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https://github.com/element-hq/synapse
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Use /proc/self/stat to generate the new process_cpu_*_seconds_total metrics
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1 changed files with 12 additions and 4 deletions
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@ -112,13 +112,21 @@ def render_all():
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# Now register some standard process-wide state metrics, to give indications of
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# process resource usage
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rusage = None
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TICKS_PER_SEC = 100
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rusage = None
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stats = None
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def update_resource_metrics():
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global rusage
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rusage = getrusage(RUSAGE_SELF)
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global stats
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with open("/proc/self/stat") as s:
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line = s.read()
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# line is PID (command) more stats go here ...
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stats = line.split(") ", 1)[1].split(" ")
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## Legacy synapse-invented metric names
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resource_metrics = get_metrics_for("process.resource")
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@ -171,13 +179,13 @@ get_metrics_for("process").register_callback("fds", _process_fds, labels=["type"
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process_metrics = get_metrics_for("process");
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process_metrics.register_callback(
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"cpu_user_seconds_total", lambda: rusage.ru_utime
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"cpu_user_seconds_total", lambda: float(stats[11]) / TICKS_PER_SEC
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)
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process_metrics.register_callback(
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"cpu_system_seconds_total", lambda: rusage.ru_stime
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"cpu_system_seconds_total", lambda: float(stats[12]) / TICKS_PER_SEC
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)
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process_metrics.register_callback(
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"cpu_seconds_total", lambda: rusage.ru_utime + rusage.ru_stime
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"cpu_seconds_total", lambda: (float(stats[11]) + float(stats[12])) / TICKS_PER_SEC
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)
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reactor_metrics = get_metrics_for("reactor")
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