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2026-05-11 - 19:29
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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 Mon May 11, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2278023828,0sleep20-21swapper/207:21:172
2269323727,0sleep10-21swapper/107:20:161
1596723725,0sleep00-21swapper/007:17:350
2213423626,0sleep30-21swapper/307:17:503
22946991212,0cyclictest3524-21snmpd11:25:380
339970,0migration/34110-21sh10:52:563
8305060,0irq/26-0000:00:4462-21sed12:07:522
339960,0migration/34802-21sh12:08:283
339960,0migration/332051-21sh10:13:233
339960,0migration/330791-21sh12:23:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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