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2026-05-01 - 07:54
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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 01, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2455424332,0sleep20-21swapper/219:17:482
2459423425,0sleep10-21swapper/119:18:151
2483122928,0sleep00-21swapper/019:20:580
2449122723,0sleep30-21swapper/319:17:013
24948991010,0cyclictest26208-21awk19:21:480
249529976,0cyclictest0-21swapper/222:56:522
8305060,0irq/26-0000:00:22723-21if_eth1.219:41:483
8305060,0irq/26-0000:00:21577-21crond21:11:333
35160,0ktimersoftd/30-21swapper/300:05:043
339960,0migration/35440-21idleruntime-cro00:51:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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