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2026-06-17 - 20:50
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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 Jun 17, 2026 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12809612227169,47sleep10-21swapper/107:06:251
12812012225165,18sleep70-21swapper/707:09:537
12812112221193,18sleep60-21swapper/607:10:006
12811142220160,19sleep30-21swapper/307:08:363
12809562219158,19sleep50-21swapper/507:06:215
12810522210181,19sleep00-21swapper/007:07:440
12809462206177,19sleep40-21swapper/407:06:114
12788502206178,18sleep20-21swapper/207:05:052
128142799370,32cyclictest1362911-21unix_chkpwd09:35:011
1281434993526,4cyclictest0-21swapper/409:45:014
128143499340,28cyclictest0-21swapper/409:55:044
128143499330,32cyclictest0-21swapper/410:00:044
128143099330,28cyclictest0-21swapper/311:50:053
128143499320,1cyclictest1394043-21apt-get10:30:054
128143499320,1cyclictest0-21swapper/412:00:024
1281430993228,3cyclictest0-21swapper/311:55:063
1281430993226,3cyclictest0-21swapper/311:25:013
128143099320,1cyclictest1368572-21appstreamcli09:45:013
128142899320,4cyclictest1466060-21cron12:40:012
128142899320,31cyclictest279850-21systemd-journal07:50:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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