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2025-11-24 - 16:48
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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 Nov 24, 2025 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33833009910586,19cyclictest0-21swapper/009:35:180
3383304997737,19cyclictest6050ktimers/410:41:524
3383304997132,39cyclictest601ktimers/411:03:334
3383304996930,19cyclictest3420987-21df_inode08:15:154
3383304996930,19cyclictest3420987-21df_inode08:15:154
338330499679,39cyclictest3417430-21munin-run08:10:014
338330499677,39cyclictest3470930-21sshd09:42:214
338330499646,39cyclictest3512253-21ntp_states10:55:204
3383304996423,19cyclictest0-21swapper/409:15:004
3383304996224,38cyclictest3558927-21sed12:20:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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