1 (* 'top'-like tool for libvirt domains.
2 * $Id: virt_top.ml,v 1.5 2007/08/30 13:52:40 rjones Exp $
11 module C = Libvirt.Connect
12 module D = Libvirt.Domain
13 module N = Libvirt.Network
15 (* Hook for XML support (see virt_top_xml.ml). *)
16 let parse_device_xml : (int -> [>`R] D.t -> string list * string list) ref =
21 (* Hooks for CSV support (see virt_top_csv.ml). *)
22 let csv_start : (string -> unit) ref =
24 fun _ -> failwith "virt-top was compiled without support for CSV"
26 let csv_write : (string list -> unit) ref =
31 (* Int64 operators for convenience. *)
34 let ( *^ ) = Int64.mul
39 | DomainID | DomainName | Processor | Memory | Time
40 | NetRX | NetTX | BlockRdRq | BlockWrRq
41 let all_sort_fields = [
42 DomainID; DomainName; Processor; Memory; Time;
43 NetRX; NetTX; BlockRdRq; BlockWrRq
45 let printable_sort_order = function
48 | Time -> "TIME (CPU time)"
49 | DomainID -> "Domain ID"
50 | DomainName -> "Domain name"
51 | NetRX -> "Net RX bytes"
52 | NetTX -> "Net TX bytes"
53 | BlockRdRq -> "Block read reqs"
54 | BlockWrRq -> "Block write reqs"
55 let sort_order_of_cli = function
56 | "cpu" | "processor" -> Processor
57 | "mem" | "memory" -> Memory
60 | "name" -> DomainName
61 | "netrx" -> NetRX | "nettx" -> NetTX
62 | "blockrdrq" -> BlockRdRq | "blockwrrq" -> BlockWrRq
63 | str -> failwith (str ^ ": sort order should be: cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq")
64 let cli_of_sort_order = function
69 | DomainName -> "name"
72 | BlockRdRq -> "blockrdrq"
73 | BlockWrRq -> "blockwrrq"
75 (* Current major display mode: TaskDisplay is the normal display. *)
76 type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
78 let display_of_cli = function
79 | "task" -> TaskDisplay
80 | "pcpu" -> PCPUDisplay
81 | "block" -> BlockDisplay
83 | str -> failwith (str ^ ": display should be task|pcpu|block|net")
84 let cli_of_display = function
85 | TaskDisplay -> "task"
86 | PCPUDisplay -> "pcpu"
87 | BlockDisplay -> "block"
91 type init_file = NoInitFile | DefaultInitFile | InitFile of string
95 let delay = ref 3000 (* milliseconds *)
96 let historical_cpu_delay = ref 20 (* secs *)
97 let iterations = ref (-1)
98 let batch_mode = ref false
99 let secure_mode = ref false
100 let sort_order = ref Processor
101 let display_mode = ref TaskDisplay
103 let debug_file = ref ""
104 let csv_enabled = ref false
105 let init_file = ref DefaultInitFile
107 (* Function to read command line arguments and go into curses mode. *)
109 (* Read command line arguments. *)
110 let rec set_delay newdelay =
111 if newdelay <= 0. then
112 failwith "-d: cannot set a negative delay";
113 delay := int_of_float (newdelay *. 1000.)
114 and set_uri = function "" -> uri := None | u -> uri := Some u
115 and set_sort order = sort_order := sort_order_of_cli order
116 and set_pcpu_mode () = display_mode := PCPUDisplay
117 and set_net_mode () = display_mode := NetDisplay
118 and set_block_mode () = display_mode := BlockDisplay
119 and set_csv filename =
120 (!csv_start) filename;
122 and no_init_file () = init_file := NoInitFile
123 and set_init_file filename = init_file := InitFile filename
125 let argspec = Arg.align [
126 "-1", Arg.Unit set_pcpu_mode, " Start by displaying pCPUs (default: tasks)";
127 "-2", Arg.Unit set_net_mode, " Start by displaying network interfaces";
128 "-3", Arg.Unit set_block_mode, " Start by displaying block devices";
129 "-b", Arg.Set batch_mode, " Batch mode";
130 "-c", Arg.String set_uri, "uri Connect to URI (default: Xen)";
131 "--connect", Arg.String set_uri, "uri Connect to URI (default: Xen)";
132 "--csv", Arg.String set_csv, "file Log statistics to CSV file";
133 "-d", Arg.Float set_delay, "delay Delay time interval (seconds)";
134 "--debug", Arg.Set_string debug_file, "file Send debug messages to file";
135 "--hist-cpu", Arg.Set_int historical_cpu_delay, "secs Historical CPU delay";
136 "--init-file", Arg.String set_init_file, "file Set name of init file";
137 "--no-init-file", Arg.Unit no_init_file, " Do not read init file";
138 "-n", Arg.Set_int iterations, "iterations Number of iterations to run";
139 "-o", Arg.String set_sort, "sort Set sort order (cpu|mem|time|id|name)";
140 "-s", Arg.Set secure_mode, " Secure (\"kiosk\") mode";
142 let anon_fun str = raise (Arg.Bad (str ^ ": unknown parameter")) in
143 let usage_msg = "virt-top : a 'top'-like utility for virtualization
149 Arg.parse argspec anon_fun usage_msg;
151 (* Read the init file. *)
152 let try_to_read_init_file filename =
153 let config = read_config_file filename in
156 | _, "display", mode -> display_mode := display_of_cli mode
157 | _, "delay", secs -> set_delay (float_of_string secs)
158 | _, "hist-cpu", secs -> historical_cpu_delay := int_of_string secs
159 | _, "iterations", n -> iterations := int_of_string n
160 | _, "sort", order -> set_sort order
161 | _, "connect", uri -> set_uri uri
162 | _, "debug", filename -> debug_file := filename
163 | _, "csv", filename -> set_csv filename
164 | _, "batch", b -> batch_mode := bool_of_string b
165 | _, "secure", b -> secure_mode := bool_of_string b
166 | _, "overwrite-init-file", "false" -> no_init_file ()
168 eprintf "%s:%d: configuration item ``%s'' ignored\n%!"
