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2025-11-12 - 13:11
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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 rack8slot4.osadl.org (updated Wed Nov 12, 2025 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19317672231169,48sleep40-21swapper/419:06:144
19319342222168,17sleep70-21swapper/719:08:347
19317982220167,41sleep60-21swapper/619:06:406
19297702220186,22sleep00-21swapper/019:05:220
19317732219168,17sleep10-21swapper/119:06:191
19297832218188,19sleep20-21swapper/219:05:322
19320162216187,18sleep50-21swapper/519:09:455
19318132211176,22sleep30-21swapper/319:06:533
193224299310,3cyclictest3820478-21systemd-journal20:10:004
1932233993128,2cyclictest2071337-21latency_hist23:25:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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