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2025-11-30 - 04:41
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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 rack8slot4.osadl.org (updated Sun Nov 30, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35705052230168,19sleep40-21swapper/419:07:374
35704942227173,18sleep50-21swapper/519:07:305
35706742225169,18sleep10-21swapper/119:09:591
35683952218165,18sleep20-21swapper/219:05:092
35704272216186,20sleep30-21swapper/319:06:313
35704242215186,18sleep00-21swapper/019:06:280
35706112214187,17sleep70-21swapper/719:09:087
35705832210173,23sleep60-21swapper/619:08:436
357087399362,33cyclictest0-21swapper/219:25:002
357087399330,2cyclictest0-21swapper/220:35:562
357087399330,2cyclictest0-21swapper/220:35:562
3570868993326,6cyclictest3672438-21sh22:15:010
357088799311,1cyclictest0-21swapper/520:45:005
357088799311,1cyclictest0-21swapper/520:45:005
357087399310,30cyclictest3820478-21systemd-journal22:10:012
357087399310,30cyclictest0-21swapper/223:40:592
357087399310,29cyclictest0-21swapper/223:45:012
3570868993128,2cyclictest3626594-21apt-get20:50:560
357086899310,2cyclictest3721475-21apt23:45:000
357089399300,29cyclictest3820478-21systemd-journal20:30:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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