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2026-07-17 - 13:34
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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 Fri Jul 17, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1819524737,0sleep10-21swapper/107:26:441
1811123626,0sleep30-21swapper/307:25:463
1139823026,0sleep00-21swapper/007:22:590
1797622723,0sleep20-21swapper/207:24:132
8305070,0irq/26-0000:00:7569-21grep11:02:543
8305060,0irq/26-0000:00:7289-21unixbench-2d08:23:233
339960,0migration/36580-21sh11:38:033
339960,0migration/33949-21sh10:05:553
339960,0migration/329779-21sh10:55:443
339960,0migration/326452-21sh09:59:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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