172 (match !init_file with
175 let home = try Sys.getenv "HOME" with Not_found -> "/" in
176 let filename = home // ".virt-toprc" in
177 try_to_read_init_file filename
178 | InitFile filename ->
179 try_to_read_init_file filename
182 (* Connect to the hypervisor before going into curses mode, since
183 * this is the most likely thing to fail.
187 try C.connect_readonly ?name ()
189 Libvirt.Virterror err ->
190 prerr_endline (Libvirt.Virterror.to_string err);
191 (* If non-root and no explicit connection URI, print a warning. *)
192 if Unix.geteuid () <> 0 && name = None then (
193 print_endline "NB: If you want to monitor a local Xen hypervisor, you usually need to be root";
197 (* Get the node_info. This never changes, right? So we get it just once. *)
198 let node_info = C.get_node_info conn in
200 (* Hostname and libvirt library version also don't change. *)
202 try C.get_hostname conn
204 (* qemu:/// and other URIs didn't support virConnectGetHostname until
205 * libvirt 0.3.3. Before that they'd throw a virterror. *)
206 | Libvirt.Virterror _
207 | Invalid_argument "virConnectGetHostname not supported" -> "unknown" in
209 let libvirt_version =
210 let v, _ = Libvirt.get_version () in
211 v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
213 (* Open debug file if specified.
214 * NB: Do this just before jumping into curses mode.
216 (match !debug_file with
217 | "" -> (* No debug file specified, send stderr to /dev/null. *)
219 let fd = Unix.openfile "/dev/null" [Unix.O_WRONLY] 0o644 in
220 Unix.dup2 fd Unix.stderr;
223 Unix.Unix_error _ -> ()
225 | filename -> (* Send stderr to the named file. *)
227 Unix.openfile filename [Unix.O_WRONLY;Unix.O_CREAT;Unix.O_TRUNC]
229 Unix.dup2 fd Unix.stderr;
233 (* Curses voodoo (see ncurses(3)). *)
239 let stdscr = stdscr () in
240 intrflush stdscr false;
244 (* This tuple of static information is called 'state' in other parts
245 * of this program, and is passed to other functions such as redraw and
246 * main_loop. See virt_top_main.ml. It's not really "state" though.
248 conn, stdscr, node_info, hostname, libvirt_version
250 (* Show a percentage in 4 chars. *)
251 let show_percent percent =
252 if percent <= 0. then " 0.0"
253 else if percent <= 9.9 then sprintf " %1.1f" percent
254 else if percent <= 99.9 then sprintf "%2.1f" percent
257 (* Show an int64 option in 4 chars. *)
258 let rec show_int64_option = function
260 | Some n -> show_int64 n
261 (* Show an int64 in 4 chars. *)
262 and show_int64 = function
263 | n when n < 0L -> "-!!!"
264 | n when n <= 9999L ->
266 | n when n /^ 1024L <= 999L ->
267 sprintf "%3LdK" (n /^ 1024L)
268 | n when n /^ 1_048_576L <= 999L ->
269 sprintf "%3LdM" (n /^ 1_048_576L)
270 | n when n /^ 1_073_741_824L <= 999L ->
271 sprintf "%3LdG" (n /^ 1_073_741_824L)
274 (* Format the total time (may be large!) in 9 chars. *)
276 let secs_in_ns = 1_000_000_000L in
277 let mins_in_ns = 60_000_000_000L in
278 let hours_in_ns = 3_600_000_000_000L in
280 let hours = ns /^ hours_in_ns in
281 let ns = ns -^ (hours *^ hours_in_ns) in
282 let mins = ns /^ mins_in_ns in
283 let ns = ns -^ (mins *^ mins_in_ns) in
284 let secs = ns /^ secs_in_ns in
285 let ns = ns -^ (secs *^ secs_in_ns) in
286 let pennies = ns /^ 10_000_000L in
289 sprintf "%3Ld:%02Ld.%02Ld" (hours *^ 60L +^ mins) secs pennies
290 else if hours <= 999L then
291 sprintf "%3Ld:%02Ld:%02Ld" hours mins secs
293 let days = hours /^ 24L in
294 let hours = hours -^ (days *^ 24L) in
295 sprintf "%3Ldd%02Ld:%02Ld" days hours mins
298 (* Show a domain state (the 'S' column). *)
299 let show_state = function
300 | D.InfoNoState -> '?'
301 | D.InfoRunning -> 'R'
302 | D.InfoBlocked -> 'S'
303 | D.InfoPaused -> 'P'
304 | D.InfoShutdown -> 'D'
305 | D.InfoShutoff -> 'O'
306 | D.InfoCrashed -> 'X'
308 (* Sum Domain.block_stats structures together. Missing fields
309 * get forced to 0. Empty list returns all 0.
311 let zero_block_stats =
312 { D.rd_req = 0L; rd_bytes = 0L; wr_req = 0L; wr_bytes = 0L; errs = 0L }
313 let add_block_stats bs1 bs2 =
314 let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in
315 { D.rd_req = add bs1.D.rd_req bs2.D.rd_req;
316 rd_bytes = add bs1.D.rd_bytes bs2.D.rd_bytes;
317 wr_req = add bs1.D.wr_req bs2.D.wr_req;
318 wr_bytes = add bs1.D.wr_bytes bs2.D.wr_bytes;
319 errs = add bs1.D.errs bs2.D.errs }
320 let sum_block_stats =
321 List.fold_left add_block_stats zero_block_stats
323 (* Get the difference between two block_stats structures. Missing data
324 * forces the difference to -1.
326 let diff_block_stats curr prev =
327 let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in
328 { D.rd_req = sub curr.D.rd_req prev.D.rd_req;
329 rd_bytes = sub curr.D.rd_bytes prev.D.rd_bytes;
330 wr_req = sub curr.D.wr_req prev.D.wr_req;
331 wr_bytes = sub curr.D.wr_bytes prev.D.wr_bytes;
332 errs = sub curr.D.errs prev.D.errs }
334 (* Sum Domain.interface_stats structures together. Missing fields
335 * get forced to 0. Empty list returns all 0.
