shutdown in
774 let shutoff = test D.InfoShutoff shutoff in
775 let crashed = test D.InfoCrashed crashed in
777 let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
778 let total_memory = total_memory +^ rd.rd_info.D.memory in
779 let total_domU_memory = total_domU_memory +^
780 if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
782 (count+1, running, blocked, paused, shutdown, shutoff,
783 crashed, active+1, inactive,
784 total_cpu_time, total_memory, total_domU_memory)
786 | (name, Inactive) -> (* inactive domain *)
787 (count+1, running, blocked, paused, shutdown, shutoff,
788 crashed, active, inactive+1,
789 total_cpu_time, total_memory, total_domU_memory)
790 ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
792 (* Update last_time, last_info. *)
794 Hashtbl.clear last_info;
798 let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
799 Hashtbl.add last_info rd.rd_domid info
804 time, printable_time,
805 nr_pcpus, total_cpu, total_cpu_per_pcpu,
810 collect, clear_pcpu_display_data
812 (* Redraw the display. *)
814 (* Keep a historical list of %CPU usages. *)
815 let historical_cpu = ref [] in
816 let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
818 (_, _, _, _, _, node_info, _, _) (* setup *)
820 time, printable_time,
821 nr_pcpus, total_cpu, total_cpu_per_pcpu,
823 pcpu_display) (* state *) ->
826 (* Get the screen/window size. *)
827 let lines, cols = get_size () in
830 mvaddstr top_lineno 0 (sprintf "virt-top %s - " printable_time);
832 (* Basic node_info. *)
834 (sprintf "%s %d/%dCPU %dMHz %LdMB "
835 node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
836 (node_info.C.memory /^ 1024L));
837 (* Save the cursor position for when we come to draw the
838 * historical CPU times (down in this function).
840 let stdscr = stdscr () in
841 let historical_cursor = getyx stdscr in
843 (match !display_mode with
844 | TaskDisplay -> (*---------- Showing domains ----------*)
845 (* Sort domains on current sort_order. *)
848 match !sort_order with
850 (fun _ -> 0) (* fallthrough to default name compare *)
853 | Active rd1, Active rd2 ->
854 compare rd2.rd_percent_cpu rd1.rd_percent_cpu
855 | Active _, Inactive -> -1
856 | Inactive, Active _ -> 1
857 | Inactive, Inactive -> 0)
860 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
861 compare info2.D.memory info1.D.memory
862 | Active _, Inactive -> -1
863 | Inactive, Active _ -> 1
864 | Inactive, Inactive -> 0)
867 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
868 compare info2.D.cpu_time info1.D.cpu_time
869 | Active _, Inactive -> -1
870 | Inactive, Active _ -> 1
871 | Inactive, Inactive -> 0)
874 | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
876 | Active _, Inactive -> -1
877 | Inactive, Active _ -> 1
878 | Inactive, Inactive -> 0)
881 | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
883 | Active _, Inactive -> -1
884 | Inactive, Active _ -> 1
885 | Inactive, Inactive -> 0)
888 | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
890 | Active _, Inactive -> -1
891 | Inactive, Active _ -> 1
892 | Inactive, Inactive -> 0)
895 | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
897 | Active _, Inactive -> -1
898 | Inactive, Active _ -> 1
899 | Inactive, Inactive -> 0)
902 | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
904 | Active _, Inactive -> -1
905 | Inactive, Active _ -> 1
906 | Inactive, Inactive -> 0)
908 let cmp (name1, dom1) (name2, dom2) =
909 let r = cmp (dom1, dom2) in
911 else compare name1 name2
913 List.sort ~cmp doms in
917 let header_string = if !block_in_bytes
918 then " ID S RDBY WRBY RXBY TXBY %CPU %MEM TIME NAME"
919 else " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"
921 mvaddstr header_lineno 0
922 (pad cols header_string);
925 let rec loop lineno = function
927 | (name, Active rd) :: doms ->
928 if lineno < lines then (
929 let state = show_state rd.rd_info.D.state in
930 let rd_req = Show.int64_option rd.rd_block_rd_info in
931 let wr_req = Show.int64_option rd.rd_block_wr_info in
932 let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
933 let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
934 let percent_cpu = Show.percent rd.rd_percent_cpu in
935 let percent_mem = Int64.to_float rd.rd_mem_percent in
936 let percent_mem = Show.percent percent_mem in
937 let time = Show.time rd.rd_info.D.cpu_time in
939 let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
940 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
941 percent_cpu percent_mem time name in
