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2026-03-20 - 21:30
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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 Mar 20, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271660,0ktimersoftd/27347-21perf07:17:572
1334024939,0sleep10-21swapper/107:13:271
1424523329,0sleep00-21swapper/007:15:420
1414222824,0sleep30-21swapper/307:14:293
145289999,0cyclictest432-21ssh09:19:040
339960,0migration/34832-21irqcore10:38:233
339960,0migration/3314-21sh11:30:343
339960,0migration/322894-21needreboot12:38:263
339960,0migration/321279-21sh09:49:173
339960,0migration/315247-21sh11:19:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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