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2026-06-04 - 09:10
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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 20 highest latencies:
System rackdslot3.osadl.org (updated Thu Jun 04, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491240172,23phc2sys0-21swapper/319:06:543
177292205172,22sleep20-21swapper/219:08:122
175342201168,22sleep10-21swapper/119:05:451
175382200167,22sleep00-21swapper/019:05:490
1394918663,15phc2sys0-21swapper/319:10:003
1816099659,16cyclictest27885-21latency_hist21:25:000
1816099659,16cyclictest24363-21cpu22:25:110
1816299610,26cyclictest18356-21grep23:20:122
1816299610,26cyclictest18356-21grep23:20:122
1816099599,17cyclictest10791-21irqrtprio00:10:190
1816099579,11cyclictest16624-21cat20:50:090
1816099569,15cyclictest8659-21ls00:05:210
1816099569,14cyclictest13328-21apt-config20:40:010
1816099568,12cyclictest15155-21ls23:10:260
1816099559,15cyclictest10642-21diskstats20:30:110
1816099559,14cyclictest2903-21apt-get21:40:110
1816099559,14cyclictest24402-21apt-get19:30:080
1816099558,14cyclictest21414-21apt-get19:20:080
1816099558,14cyclictest1196-21apt-get20:00:070
1816099558,14cyclictest10003-21apt-get21:55:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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