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2026-04-03 - 23:45
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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 Fri Apr 03, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171289911281,21cyclictest26-21ksoftirqd/109:45:131
16960211230,26sleep10-21swapper/107:09:431
171289910470,20cyclictest26-21ksoftirqd/108:00:141
171289910270,21cyclictest26-21ksoftirqd/108:45:111
171289910268,19cyclictest26-21ksoftirqd/111:25:141
171289910068,20cyclictest26-21ksoftirqd/108:25:131
171289910068,20cyclictest26-21ksoftirqd/108:25:131
17128999761,22cyclictest26-21ksoftirqd/111:00:261
17128999761,22cyclictest26-21ksoftirqd/109:00:151
155022960,5chrt36-21kcompactd008:35:161
17128999358,23cyclictest26-21ksoftirqd/112:05:141
17128999257,21cyclictest26-21ksoftirqd/107:25:121
17128999254,24cyclictest26-21ksoftirqd/108:10:141
17128999245,34cyclictest503-21snmpd11:40:161
17128999165,15cyclictest26-21ksoftirqd/109:50:231
17128999156,22cyclictest26-21ksoftirqd/107:20:121
17128999132,24cyclictest0-21swapper/111:35:111
17128999132,24cyclictest0-21swapper/111:35:111
17128999063,17cyclictest26-21ksoftirqd/108:55:131
17128999051,26cyclictest26-21ksoftirqd/110:05:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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