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
84 (sprintf (f_ "%s: sort order should be: %s")
85 str "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq")
86 let cli_of_sort_order = function
91 | DomainName -> "name"
94 | BlockRdRq -> "blockrdrq"
95 | BlockWrRq -> "blockwrrq"
97 (* Current major display mode: TaskDisplay is the normal display. *)
98 type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
100 let display_of_cli = function
101 | "task" -> TaskDisplay
102 | "pcpu" -> PCPUDisplay
103 | "block" -> BlockDisplay
104 | "net" -> NetDisplay
107 (sprintf (f_ "%s: display should be %s")
108 str "task|pcpu|block|net")
109 let cli_of_display = function
110 | TaskDisplay -> "task"
111 | PCPUDisplay -> "pcpu"
112 | BlockDisplay -> "block"
113 | NetDisplay -> "net"
116 type init_file = NoInitFile | DefaultInitFile | InitFile of string
120 let delay = ref 3000 (* milliseconds *)
121 let historical_cpu_delay = ref 20 (* secs *)
122 let iterations = ref (-1)
123 let end_time = ref None
124 let batch_mode = ref false
125 let secure_mode = ref false
126 let sort_order = ref Processor
127 let display_mode = ref TaskDisplay
129 let debug_file = ref ""
130 let csv_enabled = ref false
131 let csv_cpu = ref true
132 let csv_block = ref true
133 let csv_net = ref true
134 let init_file = ref DefaultInitFile
135 let script_mode = ref false
137 (* Tuple of never-changing data returned by start_up function. *)
139 Libvirt.ro C.t * bool * bool * bool * C.node_info * string *
142 (* Function to read command line arguments and go into curses mode. *)
144 (* Read command line arguments. *)
145 let rec set_delay newdelay =
146 if newdelay <= 0. then
147 failwith (s_ "-d: cannot set a negative delay");
148 delay := int_of_float (newdelay *. 1000.)
149 and set_uri = function "" -> uri := None | u -> uri := Some u
150 and set_sort order = sort_order := sort_order_of_cli order
151 and set_pcpu_mode () = display_mode := PCPUDisplay
152 and set_net_mode () = display_mode := NetDisplay
153 and set_block_mode () = display_mode := BlockDisplay
154 and set_csv filename =
155 (!csv_start) filename;
157 and no_init_file () = init_file := NoInitFile
158 and set_init_file filename = init_file := InitFile filename
159 and set_end_time time = end_time := Some ((!parse_date_time) time)
160 and display_version () =
161 printf "virt-top %s ocaml-libvirt %s\n"
162 Virt_top_version.version Libvirt_version.version;
165 let argspec = Arg.align [
166 "-1", Arg.Unit set_pcpu_mode,
167 " " ^ s_ "Start by displaying pCPUs (default: tasks)";
168 "-2", Arg.Unit set_net_mode,
169 " " ^ s_ "Start by displaying network interfaces";
170 "-3", Arg.Unit set_block_mode,
171 " " ^ s_ "Start by displaying block devices";
172 "-b", Arg.Set batch_mode,
173 " " ^ s_ "Batch mode";
174 "-c", Arg.String set_uri,
175 "uri " ^ s_ "Connect to URI (default: Xen)";
176 "--connect", Arg.String set_uri,
177 "uri " ^ s_ "Connect to URI (default: Xen)";
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-block", Arg.Clear csv_block,
183 " " ^ s_ "Disable block device stats in CSV";
184 "--no-csv-net", Arg.Clear csv_net,
185 " " ^ s_ "Disable net stats in CSV";
186 "-d", Arg.Float set_delay,
187 "delay " ^ s_ "Delay time interval (seconds)";
188 "--debug", Arg.Set_string debug_file,
189 "file " ^ s_ "Send debug messages to file";
190 "--end-time", Arg.String set_end_time,
191 "time " ^ s_ "Exit at given time";
192 "--hist-cpu", Arg.Set_int historical_cpu_delay,
193 "secs " ^ s_ "Historical CPU delay";
194 "--init-file", Arg.String set_init_file,
195 "file " ^ s_ "Set name of init file";
196 "--no-init-file", Arg.Unit no_init_file,
197 " " ^ s_ "Do not read init file";
198 "-n", Arg.Set_int iterations,
199 "iterations " ^ s_ "Number of iterations to run";
200 "-o", Arg.String set_sort,
201 "sort " ^ sprintf (f_ "Set sort order (%s)") "cpu|mem|time|id|name";
202 "-s", Arg.Set secure_mode,
203 " " ^ s_ "Secure (\"kiosk\") mode";
204 "--script", Arg.Set script_mode,
205 " " ^ s_ "Run from a script (no user interface)";
206 "--version", Arg.Unit display_version,
207 " " ^ s_ "Display version number and exit";
210 raise (Arg.Bad (sprintf (f_ "%s: unknown parameter") str)) in
211 let usage_msg = s_ "virt-top : a 'top'-like utility for virtualization
217 Arg.parse argspec anon_fun usage_msg;
219 (* Read the init file. *)
220 let try_to_read_init_file filename =
221 let config = read_config_file filename in
224 | _, "display", mode -> display_mode := display_of_cli mode
225 | _, "delay", secs -> set_delay (float_of_string secs)
226 | _, "hist-cpu", secs -> historical_cpu_delay := int_of_string secs
227 | _, "iterations", n -> iterations := int_of_string n
228 | _, "sort", order -> set_sort order
229 | _, "connect", uri -> set_uri uri
230 | _, "debug", filename -> debug_file := filename
231 | _, "csv", filename -> set_csv filename
232 | _, "csv-cpu", b -> csv_cpu := bool_of_string b
233 | _, "csv-block", b -> csv_block := bool_of_string b
234 | _, "csv-net", b -> csv_net := bool_of_string b
235 | _, "batch", b -> batch_mode := bool_of_string b
236 | _, "secure", b -> secure_mode := bool_of_string b
237 | _, "script", b -> script_mode := bool_of_string b
238 | _, "end-time", t -> set_end_time t
239 | _, "overwrite-init-file", "false" -> no_init_file ()
241 eprintf (f_ "%s:%d: configuration item ``%s'' ignored\n%!")
