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2026-06-24 - 21:54
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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 rackfslot7.osadl.org (updated Wed Jun 24, 2026 12:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1983689997335,38cyclictest511ktimers/311:23:033
1983689996345,18cyclictest0-21swapper/308:04:163
1983689995858,0cyclictest2102050-21/usr/sbin/munin10:45:013
1983689995840,18cyclictest0-21swapper/308:10:163
1983689995718,19cyclictest2049803-21sed09:10:013
1983689995618,19cyclictest2030090-21chrt08:32:513
1983689995617,2cyclictest876-21mta-sts-daemon10:01:363
1983689995617,18cyclictest2103517-21ntp_states10:45:203
1983689995517,19cyclictest2096995-21diskstats10:35:143
1983689995516,19cyclictest2106974-21chrt10:51:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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