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2026-06-27 - 06:57
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Sat Jun 27, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2581327999333,59cyclictest2597376-21sshd19:37:213
2581327999113,38cyclictest2251730-21kworker/u32:4+events_unbound22:40:163
2581327999088,1cyclictest0-21swapper/323:40:143
258132799899,59cyclictest2594751-21taskset19:33:413
2581327998827,59cyclictest2583840-21taskset19:13:493
2581327997638,19cyclictest2591087-21/usr/sbin/munin19:25:213
2581327997617,39cyclictest2672648-21munin-run21:55:013
2581327997617,39cyclictest2659799-21/usr/sbin/munin21:30:173
2581327997517,39cyclictest1086-21runrttasks23:12:153
2581327997234,19cyclictest2748816-21ntpq00:10:193
2581327997012,39cyclictest2706956-21/usr/sbin/munin22:55:133
2581327996950,19cyclictest0-21swapper/319:41:343
2581327996929,39cyclictest0-21swapper/323:18:593
2581327996911,39cyclictest2752802-21munin-run00:20:013
2581327996830,38cyclictest0-21swapper/321:00:033
2581327996830,38cyclictest0-21swapper/319:55:023
258132799679,19cyclictest0-21swapper/322:12:513
2581327996729,19cyclictest2638636-21taskset20:53:053
2581327996223,19cyclictest0-21swapper/321:37:473
258132799600,59cyclictest0-21swapper/321:40:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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