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2026-09-15 - 14:57
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Tue Sep 15, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183993921860,2sleep30-21swapper/300:00:023
161613121050,2sleep30-21swapper/321:54:313
16816802370,2sleep20-21swapper/222:32:582
1370149992418,2cyclictest82050irq/121-eno122:30:011
1370148992314,5cyclictest1575914-21/usr/sbin/munin21:34:350
1370148992211,7cyclictest1720535-21kthreadcore22:54:300
1370149992117,3cyclictest24614-21JS14:54:061
137014899219,7cyclictest0-21swapper/022:09:060
137014999209,4cyclictest1653230-21unixbench_singl22:14:341
137014899209,7cyclictest1754381-21kthreadcore23:14:260
137014899208,7cyclictest0-21swapper/000:29:270
1370148992010,6cyclictest1573552-21runrttasks21:29:500
1370150991915,2cyclictest0-21swapper/220:35:112
1370149991916,2cyclictest24815-21gsd-power00:04:461
1370149991916,2cyclictest24648-21gmain21:42:231
1370149991914,4cyclictest24617-21JS14:54:061
137014899199,6cyclictest0-21swapper/022:14:330
137014899199,5cyclictest0-21swapper/021:53:590
1370148991916,2cyclictest813-21systemd-logind21:15:020
1370148991911,4cyclictest1820932-21grep23:49:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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