245 (match !init_file with
248 let home = try Sys.getenv "HOME" with Not_found -> "/" in
249 let filename = home // rcfile in
250 try_to_read_init_file filename
251 | InitFile filename ->
252 try_to_read_init_file filename
255 (* Connect to the hypervisor before going into curses mode, since
256 * this is the most likely thing to fail.
260 try C.connect_readonly ?name ()
262 Libvirt.Virterror err ->
263 prerr_endline (Libvirt.Virterror.to_string err);
264 (* If non-root and no explicit connection URI, print a warning. *)
265 if Unix.geteuid () <> 0 && name = None then (
266 print_endline (s_ "NB: If you want to monitor a local Xen hypervisor, you usually need to be root");
270 (* Get the node_info. This never changes, right? So we get it just once. *)
271 let node_info = C.get_node_info conn in
273 (* Hostname and libvirt library version also don't change. *)
275 try C.get_hostname conn
277 (* qemu:/// and other URIs didn't support virConnectGetHostname until
278 * libvirt 0.3.3. Before that they'd throw a virterror. *)
279 | Libvirt.Virterror _
280 | Libvirt.Not_supported "virConnectGetHostname" -> "unknown" in
282 let libvirt_version =
283 let v, _ = Libvirt.get_version () in
284 v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
286 (* Open debug file if specified.
287 * NB: Do this just before jumping into curses mode.
289 (match !debug_file with
290 | "" -> (* No debug file specified, send stderr to /dev/null unless
291 * we're in script mode.
293 if not !script_mode then (
294 let fd = Unix.openfile "/dev/null" [Unix.O_WRONLY] 0o644 in
295 Unix.dup2 fd Unix.stderr;
298 | filename -> (* Send stderr to the named file. *)
300 Unix.openfile filename [Unix.O_WRONLY;Unix.O_CREAT;Unix.O_TRUNC]
302 Unix.dup2 fd Unix.stderr;
306 (* Curses voodoo (see ncurses(3)). *)
307 if not !script_mode then (
312 let stdscr = stdscr () in
313 ignore (intrflush stdscr false);
314 ignore (keypad stdscr true);
318 (* This tuple of static information is called 'setup' in other parts
319 * of this program, and is passed to other functions such as redraw and
320 * main_loop. See virt_top_main.ml.
323 !batch_mode, !script_mode, !csv_enabled, (* immutable modes *)
324 node_info, hostname, libvirt_version (* info that doesn't change *)
327 (* Show a domain state (the 'S' column). *)
328 let show_state = function
329 | D.InfoNoState -> '?'
330 | D.InfoRunning -> 'R'
331 | D.InfoBlocked -> 'S'
332 | D.InfoPaused -> 'P'
333 | D.InfoShutdown -> 'D'
334 | D.InfoShutoff -> 'O'
335 | D.InfoCrashed -> 'X'
337 (* Sleep in seconds. *)
338 let sleep = Unix.sleep
340 (* Sleep in milliseconds. *)
342 ignore (Unix.select [] [] [] (float n /. 1000.))
344 (* The curses getstr/getnstr functions are just weird.
345 * This helper function also enables echo temporarily.
347 let get_string maxlen =
349 let str = String.create maxlen in
350 let ok = getstr str in (* Safe because binding calls getnstr. *)
354 (* Chop at first '\0'. *)
356 let i = String.index str '\000' in
359 Not_found -> str (* it is full maxlen bytes *)
364 let summary_lineno = 1 (* this takes 2 lines *)
365 let message_lineno = 3
366 let header_lineno = 4
367 let domains_lineno = 5
369 (* Print in the "message area". *)
370 let clear_msg () = ignore (move message_lineno 0); clrtoeol ()
371 let print_msg str = clear_msg (); ignore (mvaddstr message_lineno 0 str)
373 (* Intermediate "domain + stats" structure that we use to collect
374 * everything we know about a domain within the collect function.
376 type rd_domain = Inactive | Active of rd_active
378 rd_domid : int; (* Domain ID. *)
379 rd_dom : [`R] D.t; (* Domain object. *)
380 rd_info : D.info; (* Domain CPU info now. *)
381 rd_block_stats : (string * D.block_stats) list;
382 (* Domain block stats now. *)
383 rd_interface_stats : (string * D.interface_stats) list;
384 (* Domain net stats now. *)
385 rd_prev_info : D.info option; (* Domain CPU info previously. *)
386 rd_prev_block_stats : (string * D.block_stats) list;
387 (* Domain block stats prev. *)
388 rd_prev_interface_stats : (string * D.interface_stats) list;
389 (* Domain interface stats prev. *)
390 (* The following are since the last slice, or 0 if cannot be calculated: *)
391 rd_cpu_time : float; (* CPU time used in nanoseconds. *)
392 rd_percent_cpu : float; (* CPU time as percent of total. *)
393 (* The following are since the last slice, or None if cannot be calc'd: *)
394 rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
395 rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
396 rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
397 rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
401 let collect, clear_pcpu_display_data =
402 (* We cache the list of block devices and interfaces for each domain
403 * here, so we don't need to reparse the XML each time.
405 let devices = Hashtbl.create 13 in
407 (* Function to get the list of block devices, network interfaces for
408 * a particular domain. Get it from the devices cache, and if not
409 * there then parse the domain XML.
411 let get_devices id dom =
412 try Hashtbl.find devices id
414 let blkdevs, netifs = (!parse_device_xml) id dom in
415 Hashtbl.replace devices id (blkdevs, netifs);
419 (* We save the state of domains across redraws here, which allows us
420 * to deduce %CPU usage from the running total.
422 let last_info = Hashtbl.create 13 in
423 let last_time = ref (Unix.gettimeofday ()) in
425 (* Save vcpuinfo structures across redraws too (only for pCPU display). *)
426 let last_vcpu_info = Hashtbl.create 13 in
428 let clear_pcpu_display_data () =
429 (* Clear out vcpu_info used by PCPUDisplay display_mode
430 * when we switch back to TaskDisplay mode.
