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2026-07-17 - 16:17
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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 Fri Jul 17, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9682642239181,47sleep10-21swapper/107:07:001
9682202225168,47sleep20-21swapper/207:06:202
9681952220189,20sleep60-21swapper/607:06:006
9683962218189,20sleep00-21swapper/007:08:520
9684292209181,18sleep40-21swapper/407:09:204
9683222208176,21sleep30-21swapper/307:07:513
9682702207180,17sleep70-21swapper/707:07:067
9681942205178,18sleep50-21swapper/507:05:595
969577995654,1cyclictest0-21swapper/707:25:017
969568994848,0cyclictest0-21swapper/411:49:564
96955799340,32cyclictest1117375-21latency_hist11:35:010
969577993327,5cyclictest0-21swapper/709:44:587
96956599330,32cyclictest1106190-21latency11:15:023
96956599330,32cyclictest1106190-21latency11:15:013
96956599330,31cyclictest1092718-21/usr/sbin/munin10:50:043
96956399330,32cyclictest279850-21systemd-journal07:50:012
96957499320,31cyclictest1114409-21cat11:30:016
969569993227,4cyclictest1091880-21sqv10:50:015
96956999320,31cyclictest1099363-21apt-get11:04:575
969568993227,4cyclictest1117355-21cron11:35:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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