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2026-06-20 - 10:06
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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 Sat Jun 20, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3487317999898,0cyclictest3663621-21df_inode00:30:133
3487317997716,59cyclictest3523926-21grep20:15:153
3487317997132,39cyclictest0-21swapper/300:19:353
3487317997032,38cyclictest0-21swapper/323:39:593
3487317997031,39cyclictest0-21swapper/323:52:263
3487317996931,19cyclictest511ktimers/323:46:193
3487317996930,39cyclictest0-21swapper/322:34:153
348731799688,20cyclictest3602415-21sed22:40:003
3487317996831,18cyclictest0-21swapper/321:50:503
3487317996647,19cyclictest0-21swapper/320:30:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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