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2026-04-08 - 07:21
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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 Wed Apr 08, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308509914212,117cyclictest0-21swapper/023:30:120
308509914048,31cyclictest14-21ksoftirqd/019:10:130
308549913754,73cyclictest26-21ksoftirqd/120:10:121
308509912664,20cyclictest0-21swapper/022:15:100
308509912539,35cyclictest0-21swapper/022:05:130
30854991217,31cyclictest29209-21kworker/1:022:20:121
308549912091,18cyclictest26-21ksoftirqd/122:25:131
308549910859,36cyclictest26-21ksoftirqd/123:05:141
308549910658,36cyclictest26-21ksoftirqd/100:00:151
308549910557,35cyclictest26-21ksoftirqd/121:10:131
308549910458,33cyclictest26-21ksoftirqd/123:20:121
308549910457,33cyclictest26-21ksoftirqd/123:45:121
308549910443,49cyclictest26-21ksoftirqd/122:35:111
308549910213,67cyclictest0-21swapper/120:20:131
308549910118,24cyclictest0-21swapper/120:00:231
308549910111,70cyclictest0-21swapper/119:30:121
308509910148,37cyclictest14-21ksoftirqd/000:15:120
308509910111,77cyclictest0-21swapper/021:00:220
308549910014,64cyclictest0-21swapper/120:05:141
30854999914,65cyclictest0-21swapper/119:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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