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2026-04-30 - 15:00
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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 Thu Apr 30, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3815460997656,19cyclictest691ktimers/523:20:155
3815459997133,38cyclictest3831928-21kworker/4:219:55:134
3815458995818,38cyclictest3831947-21sed19:40:023
3815458995738,19cyclictest511ktimers/323:08:503
3815458995719,38cyclictest0-21swapper/322:54:463
3815458995719,19cyclictest511ktimers/320:00:043
3815458995616,39cyclictest3951472-21ntpq00:00:193
3815458995615,39cyclictest1086-21runrttasks21:37:133
3815458995514,39cyclictest236199-21snmpd00:20:473
3815458995454,0cyclictest3852657-21cat20:15:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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