432 Hashtbl.clear last_vcpu_info
435 let collect (conn, _, _, _, node_info, _, _) =
436 (* Number of physical CPUs (some may be disabled). *)
437 let nr_pcpus = C.maxcpus_of_node_info node_info in
439 (* Get the current time. *)
440 let time = Unix.gettimeofday () in
441 let tm = Unix.localtime time in
443 sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
445 (* What's the total CPU time elapsed since we were last called? (ns) *)
446 let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
447 (* Avoid division by zero. *)
448 let total_cpu_per_pcpu =
449 if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
450 let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
452 (* Get the domains. Match up with their last_info (if any). *)
454 (* Active domains. *)
455 let n = C.num_of_domains conn in
457 if n > 0 then Array.to_list (C.list_domains conn n)
463 let dom = D.lookup_by_id conn id in
464 let name = D.get_name dom in
465 let blkdevs, netifs = get_devices id dom in
467 (* Get current CPU, block and network stats. *)
468 let info = D.get_info dom in
470 try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
472 | Libvirt.Not_supported "virDomainBlockStats"
473 | Libvirt.Virterror _ -> [] in
474 let interface_stats =
475 try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
477 | Libvirt.Not_supported "virDomainInterfaceStats"
478 | Libvirt.Virterror _ -> [] in
480 let prev_info, prev_block_stats, prev_interface_stats =
482 let prev_info, prev_block_stats, prev_interface_stats =
483 Hashtbl.find last_info id in
484 Some prev_info, prev_block_stats, prev_interface_stats
485 with Not_found -> None, [], [] in
488 rd_domid = id; rd_dom = dom; rd_info = info;
489 rd_block_stats = block_stats;
490 rd_interface_stats = interface_stats;
491 rd_prev_info = prev_info;
492 rd_prev_block_stats = prev_block_stats;
493 rd_prev_interface_stats = prev_interface_stats;
494 rd_cpu_time = 0.; rd_percent_cpu = 0.;
495 rd_block_rd_reqs = None; rd_block_wr_reqs = None;
496 rd_net_rx_bytes = None; rd_net_tx_bytes = None;
499 Libvirt.Virterror _ -> None (* ignore transient error *)
502 (* Inactive domains. *)
505 let n = C.num_of_defined_domains conn in
507 if n > 0 then Array.to_list (C.list_defined_domains conn n)
509 List.map (fun name -> name, Inactive) names
511 (* Ignore transient errors, in particular errors from
512 * num_of_defined_domains if it cannot contact xend.
514 | Libvirt.Virterror _ -> [] in
516 doms @ doms_inactive in
518 (* Calculate the CPU time (ns) and %CPU used by each domain. *)
522 (* We have previous CPU info from which to calculate it? *)
523 | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
525 Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
526 let percent_cpu = 100. *. cpu_time /. total_cpu in
528 rd_cpu_time = cpu_time;
529 rd_percent_cpu = percent_cpu } in
531 (* For all other domains we can't calculate it, so leave as 0 *)
535 (* Calculate the number of block device read/write requests across
536 * all block devices attached to a domain.
541 (* Do we have stats from the previous slice? *)
542 | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
544 let block_stats = rd.rd_block_stats in (* stats now *)
546 (* Add all the devices together. Throw away device names. *)
547 let prev_block_stats =
548 sum_block_stats (List.map snd prev_block_stats) in
550 sum_block_stats (List.map snd block_stats) in
552 (* Calculate increase in read & write requests. *)
554 block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
556 block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
559 rd_block_rd_reqs = Some read_reqs;
560 rd_block_wr_reqs = Some write_reqs } in
562 (* For all other domains we can't calculate it, so leave as None. *)
566 (* Calculate the same as above for network interfaces across
567 * all network interfaces attached to a domain.
572 (* Do we have stats from the previous slice? *)
573 | name, Active ({ rd_prev_interface_stats =
574 ((_::_) as prev_interface_stats) }
576 let interface_stats = rd.rd_interface_stats in (* stats now *)
578 (* Add all the devices together. Throw away device names. *)
579 let prev_interface_stats =
580 sum_interface_stats (List.map snd prev_interface_stats) in
581 let interface_stats =
582 sum_interface_stats (List.map snd interface_stats) in
584 (* Calculate increase in rx & tx bytes. *)
586 interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
588 interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
591 rd_net_rx_bytes = Some rx_bytes;
592 rd_net_tx_bytes = Some tx_bytes } in
594 (* For all other domains we can't calculate it, so leave as None. *)
598 (* Collect some extra information in PCPUDisplay display_mode. *)
600 if !display_mode = PCPUDisplay then (
601 (* Get the VCPU info and VCPU->PCPU mappings for active domains.
602 * Also cull some data we don't care about.
