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2026-08-03 - 21:14
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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 10 highest latencies:
System rackfslot7.osadl.org (updated Mon Aug 03, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3848167998024,37cyclictest3879911-21kworker/u32:3+events_unbound09:50:124
384816699800,1cyclictest0-21swapper/312:05:163
384816799770,77cyclictest3886811-21seq08:15:374
3848169997233,39cyclictest0-21swapper/511:50:155
3848167997113,38cyclictest3964553-21munin-run10:40:024
384816799679,39cyclictest3972298-21taskset10:54:194
3848167996729,38cyclictest0-21swapper/408:06:374
3848167996527,38cyclictest0-21swapper/408:35:274
3848157996532,33cyclictest0-21swapper/112:05:121
3848157996528,18cyclictest870-21mta-sts-daemon12:30:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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