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2026-05-23 - 18:11
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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 Sat May 23, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8063210318,39sleep00-21swapper/007:08:270
816929623,17sleep10-21swapper/107:09:041
8393998567,11cyclictest14-21ksoftirqd/007:45:140
8393998356,16cyclictest0-21swapper/008:55:130
8393998314,62cyclictest0-21swapper/007:15:120
200992800,6sleep020102-21grep10:40:370
8393997858,10cyclictest14-21ksoftirqd/009:25:150
8396997734,22cyclictest26-21ksoftirqd/109:00:011
8393997751,13cyclictest14-21ksoftirqd/010:00:150
8393997656,10cyclictest14-21ksoftirqd/012:10:130
8393997650,15cyclictest0-21swapper/009:05:110
8396997532,22cyclictest26-21ksoftirqd/110:25:001
8393997553,10cyclictest14-21ksoftirqd/008:45:120
8396997430,22cyclictest26-21ksoftirqd/108:25:001
8393997446,15cyclictest14-21ksoftirqd/010:30:160
8393997350,13cyclictest14-21ksoftirqd/011:05:150
8393997346,16cyclictest0-21swapper/007:25:140
8393997247,11cyclictest14-21ksoftirqd/010:05:140
219952720,3sleep10-21swapper/109:15:441
8396997128,22cyclictest26-21ksoftirqd/109:35:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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