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2025-11-22 - 03:48
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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 Sat Nov 22, 2025 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
695523929,0sleep30-21swapper/318:19:473
672523727,0sleep20-21swapper/218:17:102
658723627,0sleep10-21swapper/118:15:331
690223423,0sleep00-21swapper/018:19:120
329980,0watchdog/30-21swapper/322:46:383
329970,0watchdog/30-21swapper/318:25:153
29925070,0irq/32-eth0-rx-18291-21latency_hist22:29:543
29925070,0irq/32-eth0-rx-0-21swapper/322:30:073
149970,0migration/012867-21sh23:01:090
8315060,0irq/26-0000:00:4970-21perf21:44:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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