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2026-06-21 - 20:59
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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 Sun Jun 21, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300668399940,2cyclictest0-21swapper/509:55:135
3006682999436,39cyclictest3057836-21missed_timers08:40:184
3006682999436,39cyclictest3057836-21missed_timers08:40:184
3006682999334,20cyclictest3035323-21if_eno108:00:164
3006682999111,59cyclictest3149108-21ntpq11:25:194
3006679999189,1cyclictest1-21systemd12:30:021
3006679998910,19cyclictest0-21swapper/109:50:181
3006682997639,18cyclictest601ktimers/408:51:144
3006682997639,18cyclictest601ktimers/408:51:144
3006682997414,40cyclictest0-21swapper/410:31:364
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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