942 let line = pad cols line in
943 mvaddstr lineno 0 line;
946 | (name, Inactive) :: doms -> (* inactive domain *)
947 if lineno < lines then (
952 let line = pad cols line in
953 mvaddstr lineno 0 line;
957 loop domains_lineno doms
959 | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
960 let doms, pcpus, pcpus_cpu_time =
961 match pcpu_display with
963 | None -> failwith "internal error: no pcpu_display data" in
965 (* Display the pCPUs. *)
969 fun (_, name, _, _, _, _, _, _) ->
970 let len = String.length name in
971 let width = max (len+1) 12 in
976 mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names));
981 mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p);
982 let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
983 let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
984 addstr (Show.percent percent_cpu);
988 fun di (domid, name, _, _, _, _, _, _) ->
989 let t = pcpus.(p).(di).(0) in (* hypervisor + domain *)
990 let t_only = pcpus.(p).(di).(1) in (* domain only *)
991 let len = String.length name in
992 let width = max (len+1) 12 in
996 let t = Int64.to_float t in
997 let percent = 100. *. t /. total_cpu_per_pcpu in
1001 if t_only <= 0L then ""
1003 let t_only = Int64.to_float t_only in
1004 let percent = 100. *. t_only /. total_cpu_per_pcpu in
1005 Show.percent percent
1007 addstr (pad 5 str_t);
1008 addstr (pad 5 str_t_only);
1009 addstr (pad (width-10) " ");
1014 | NetDisplay -> (*---------- Showing network interfaces ----------*)
1015 (* Only care about active domains. *)
1016 let doms = List.filter_map (
1018 | (name, Active rd) -> Some (name, rd)
1019 | (_, Inactive) -> None
1022 (* For each domain we have a list of network interfaces seen
1023 * this slice, and seen in the previous slice, which we now
1024 * match up to get a list of (domain, interface) for which
1025 * we have current & previous knowledge. (And ignore the rest).
1033 (* Have prev slice stats for this device? *)
1035 List.assoc dev rd.rd_prev_interface_stats in
1036 Some (dev, name, rd, stats, prev_stats)
1037 with Not_found -> None
1038 ) rd.rd_interface_stats
1041 (* Finally we have a list of:
1042 * device name, domain name, rd_* stuff, curr stats, prev stats.
1044 let devs : (string * string * rd_active *
1045 D.interface_stats * D.interface_stats) list =
1046 List.flatten devs in
1048 (* Difference curr slice & prev slice. *)
1049 let devs = List.map (
1050 fun (dev, name, rd, curr, prev) ->
1051 dev, name, rd, diff_interface_stats curr prev
1054 (* Sort by current sort order, but map some of the standard
1055 * sort orders into ones which makes sense here.
1059 match !sort_order with
1061 (fun _ -> 0) (* fallthrough to default name compare *)
1063 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1065 | Processor | Memory | Time | BlockRdRq | BlockWrRq
1066 (* fallthrough to RXBY comparison. *)
1068 (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
1071 (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
1074 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1075 let r = cmp (stats1, rd1, stats2, rd2) in
1077 else compare (dev1, name1) (dev2, name2)
1079 List.sort ~cmp devs in
1081 (* Print the header for network devices. *)
1083 mvaddstr header_lineno 0
1084 (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE");
1087 (* Print domains and devices. *)
1088 let rec loop lineno = function
1090 | (dev, name, rd, stats) :: devs ->
1091 if lineno < lines then (
1092 let state = show_state rd.rd_info.D.state in
1094 if stats.D.rx_bytes >= 0L
1095 then Show.int64 stats.D.rx_bytes
1098 if stats.D.tx_bytes >= 0L
1099 then Show.int64 stats.D.tx_bytes
1102 if stats.D.rx_packets >= 0L
1103 then Show.int64 stats.D.rx_packets
1106 if stats.D.tx_packets >= 0L
1107 then Show.int64 stats.D.tx_packets
1110 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1113 rx_packets tx_packets
1114 (pad 12 name) dev in
1115 let line = pad cols line in
1116 mvaddstr lineno 0 line;
1117 loop (lineno+1) devs
1120 loop domains_lineno devs
1122 | BlockDisplay -> (*---------- Showing block devices ----------*)
1123 (* Only care about active domains. *)
1124 let doms = List.filter_map (
1126 | (name, Active rd) -> Some (name, rd)
1127 | (_, Inactive) -> None
1130 (* For each domain we have a list of block devices seen
1131 * this slice, and seen in the previous slice, which we now
1132 * match up to get a list of (domain, device) for which
1133 * we have current & previous knowledge. (And ignore the rest).
