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2026-05-12 - 19:44
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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 Tue May 12, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1178327572,0sleep10-21swapper/107:20:561
11995997171,0cyclictest24974-21kworker/0:108:41:510
12004996464,0cyclictest305350irq/27-eth108:41:512
1180026059,0sleep20-21swapper/207:21:052
1168125251,0sleep00-21swapper/007:19:470
1155223026,0sleep30-21swapper/307:18:173
119959970,0cyclictest0-21swapper/012:22:490
8305060,0irq/26-0000:00:31683-21df07:57:443
339960,0migration/37262-21sh12:49:433
339960,0migration/328232-21sh12:25:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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