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2026-05-09 - 00:45
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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 May 08, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2967824126,0sleep00-21swapper/007:18:370
2986423526,0sleep30-21swapper/307:20:493
2991723424,0sleep10-21swapper/107:21:271
2981823425,0sleep20-21swapper/207:20:202
300509988,0cyclictest25930-21sensors08:22:321
300499988,0cyclictest0-21swapper/009:22:370
339970,0migration/327917-21munin-node08:27:253
300519976,0cyclictest15760-21ssh11:17:252
8305060,0irq/26-0000:00:8642-21awk07:52:103
339960,0migration/332503-21sh11:42:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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