337 let zero_interface_stats =
338 { D.rx_bytes = 0L; rx_packets = 0L; rx_errs = 0L; rx_drop = 0L;
339 tx_bytes = 0L; tx_packets = 0L; tx_errs = 0L; tx_drop = 0L }
340 let add_interface_stats is1 is2 =
341 let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in
342 { D.rx_bytes = add is1.D.rx_bytes is2.D.rx_bytes;
343 rx_packets = add is1.D.rx_packets is2.D.rx_packets;
344 rx_errs = add is1.D.rx_errs is2.D.rx_errs;
345 rx_drop = add is1.D.rx_drop is2.D.rx_drop;
346 tx_bytes = add is1.D.tx_bytes is2.D.tx_bytes;
347 tx_packets = add is1.D.tx_packets is2.D.tx_packets;
348 tx_errs = add is1.D.tx_errs is2.D.tx_errs;
349 tx_drop = add is1.D.tx_drop is2.D.tx_drop }
350 let sum_interface_stats =
351 List.fold_left add_interface_stats zero_interface_stats
353 (* Get the difference between two interface_stats structures.
354 * Missing data forces the difference to -1.
356 let diff_interface_stats curr prev =
357 let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in
358 { D.rx_bytes = sub curr.D.rx_bytes prev.D.rx_bytes;
359 rx_packets = sub curr.D.rx_packets prev.D.rx_packets;
360 rx_errs = sub curr.D.rx_errs prev.D.rx_errs;
361 rx_drop = sub curr.D.rx_drop prev.D.rx_drop;
362 tx_bytes = sub curr.D.tx_bytes prev.D.tx_bytes;
363 tx_packets = sub curr.D.tx_packets prev.D.tx_packets;
364 tx_errs = sub curr.D.tx_errs prev.D.tx_errs;
365 tx_drop = sub curr.D.tx_drop prev.D.tx_drop }
367 (* Update the display and sleep for given number of seconds. *)
368 let sleep n = refresh (); Unix.sleep n
370 (* The curses getstr/getnstr functions are just weird.
371 * This helper function also enables echo temporarily.
373 let get_string maxlen =
375 let str = String.create maxlen in
376 let ok = getstr str in (* Safe because binding calls getnstr. *)
380 (* Chop at first '\0'. *)
382 let i = String.index str '\000' in
385 Not_found -> str (* it is full maxlen bytes *)
388 (* Pad a string to the full width with spaces. If too long, truncate. *)
390 let n = String.length str in
391 if n = width then str
392 else if n > width then String.sub str 0 width
393 else (* if n < width then *) str ^ String.make (width-n) ' '
397 let summary_lineno = 1 (* this takes 2 lines *)
398 let message_lineno = 3
399 let header_lineno = 4
400 let domains_lineno = 5
402 (* Print in the "message area". *)
403 let clear_msg () = move message_lineno 0; clrtoeol ()
404 let print_msg str = clear_msg (); mvaddstr message_lineno 0 str; ()
406 (* Write CSV header row. *)
407 let write_csv_header () =
408 (!csv_write) [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
409 "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
410 "Shutoff"; "Crashed"; "Active"; "Inactive";
411 "%CPU"; "Total memory KB"; "Total guest memory KB";
412 "Total CPU time ns" ]
414 (* Intermediate "domain + stats" structure that we use to collect
415 * everything we know about a domain within the redraw function.
417 type rd_domain = Inactive | Active of rd_active
419 rd_domid : int; (* Domain ID. *)
420 rd_dom : [`R] D.t; (* Domain object. *)
421 rd_info : D.info; (* Domain CPU info now. *)
422 rd_block_stats : (string * D.block_stats) list;
423 (* Domain block stats now. *)
424 rd_interface_stats : (string * D.interface_stats) list;
425 (* Domain net stats now. *)
426 rd_prev_info : D.info option; (* Domain CPU info previously. *)
427 rd_prev_block_stats : (string * D.block_stats) list;
428 (* Domain block stats prev. *)
429 rd_prev_interface_stats : (string * D.interface_stats) list;
430 (* Domain interface stats prev. *)
431 (* The following are since the last slice, or 0 if cannot be calculated: *)
432 rd_cpu_time : float; (* CPU time used in nanoseconds. *)
433 rd_percent_cpu : float; (* CPU time as percent of total. *)
434 (* The following are since the last slice, or None if cannot be calc'd: *)
435 rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
436 rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
437 rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
438 rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
441 (* Redraw the display. *)
442 let redraw, clear_pcpu_display_data =
443 (* We cache the list of block devices and interfaces for each domain
444 * here, so we don't need to reparse the XML each time.
446 let devices = Hashtbl.create 13 in
448 (* Function to get the list of block devices, network interfaces for
449 * a particular domain. Get it from the devices cache, and if not
450 * there then parse the domain XML.
452 let get_devices id dom =
453 try Hashtbl.find devices id
455 let blkdevs, netifs = (!parse_device_xml) id dom in
456 Hashtbl.replace devices id (blkdevs, netifs);
460 (* We save the state of domains across redraws here, which allows us
461 * to deduce %CPU usage from the running total.
463 let last_info = Hashtbl.create 13 in
464 let last_time = ref (Unix.gettimeofday ()) in
466 (* Save vcpuinfo structures across redraws too (only for pCPU display). *)
467 let last_vcpu_info = Hashtbl.create 13 in
469 (* Keep a historical list of %CPU usages. *)
470 let historical_cpu = ref [] in
471 let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
473 let redraw (conn, stdscr, node_info, hostname, _) =
476 (* Get the screen/window size. *)
477 let lines, cols = get_size () in
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
487 mvaddstr top_lineno 0 ("virt-top " ^ printable_time ^ " - ");
489 (* What's the total CPU time elapsed since we were last called? (ns) *)
490 let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
491 (* Avoid division by zero. *)
492 let total_cpu_per_pcpu =
493 if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
494 let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
496 (* Basic node_info. *)
497 addstr (sprintf "%s %d/%dCPU %dMHz %LdMB "
498 node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
499 (node_info.C.memory /^ 1024L));
500 (* Save the cursor position for when we come to draw the
501 * historical CPU times (down in this function).
