albatross/stats/albatross_stat_client.ml

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open Vmm_core
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open Albatross_stats_pure
let old_rt = ref 0L
let timer pid vmmapi interval =
let rusage = sysctl_rusage pid in
Logs.app (fun m -> m "sysctl rusage: %a" Stats.pp_rusage_mem rusage) ;
let kinfo_mem = sysctl_kinfo_mem pid in
Logs.app (fun m -> m "kinfo mem: %a" Stats.pp_kinfo_mem kinfo_mem) ;
let delta, pct =
if !old_rt = 0L then
let delta = kinfo_mem.Stats.runtime in
let now = Unix.gettimeofday () in
let start =
Int64.to_float (fst kinfo_mem.start) +.
((float_of_int (snd kinfo_mem.start)) /. 1_000_000_000.)
in
delta, Int64.to_float delta /. ((now -. start) *. 1_000_000.)
else
let delta = Int64.sub kinfo_mem.Stats.runtime !old_rt in
delta, Int64.to_float delta /. (interval *. 1_000_000.)
in
Logs.app (fun m -> m "delta %Lu pct %f" delta pct) ;
old_rt := kinfo_mem.Stats.runtime;
match vmmapi with
| None -> ()
| Some vmctx -> match wrap vmmapi_stats vmctx with
| None -> Logs.app (fun m -> m "no vmctx stats")
| Some st ->
let all = List.combine !descr st in
Logs.app (fun m -> m "bhyve stats %a" Stats.pp_vmm_mem all)
let jump _ pid name interval =
Sys.(set_signal sigpipe Signal_ignore) ;
let interval = Duration.(to_f (of_sec interval)) in
Lwt_main.run (
let vmmapi = match name with
| None ->
Logs.warn (fun m -> m "no name, no vmmapi") ;
None
| Some name -> match wrap vmmapi_open name with
| None ->
Logs.warn (fun m -> m "vmmapi_open failed for %s" name) ;
None
| Some vmctx ->
Logs.info (fun m -> m "vmmapi_open succeeded for %s" name) ;
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fill_descr vmctx ;
Some vmctx
in
let _ev = Lwt_engine.on_timer interval true (fun _e -> timer pid vmmapi interval) in
let t, _u = Lwt.task () in
t)
open Cmdliner
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open Albatross_cli
let interval =
let doc = "Interval between statistics gatherings (in seconds)" in
Arg.(value & opt int 10 & info [ "interval" ] ~doc)
let pid =
let doc = "Process id (defaults to own pid)" in
Arg.(value & opt int (Unix.getpid ()) & info [ "pid" ] ~doc)
let vmname =
let doc = "VM name" in
Arg.(value & opt (some string) None & info [ "name" ] ~doc)
let cmd =
Term.(term_result (const jump $ setup_log $ pid $ vmname $ interval)),
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Term.info "albatross_stat_client" ~version:"%%VERSION_NUM%%"
let () = match Term.eval cmd with `Ok () -> exit 0 | _ -> exit 1