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2026-06-02 - 10:36
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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 rack1slot8.osadl.org (updated Tue Jun 02, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101072979959,13sleep10-21swapper/119:08:411
101772618595,16sleep00-21swapper/019:09:230
10273995212,456cyclictest11507-21grep19:10:261
10273994584,435cyclictest0-21swapper/121:18:221
1027299401334,32cyclictest11500-21sshd19:10:250
1027299379302,69cyclictest0-21swapper/021:18:220
10273999716,65cyclictest0-21swapper/122:40:591
10272999477,12cyclictest0-21swapper/000:39:000
10273999214,60cyclictest0-21swapper/122:30:591
10273998914,56cyclictest0-21swapper/123:04:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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