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Attempt to fix PhoneHomeStatsTestCase.test_performance_100 being flaky. (#7634)

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Patrick Cloke 2020-06-05 07:36:47 -04:00 committed by GitHub
parent 139bc86f3d
commit 02f345d053
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2 changed files with 24 additions and 19 deletions
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changelog.d/7634.misc Normal file
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@ -0,0 +1 @@
Attempt to fix flaky test: `PhoneHomeStatsTestCase.test_performance_100`.

42
synapse/app/homeserver.py
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@ -488,6 +488,29 @@ def phone_stats_home(hs, stats, stats_process=_stats_process):
if uptime < 0:
uptime = 0
#
# Performance statistics. Keep this early in the function to maintain reliability of `test_performance_100` test.
#
old = stats_process[0]
new = (now, resource.getrusage(resource.RUSAGE_SELF))
stats_process[0] = new
# Get RSS in bytes
stats["memory_rss"] = new[1].ru_maxrss
# Get CPU time in % of a single core, not % of all cores
used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
old[1].ru_utime + old[1].ru_stime
)
if used_cpu_time == 0 or new[0] == old[0]:
stats["cpu_average"] = 0
else:
stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
#
# General statistics
#
stats["homeserver"] = hs.config.server_name
stats["server_context"] = hs.config.server_context
stats["timestamp"] = now
@ -522,25 +545,6 @@ def phone_stats_home(hs, stats, stats_process=_stats_process):
stats["cache_factor"] = hs.config.caches.global_factor
stats["event_cache_size"] = hs.config.caches.event_cache_size
#
# Performance statistics
#
old = stats_process[0]
new = (now, resource.getrusage(resource.RUSAGE_SELF))
stats_process[0] = new
# Get RSS in bytes
stats["memory_rss"] = new[1].ru_maxrss
# Get CPU time in % of a single core, not % of all cores
used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
old[1].ru_utime + old[1].ru_stime
)
if used_cpu_time == 0 or new[0] == old[0]:
stats["cpu_average"] = 0
else:
stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
#
# Database version
#