604 let doms = List.filter_map (
606 | (name, Active rd) ->
608 let domid = rd.rd_domid in
609 let maplen = C.cpumaplen nr_pcpus in
610 let maxinfo = rd.rd_info.D.nr_virt_cpu in
611 let nr_vcpus, vcpu_infos, cpumaps =
612 D.get_vcpus rd.rd_dom maxinfo maplen in
614 (* Got previous vcpu_infos for this domain? *)
615 let prev_vcpu_infos =
616 try Some (Hashtbl.find last_vcpu_info domid)
617 with Not_found -> None in
618 (* Update last_vcpu_info. *)
619 Hashtbl.replace last_vcpu_info domid vcpu_infos;
621 (match prev_vcpu_infos with
622 | Some prev_vcpu_infos
623 when Array.length prev_vcpu_infos = Array.length vcpu_infos ->
624 Some (domid, name, nr_vcpus, vcpu_infos, prev_vcpu_infos,
626 | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
629 Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
631 | (_, Inactive) -> None (* ignore inactive doms *)
633 let nr_doms = List.length doms in
635 (* Rearrange the data into a matrix. Major axis (down) is
636 * pCPUs. Minor axis (right) is domains. At each node we store:
637 * cpu_time (on this pCPU only, nanosecs),
638 * average? (if set, then cpu_time is an average because the
639 * vCPU is pinned to more than one pCPU)
640 * running? (if set, we were instantaneously running on this pCPU)
642 let empty_node = (0L, false, false) in
643 let pcpus = Array.make_matrix nr_pcpus nr_doms empty_node in
646 fun di (domid, name, nr_vcpus, vcpu_infos, prev_vcpu_infos,
648 (* Which pCPUs can this dom run on? *)
649 for v = 0 to nr_vcpus-1 do
650 let pcpu = vcpu_infos.(v).D.cpu in (* instantaneous pCPU *)
651 let nr_poss_pcpus = ref 0 in (* how many pcpus can it run on? *)
652 for p = 0 to nr_pcpus-1 do
653 (* vcpu v can reside on pcpu p *)
654 if C.cpu_usable cpumaps maplen v p then
657 let nr_poss_pcpus = Int64.of_int !nr_poss_pcpus in
658 for p = 0 to nr_pcpus-1 do
659 (* vcpu v can reside on pcpu p *)
660 if C.cpu_usable cpumaps maplen v p then
661 let vcpu_time_on_pcpu =
662 vcpu_infos.(v).D.vcpu_time
663 -^ prev_vcpu_infos.(v).D.vcpu_time in
664 let vcpu_time_on_pcpu =
665 vcpu_time_on_pcpu /^ nr_poss_pcpus in
667 (vcpu_time_on_pcpu, nr_poss_pcpus > 1L, p = pcpu)
672 (* Sum the CPU time used by each pCPU, for the %CPU column. *)
673 let pcpus_cpu_time = Array.map (
675 let cpu_time = ref 0L in
676 for di = 0 to Array.length row-1 do
677 let t, _, _ = row.(di) in
678 cpu_time := !cpu_time +^ t
680 Int64.to_float !cpu_time
683 Some (doms, pcpus, pcpus_cpu_time)
687 (* Calculate totals. *)
688 let totals = List.fold_left (
689 fun (count, running, blocked, paused, shutdown, shutoff,
690 crashed, active, inactive,
691 total_cpu_time, total_memory, total_domU_memory) ->
693 | (name, Active rd) ->
694 let test state orig =
695 if rd.rd_info.D.state = state then orig+1 else orig
697 let running = test D.InfoRunning running in
698 let blocked = test D.InfoBlocked blocked in
699 let paused = test D.InfoPaused paused in
700 let shutdown = test D.InfoShutdown shutdown in
701 let shutoff = test D.InfoShutoff shutoff in
702 let crashed = test D.InfoCrashed crashed in
704 let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
705 let total_memory = total_memory +^ rd.rd_info.D.memory in
706 let total_domU_memory = total_domU_memory +^
707 if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
709 (count+1, running, blocked, paused, shutdown, shutoff,
710 crashed, active+1, inactive,
711 total_cpu_time, total_memory, total_domU_memory)
713 | (name, Inactive) -> (* inactive domain *)
714 (count+1, running, blocked, paused, shutdown, shutoff,
715 crashed, active, inactive+1,
716 total_cpu_time, total_memory, total_domU_memory)
717 ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
719 (* Update last_time, last_info. *)
721 Hashtbl.clear last_info;
725 let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
726 Hashtbl.add last_info rd.rd_domid info
731 time, printable_time,
732 nr_pcpus, total_cpu, total_cpu_per_pcpu,
737 collect, clear_pcpu_display_data
739 (* Redraw the display. *)
741 (* Keep a historical list of %CPU usages. *)
742 let historical_cpu = ref [] in
743 let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
745 (_, _, _, _, node_info, _, _) (* setup *)
747 time, printable_time,
748 nr_pcpus, total_cpu, total_cpu_per_pcpu,
750 pcpu_display) (* state *) ->
753 (* Get the screen/window size. *)
754 let lines, cols = get_size () in
757 ignore (mvaddstr top_lineno 0 ("virt-top " ^ printable_time ^ " - "));
759 (* Basic node_info. *)
761 (sprintf "%s %d/%dCPU %dMHz %LdMB "
762 node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
763 (node_info.C.memory /^ 1024L)));
764 (* Save the cursor position for when we come to draw the
765 * historical CPU times (down in this function).
