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2026-06-05 - 15:49
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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 rackcslot6.osadl.org (updated Fri Jun 05, 2026 12:46:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221960799380379,1cyclictest2352504-21kworker/7:011:48:027
221960799380379,1cyclictest2322683-21kworker/7:210:50:027
221960799380379,1cyclictest2283469-21kworker/7:109:01:027
221960799380379,1cyclictest2238228-21kworker/7:008:35:027
221960799380378,1cyclictest2238228-21kworker/7:008:06:027
2219607993800,379cyclictest0-21swapper/712:03:027
221958699380379,1cyclictest2457579-21kworker/4:207:45:024
2219559993800,1cyclictest0-21swapper/112:11:021
2219559993800,1cyclictest0-21swapper/112:11:011
221960799379378,1cyclictest2406863-21kworker/7:212:25:027
221960799379378,1cyclictest2355592-21kworker/7:111:22:027
221960799379378,1cyclictest2310382-21kworker/7:110:02:027
221960799379378,1cyclictest2295543-21kworker/7:009:21:017
221960799379378,1cyclictest0-21swapper/709:16:027
221960799379377,1cyclictest2355592-21kworker/7:111:11:027
221960799379377,1cyclictest2238228-21kworker/7:008:44:027
2219607993790,379cyclictest0-21swapper/707:46:027
221955499379378,1cyclictest2382687-21kworker/0:012:35:020
2219554993790,379cyclictest0-21swapper/007:45:020
221960799378377,1cyclictest2310382-21kworker/7:110:35:027
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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