503 let historical_cursor = getyx stdscr in
505 (* Get the domains. Match up with their last_info (if any). *)
507 (* Active domains. *)
508 let n = C.num_of_domains conn in
510 if n > 0 then Array.to_list (C.list_domains conn n)
516 let dom = D.lookup_by_id conn id in
517 let name = D.get_name dom in
518 let blkdevs, netifs = get_devices id dom in
520 (* Get current CPU, block and network stats. *)
521 let info = D.get_info dom in
523 try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
525 | Invalid_argument "virDomainBlockStats not supported"
526 | Libvirt.Virterror _ -> [] in
527 let interface_stats =
528 try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
530 | Invalid_argument "virDomainInterfaceStats not supported"
531 | Libvirt.Virterror _ -> [] in
533 let prev_info, prev_block_stats, prev_interface_stats =
535 let prev_info, prev_block_stats, prev_interface_stats =
536 Hashtbl.find last_info id in
537 Some prev_info, prev_block_stats, prev_interface_stats
538 with Not_found -> None, [], [] in
541 rd_domid = id; rd_dom = dom; rd_info = info;
542 rd_block_stats = block_stats;
543 rd_interface_stats = interface_stats;
544 rd_prev_info = prev_info;
545 rd_prev_block_stats = prev_block_stats;
546 rd_prev_interface_stats = prev_interface_stats;
547 rd_cpu_time = 0.; rd_percent_cpu = 0.;
548 rd_block_rd_reqs = None; rd_block_wr_reqs = None;
549 rd_net_rx_bytes = None; rd_net_tx_bytes = None;
552 Libvirt.Virterror _ -> None (* ignore transient error *)
555 (* Inactive domains. *)
558 let n = C.num_of_defined_domains conn in
560 if n > 0 then Array.to_list (C.list_defined_domains conn n)
562 List.map (fun name -> name, Inactive) names
564 (* Ignore transient errors, in particular errors from
565 * num_of_defined_domains if it cannot contact xend.
567 | Libvirt.Virterror _ -> [] in
569 doms @ doms_inactive in
571 (* Calculate the CPU time (ns) and %CPU used by each domain. *)
575 (* We have previous CPU info from which to calculate it? *)
576 | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
578 Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
579 let percent_cpu = 100. *. cpu_time /. total_cpu in
581 rd_cpu_time = cpu_time;
582 rd_percent_cpu = percent_cpu } in
584 (* For all other domains we can't calculate it, so leave as 0 *)
588 (* Calculate the number of block device read/write requests across
589 * all block devices attached to a domain.
594 (* Do we have stats from the previous slice? *)
595 | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
597 let block_stats = rd.rd_block_stats in (* stats now *)
599 (* Add all the devices together. Throw away device names. *)
600 let prev_block_stats =
601 sum_block_stats (List.map snd prev_block_stats) in
603 sum_block_stats (List.map snd block_stats) in
605 (* Calculate increase in read & write requests. *)
607 block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
609 block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
612 rd_block_rd_reqs = Some read_reqs;
613 rd_block_wr_reqs = Some write_reqs } in
615 (* For all other domains we can't calculate it, so leave as None. *)
619 (* Calculate the same as above for network interfaces across
620 * all network interfaces attached to a domain.
625 (* Do we have stats from the previous slice? *)
626 | name, Active ({ rd_prev_interface_stats =
627 ((_::_) as prev_interface_stats) }
629 let interface_stats = rd.rd_interface_stats in (* stats now *)
631 (* Add all the devices together. Throw away device names. *)
632 let prev_interface_stats =
633 sum_interface_stats (List.map snd prev_interface_stats) in
634 let interface_stats =
635 sum_interface_stats (List.map snd interface_stats) in
637 (* Calculate increase in rx & tx bytes. *)
639 interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
641 interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
644 rd_net_rx_bytes = Some rx_bytes;
645 rd_net_tx_bytes = Some tx_bytes } in
647 (* For all other domains we can't calculate it, so leave as None. *)
651 (match !display_mode with
652 | TaskDisplay -> (*---------- Showing domains ----------*)
653 (* Sort domains on current sort_order. *)
656 match !sort_order with
658 (fun _ -> 0) (* fallthrough to default name compare *)
661 | Active rd1, Active rd2 ->
662 compare rd2.rd_percent_cpu rd1.rd_percent_cpu
663 | Active _, Inactive -> -1
664 | Inactive, Active _ -> 1
665 | Inactive, Inactive -> 0)
668 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
669 compare info2.D.memory info1.D.memory
670 | Active _, Inactive -> -1
671 | Inactive, Active _ -> 1
672 | Inactive, Inactive -> 0)
675 | Active { rd_info = info1 }, Active { rd_info = info2 } ->
676 compare info2.D.cpu_time info1.D.cpu_time
677 | Active _, Inactive -> -1
678 | Inactive, Active _ -> 1
679 | Inactive, Inactive -> 0)
682 | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
684 | Active _, Inactive -> -1
685 | Inactive, Active _ -> 1
686 | Inactive, Inactive -> 0)
689 | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
691 | Active _, Inactive -> -1
692 | Inactive, Active _ -> 1
693 | Inactive, Inactive -> 0)
696 | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
698 | Active _, Inactive -> -1
699 | Inactive, Active _ -> 1
700 | Inactive, Inactive -> 0)
703 | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
705 | Active _, Inactive -> -1
706 | Inactive, Active _ -> 1
707 | Inactive, Inactive -> 0)
710 | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
712 | Active _, Inactive -> -1
713 | Inactive, Active _ -> 1
714 | Inactive, Inactive -> 0)
716 let cmp (name1, dom1) (name2, dom2) =
717 let r = cmp (dom1, dom2) in
719 else compare name1 name2
721 List.sort ~cmp doms in
725 mvaddstr header_lineno 0
726 (pad cols " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME");
729 let rec loop lineno = function
731 | (name, Active rd) :: doms ->
732 if lineno < lines then (
733 let state = show_state rd.rd_info.D.state in
734 let rd_req = show_int64_option rd.rd_block_rd_reqs in
735 let wr_req = show_int64_option rd.rd_block_wr_reqs in
736 let rx_bytes = show_int64_option rd.rd_net_rx_bytes in
737 let tx_bytes = show_int64_option rd.rd_net_tx_bytes in
738 let percent_cpu = show_percent rd.rd_percent_cpu in
740 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
741 let percent_mem = Int64.to_float percent_mem in
742 let percent_mem = show_percent percent_mem in
743 let time = show_time rd.rd_info.D.cpu_time in
745 let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
746 rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
747 percent_cpu percent_mem time name in
748 let line = pad cols line in
749 mvaddstr lineno 0 line;
752 | (name, Inactive) :: doms -> (* inactive domain *)
753 if lineno < lines then (
758 let line = pad cols line in
759 mvaddstr lineno 0 line;
763 loop domains_lineno doms
765 | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
766 (* Get the VCPU info and VCPU->PCPU mappings for active domains.
