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2026-06-27 - 18:23
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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 Jun 27, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3209524738,0sleep30-21swapper/307:22:253
3206224435,0sleep10-21swapper/107:22:031
2646723724,0sleep00-21swapper/007:21:300
3211123425,0sleep20-21swapper/207:22:362
324949999,0cyclictest3524-21snmpd08:28:560
324949988,0cyclictest0-21swapper/009:27:420
8305060,0irq/26-0000:00:14822-21crond08:21:152
339960,0migration/39501-21sh11:32:493
339960,0migration/38213-21sh10:01:183
339960,0migration/37478-21sh12:27:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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