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2025-12-15 - 15:45
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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 Dec 15, 2025 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3703836991640,163cyclictest0-21swapper/708:00:387
370383399112112,0cyclictest0-21swapper/411:35:364
370383399980,98cyclictest0-21swapper/410:05:334
3703833999113,59cyclictest1087-21snmpd11:20:234
3703833999011,39cyclictest3832185-21aten2.4-expect10:55:144
3703833997214,39cyclictest3760120-21taskset08:45:344
3703833996727,39cyclictest3728524-21ntp_states07:50:194
3703833996625,19cyclictest3881744-21ntpq12:20:204
3703833995918,20cyclictest3704159-21kworker/u32:007:20:504
3703832995958,1cyclictest511ktimers/310:40:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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