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2026-08-23 - 01:24
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Sat Aug 22, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3530621999416,59cyclictest3696280-21taskset12:08:564
3530621998930,19cyclictest0-21swapper/408:10:584
3530621997436,19cyclictest3648959-21ntpq10:40:204
353062199677,39cyclictest3542874-21if_eno307:30:164
353062199668,39cyclictest3629629-21sed10:05:184
353062199667,59cyclictest3691774-21expr12:00:144
3530621996628,18cyclictest0-21swapper/411:58:054
353062199657,39cyclictest3562322-21if_enxbe3af2b6008:05:184
3530621996258,3cyclictest601ktimers/411:10:124
353062199613,19cyclictest0-21swapper/408:49:364
3530620996143,18cyclictest0-21swapper/309:00:153
353062199602,21cyclictest0-21swapper/411:51:164
353062199590,40cyclictest3658107-21taskset10:59:324
3530623995814,39cyclictest0-21swapper/612:10:166
3530621995737,19cyclictest875-21mta-sts-daemon07:15:024
3530621995715,40cyclictest3614682-21taskset09:40:044
3530621995715,40cyclictest3614682-21taskset09:40:044
3530620995717,20cyclictest191rcu_preempt07:55:163
3530621995617,38cyclictest870-21mta-sts-daemon10:15:164
353062199560,37cyclictest3560037-21ld08:00:204
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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