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Manually run GC on reactor tick.
This also adds a metric for amount of time spent in GC.
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@ -22,6 +22,7 @@ import functools
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import os
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import stat
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import time
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import gc
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from twisted.internet import reactor
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@ -155,6 +156,7 @@ get_metrics_for("process").register_callback("fds", _process_fds, labels=["type"
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reactor_metrics = get_metrics_for("reactor")
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tick_time = reactor_metrics.register_distribution("tick_time")
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pending_calls_metric = reactor_metrics.register_distribution("pending_calls")
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gc_time = reactor_metrics.register_distribution("gc_time")
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def runUntilCurrentTimer(func):
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@ -182,6 +184,18 @@ def runUntilCurrentTimer(func):
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end = time.time() * 1000
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tick_time.inc_by(end - start)
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pending_calls_metric.inc_by(num_pending)
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threshold = gc.get_threshold()
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counts = gc.get_count()
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start = time.time() * 1000
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for i in [2, 1, 0]:
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if threshold[i] < counts[i]:
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logger.info("Collecting gc %d", i)
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gc.collect(i)
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end = time.time() * 1000
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gc_time.inc_by(end - start)
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return ret
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return f
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@ -196,5 +210,6 @@ try:
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# runUntilCurrent is called when we have pending calls. It is called once
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# per iteratation after fd polling.
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reactor.runUntilCurrent = runUntilCurrentTimer(reactor.runUntilCurrent)
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gc.disable()
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except AttributeError:
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pass
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