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2026-04-11 - 07:17
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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 rackeslot8.osadl.org (updated Sat Apr 11, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242789921040,3sleep02427896-21cron19:25:000
25877812530,3sleep12587730-21ssh21:25:171
2406367993229,1cyclictest0-21swapper/300:00:003
2406367992926,1cyclictest0-21swapper/322:10:013
2406367992725,1cyclictest0-21swapper/321:50:143
2406367992421,1cyclictest0-21swapper/323:15:013
2406367992420,1cyclictest0-21swapper/323:20:123
240636799231,18cyclictest2531380-21turbostat20:45:003
2406367992220,0cyclictest0-21swapper/323:50:213
2406367992219,1cyclictest0-21swapper/300:30:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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