767 let stdscr = stdscr () in
768 let historical_cursor = getyx stdscr in
770 (match !display_mode with
771 | TaskDisplay -> (*---------- Showing domains ----------*)
772 (* Sort domains on current sort_order. *)
775 match !sort_order with
777 (fun _ -> 0) (* fallthrough to default name compare *)
780 | Active rd1, Active rd2 ->
781 compare rd2.rd_percent_cpu rd1.rd_percent_cpu
782 | Active _, Inactive -> -1
783 | Inactive, Active _ -> 1
784 | Inactive, Inactive -> 0)
787 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
788 compare info2.D.memory info1.D.memory
789 | Active _, Inactive -> -1
790 | Inactive, Active _ -> 1
791 | Inactive, Inactive -> 0)
794 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
795 compare info2.D.cpu_time info1.D.cpu_time
796 | Active _, Inactive -> -1
797 | Inactive, Active _ -> 1
798 | Inactive, Inactive -> 0)
801 | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
803 | Active _, Inactive -> -1
804 | Inactive, Active _ -> 1
805 | Inactive, Inactive -> 0)
808 | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
810 | Active _, Inactive -> -1
811 | Inactive, Active _ -> 1
812 | Inactive, Inactive -> 0)
815 | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
817 | Active _, Inactive -> -1
818 | Inactive, Active _ -> 1
819 | Inactive, Inactive -> 0)
822 | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
824 | Active _, Inactive -> -1
825 | Inactive, Active _ -> 1
826 | Inactive, Inactive -> 0)
829 | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
831 | Active _, Inactive -> -1
832 | Inactive, Active _ -> 1
833 | Inactive, Inactive -> 0)
835 let cmp (name1, dom1) (name2, dom2) =
836 let r = cmp (dom1, dom2) in
838 else compare name1 name2
840 List.sort ~cmp doms in
845 mvaddstr header_lineno 0
846 (pad cols " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"));
849 let rec loop lineno = function
851 | (name, Active rd) :: doms ->
852 if lineno < lines then (
853 let state = show_state rd.rd_info.D.state in
854 let rd_req = Show.int64_option rd.rd_block_rd_reqs in
855 let wr_req = Show.int64_option rd.rd_block_wr_reqs in
856 let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
857 let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
858 let percent_cpu = Show.percent rd.rd_percent_cpu in
860 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
861 let percent_mem = Int64.to_float percent_mem in
862 let percent_mem = Show.percent percent_mem in
863 let time = Show.time rd.rd_info.D.cpu_time in
865 let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
866 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
867 percent_cpu percent_mem time name in
868 let line = pad cols line in
869 ignore (mvaddstr lineno 0 line);
872 | (name, Inactive) :: doms -> (* inactive domain *)
873 if lineno < lines then (
878 let line = pad cols line in
879 ignore (mvaddstr lineno 0 line);
883 loop domains_lineno doms
885 | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
886 let doms, pcpus, pcpus_cpu_time =
887 match pcpu_display with
889 | None -> failwith "internal error: no pcpu_display data" in
891 (* Display the pCPUs. *)
895 fun (_, name, _, _, _, _, _) ->
896 let len = String.length name in
897 let width = max (len+1) 7 in
903 mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names)));
908 ignore (mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p));
909 let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
910 let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
911 ignore (addstr (Show.percent percent_cpu));
915 fun di (domid, name, _, _, _, _, _) ->
916 let t, is_average, is_running = pcpus.(p).(di) in
917 let len = String.length name in
918 let width = max (len+1) 7 in
922 let t = Int64.to_float t in
923 let percent = 100. *. t /. total_cpu_per_pcpu in
924 sprintf "%s%c%c " (Show.percent percent)
925 (if is_average then '=' else ' ')
926 (if is_running then '#' else ' ')
928 ignore (addstr (pad width str));
933 | NetDisplay -> (*---------- Showing network interfaces ----------*)
934 (* Only care about active domains. *)
935 let doms = List.filter_map (
937 | (name, Active rd) -> Some (name, rd)
938 | (_, Inactive) -> None
941 (* For each domain we have a list of network interfaces seen
942 * this slice, and seen in the previous slice, which we now
943 * match up to get a list of (domain, interface) for which
944 * we have current & previous knowledge. (And ignore the rest).
952 (* Have prev slice stats for this device? *)
954 List.assoc dev rd.rd_prev_interface_stats in
955 Some (dev, name, rd, stats, prev_stats)
956 with Not_found -> None
957 ) rd.rd_interface_stats
960 (* Finally we have a list of:
961 * device name, domain name, rd_* stuff, curr stats, prev stats.
963 let devs : (string * string * rd_active *
964 D.interface_stats * D.interface_stats) list =
967 (* Difference curr slice & prev slice. *)
968 let devs = List.map (
969 fun (dev, name, rd, curr, prev) ->
970 dev, name, rd, diff_interface_stats curr prev
973 (* Sort by current sort order, but map some of the standard
974 * sort orders into ones which makes sense here.
978 match !sort_order with
980 (fun _ -> 0) (* fallthrough to default name compare *)
982 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
984 | Processor | Memory | Time | BlockRdRq | BlockWrRq
985 (* fallthrough to RXBY comparison. *)
987 (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
990 (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
993 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
994 let r = cmp (stats1, rd1, stats2, rd2) in
996 else compare (dev1, name1) (dev2, name2)
998 List.sort ~cmp devs in
1000 (* Print the header for network devices. *)
1003 mvaddstr header_lineno 0
1004 (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE"));
1007 (* Print domains and devices. *)
1008 let rec loop lineno = function
1010 | (dev, name, rd, stats) :: devs ->
1011 if lineno < lines then (
1012 let state = show_state rd.rd_info.D.state in
1014 if stats.D.rx_bytes >= 0L
1015 then Show.int64 stats.D.rx_bytes
1018 if stats.D.tx_bytes >= 0L
1019 then Show.int64 stats.D.tx_bytes
1022 if stats.D.rx_packets >= 0L
1023 then Show.int64 stats.D.rx_packets
1026 if stats.D.tx_packets >= 0L
1027 then Show.int64 stats.D.tx_packets
1030 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1033 rx_packets tx_packets
1034 (pad 12 name) dev in
1035 let line = pad cols line in
1036 ignore (mvaddstr lineno 0 line);
1037 loop (lineno+1) devs
1040 loop domains_lineno devs
1042 | BlockDisplay -> (*---------- Showing block devices ----------*)
1043 (* Only care about active domains. *)
1044 let doms = List.filter_map (
1046 | (name, Active rd) -> Some (name, rd)
1047 | (_, Inactive) -> None
1050 (* For each domain we have a list of block devices seen
1051 * this slice, and seen in the previous slice, which we now
1052 * match up to get a list of (domain, device) for which
1053 * we have current & previous knowledge. (And ignore the rest).
1061 (* Have prev slice stats for this device? *)
1063 List.assoc dev rd.rd_prev_block_stats in
1064 Some (dev, name, rd, stats, prev_stats)
1065 with Not_found -> None
1069 (* Finally we have a list of:
1070 * device name, domain name, rd_* stuff, curr stats, prev stats.
1072 let devs : (string * string * rd_active *
1073 D.block_stats * D.block_stats) list =
1074 List.flatten devs in
1076 (* Difference curr slice & prev slice. *)
1077 let devs = List.map (
1078 fun (dev, name, rd, curr, prev) ->
1079 dev, name, rd, diff_block_stats curr prev
1082 (* Sort by current sort order, but map some of the standard
1083 * sort orders into ones which makes sense here.
