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2025-10-30 - 18:40
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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 Oct 30, 2025 12:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811410999214,59cyclictest855410-21ntpq08:25:205
811410998020,39cyclictest872-21mta-sts-daemon10:45:125
81141099780,58cyclictest903630-21ntpq09:50:225
811410997738,39cyclictest6950ktimers/510:41:325
811410997636,39cyclictest939503-21head10:55:145
811410997315,39cyclictest937401-21ntp_states10:50:205
811410997213,19cyclictest0-21swapper/510:25:085
811410997114,38cyclictest691ktimers/512:02:375
811410996911,0cyclictest0-21swapper/512:15:025
81141099674,40cyclictest925771-21taskset10:30:185
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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