1141 (* Have prev slice stats for this device? *)
1143 List.assoc dev rd.rd_prev_block_stats in
1144 Some (dev, name, rd, stats, prev_stats)
1145 with Not_found -> None
1149 (* Finally we have a list of:
1150 * device name, domain name, rd_* stuff, curr stats, prev stats.
1152 let devs : (string * string * rd_active *
1153 D.block_stats * D.block_stats) list =
1154 List.flatten devs in
1156 (* Difference curr slice & prev slice. *)
1157 let devs = List.map (
1158 fun (dev, name, rd, curr, prev) ->
1159 dev, name, rd, diff_block_stats curr prev
1162 (* Sort by current sort order, but map some of the standard
1163 * sort orders into ones which makes sense here.
1167 match !sort_order with
1169 (fun _ -> 0) (* fallthrough to default name compare *)
1171 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1173 | Processor | Memory | Time | NetRX | NetTX
1174 (* fallthrough to RDRQ comparison. *)
1176 (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
1179 (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
1182 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1183 let r = cmp (stats1, rd1, stats2, rd2) in
1185 else compare (dev1, name1) (dev2, name2)
1187 List.sort ~cmp devs in
1189 (* Print the header for block devices. *)
1191 mvaddstr header_lineno 0
1192 (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE");
1195 (* Print domains and devices. *)
1196 let rec loop lineno = function
1198 | (dev, name, rd, stats) :: devs ->
1199 if lineno < lines then (
1200 let state = show_state rd.rd_info.D.state in
1202 if stats.D.rd_bytes >= 0L
1203 then Show.int64 stats.D.rd_bytes
1206 if stats.D.wr_bytes >= 0L
1207 then Show.int64 stats.D.wr_bytes
1210 if stats.D.rd_req >= 0L
1211 then Show.int64 stats.D.rd_req
1214 if stats.D.wr_req >= 0L
1215 then Show.int64 stats.D.wr_req
1218 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1222 (pad 12 name) dev in
1223 let line = pad cols line in
1224 mvaddstr lineno 0 line;
1225 loop (lineno+1) devs
1228 loop domains_lineno devs
1229 ); (* end of display_mode conditional section *)
1231 let (count, running, blocked, paused, shutdown, shutoff,
1232 crashed, active, inactive,
1233 total_cpu_time, total_memory, total_domU_memory) = totals in
1235 mvaddstr summary_lineno 0
1237 (f_"%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
1238 count active running blocked paused inactive shutdown shutoff crashed);
1240 (* Total %CPU used, and memory summary. *)
1241 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1242 mvaddstr (summary_lineno+1) 0
1244 (f_"CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
1245 percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L));
1247 (* Time to grab another historical %CPU for the list? *)
1248 if time >= !historical_cpu_last_time +. float !historical_cpu_delay
1250 historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
1251 historical_cpu_last_time := time
1254 (* Display historical CPU time. *)
1256 let y, x = historical_cursor in
1257 let maxwidth = cols - x in
1260 (List.map (sprintf "%2.1f%%") !historical_cpu) in
1261 let line = pad maxwidth line in
1265 move message_lineno 0; (* Park cursor in message area, as with top. *)
1266 refresh () (* Refresh the display. *)
1268 (* Write CSV header row. *)
1269 let write_csv_header () =
1271 [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
1272 "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
1273 "Shutoff"; "Crashed"; "Active"; "Inactive";
1275 "Total hardware memory (KB)";
1276 "Total memory (KB)"; "Total guest memory (KB)";
1277 "Total CPU time (ns)" ] @
1278 (* These fields are repeated for each domain: *)
1279 [ "Domain ID"; "Domain name"; ] @
1280 (if !csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
1281 (if !csv_mem then [ "Mem (bytes)"; "%Mem";] else []) @
1282 (if !csv_block && not !block_in_bytes
1283 then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
1284 (if !csv_block && !block_in_bytes
1285 then [ "Block RDBY"; "Block WRBY"; ] else []) @
1286 (if !csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
1289 (* Write summary data to CSV file. *)
1291 (_, _, _, _, _, node_info, hostname, _) (* setup *)
1294 nr_pcpus, total_cpu, _,
