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2026-08-30 - 21:06
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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 Aug 30, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3900677997517,39cyclictest1-21systemd12:00:015
3900677997416,39cyclictest3931867-21cpuspeed08:05:135
3900677997315,39cyclictest3976890-21ntpq09:25:225
3900677997113,39cyclictest1-21systemd09:00:015
3900677996426,19cyclictest3915958-21ntp_states07:35:225
390067799591,39cyclictest236199-21snmpd08:47:575
390067799590,59cyclictest0-21swapper/511:06:445
390067799590,58cyclictest0-21swapper/507:46:245
390067799590,19cyclictest0-21swapper/510:28:235
390067799580,0cyclictest0-21swapper/511:54:555
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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