767 * Also cull some data we don't care about.
769 let doms = List.filter_map (
771 | (name, Active rd) ->
773 let domid = rd.rd_domid in
774 let maplen = C.cpumaplen nr_pcpus in
775 let maxinfo = rd.rd_info.D.nr_virt_cpu in
776 let nr_vcpus, vcpu_infos, cpumaps =
777 D.get_vcpus rd.rd_dom maxinfo maplen in
779 (* Got previous vcpu_infos for this domain? *)
780 let prev_vcpu_infos =
781 try Some (Hashtbl.find last_vcpu_info domid)
782 with Not_found -> None in
783 (* Update last_vcpu_info. *)
784 Hashtbl.replace last_vcpu_info domid vcpu_infos;
786 (match prev_vcpu_infos with
787 | Some prev_vcpu_infos
788 when Array.length prev_vcpu_infos = Array.length vcpu_infos ->
789 Some (domid, name, nr_vcpus, vcpu_infos, prev_vcpu_infos,
791 | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
794 Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
796 | (_, Inactive) -> None (* ignore inactive doms *)
798 let nr_doms = List.length doms in
800 (* Rearrange the data into a matrix. Major axis (down) is
801 * pCPUs. Minor axis (right) is domains. At each node we store:
802 * cpu_time (on this pCPU only, nanosecs),
803 * average? (if set, then cpu_time is an average because the
804 * vCPU is pinned to more than one pCPU)
805 * running? (if set, we were instantaneously running on this pCPU)
807 let empty_node = (0L, false, false) in
808 let pcpus = Array.make_matrix nr_pcpus nr_doms empty_node in
811 fun di (domid, name, nr_vcpus, vcpu_infos, prev_vcpu_infos,
813 (* Which pCPUs can this dom run on? *)
814 for v = 0 to nr_vcpus-1 do
815 let pcpu = vcpu_infos.(v).D.cpu in (* instantaneous pCPU *)
816 let nr_poss_pcpus = ref 0 in (* how many pcpus can it run on? *)
817 for p = 0 to nr_pcpus-1 do
818 (* vcpu v can reside on pcpu p *)
819 if C.cpu_usable cpumaps maplen v p then
822 let nr_poss_pcpus = Int64.of_int !nr_poss_pcpus in
823 for p = 0 to nr_pcpus-1 do
824 (* vcpu v can reside on pcpu p *)
825 if C.cpu_usable cpumaps maplen v p then
826 let vcpu_time_on_pcpu =
827 vcpu_infos.(v).D.vcpu_time
828 -^ prev_vcpu_infos.(v).D.vcpu_time in
829 let vcpu_time_on_pcpu =
830 vcpu_time_on_pcpu /^ nr_poss_pcpus in
832 (vcpu_time_on_pcpu, nr_poss_pcpus > 1L, p = pcpu)
837 (* Sum the CPU time used by each pCPU, for the %CPU column. *)
838 let pcpus_cpu_time = Array.map (
840 let cpu_time = ref 0L in
841 for di = 0 to Array.length row-1 do
842 let t, _, _ = row.(di) in
843 cpu_time := !cpu_time +^ t
845 Int64.to_float !cpu_time
848 (* Display the pCPUs. *)
852 fun (_, name, _, _, _, _, _) ->
853 let len = String.length name in
854 let width = max (len+1) 7 in
859 mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names));
864 mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p);
865 let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
866 let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
867 addstr (show_percent percent_cpu);
871 fun di (domid, name, _, _, _, _, _) ->
872 let t, is_average, is_running = pcpus.(p).(di) in
873 let len = String.length name in
874 let width = max (len+1) 7 in
878 let t = Int64.to_float t in
879 let percent = 100. *. t /. total_cpu_per_pcpu in
880 sprintf "%s%c%c " (show_percent percent)
881 (if is_average then '=' else ' ')
882 (if is_running then '#' else ' ')
884 addstr (pad width str);
889 | NetDisplay -> (*---------- Showing network interfaces ----------*)
890 (* Only care about active domains. *)
891 let doms = List.filter_map (
893 | (name, Active rd) -> Some (name, rd)
894 | (_, Inactive) -> None
897 (* For each domain we have a list of network interfaces seen
898 * this slice, and seen in the previous slice, which we now
899 * match up to get a list of (domain, interface) for which
900 * we have current & previous knowledge. (And ignore the rest).
908 (* Have prev slice stats for this device? *)
910 List.assoc dev rd.rd_prev_interface_stats in
911 Some (dev, name, rd, stats, prev_stats)
912 with Not_found -> None
913 ) rd.rd_interface_stats
916 (* Finally we have a list of:
917 * device name, domain name, rd_* stuff, curr stats, prev stats.
919 let devs : (string * string * rd_active *
920 D.interface_stats * D.interface_stats) list =
923 (* Difference curr slice & prev slice. *)
924 let devs = List.map (
925 fun (dev, name, rd, curr, prev) ->
926 dev, name, rd, diff_interface_stats curr prev
929 (* Sort by current sort order, but map some of the standard
930 * sort orders into ones which makes sense here.
