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2025-12-31 - 22:22
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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 rackfslot7.osadl.org (updated Wed Dec 31, 2025 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3919874991055,99cyclictest0-21swapper/411:15:164
3919874999313,39cyclictest4094928-21unixbench-2d12:15:234
391987599878,79cyclictest0-21swapper/507:50:165
391987699800,79cyclictest0-21swapper/610:15:166
391987499770,38cyclictest3963117-21/usr/sbin/munin08:25:154
3919874997513,39cyclictest4107194-21/usr/sbin/munin12:40:014
3919874997335,19cyclictest4072826-21munin-run11:40:014
3919874997133,38cyclictest3987338-21find09:05:214
3919874997131,19cyclictest0-21swapper/412:28:534
3919874997012,39cyclictest4078393-21latency_hist11:50:014
3919874996911,39cyclictest4075602-21cat11:45:014
3919874996829,20cyclictest0-21swapper/411:59:194
3919874996729,21cyclictest0-21swapper/410:13:074
3919874996728,39cyclictest0-21swapper/407:38:274
3919874996728,19cyclictest0-21swapper/409:25:514
3919874996627,19cyclictest0-21swapper/412:23:354
3919874996626,40cyclictest0-21swapper/408:53:294
3919874996526,39cyclictest0-21swapper/409:03:114
3919874996526,21cyclictest0-21swapper/409:11:394
3919874996526,0cyclictest0-21swapper/407:16:494
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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