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2026-06-06 - 09:26
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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 Sat Jun 06, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29404372228166,19sleep20-21swapper/219:08:032
29405602222191,20sleep40-21swapper/419:09:504
29405542211182,19sleep70-21swapper/719:09:457
29404582208177,20sleep50-21swapper/519:08:225
29403802208180,18sleep10-21swapper/119:07:131
29403852206178,18sleep60-21swapper/619:07:186
29404262205173,22sleep00-21swapper/019:07:530
29402902205177,18sleep30-21swapper/319:05:553
294079299340,32cyclictest279850-21systemd-journal21:00:016
2940790993328,4cyclictest279850-21systemd-journal22:15:015
2940786993331,1cyclictest290-21plymouthd20:40:014
294077899330,32cyclictest3024941-21cron21:40:010
294079099320,31cyclictest2977602-21unix_chkpwd20:15:005
2940795993126,4cyclictest3108674-21900:10:017
2940784993128,3cyclictest2991527-21cron20:40:013
2940782993131,0cyclictest0-21swapper/223:30:072
2940779993127,3cyclictest279850-21systemd-journal21:20:001
294079599300,29cyclictest2980383-21cron20:20:017
294079599300,29cyclictest2975262-21apt-get20:10:087
294079599300,29cyclictest2952568-21basename19:30:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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