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2026-04-30 - 22:14
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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 Thu Apr 30, 2026 12:46:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
169246899381379,1cyclictest1775378-21kworker/7:009:46:027
1692468993810,380cyclictest0-21swapper/708:22:027
1692468993810,380cyclictest0-21swapper/708:11:027
1692468993810,380cyclictest0-21swapper/708:00:027
169246899380379,1cyclictest1797688-21kworker/7:311:48:037
169246899380379,1cyclictest1797688-21kworker/7:311:37:027
169246899380379,1cyclictest1797688-21kworker/7:310:11:027
169246899380379,1cyclictest1775378-21kworker/7:010:00:027
169246899380379,1cyclictest1775378-21kworker/7:009:32:027
169246899380379,1cyclictest1691547-21kworker/7:007:56:027
169246899380379,1cyclictest1691547-21kworker/7:007:36:027
169246899380379,1cyclictest1691547-21kworker/7:007:33:027
169246899380379,1cyclictest1691547-21kworker/7:007:26:037
169246899380378,1cyclictest1747201-21kworker/7:109:08:027
1692468993800,379cyclictest0-21swapper/712:16:037
1692468993800,379cyclictest0-21swapper/708:41:027
1692468993800,379cyclictest0-21swapper/707:44:027
1692468993800,379cyclictest0-21swapper/707:44:027
1692468993800,1cyclictest0-21swapper/708:38:027
169246899379378,1cyclictest1853542-21kworker/7:112:03:037
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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