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2026-05-05 - 01:36
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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 rackbslot7.osadl.org (updated Mon May 04, 2026 12:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2629521610,19sleep30-21swapper/306:57:403
26137212013,76sleep126224-21grep06:57:391
26228211611,72sleep226294-21/usr/sbin/munin06:57:402
26775991153,31cyclictest27565-21apt-get11:32:101
267689910880,19cyclictest2374-21systemd-journal07:01:550
267759910255,40cyclictest544-21cron07:08:511
26775999432,49cyclictest0-21swapper/108:01:541
26775999257,25cyclictest8659-21sh10:07:131
2677599904,39cyclictest22486-21grep08:26:541
26768999061,21cyclictest24157-21latency_hist08:31:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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