934 match !sort_order with
936 (fun _ -> 0) (* fallthrough to default name compare *)
938 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
940 | Processor | Memory | Time | BlockRdRq | BlockWrRq
941 (* fallthrough to RXBY comparison. *)
943 (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
946 (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
949 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
950 let r = cmp (stats1, rd1, stats2, rd2) in
952 else compare (dev1, name1) (dev2, name2)
954 List.sort ~cmp devs in
956 (* Print the header for network devices. *)
958 mvaddstr header_lineno 0
959 (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE");
962 (* Print domains and devices. *)
963 let rec loop lineno = function
965 | (dev, name, rd, stats) :: devs ->
966 if lineno < lines then (
967 let state = show_state rd.rd_info.D.state in
969 if stats.D.rx_bytes >= 0L
970 then show_int64 stats.D.rx_bytes
973 if stats.D.tx_bytes >= 0L
974 then show_int64 stats.D.tx_bytes
977 if stats.D.rx_packets >= 0L
978 then show_int64 stats.D.rx_packets
981 if stats.D.tx_packets >= 0L
982 then show_int64 stats.D.tx_packets
985 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
988 rx_packets tx_packets
990 let line = pad cols line in
991 mvaddstr lineno 0 line;
995 loop domains_lineno devs
997 | BlockDisplay -> (*---------- Showing block devices ----------*)
998 (* Only care about active domains. *)
999 let doms = List.filter_map (
1001 | (name, Active rd) -> Some (name, rd)
1002 | (_, Inactive) -> None
1005 (* For each domain we have a list of block devices seen
1006 * this slice, and seen in the previous slice, which we now
1007 * match up to get a list of (domain, device) for which
1008 * we have current & previous knowledge. (And ignore the rest).
1016 (* Have prev slice stats for this device? *)
1018 List.assoc dev rd.rd_prev_block_stats in
1019 Some (dev, name, rd, stats, prev_stats)
1020 with Not_found -> None
1024 (* Finally we have a list of:
1025 * device name, domain name, rd_* stuff, curr stats, prev stats.
1027 let devs : (string * string * rd_active *
1028 D.block_stats * D.block_stats) list =
1029 List.flatten devs in
1031 (* Difference curr slice & prev slice. *)
1032 let devs = List.map (
1033 fun (dev, name, rd, curr, prev) ->
1034 dev, name, rd, diff_block_stats curr prev
1037 (* Sort by current sort order, but map some of the standard
1038 * sort orders into ones which makes sense here.
1042 match !sort_order with
1044 (fun _ -> 0) (* fallthrough to default name compare *)
1046 (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
1048 | Processor | Memory | Time | NetRX | NetTX
1049 (* fallthrough to RDRQ comparison. *)
1051 (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
1054 (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
1057 let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
1058 let r = cmp (stats1, rd1, stats2, rd2) in
1060 else compare (dev1, name1) (dev2, name2)
1062 List.sort ~cmp devs in
1064 (* Print the header for block devices. *)
1066 mvaddstr header_lineno 0
1067 (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE");
1070 (* Print domains and devices. *)
1071 let rec loop lineno = function
1073 | (dev, name, rd, stats) :: devs ->
1074 if lineno < lines then (
1075 let state = show_state rd.rd_info.D.state in
1077 if stats.D.rd_bytes >= 0L
1078 then show_int64 stats.D.rd_bytes
1081 if stats.D.wr_bytes >= 0L
1082 then show_int64 stats.D.wr_bytes
1085 if stats.D.rd_req >= 0L
1086 then show_int64 stats.D.rd_req
1089 if stats.D.wr_req >= 0L
1090 then show_int64 stats.D.wr_req
1093 let line = sprintf "%5d %c %s %s %s %s %-12s %s"
1097 (pad 12 name) dev in
1098 let line = pad cols line in
1099 mvaddstr lineno 0 line;
1100 loop (lineno+1) devs
1103 loop domains_lineno devs
1106 (* Calculate and print totals. *)
1108 let totals = List.fold_left (
1109 fun (count, running, blocked, paused, shutdown, shutoff,
1110 crashed, active, inactive,
1111 total_cpu_time, total_memory, total_domU_memory) ->
1113 | (name, Active rd) ->
1114 let test state orig =
1115 if rd.rd_info.D.state = state then orig+1 else orig
1117 let running = test D.InfoRunning running in
1118 let blocked = test D.InfoBlocked blocked in
1119 let paused = test D.InfoPaused paused in
1120 let shutdown = test D.InfoShutdown shutdown in
1121 let shutoff = test D.InfoShutoff shutoff in
1122 let crashed = test D.InfoCrashed crashed in
1124 let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
1125 let total_memory = total_memory +^ rd.rd_info.D.memory in
1126 let total_domU_memory = total_domU_memory +^
1127 if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
1129 (count+1, running, blocked, paused, shutdown, shutoff,
1130 crashed, active+1, inactive,
1131 total_cpu_time, total_memory, total_domU_memory)
1133 | (name, Inactive) -> (* inactive domain *)
1134 (count+1, running, blocked, paused, shutdown, shutoff,
1135 crashed, active, inactive+1,
1136 total_cpu_time, total_memory, total_domU_memory)
1137 ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
1139 let (count, running, blocked, paused, shutdown, shutoff,
1140 crashed, active, inactive,
1141 total_cpu_time, total_memory, total_domU_memory) = totals in
1143 mvaddstr summary_lineno 0
1144 (sprintf "%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d"
1145 count active running blocked paused inactive shutdown shutoff
1148 (* Total %CPU used, and memory summary. *)
1149 let percent_cpu = 100. *. total_cpu_time /. total_cpu in
1150 mvaddstr (summary_lineno+1) 0
1151 (sprintf "CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)"
1152 percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L));
1154 (* Time to grab another historical %CPU for the list? *)
1155 if time >= !historical_cpu_last_time +. float !historical_cpu_delay
1157 historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
1158 historical_cpu_last_time := time
1161 (* Display historical CPU time. *)
1163 let x, y = historical_cursor in (* Yes, it's a bug in ocaml-curses *)
1164 let maxwidth = cols - x in
1167 (List.map (sprintf "%2.1f%%") !historical_cpu) in
1168 let line = pad maxwidth line in
1172 (* Write summary data to CSV file. See also write_csv_header (). *)
1173 if !csv_enabled then (
1175 hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
1176 string_of_int count; string_of_int running; string_of_int blocked;
1177 string_of_int paused; string_of_int shutdown; string_of_int shutoff;
1178 string_of_int crashed; string_of_int active; string_of_int inactive;
1179 sprintf "%2.1f" percent_cpu;
1180 Int64.to_string total_memory; Int64.to_string total_domU_memory;
1181 Int64.to_string (Int64.of_float total_cpu_time)
1188 (* Update last_info, last_time. *)
1190 Hashtbl.clear last_info;
1194 let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
1195 Hashtbl.add last_info rd.rd_domid info
1199 move message_lineno 0 (* Park cursor in message area, as with top. *)
1202 let clear_pcpu_display_data () =
1203 (* Clear out vcpu_info used by PCPUDisplay
1204 * display_mode when we switch back to TaskDisplay mode.
