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2026-03-25 - 21:57
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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 rack0slot3.osadl.org (updated Wed Mar 25, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21767152374354,14sleep150-21swapper/1507:06:157
21767152374354,14sleep150-21swapper/1507:06:157
21767452372351,14sleep60-21swapper/607:06:3912
21767452372351,14sleep60-21swapper/607:06:3912
21739702358311,13sleep120-21swapper/1207:05:084
21739702358311,13sleep120-21swapper/1207:05:084
21769632351332,13sleep140-21swapper/1407:09:446
21769632351332,13sleep140-21swapper/1407:09:446
21768782348327,14sleep70-21swapper/707:08:3213
21768782348327,14sleep70-21swapper/707:08:3213
21767082346326,13sleep80-21swapper/807:06:0814
21767082346326,13sleep80-21swapper/807:06:0814
21766962345325,14sleep130-21swapper/1307:05:575
21766962345325,14sleep130-21swapper/1307:05:575
21768802342322,13sleep90-21swapper/907:08:3415
21768802342322,13sleep90-21swapper/907:08:3415
21767032342323,13sleep30-21swapper/307:06:049
21767032342323,13sleep30-21swapper/307:06:039
21769292340320,14sleep50-21swapper/507:09:1911
21769292340320,14sleep50-21swapper/507:09:1811
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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