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2026-07-30 - 06:39
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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 rack3slot6.osadl.org (updated Thu Jul 30, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276319911788,20cyclictest26-21ksoftirqd/122:35:131
3154521150,6chrt31546-21sendmail19:20:011
276319911282,19cyclictest26-21ksoftirqd/119:30:141
276319911078,20cyclictest26-21ksoftirqd/120:45:141
276269911076,19cyclictest14-21ksoftirqd/019:15:140
276319910628,63cyclictest0-21swapper/122:30:131
276269910465,30cyclictest14-21ksoftirqd/020:00:110
276269910412,79cyclictest0-21swapper/000:35:160
276269910213,77cyclictest0-21swapper/000:05:170
27631999957,31cyclictest26-21ksoftirqd/121:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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