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2026-05-15 - 20:52
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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 Fri May 15, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3614981997010,39cyclictest3738225-21awk10:50:183
361498199699,59cyclictest3721850-21ld10:20:183
3614981996910,19cyclictest0-21swapper/310:55:383
3614981996910,19cyclictest0-21swapper/310:47:103
3614981996910,19cyclictest0-21swapper/310:40:053
3614981996910,19cyclictest0-21swapper/310:35:323
3614981996829,19cyclictest3716418-21ntpq10:10:203
3614981996729,19cyclictest3672283-21ntp_states08:50:203
3614981996628,19cyclictest3772102-21latency_hist11:55:003
3614981996221,40cyclictest3631048-21taskset07:37:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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