1298 (* The totals / summary fields. *)
1299 let (count, running, blocked, paused, shutdown, shutoff,
1300 crashed, active, inactive,
1301 total_cpu_time, total_memory, total_domU_memory) = totals in
1303 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1305 let summary_fields = [
1306 hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
1307 string_of_int count; string_of_int running; string_of_int blocked;
1308 string_of_int paused; string_of_int shutdown; string_of_int shutoff;
1309 string_of_int crashed; string_of_int active; string_of_int inactive;
1310 sprintf "%2.1f" percent_cpu;
1311 Int64.to_string node_info.C.memory;
1312 Int64.to_string total_memory; Int64.to_string total_domU_memory;
1313 Int64.to_string (Int64.of_float total_cpu_time)
1318 * Sort them by ID so that the list of relatively stable. Ignore
1321 let doms = List.filter_map (
1323 | _, Inactive -> None (* Ignore inactive domains. *)
1324 | name, Active rd -> Some (name, rd)
1326 let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
1327 compare rd_domid1 rd_domid2
1329 let doms = List.sort ~cmp doms in
1331 let string_of_int64_option = Option.map_default Int64.to_string "" in
1333 let domain_fields = List.map (
1334 fun (domname, rd) ->
1335 [ string_of_int rd.rd_domid; domname ] @
1337 string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
1340 Int64.to_string rd.rd_mem_bytes; Int64.to_string rd.rd_mem_percent
1342 (if !csv_block then [
1343 string_of_int64_option rd.rd_block_rd_info;
1344 string_of_int64_option rd.rd_block_wr_info;
1347 string_of_int64_option rd.rd_net_rx_bytes;
1348 string_of_int64_option rd.rd_net_tx_bytes;
1351 let domain_fields = List.flatten domain_fields in
1353 (!csv_write) (summary_fields @ domain_fields)
1356 (_, _, _, _, _, node_info, hostname, _) (* setup *)
1359 nr_pcpus, total_cpu, _,
1363 (* Header for this iteration *)
1364 printf "virt-top time %s Host %s %s %d/%dCPU %dMHz %LdMB \n"
1365 printable_time hostname node_info.C.model node_info.C.cpus nr_pcpus
1366 node_info.C.mhz (node_info.C.memory /^ 1024L);
1367 (* dump domain information one by one *)
1368 let rd, wr = if !block_in_bytes then "RDBY", "WRBY" else "RDRQ", "WRRQ"
1370 printf " ID S %s %s RXBY TXBY %%CPU %%MEM TIME NAME\n" rd wr;
1376 | Active {rd_domid = id1 }, Active {rd_domid = id2} ->
1378 | Active _, Inactive -> -1
1379 | Inactive, Active _ -> 1
1380 | Inactive, Inactive -> 0)
1382 let cmp (name1, dom1) (name2, dom2) = compare(dom1, dom2) in
1383 List.sort ~cmp doms in
1385 let dump_domain = fun name rd
1387 let state = show_state rd.rd_info.D.state in
1388 let rd_req = if rd.rd_block_rd_info = None then " 0"
1389 else Show.int64_option rd.rd_block_rd_info in
1390 let wr_req = if rd.rd_block_wr_info = None then " 0"
1391 else Show.int64_option rd.rd_block_wr_info in
1392 let rx_bytes = if rd.rd_net_rx_bytes = None then " 0"
1393 else Show.int64_option rd.rd_net_rx_bytes in
1394 let tx_bytes = if rd.rd_net_tx_bytes = None then " 0"
1395 else Show.int64_option rd.rd_net_tx_bytes in
1396 let percent_cpu = Show.percent rd.rd_percent_cpu in
1397 let percent_mem = Int64.to_float rd.rd_mem_percent in
1398 let percent_mem = Show.percent percent_mem in
1399 let time = Show.time rd.rd_info.D.cpu_time in
1400 printf "%5d %c %s %s %s %s %s %s %s %s\n"
1401 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
1402 percent_cpu percent_mem time name;
1407 | name, Active dom -> dump_domain name dom
1408 | name, Inactive -> ()
1413 let rec main_loop ((_, batch_mode, script_mode, csv_enabled, stream_mode, _, _, _)
1415 if csv_enabled then write_csv_header ();
1418 let state = collect setup in (* Collect stats. *)
1419 (* Redraw display. *)
1420 if not script_mode && not stream_mode then redraw setup state;
1421 if csv_enabled then append_csv setup state; (* Update CSV file. *)
1422 if stream_mode then dump_stdout setup state; (* dump to stdout *)
1424 (* Clear up unused virDomainPtr objects. *)
1427 (* Max iterations? *)
1428 if !iterations >= 0 then (
1430 if !iterations = 0 then quit := true
1433 (* End time? We might need to adjust the precise delay down if
1434 * the delay would be longer than the end time (RHBZ#637964). Note
1435 * 'delay' is in milliseconds.
