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2026-03-25 - 11:14
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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 Wed Mar 25, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3009924738,0sleep20-21swapper/219:14:012
3022923727,0sleep30-21swapper/319:15:343
3012923322,0sleep00-21swapper/019:14:230
3027023123,0sleep10-21swapper/119:16:001
339960,0migration/325490-21sh23:37:343
339960,0migration/31119-21sh23:40:593
329960,0watchdog/33020-21sh21:32:173
29805060,0irq/28-eth0-rx-7043-21tr22:48:483
8305050,0irq/26-0000:00:16560-21latency_hist19:53:292
339950,0migration/39538-21latency_hist20:33:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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