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2026-04-22 - 07:39
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Wed Apr 22, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254529719,33sleep10-21swapper/119:05:431
111452900,6sleep00-21swapper/022:30:260
68392880,6sleep06840-21ls20:50:000
68392880,6sleep06840-21ls20:50:000
3130998866,11cyclictest0-21swapper/000:05:140
3130998866,11cyclictest0-21swapper/000:05:140
3130998657,16cyclictest0-21swapper/023:55:110
3130998157,13cyclictest0-21swapper/022:50:130
236382810,5chrt0-21swapper/123:05:261
3130997954,13cyclictest14-21ksoftirqd/023:35:140
139127929,38sleep00-21swapper/019:05:130
3130997856,10cyclictest14-21ksoftirqd/023:15:130
3130997855,11cyclictest14-21ksoftirqd/020:00:120
3130997855,11cyclictest14-21ksoftirqd/020:00:120
3130997848,24cyclictest14-21ksoftirqd/023:40:160
3130997759,10cyclictest14-21ksoftirqd/021:05:140
3130997753,12cyclictest14-21ksoftirqd/021:55:130
3134997356,10cyclictest26-21ksoftirqd/120:50:341
3130997346,13cyclictest14-21ksoftirqd/020:25:120
3130997246,14cyclictest14-21ksoftirqd/021:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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