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2026-06-29 - 16:15
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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 Mon Jun 29, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3080756991068,59cyclictest3237293-21awk11:55:000
3080760999274,18cyclictest0-21swapper/412:30:134
3080763998528,38cyclictest872-21mta-sts-daemon12:15:167
3080756997416,39cyclictest3167563-21ntpq09:45:200
3080756997153,18cyclictest0-21swapper/008:05:200
3080756997012,39cyclictest3224102-21/usr/sbin/munin11:30:130
308075699678,19cyclictest0-21swapper/010:25:130
3080756996628,19cyclictest3203999-21taskset10:51:280
3080757996463,1cyclictest3143791-21taskset09:02:401
3080759996323,39cyclictest52-21ksoftirqd/310:15:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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