1438 match !end_time with
1440 (* No --end-time option, so use the current delay. *)
1443 let (_, time, _, _, _, _, _, _) = state in
1444 let delay_secs = float !delay /. 1000. in
1445 if end_time <= time +. delay_secs then (
1447 let delay = int_of_float (1000. *. (end_time -. time)) in
1448 if delay >= 0 then delay else 0
1451 (*eprintf "adjusted delay = %d\n%!" delay;*)
1453 (* Get next key. This does the sleep. *)
1454 if not batch_mode && not script_mode && not stream_mode then
1455 get_key_press setup delay
1457 (* Batch mode, script mode, stream mode. We didn't call
1458 * get_key_press, so we didn't sleep. Sleep now, unless we are
1461 if not !quit || !end_time <> None then
1466 and get_key_press setup delay =
1467 (* Read the next key, waiting up to 'delay' milliseconds. *)
1470 timeout (-1); (* Reset to blocking mode. *)
1472 if k >= 0 && k <> 32 (* ' ' *) && k <> 12 (* ^L *) && k <> Key.resize
1474 if k = Char.code 'q' then quit := true
1475 else if k = Char.code 'h' then show_help setup
1476 else if k = Char.code 's' || k = Char.code 'd' then change_delay ()
1477 else if k = Char.code 'M' then sort_order := Memory
1478 else if k = Char.code 'P' then sort_order := Processor
1479 else if k = Char.code 'T' then sort_order := Time
1480 else if k = Char.code 'N' then sort_order := DomainID
1481 else if k = Char.code 'F' then change_sort_order ()
1482 else if k = Char.code '0' then set_tasks_display ()
1483 else if k = Char.code '1' then toggle_pcpu_display ()
1484 else if k = Char.code '2' then toggle_net_display ()
1485 else if k = Char.code '3' then toggle_block_display ()
1486 else if k = Char.code 'W' then write_init_file ()
1487 else if k = Char.code 'B' then toggle_block_in_bytes_mode ()
1488 else unknown_command k
1491 and change_delay () =
1493 (sprintf (f_"Change delay from %.1f to: ") (float !delay /. 1000.));
1494 let str = get_string 16 in
1495 (* Try to parse the number. *)
1498 let newdelay = float_of_string str in
1499 if newdelay <= 0. then (
1500 print_msg (s_"Delay must be > 0"); true
1502 delay := int_of_float (newdelay *. 1000.); false
1505 Failure "float_of_string" ->
1506 print_msg (s_"Not a valid number"); true in
1508 sleep (if error then 2 else 1)
1510 and change_sort_order () =
1512 let lines, cols = get_size () in
1514 mvaddstr top_lineno 0 (s_"Set sort order for main display");
1515 mvaddstr summary_lineno 0 (s_"Type key or use up and down cursor keys.");
1518 mvaddstr header_lineno 0 (pad cols "KEY Sort field");
1521 let accelerator_key = function
1522 | Memory -> "(key: M)"
1523 | Processor -> "(key: P)"
1524 | Time -> "(key: T)"
1525 | DomainID -> "(key: N)"
1526 | _ -> (* all others have to be changed from here *) ""
1529 let rec key_of_int = function
1530 | i when i < 10 -> Char.chr (i + Char.code '0')
1531 | i when i < 20 -> Char.chr (i + Char.code 'a')
1533 and int_of_key = function
1534 | k when k >= 0x30 && k <= 0x39 (* '0' - '9' *) -> k - 0x30
1535 | k when k >= 0x61 && k <= 0x7a (* 'a' - 'j' *) -> k - 0x61 + 10
1536 | k when k >= 0x41 && k <= 0x6a (* 'A' - 'J' *) -> k - 0x41 + 10
1540 (* Display possible sort fields. *)
1541 let selected_index = ref 0 in
1544 let selected = !sort_order = ord in
1545 if selected then selected_index := i;
1546 mvaddstr (domains_lineno+i) 0
1547 (sprintf " %c %s %s %s"
1548 (key_of_int i) (if selected then "*" else " ")
1549 (printable_sort_order ord)
1550 (accelerator_key ord))
