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2026-07-21 - 19:29
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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 Jul 21, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2767828382,0sleep20-21swapper/207:24:022
28114996060,0cyclictest83050irq/26-0000:00:09:52:312
2772423223,0sleep10-21swapper/107:24:331
2797823026,0sleep00-21swapper/007:27:280
2793222925,0sleep30-21swapper/307:26:553
339970,0migration/311373-21sh12:37:383
8305060,0irq/26-0000:00:31467-21perl08:58:273
8305060,0irq/26-0000:00:31351-21crond10:18:142
8305060,0irq/26-0000:00:21160-21python08:03:373
8305060,0irq/26-0000:00:17666-21tr09:08:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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