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2026-06-16 - 10:51
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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 rack1slot2.osadl.org (updated Tue Jun 16, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1925824635,0sleep00-21swapper/019:23:400
1901723828,0sleep30-21swapper/319:20:513
1902023525,0sleep10-21swapper/119:20:531
1907723324,0sleep20-21swapper/219:21:342
194779988,0cyclictest3524-21snmpd22:15:290
339960,0migration/38660-21sh23:59:433
339960,0migration/3718-21sh00:10:523
339960,0migration/35038-21sh23:36:103
339960,0migration/313357-21sh22:26:253
339960,0migration/312383-21sh23:23:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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