1553 move message_lineno 0;
1556 if k >= 0 && k <> 32 && k <> Char.code 'q' && k <> 13 then (
1557 let new_order, loop =
1558 (* Redraw the display. *)
1559 if k = 12 (* ^L *) then None, true
1560 (* Make the UP and DOWN arrow keys do something useful. *)
1561 else if k = Key.up then (
1562 if !selected_index > 0 then
1563 Some (List.nth all_sort_fields (!selected_index-1)), true
1567 else if k = Key.down then (
1568 if !selected_index < List.length all_sort_fields - 1 then
1569 Some (List.nth all_sort_fields (!selected_index+1)), true
1573 (* Also understand the regular accelerator keys. *)
1574 else if k = Char.code 'M' then
1576 else if k = Char.code 'P' then
1577 Some Processor, false
1578 else if k = Char.code 'T' then
1580 else if k = Char.code 'N' then
1581 Some DomainID, false
1583 (* It's one of the KEYs. *)
1584 let i = int_of_key k in
1585 if i >= 0 && i < List.length all_sort_fields then
1586 Some (List.nth all_sort_fields i), false
1591 (match new_order with
1594 sort_order := new_order;
1595 print_msg (sprintf "Sort order changed to: %s"
1596 (printable_sort_order new_order));
1603 if loop then change_sort_order ()
1606 (* Note: We need to clear_pcpu_display_data every time
1607 * we _leave_ PCPUDisplay mode.
1609 and set_tasks_display () = (* key 0 *)
1610 if !display_mode = PCPUDisplay then clear_pcpu_display_data ();
1611 display_mode := TaskDisplay
1613 and toggle_pcpu_display () = (* key 1 *)
1615 match !display_mode with
1616 | TaskDisplay | NetDisplay | BlockDisplay -> PCPUDisplay
1617 | PCPUDisplay -> clear_pcpu_display_data (); TaskDisplay
1619 and toggle_net_display () = (* key 2 *)
1621 match !display_mode with
1622 | PCPUDisplay -> clear_pcpu_display_data (); NetDisplay
1623 | TaskDisplay | BlockDisplay -> NetDisplay
1624 | NetDisplay -> TaskDisplay
1626 and toggle_block_display () = (* key 3 *)
1628 match !display_mode with
1629 | PCPUDisplay -> clear_pcpu_display_data (); BlockDisplay
1630 | TaskDisplay | NetDisplay -> BlockDisplay
1631 | BlockDisplay -> TaskDisplay
1633 and toggle_block_in_bytes_mode () = (* key B *)
1635 match !block_in_bytes with
1639 (* Write an init file. *)
1640 and write_init_file () =
1641 match !init_file with
1642 | NoInitFile -> () (* Do nothing if --no-init-file *)
1643 | DefaultInitFile ->
1644 let home = try Sys.getenv "HOME" with Not_found -> "/" in
1645 let filename = home // rcfile in
1646 _write_init_file filename
1647 | InitFile filename ->
1648 _write_init_file filename
1650 and _write_init_file filename =
1652 (* Create the new file as filename.new. *)
1653 let chan = open_out (filename ^ ".new") in
1655 let time = Unix.gettimeofday () in
1656 let tm = Unix.localtime time in
1657 let printable_date_time =
1658 sprintf "%04d-%02d-%02d %02d:%02d:%02d"
1659 (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon+1) tm.Unix.tm_mday
1660 tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
1663 let uid = Unix.geteuid () in
1664 (Unix.getpwuid uid).Unix.pw_name
1666 Not_found -> "unknown" in
1669 let nl () = fp chan "\n" in
1670 let () = fp chan (f_"# %s virt-top configuration file\n") rcfile in
1671 let () = fp chan (f_"# generated on %s by %s\n") printable_date_time username in
1673 fp chan "display %s\n" (cli_of_display !display_mode);
1674 fp chan "delay %g\n" (float !delay /. 1000.);
1675 fp chan "hist-cpu %d\n" !historical_cpu_delay;
1676 if !iterations <> -1 then fp chan "iterations %d\n" !iterations;
