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2026-04-27 - 22:07
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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 Apr 27, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2936694991289,119cyclictest0-21swapper/710:10:157
293668799791,59cyclictest0-21swapper/210:10:152
2936689997718,58cyclictest2995011-21stty08:55:154
2936689997518,38cyclictest2984309-21fschecks_time08:35:144
2936689997415,59cyclictest236199-21snmpd07:10:364
2936689997415,39cyclictest236199-21snmpd11:59:534
2936689997336,18cyclictest362-21jbd2/sda2-809:17:484
2936689997213,58cyclictest0-21swapper/410:50:014
2936689997113,39cyclictest2965289-21basename08:00:154
2936689996951,18cyclictest0-21swapper/412:00:204
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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