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2026-05-09 - 17:19
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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 Sat May 09, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
631280997315,39cyclictest236199-21snmpd10:37:574
631275997213,19cyclictest0-21swapper/208:35:182
631286996951,18cyclictest0-21swapper/708:55:157
631280996911,39cyclictest807021-21sshd12:26:234
63128099688,20cyclictest695729-21ntpq09:05:214
63128299678,59cyclictest0-21swapper/512:20:125
631280996729,38cyclictest0-21swapper/411:22:054
63128099646,19cyclictest732991-21munin-run10:15:014
631280996119,19cyclictest708510-21systemd-run09:30:014
63127399600,20cyclictest0-21swapper/108:00:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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