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2026-09-22 - 10:00
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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 Tue Sep 22, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
309862966,76sleep031053-21/usr/sbin/munin19:05:190
3192828531,43sleep10-21swapper/119:07:071
32387997629,41cyclictest14-21ksoftirqd/000:00:020
3238799756,58cyclictest10817-21apt-get21:10:160
32394997329,15cyclictest26-21ksoftirqd/120:05:011
32387997354,13cyclictest0-21swapper/019:15:110
32387997338,17cyclictest14-21ksoftirqd/021:00:270
32387997335,31cyclictest14-21ksoftirqd/020:20:010
32394997236,31cyclictest26-21ksoftirqd/100:10:321
32394997132,9cyclictest26-21ksoftirqd/119:45:311
32387997137,28cyclictest14-21ksoftirqd/000:10:350
32387997034,31cyclictest14-21ksoftirqd/020:55:310
32394996843,9cyclictest26-21ksoftirqd/123:55:151
32387996832,9cyclictest14-21ksoftirqd/023:50:210
32394996734,29cyclictest26-21ksoftirqd/120:50:351
32387996743,19cyclictest14-21ksoftirqd/022:26:050
32387996731,9cyclictest14-21ksoftirqd/023:35:300
32387996731,9cyclictest14-21ksoftirqd/023:35:300
32387996723,8cyclictest14-21ksoftirqd/000:00:320
51502660,6sleep10-21swapper/122:25:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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