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2026-05-22 - 10:44
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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 Fri May 22, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7708709911010,99cyclictest0-21swapper/321:30:153
770870999618,19cyclictest873-21mta-sts-daemon22:57:293
77087099960,57cyclictest779173-21taskset19:24:383
77087099790,60cyclictest870246-21/usr/sbin/munin22:10:173
770870997314,39cyclictest788118-21/usr/sbin/munin19:40:153
770870997214,39cyclictest922360-21/usr/sbin/munin23:45:163
770870997214,39cyclictest794752-21ntpq19:50:173
770870997033,18cyclictest775895-21timerwakeupswit19:15:233
770870997032,38cyclictest0-21swapper/322:31:363
77086899700,69cyclictest0-21swapper/119:35:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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