1206 Hashtbl.clear last_vcpu_info
1209 redraw, clear_pcpu_display_data
1212 let rec main_loop state =
1213 if !csv_enabled then write_csv_header ();
1219 (* Clear up unused virDomainPtr objects. *)
1222 if not !batch_mode then
1224 else (* Batch mode - just sleep, ignore keys. *)
1225 Unix.sleep (!delay / 1000);
1227 (* Max iterations? *)
1228 if !iterations >= 0 then (
1230 if !iterations = 0 then quit := true
1234 and get_key_press state =
1235 (* Read the next key, waiting up to !delay milliseconds. *)
1238 timeout (-1); (* Reset to blocking mode. *)
1240 if k >= 0 && k <> 32 (* ' ' *) && k <> 12 (* ^L *) && k <> Key.resize
1242 if k = Char.code 'q' then quit := true
1243 else if k = Char.code 'h' then show_help state
1244 else if k = Char.code 's' || k = Char.code 'd' then change_delay ()
1245 else if k = Char.code 'M' then sort_order := Memory
1246 else if k = Char.code 'P' then sort_order := Processor
1247 else if k = Char.code 'T' then sort_order := Time
1248 else if k = Char.code 'N' then sort_order := DomainID
1249 else if k = Char.code 'F' then change_sort_order ()
1250 else if k = Char.code '0' then set_tasks_display ()
1251 else if k = Char.code '1' then toggle_pcpu_display ()
1252 else if k = Char.code '2' then toggle_net_display ()
1253 else if k = Char.code '3' then toggle_block_display ()
1254 else if k = Char.code 'W' then write_init_file ()
1255 else unknown_command k
1258 and change_delay () =
1259 print_msg (sprintf "Change delay from %.1f to: " (float !delay /. 1000.));
1260 let str = get_string 16 in
1261 (* Try to parse the number. *)
1264 let newdelay = float_of_string str in
1265 if newdelay <= 0. then (
1266 print_msg "Delay must be > 0"; true
1268 delay := int_of_float (newdelay *. 1000.); false
1271 Failure "float_of_string" ->
1272 print_msg "Not a valid number"; true in
1273 sleep (if error then 2 else 1)
1275 and change_sort_order () =
1277 let lines, cols = get_size () in
1279 mvaddstr top_lineno 0 "Set sort order for main display";
1280 mvaddstr summary_lineno 0 "Type key or use up and down cursor keys.";
1283 mvaddstr header_lineno 0 (pad cols "KEY Sort field");
1286 let accelerator_key = function
1287 | Memory -> "(key: M)"
1288 | Processor -> "(key: P)"
1289 | Time -> "(key: T)"
1290 | DomainID -> "(key: N)"
1291 | _ -> (* all others have to be changed from here *) ""
1294 let rec key_of_int = function
1295 | i when i < 10 -> Char.chr (i + Char.code '0')
1296 | i when i < 20 -> Char.chr (i + Char.code 'a')
1298 and int_of_key = function
1299 | k when k >= 0x30 && k <= 0x39 (* '0' - '9' *) -> k - 0x30
1300 | k when k >= 0x61 && k <= 0x7a (* 'a' - 'j' *) -> k - 0x61 + 10
1301 | k when k >= 0x41 && k <= 0x6a (* 'A' - 'J' *) -> k - 0x41 + 10
1305 (* Display possible sort fields. *)
1306 let selected_index = ref 0 in
1309 let selected = !sort_order = ord in
1310 if selected then selected_index := i;
1311 mvaddstr (domains_lineno+i) 0
1312 (sprintf " %c %s %s %s"
1313 (key_of_int i) (if selected then "*" else " ")
1314 (printable_sort_order ord)
1315 (accelerator_key ord))
1318 move message_lineno 0;
1321 if k >= 0 && k <> 32 && k <> Char.code 'q' && k <> 13 then (
1322 let new_order, loop =
1323 (* Redraw the display. *)
1324 if k = 12 (* ^L *) then None, true
1325 (* Make the UP and DOWN arrow keys do something useful. *)
1326 else if k = Key.up then (
1327 if !selected_index > 0 then
1328 Some (List.nth all_sort_fields (!selected_index-1)), true
1332 else if k = Key.down then (
1333 if !selected_index < List.length all_sort_fields - 1 then
1334 Some (List.nth all_sort_fields (!selected_index+1)), true
1338 (* Also understand the regular accelerator keys. *)
1339 else if k = Char.code 'M' then
1341 else if k = Char.code 'P' then
1342 Some Processor, false
1343 else if k = Char.code 'T' then
1345 else if k = Char.code 'N' then
1346 Some DomainID, false
1348 (* It's one of the KEYs. *)
1349 let i = int_of_key k in
1350 if i >= 0 && i < List.length all_sort_fields then
1351 Some (List.nth all_sort_fields i), false
1356 (match new_order with
1359 sort_order := new_order;
1360 print_msg (sprintf "Sort order changed to: %s"
1361 (printable_sort_order new_order));
1362 if not loop then sleep 1
1365 if loop then change_sort_order ()
1368 (* Note: We need to clear_pcpu_display_data every time
1369 * we _leave_ PCPUDisplay mode.
