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2026-09-02 - 12:34
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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 Sep 02, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31881991637,86cyclictest0-21swapper/023:35:130
318859910876,19cyclictest26-21ksoftirqd/121:25:121
318859910775,17cyclictest26-21ksoftirqd/120:25:161
318859910576,19cyclictest26-21ksoftirqd/119:20:121
318859910374,18cyclictest26-21ksoftirqd/121:55:141
318859910270,20cyclictest26-21ksoftirqd/121:30:141
318859910270,20cyclictest26-21ksoftirqd/121:30:141
31404210135,19sleep10-21swapper/119:06:501
318859910073,17cyclictest26-21ksoftirqd/121:40:221
318859910071,19cyclictest26-21ksoftirqd/122:30:261
31316210027,26sleep00-21swapper/019:05:540
1020721000,6chrt10206-21sed21:10:011
31885999767,20cyclictest26-21ksoftirqd/120:00:121
31885999667,19cyclictest26-21ksoftirqd/123:45:151
31885999665,21cyclictest26-21ksoftirqd/120:40:161
31885999464,20cyclictest26-21ksoftirqd/123:15:151
31885999356,24cyclictest26-21ksoftirqd/119:15:151
31885999259,22cyclictest26-21ksoftirqd/121:35:231
31885999158,21cyclictest26-21ksoftirqd/120:35:131
31885998953,21cyclictest26-21ksoftirqd/121:10:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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