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2024-04-20 - 11:16
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot4.osadl.org (updated Sat Apr 20, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21756362243179,21sleep00-21swapper/019:08:100
21754812231175,18sleep70-21swapper/719:06:017
21756952229170,19sleep40-21swapper/419:09:034
21756392220185,21sleep30-21swapper/319:08:143
21756182219189,19sleep20-21swapper/219:07:572
21755522212178,21sleep10-21swapper/119:06:581
21756032208178,19sleep50-21swapper/519:07:445
21755572208178,19sleep60-21swapper/619:07:046
2175980996012,24cyclictest0-21swapper/300:12:363
217597499360,30cyclictest2302697-21/usr/sbin/munin22:52:400
217597499340,1cyclictest0-21swapper/022:25:010
217597499330,28cyclictest0-21swapper/023:40:200
217597499330,28cyclictest0-21swapper/000:40:010
217597499320,1cyclictest0-21swapper/022:45:250
2175992993128,2cyclictest2305732-21latency_hist23:00:017
217599099310,2cyclictest2308523-21turbostat.cron23:05:016
217598799310,30cyclictest2336914-21apt-get23:55:215
217597499310,30cyclictest2207308-21latency_hist20:05:000
2175992993028,1cyclictest2347531-21fwupd00:12:327
2175992993026,3cyclictest2215609-21apt20:20:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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