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2025-11-12 - 22:33
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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 Wed Nov 12, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36353902239174,21sleep60-21swapper/607:05:216
36376362233176,19sleep50-21swapper/507:09:465
36353862229171,17sleep40-21swapper/407:05:194
36353782226167,18sleep70-21swapper/707:05:147
36375852219189,19sleep30-21swapper/307:09:043
36375922216187,18sleep10-21swapper/107:09:101
36354132214168,36sleep00-21swapper/007:05:390
36354062211184,17sleep20-21swapper/207:05:332
3637869993633,2cyclictest3692492-21fwupd08:48:266
363787299310,30cyclictest877-21runrttasks09:55:127
363786699310,29cyclictest3695566-21sh08:55:005
363786299310,30cyclictest3706364-21apt09:15:004
363786299300,29cyclictest0-21swapper/411:10:584
3637857993028,1cyclictest3807384-21idleruntime-cro12:20:013
3637857993028,1cyclictest0-21swapper/309:00:223
363785799300,2cyclictest3695571-21cron08:55:003
363785799300,29cyclictest0-21swapper/309:27:153
363785799300,29cyclictest0-21swapper/307:30:033
3637853993026,3cyclictest3788268-21sh11:45:012
363785399300,29cyclictest105-21kcompactd011:28:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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