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2026-04-26 - 06:59
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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 Sun Apr 26, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3167369999515,59cyclictest3343920-21/usr/sbin/munin00:30:140
3167369998445,38cyclictest0-21swapper/020:35:220
316737599780,2cyclictest0-21swapper/621:15:166
3167369997517,19cyclictest0-21swapper/019:44:580
3167369997415,59cyclictest3255355-21cron21:50:000
3167369997233,38cyclictest874-21mta-sts-daemon19:34:240
3167376997152,19cyclictest0-21swapper/723:30:177
3167369997012,39cyclictest3281341-21latency22:35:180
3167369997012,39cyclictest3281341-21latency22:35:180
3167369996324,39cyclictest0-21swapper/000:14:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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