1371 and set_tasks_display () = (* key 0 *)
1372 if !display_mode = PCPUDisplay then clear_pcpu_display_data ();
1373 display_mode := TaskDisplay
1375 and toggle_pcpu_display () = (* key 1 *)
1377 match !display_mode with
1378 | TaskDisplay | NetDisplay | BlockDisplay -> PCPUDisplay
1379 | PCPUDisplay -> clear_pcpu_display_data (); TaskDisplay
1381 and toggle_net_display () = (* key 2 *)
1383 match !display_mode with
1384 | PCPUDisplay -> clear_pcpu_display_data (); NetDisplay
1385 | TaskDisplay | BlockDisplay -> NetDisplay
1386 | NetDisplay -> TaskDisplay
1388 and toggle_block_display () = (* key 3 *)
1390 match !display_mode with
1391 | PCPUDisplay -> clear_pcpu_display_data (); BlockDisplay
1392 | TaskDisplay | NetDisplay -> BlockDisplay
1393 | BlockDisplay -> TaskDisplay
1395 (* Write an init file. *)
1396 and write_init_file () =
1397 match !init_file with
1398 | NoInitFile -> () (* Do nothing if --no-init-file *)
1399 | DefaultInitFile ->
1400 let home = try Sys.getenv "HOME" with Not_found -> "/" in
1401 let filename = home // ".virt-toprc" in
1402 _write_init_file filename
1403 | InitFile filename ->
1404 _write_init_file filename
1406 and _write_init_file filename =
1408 (* Create the new file as filename.new. *)
1409 let chan = open_out (filename ^ ".new") in
1411 let time = Unix.gettimeofday () in
1412 let tm = Unix.localtime time in
1413 let printable_date_time =
1414 sprintf "%04d-%02d-%02d %02d:%02d:%02d"
1415 (tm.Unix.tm_year + 1900) (tm.Unix.tm_mon+1) tm.Unix.tm_mday
1416 tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
1419 let uid = Unix.geteuid () in
1420 (Unix.getpwuid uid).Unix.pw_name
1422 Not_found -> "unknown" in
1425 let nl () = fp chan "\n" in
1426 fp chan "# .virt-toprc virt-top configuration file\n";
1427 fp chan "# generated on %s by %s\n" printable_date_time username;
1429 fp chan "display %s\n" (cli_of_display !display_mode);
1430 fp chan "delay %g\n" (float !delay /. 1000.);
1431 fp chan "hist-cpu %d\n" !historical_cpu_delay;
1432 if !iterations <> -1 then fp chan "iterations %d\n" !iterations;
1433 fp chan "sort %s\n" (cli_of_sort_order !sort_order);
1436 | Some uri -> fp chan "connect %s\n" uri
1438 if !batch_mode = true then fp chan "batch true\n";
1439 if !secure_mode = true then fp chan "secure true\n";
1441 fp chan "# To send debug and error messages to a file, uncomment next line\n";
1442 fp chan "#debug virt-top.out\n";
1444 fp chan "# Enable CSV output to the named file\n";
1445 fp chan "#csv virt-top.csv\n";
1447 fp chan "# To protect this file from being overwritten, uncomment next line\n";
1448 fp chan "#overwrite-init-file false\n";
1452 (* If the file exists, rename it as filename.old. *)
1453 (try Unix.rename filename (filename ^ ".old")
1454 with Unix.Unix_error _ -> ());
1456 (* Rename filename.new to filename. *)
1457 Unix.rename (filename ^ ".new") filename;
1459 print_msg (sprintf "Wrote settings to %s" filename); sleep 2
1461 | Sys_error err -> print_msg "Error: %s"; sleep 2
1462 | Unix.Unix_error (err, fn, str) ->
1463 print_msg (sprintf "Error: %s %s %s" (Unix.error_message err) fn str);
1466 and show_help (_, _, _, hostname,
1467 (libvirt_major, libvirt_minor, libvirt_release)) =
1470 (* Get the screen/window size. *)
1471 let lines, cols = get_size () in
1473 (* Banner at the top of the screen. *)
1475 sprintf "virt-top %s (libvirt %d.%d.%d) by Red Hat"
1476 Libvirt_version.version libvirt_major libvirt_minor libvirt_release in
1477 let banner = pad cols banner in
1479 mvaddstr 0 0 banner;
1484 (sprintf "Delay: %.1f secs; Batch: %s; Secure: %s; Sort: %s"
1485 (float !delay /. 1000.)
1486 (if !batch_mode then "On" else "Off")
1487 (if !secure_mode then "On" else "Off")
1488 (printable_sort_order !sort_order));
1490 (sprintf "Connect: %s; Hostname: %s"
1491 (match !uri with None -> "default" | Some s -> s)
1494 (* Misc keys on left. *)
1495 let banner = pad 38 "MAIN KEYS" in
1497 mvaddstr header_lineno 1 banner;
1501 let lineno = ref domains_lineno in
1502 fun () -> let i = !lineno in incr lineno; i
1504 let key keys description =
1505 let lineno = get_lineno () in
1506 move lineno 1; attron A.bold; addstr keys; attroff A.bold;
1507 move lineno 10; addstr description; ()
1509 key "space ^L" "Update display";
1511 key "d s" "Set update interval";
1515 ignore (get_lineno ());
1516 let banner = pad 38 "SORTING" in
1518 mvaddstr (get_lineno ()) 1 banner;
1521 key "P" "Sort by %CPU";
1522 key "M" "Sort by %MEM";
1523 key "T" "Sort by TIME";
1524 key "N" "Sort by ID";
1525 key "F" "Select sort field";
1527 (* Display modes on right. *)
1528 let banner = pad 39 "DISPLAY MODES" in
1530 mvaddstr header_lineno 40 banner;
1534 let lineno = ref domains_lineno in
1535 fun () -> let i = !lineno in incr lineno; i
1537 let key keys description =
1538 let lineno = get_lineno () in
1539 move lineno 40; attron A.bold; addstr keys; attroff A.bold;
1540 move lineno 49; addstr description; ()
1542 key "0" "Domains display";
1543 key "1" "Toggle physical CPUs";
1544 key "2" "Toggle network interfaces";
1545 key "3" "Toggle block devices";
1547 (* Update screen and wait for key press. *)
1548 mvaddstr (lines-1) 0
1549 "More help in virt-top(1) man page. Press any key to return.";
1553 and unknown_command k =
1554 print_msg "Unknown command - try 'h' for help";