1087 match !sort_order with
1089 (fun _ -> 0) (* fallthrough to default name compare *)
1091 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1093 | Processor | Memory | Time | NetRX | NetTX
1094 (* fallthrough to RDRQ comparison. *)
1096 (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
1099 (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
1102 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1103 let r = cmp (stats1, rd1, stats2, rd2) in
1105 else compare (dev1, name1) (dev2, name2)
1107 List.sort ~cmp devs in
1109 (* Print the header for block devices. *)
1112 mvaddstr header_lineno 0
1113 (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE"));
1116 (* Print domains and devices. *)
1117 let rec loop lineno = function
1119 | (dev, name, rd, stats) :: devs ->
1120 if lineno < lines then (
1121 let state = show_state rd.rd_info.D.state in
1123 if stats.D.rd_bytes >= 0L
1124 then Show.int64 stats.D.rd_bytes
1127 if stats.D.wr_bytes >= 0L
1128 then Show.int64 stats.D.wr_bytes
1131 if stats.D.rd_req >= 0L
1132 then Show.int64 stats.D.rd_req
1135 if stats.D.wr_req >= 0L
1136 then Show.int64 stats.D.wr_req
1139 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1143 (pad 12 name) dev in
1144 let line = pad cols line in
1145 ignore (mvaddstr lineno 0 line);
1146 loop (lineno+1) devs
1149 loop domains_lineno devs
1150 ); (* end of display_mode conditional section *)
1152 let (count, running, blocked, paused, shutdown, shutoff,
1153 crashed, active, inactive,
1154 total_cpu_time, total_memory, total_domU_memory) = totals in
1157 mvaddstr summary_lineno 0
1158 (sprintf (f_ "%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
1159 count active running blocked paused inactive shutdown shutoff
1162 (* Total %CPU used, and memory summary. *)
1163 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1165 mvaddstr (summary_lineno+1) 0
1166 (sprintf (f_ "CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
1167 percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L)));
1169 (* Time to grab another historical %CPU for the list? *)
1170 if time >= !historical_cpu_last_time +. float !historical_cpu_delay
1172 historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
1173 historical_cpu_last_time := time
1176 (* Display historical CPU time. *)
1178 let x, y = historical_cursor in (* Yes, it's a bug in ocaml-curses *)
1179 let maxwidth = cols - x in
1182 (List.map (sprintf "%2.1f%%") !historical_cpu) in
1183 let line = pad maxwidth line in
1184 ignore (mvaddstr y x line);
1187 (* Park cursor in message area, as with top. *)
1188 ignore (move message_lineno 0);
1189 ignore (refresh ()); (* Refresh the display. *)
1192 (* Write CSV header row. *)
1193 let write_csv_header () =
1195 [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
1196 "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
1197 "Shutoff"; "Crashed"; "Active"; "Inactive";
1199 "Total hardware memory (KB)";
1200 "Total memory (KB)"; "Total guest memory (KB)";
1201 "Total CPU time (ns)" ] @
1202 (* These fields are repeated for each domain: *)
1203 [ "Domain ID"; "Domain name"; ] @
1204 (if !csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
1205 (if !csv_block then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
1206 (if !csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
1209 (* Write summary data to CSV file. *)
1211 (_, _, _, _, node_info, hostname, _) (* setup *)
1214 nr_pcpus, total_cpu, _,
1218 (* The totals / summary fields. *)
1219 let (count, running, blocked, paused, shutdown, shutoff,
1220 crashed, active, inactive,
1221 total_cpu_time, total_memory, total_domU_memory) = totals in
1223 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1225 let summary_fields = [
1226 hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
1227 string_of_int count; string_of_int running; string_of_int blocked;
1228 string_of_int paused; string_of_int shutdown; string_of_int shutoff;
1229 string_of_int crashed; string_of_int active; string_of_int inactive;
1230 sprintf "%2.1f" percent_cpu;
1231 Int64.to_string node_info.C.memory;
1232 Int64.to_string total_memory; Int64.to_string total_domU_memory;
1233 Int64.to_string (Int64.of_float total_cpu_time)
1238 * Sort them by ID so that the list of relatively stable. Ignore
1241 let doms = List.filter_map (
1243 | _, Inactive -> None (* Ignore inactive domains. *)
1244 | name, Active rd -> Some (name, rd)
1246 let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
1247 compare rd_domid1 rd_domid2
1249 let doms = List.sort ~cmp doms in
1251 let string_of_int64_option = Option.map_default Int64.to_string "" in
1253 let domain_fields = List.map (
1254 fun (domname, rd) ->
1255 [ string_of_int rd.rd_domid; domname ] @
1257 string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
1259 (if !csv_block then [
1260 string_of_int64_option rd.rd_block_rd_reqs;
1261 string_of_int64_option rd.rd_block_wr_reqs;
1264 string_of_int64_option rd.rd_net_rx_bytes;
1265 string_of_int64_option rd.rd_net_tx_bytes;
1268 let domain_fields = List.flatten domain_fields in
1270 (!csv_write) (summary_fields @ domain_fields)
1273 let rec main_loop ((_, batch_mode, script_mode, csv_enabled, _, _, _)
1275 if csv_enabled then write_csv_header ();
1278 let state = collect setup in (* Collect stats. *)
1279 if not script_mode then redraw setup state; (* Redraw display. *)
1280 if csv_enabled then append_csv setup state; (* Update CSV file. *)
1282 (* Clear up unused virDomainPtr objects. *)
1285 (* Get next key. This does the sleep. *)
1286 if not batch_mode && not script_mode then
1287 get_key_press setup;
1289 (* Max iterations? *)
1290 if !iterations >= 0 then (
1292 if !iterations = 0 then quit := true
1296 (match !end_time with
1299 let (_, time, _, _, _, _, _, _) = state in
1300 let delay_secs = float !delay /. 1000. in
1301 if end_time <= time +. delay_secs then quit := true
1304 (* Batch mode or script mode. We didn't call get_key_press above, so
1305 * we didn't sleep. Sleep now, unless we are about to quit.
