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2026-05-23 - 04:53
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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 rack0slot2.osadl.org (updated Sat May 23, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132748525948,7sleep50-21swapper/519:02:355
1336917995754,2cyclictest1435640-21ntpq19:52:517
133661924737,7sleep40-21swapper/419:07:164
1336912994543,2cyclictest1919338-21kworker/u16:0+flush-8:000:07:525
13365382432,36sleep70-21swapper/719:06:067
628089400,33rtkit-daemon0-21swapper/619:03:256
1336910994038,2cyclictest1666027-21kworker/u16:0+events_unbound22:11:454
1336917993934,4cyclictest1861533-21latency_hist23:07:287
1336917993836,1cyclictest2053856-21sh00:25:397
1336917993836,1cyclictest1763033-21ssh22:24:247
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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