author | Matthew Wild <mwild1@gmail.com> |
Tue, 16 Apr 2024 14:15:16 +0100 | |
changeset 5891 | 2aa66e928aa0 |
parent 4882 | c26f515751af |
permissions | -rw-r--r-- |
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mod_measure_process: Provide metrics about the process itself
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parents:
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module:set_global() |
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local get_cpu_time = os.clock |
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local custom_metric = require "core.statsmanager".metric |
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local cpu_time = custom_metric( |
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"counter", "process_cpu", "seconds", |
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"CPU time used by Prosody as reported by clock(3)." |
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):with_labels() |
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local lfs = require "lfs" |
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module:hook("stats-update", function () |
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cpu_time:set(get_cpu_time()) |
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end); |
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if lfs.attributes("/proc/self/statm", "mode") == "file" then |
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local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE |
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local vsz = custom_metric( |
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"gauge", "process_virtual_memory", "bytes", |
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"Virtual memory size in bytes." |
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):with_labels() |
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local rss = custom_metric( |
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"gauge", "process_resident_memory", "bytes", |
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"Resident memory size in bytes." |
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):with_labels() |
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module:hook("stats-update", function () |
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local statm, err = io.open("/proc/self/statm"); |
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if not statm then |
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module:log("error", tostring(err)); |
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return; |
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end |
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-- virtual memory (caches, opened librarys, everything) |
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vsz:set(statm:read("*n") * pagesize); |
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-- resident set size (actually used memory) |
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rss:set(statm:read("*n") * pagesize); |
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statm:close(); |
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end); |
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end |
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if lfs.attributes("/proc/self/fd", "mode") == "directory" then |
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local open_fds = custom_metric( |
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"gauge", "process_open_fds", "", |
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"Number of open file descriptors." |
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):with_labels() |
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local has_posix, posix = pcall(require, "util.pposix") |
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local max_fds |
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if has_posix then |
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max_fds = custom_metric( |
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"gauge", "process_max_fds", "", |
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"Maximum number of open file descriptors" |
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):with_labels() |
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else |
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module:log("warn", "not reporting maximum number of file descriptors because mod_posix is not available") |
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end |
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c26f515751af
mod_measure_process: Handle unlimited FD limits
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local function limit2num(limit) |
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if limit == "unlimited" then |
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return math.huge |
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end |
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return limit |
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end |
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module:hook("stats-update", function () |
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local count = 0 |
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for _ in lfs.dir("/proc/self/fd") do |
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count = count + 1 |
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end |
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open_fds:set(count) |
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if has_posix then |
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local ok, soft, hard = posix.getrlimit("NOFILE") |
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if ok then |
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max_fds:set(limit2num(soft or hard)); |
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end |
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end |
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end); |
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end |