1307 if batch_mode || script_mode then
1312 and get_key_press setup =
1313 (* Read the next key, waiting up to !delay milliseconds. *)
1316 timeout (-1); (* Reset to blocking mode. *)
1318 if k >= 0 && k <> 32 (* ' ' *) && k <> 12 (* ^L *) && k <> Key.resize
1320 if k = Char.code 'q' then quit := true
1321 else if k = Char.code 'h' then show_help setup
1322 else if k = Char.code 's' || k = Char.code 'd' then change_delay ()
1323 else if k = Char.code 'M' then sort_order := Memory
1324 else if k = Char.code 'P' then sort_order := Processor
1325 else if k = Char.code 'T' then sort_order := Time
1326 else if k = Char.code 'N' then sort_order := DomainID
1327 else if k = Char.code 'F' then change_sort_order ()
1328 else if k = Char.code '0' then set_tasks_display ()
1329 else if k = Char.code '1' then toggle_pcpu_display ()
1330 else if k = Char.code '2' then toggle_net_display ()
1331 else if k = Char.code '3' then toggle_block_display ()
1332 else if k = Char.code 'W' then write_init_file ()
1333 else unknown_command k
1336 and change_delay () =
1338 (sprintf (f_ "Change delay from %.1f to: ") (float !delay /. 1000.));
1339 let str = get_string 16 in
1340 (* Try to parse the number. *)
1343 let newdelay = float_of_string str in
1344 if newdelay <= 0. then (
1345 print_msg (s_ "Delay must be > 0"); true
1347 delay := int_of_float (newdelay *. 1000.); false
1350 Failure "float_of_string" ->
1351 print_msg (s_ "Not a valid number"); true in
1352 ignore (refresh ());
1353 sleep (if error then 2 else 1)
1355 and change_sort_order () =
1357 let lines, cols = get_size () in
1359 ignore (mvaddstr top_lineno 0 (s_ "Set sort order for main display"));
1360 ignore (mvaddstr summary_lineno 0 (s_ "Type key or use up and down cursor keys."));
1363 ignore (mvaddstr header_lineno 0 (pad cols "KEY Sort field"));
1366 let accelerator_key = function
1367 | Memory -> "(key: M)"
1368 | Processor -> "(key: P)"
1369 | Time -> "(key: T)"
1370 | DomainID -> "(key: N)"
1371 | _ -> (* all others have to be changed from here *) ""
1374 let rec key_of_int = function
1375 | i when i < 10 -> Char.chr (i + Char.code '0')
1376 | i when i < 20 -> Char.chr (i + Char.code 'a')
1378 and int_of_key = function
1379 | k when k >= 0x30 && k <= 0x39 (* '0' - '9' *) -> k - 0x30
1380 | k when k >= 0x61 && k <= 0x7a (* 'a' - 'j' *) -> k - 0x61 + 10
1381 | k when k >= 0x41 && k <= 0x6a (* 'A' - 'J' *) -> k - 0x41 + 10
1385 (* Display possible sort fields. *)
1386 let selected_index = ref 0 in
1389 let selected = !sort_order = ord in
1390 if selected then selected_index := i;
1391 ignore (mvaddstr (domains_lineno+i) 0
1392 (sprintf " %c %s %s %s"
1393 (key_of_int i) (if selected then "*" else " ")
1394 (printable_sort_order ord)
1395 (accelerator_key ord)))
1398 ignore (move message_lineno 0);
1399 ignore (refresh ());
1401 if k >= 0 && k <> 32 && k <> Char.code 'q' && k <> 13 then (
1402 let new_order, loop =
1403 (* Redraw the display. *)
1404 if k = 12 (* ^L *) then None, true
1405 (* Make the UP and DOWN arrow keys do something useful. *)
1406 else if k = Key.up then (
1407 if !selected_index > 0 then
1408 Some (List.nth all_sort_fields (!selected_index-1)), true
1412 else if k = Key.down then (
1413 if !selected_index < List.length all_sort_fields - 1 then
1414 Some (List.nth all_sort_fields (!selected_index+1)), true
1418 (* Also understand the regular accelerator keys. *)
1419 else if k = Char.code 'M' then
1421 else if k = Char.code 'P' then
1422 Some Processor, false
1423 else if k = Char.code 'T' then
1425 else if k = Char.code 'N' then
1426 Some DomainID, false
1428 (* It's one of the KEYs. *)
1429 let i = int_of_key k in
1430 if i >= 0 && i < List.length all_sort_fields then
1431 Some (List.nth all_sort_fields i), false
1436 (match new_order with
1439 sort_order := new_order;
1440 print_msg (sprintf "Sort order changed to: %s"
1441 (printable_sort_order new_order));
1443 ignore (refresh ());
1448 if loop then change_sort_order ()
1451 (* Note: We need to clear_pcpu_display_data every time
1452 * we _leave_ PCPUDisplay mode.