1677 fp chan "sort %s\n" (cli_of_sort_order !sort_order);
1680 | Some uri -> fp chan "connect %s\n" uri
1682 if !batch_mode = true then fp chan "batch true\n";
1683 if !secure_mode = true then fp chan "secure true\n";
1685 output_string chan (s_"# To send debug and error messages to a file, uncomment next line\n");
1686 fp chan "#debug virt-top.out\n";
1688 output_string chan (s_"# Enable CSV output to the named file\n");
1689 fp chan "#csv virt-top.csv\n";
1691 output_string chan (s_"# To protect this file from being overwritten, uncomment next line\n");
1692 fp chan "#overwrite-init-file false\n";
1696 (* If the file exists, rename it as filename.old. *)
1697 (try Unix.rename filename (filename ^ ".old")
1698 with Unix.Unix_error _ -> ());
1700 (* Rename filename.new to filename. *)
1701 Unix.rename (filename ^ ".new") filename;
1703 print_msg (sprintf (f_"Wrote settings to %s") filename);
1708 print_msg (s_"Error" ^ ": " ^ err);
1710 | Unix.Unix_error (err, fn, str) ->
1711 print_msg (s_"Error" ^ ": " ^
1712 (Unix.error_message err) ^ " " ^ fn ^ " " ^ str);
1716 and show_help (_, _, _, _, _, _, hostname,
1717 (libvirt_major, libvirt_minor, libvirt_release)) =
1720 (* Get the screen/window size. *)
1721 let lines, cols = get_size () in
1723 (* Banner at the top of the screen. *)
1725 sprintf (f_"virt-top %s ocaml-libvirt %s libvirt %d.%d.%d by Red Hat")
1727 Libvirt_version.version
1728 libvirt_major libvirt_minor libvirt_release in
1729 let banner = pad cols banner in
1731 mvaddstr 0 0 banner;
1737 (f_"Delay: %.1f secs; Batch: %s; Secure: %s; Sort: %s")
1738 (float !delay /. 1000.)
1739 (if !batch_mode then s_"On" else s_"Off")
1740 (if !secure_mode then s_"On" else s_"Off")
1741 (printable_sort_order !sort_order));
1744 (f_"Connect: %s; Hostname: %s")
1745 (match !uri with None -> s_"default" | Some s -> s)
1748 (* Misc keys on left. *)
1749 let banner = pad 38 (s_"MAIN KEYS") in
1751 mvaddstr header_lineno 1 banner;
1755 let lineno = ref domains_lineno in
1756 fun () -> let i = !lineno in incr lineno; i
1758 let key keys description =
1759 let lineno = get_lineno () in
1760 move lineno 1; attron A.bold; addstr keys; attroff A.bold;
1761 move lineno 10; addstr description
1763 key "space ^L" (s_"Update display");
1765 key "d s" (s_"Set update interval");
1767 key "B" (s_"toggle block info req/bytes");
1770 ignore (get_lineno ());
1771 let banner = pad 38 (s_"SORTING") in
1773 mvaddstr (get_lineno ()) 1 banner;
1776 key "P" (s_"Sort by %CPU");
1777 key "M" (s_"Sort by %MEM");
1778 key "T" (s_"Sort by TIME");
1779 key "N" (s_"Sort by ID");
1780 key "F" (s_"Select sort field");
1782 (* Display modes on right. *)
1783 let banner = pad 39 (s_"DISPLAY MODES") in
1785 mvaddstr header_lineno 40 banner;
1789 let lineno = ref domains_lineno in
1790 fun () -> let i = !lineno in incr lineno; i
1792 let key keys description =
1793 let lineno = get_lineno () in
1794 move lineno 40; attron A.bold; addstr keys; attroff A.bold;
1795 move lineno 49; addstr description
1797 key "0" (s_"Domains display");
1798 key "1" (s_"Toggle physical CPUs");
1799 key "2" (s_"Toggle network interfaces");
1800 key "3" (s_"Toggle block devices");
1802 (* Update screen and wait for key press. *)
1803 mvaddstr (lines-1) 0
1804 (s_"More help in virt-top(1) man page. Press any key to return.");
1808 and unknown_command k =
1809 print_msg (s_"Unknown command - try 'h' for help");