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2026-09-24 - 05:51
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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 rackeslot8.osadl.org (updated Thu Sep 24, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27684702520,1sleep30-21swapper/323:00:213
2434939992825,1cyclictest0-21swapper/323:20:153
2434939992825,1cyclictest0-21swapper/322:20:003
2434939992824,1cyclictest0-21swapper/320:40:263
27963942250,3sleep22761511-21kworker/u16:1+ext4-rsv-conversion23:20:162
2434939992522,1cyclictest0-21swapper/323:30:263
2434939992320,1cyclictest0-21swapper/319:40:233
2434939992219,1cyclictest0-21swapper/322:10:203
2434939992219,1cyclictest0-21swapper/320:20:183
2434939992219,1cyclictest0-21swapper/320:00:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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