1454 and set_tasks_display () = (* key 0 *)
1455 if !display_mode = PCPUDisplay then clear_pcpu_display_data ();
1456 display_mode := TaskDisplay
1458 and toggle_pcpu_display () = (* key 1 *)
1460 match !display_mode with
1461 | TaskDisplay | NetDisplay | BlockDisplay -> PCPUDisplay
1462 | PCPUDisplay -> clear_pcpu_display_data (); TaskDisplay
1464 and toggle_net_display () = (* key 2 *)
1466 match !display_mode with
1467 | PCPUDisplay -> clear_pcpu_display_data (); NetDisplay
1468 | TaskDisplay | BlockDisplay -> NetDisplay
1469 | NetDisplay -> TaskDisplay
1471 and toggle_block_display () = (* key 3 *)
1473 match !display_mode with
1474 | PCPUDisplay -> clear_pcpu_display_data (); BlockDisplay
1475 | TaskDisplay | NetDisplay -> BlockDisplay
1476 | BlockDisplay -> TaskDisplay
1478 (* Write an init file. *)
1479 and write_init_file () =
1480 match !init_file with
1481 | NoInitFile -> () (* Do nothing if --no-init-file *)
1482 | DefaultInitFile ->
1483 let home = try Sys.getenv "HOME" with Not_found -> "/" in
1484 let filename = home // rcfile in
1485 _write_init_file filename
1486 | InitFile filename ->
1487 _write_init_file filename
1489 and _write_init_file filename =
1491 (* Create the new file as filename.new. *)
1492 let chan = open_out (filename ^ ".new") in
1494 let time = Unix.gettimeofday () in
1495 let tm = Unix.localtime time in
1496 let printable_date_time =
1497 sprintf "%04d-%02d-%02d %02d:%02d:%02d"
1498 (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon+1) tm.Unix.tm_mday
1499 tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
1502 let uid = Unix.geteuid () in
1503 (Unix.getpwuid uid).Unix.pw_name
1505 Not_found -> "unknown" in
1508 let nl () = fp chan "\n" in
1509 let () = fp chan (f_ "# %s virt-top configuration file\n") rcfile in
1510 let () = fp chan (f_ "# generated on %s by %s\n") printable_date_time username in
1512 fp chan "display %s\n" (cli_of_display !display_mode);
1513 fp chan "delay %g\n" (float !delay /. 1000.);
1514 fp chan "hist-cpu %d\n" !historical_cpu_delay;
1515 if !iterations <> -1 then fp chan "iterations %d\n" !iterations;
1516 fp chan "sort %s\n" (cli_of_sort_order !sort_order);
1519 | Some uri -> fp chan "connect %s\n" uri
1521 if !batch_mode = true then fp chan "batch true\n";
1522 if !secure_mode = true then fp chan "secure true\n";
1524 output_string chan (s_ "# To send debug and error messages to a file, uncomment next line\n");
1525 fp chan "#debug virt-top.out\n";
1527 output_string chan (s_ "# Enable CSV output to the named file\n");
1528 fp chan "#csv virt-top.csv\n";
1530 output_string chan (s_ "# To protect this file from being overwritten, uncomment next line\n");
1531 fp chan "#overwrite-init-file false\n";
1535 (* If the file exists, rename it as filename.old. *)
1536 (try Unix.rename filename (filename ^ ".old")
1537 with Unix.Unix_error _ -> ());
1539 (* Rename filename.new to filename. *)
1540 Unix.rename (filename ^ ".new") filename;
1542 print_msg (sprintf (f_ "Wrote settings to %s") filename);
1543 ignore (refresh ());
1547 ignore (print_msg (s_ "Error" ^ ": " ^ err));
1548 ignore (refresh ()); sleep 2
1549 | Unix.Unix_error (err, fn, str) ->
1550 ignore (print_msg (s_ ("Error" ^ ": " ^ Unix.error_message err ^ fn ^ str)));
1551 ignore (refresh ());
1554 and show_help (_, _, _, _, _, hostname,
1555 (libvirt_major, libvirt_minor, libvirt_release)) =
1558 (* Get the screen/window size. *)
1559 let lines, cols = get_size () in
1561 (* Banner at the top of the screen. *)
1563 sprintf (f_ "virt-top %s ocaml-libvirt %s libvirt %d.%d.%d by Red Hat")
1564 Virt_top_version.version
1565 Libvirt_version.version
1566 libvirt_major libvirt_minor libvirt_release in
1567 let banner = pad cols banner in
1569 ignore (mvaddstr 0 0 banner);
1573 ignore (mvaddstr 1 0
1574 (sprintf (f_ "Delay: %.1f secs; Batch: %s; Secure: %s; Sort: %s")
1575 (float !delay /. 1000.)
1576 (if !batch_mode then "On" else "Off")
1577 (if !secure_mode then "On" else "Off")
1578 (printable_sort_order !sort_order)));
1579 ignore (mvaddstr 2 0
1580 (sprintf (f_ "Connect: %s; Hostname: %s")
1581 (match !uri with None -> "default" | Some s -> s)
1584 (* Misc keys on left. *)
1585 let banner = pad 38 (s_ "MAIN KEYS") in
1587 ignore (mvaddstr header_lineno 1 banner);
1591 let lineno = ref domains_lineno in
1592 fun () -> let i = !lineno in incr lineno; i
1594 let key keys description =
1595 let lineno = get_lineno () in
1596 ignore (move lineno 1); attron A.bold; ignore (addstr keys); attroff A.bold;
1597 ignore (move lineno 10); ignore (addstr description)
1599 key "space ^L" (s_ "Update display");
1600 key "q" (s_ "Quit");
1601 key "d s" (s_ "Set update interval");
1602 key "h" (s_ "Help");
1605 ignore (get_lineno ());
1606 let banner = pad 38 (s_ "SORTING") in
1608 ignore (mvaddstr (get_lineno ()) 1 banner);
1611 key "P" (s_ "Sort by %CPU");
1612 key "M" (s_ "Sort by %MEM");
1613 key "T" (s_ "Sort by TIME");
1614 key "N" (s_ "Sort by ID");
1615 key "F" (s_ "Select sort field");
1617 (* Display modes on right. *)
1618 let banner = pad 39 (s_ "DISPLAY MODES") in
1620 ignore (mvaddstr header_lineno 40 banner);
1624 let lineno = ref domains_lineno in
1625 fun () -> let i = !lineno in incr lineno; i
1627 let key keys description =
1628 let lineno = get_lineno () in
1629 ignore (move lineno 40); attron A.bold; ignore (addstr keys); attroff A.bold;
1630 ignore (move lineno 49); ignore (addstr description)
1632 key "0" (s_ "Domains display");
1633 key "1" (s_ "Toggle physical CPUs");
1634 key "2" (s_ "Toggle network interfaces");
1635 key "3" (s_ "Toggle block devices");
1637 (* Update screen and wait for key press. *)
1638 ignore (mvaddstr (lines-1) 0
1639 (s_ "More help in virt-top(1) man page. Press any key to return."));
1640 ignore (refresh ());
1643 and unknown_command k =
1644 print_msg (s_ "Unknown command - try 'h' for help");
1645 ignore (refresh ());