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2025-12-24 - 11:01
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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 Wed Dec 24, 2025 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140126998527,19cyclictest0-21swapper/523:31:285
140126997717,39cyclictest267973-21sh22:55:005
140126997638,19cyclictest691ktimers/522:31:065
140126997618,39cyclictest284851-21cut23:25:005
140126997414,19cyclictest0-21swapper/520:42:325
140126997333,19cyclictest0-21swapper/520:58:375
140126997333,19cyclictest0-21swapper/519:36:575
140126997333,0cyclictest0-21swapper/519:33:085
140126997314,19cyclictest0-21swapper/521:23:295
140126997234,19cyclictest322801-21irqstats00:30:175
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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