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2025-12-13 - 07:22
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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
Characteristics of the 10 highest latencies:
System rack1slot1.osadl.org (updated Sat Dec 13, 2025 00:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
718923740,8sleep1201rcuc/119:05:201
77622205155,24sleep00-21swapper/019:08:370
75492199162,24sleep30-21swapper/319:05:513
55352188153,23sleep20-21swapper/219:05:012
797799160,15cyclictest3912-21/usr/sbin/munin22:25:112
797799150,14cyclictest6762-21awk21:20:172
797799150,14cyclictest0-21swapper/222:10:142
797799150,14cyclictest0-21swapper/220:10:012
7964991513,1cyclictest9-21ksoftirqd/022:30:010
797799140,13cyclictest6526-21grep20:12:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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