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2026-07-09 - 10:33
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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 rack3slot6.osadl.org (updated Thu Jul 09, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1129421340,6chrt11292-21grep19:45:340
298339912272,31cyclictest26-21ksoftirqd/100:00:261
298279910578,18cyclictest14-21ksoftirqd/022:35:120
298279910371,18cyclictest14-21ksoftirqd/023:55:140
298279910371,18cyclictest14-21ksoftirqd/023:55:140
29833991028,21cyclictest0-21swapper/100:35:141
298339910210,23cyclictest0-21swapper/122:15:101
298339910210,23cyclictest0-21swapper/122:15:101
298279910174,18cyclictest14-21ksoftirqd/021:50:120
29827999968,18cyclictest0-21swapper/022:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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