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2026-08-05 - 10:14
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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 rackbslot7.osadl.org (updated Tue Aug 04, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5705210412,63sleep25732-21/usr/sbin/munin06:51:182
5705210412,63sleep25732-21/usr/sbin/munin06:51:182
308402980,28sleep3451rcuc/312:05:353
6635999712,57cyclictest39-21ksoftirqd/208:37:152
6635999269,14cyclictest30344-21idleruntime-cro11:10:362
513229013,32sleep10-21swapper/106:50:481
513229013,32sleep10-21swapper/106:50:481
6630998972,11cyclictest29750-21fschecks_count09:20:591
6635998820,36cyclictest39-21ksoftirqd/207:14:152
6626998843,32cyclictest5675-21modprobe08:30:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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