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2026-04-25 - 02:20
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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 rack3slot6.osadl.org (updated Sat Apr 25, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6139910279,11cyclictest14-21ksoftirqd/021:35:140
6139910174,14cyclictest14-21ksoftirqd/020:20:100
613999970,19cyclictest14-21ksoftirqd/023:10:120
613999665,17cyclictest14-21ksoftirqd/019:10:120
613999566,19cyclictest14-21ksoftirqd/021:20:120
613999464,16cyclictest14-21ksoftirqd/022:35:150
613999369,15cyclictest14-21ksoftirqd/019:25:120
613999362,18cyclictest0-21swapper/019:30:110
613999360,19cyclictest14-21ksoftirqd/022:00:240
613999165,17cyclictest14-21ksoftirqd/023:00:230
613999165,17cyclictest14-21ksoftirqd/023:00:230
613999157,19cyclictest14-21ksoftirqd/023:30:120
40229137,43sleep10-21swapper/119:09:301
613998860,18cyclictest14-21ksoftirqd/000:35:210
613998835,46cyclictest24271-21/usr/sbin/munin23:15:230
613998835,46cyclictest24271-21/usr/sbin/munin23:15:230
613998759,18cyclictest14-21ksoftirqd/019:20:140
613998756,19cyclictest14-21ksoftirqd/023:45:140
613998755,21cyclictest14-21ksoftirqd/020:45:140
613998659,18cyclictest14-21ksoftirqd/020:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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