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2026-08-01 - 05:13
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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 Aug 01, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34046742230174,46sleep50-21swapper/519:06:535
34047012227166,20sleep30-21swapper/319:07:173
34048592213184,19sleep40-21swapper/419:09:344
34048712212184,18sleep70-21swapper/719:09:457
34046512211182,19sleep00-21swapper/019:06:320
34047442210183,18sleep10-21swapper/119:07:541
34047962209181,18sleep60-21swapper/619:08:396
34048662208178,20sleep20-21swapper/219:09:402
340642999360,3cyclictest3509812-21/usr/sbin/munin22:15:016
340642599340,33cyclictest0-21swapper/522:44:515
3406416993426,2cyclictest279850-21systemd-journal22:20:011
340641899330,31cyclictest3443351-21cat20:15:012
3406416993327,1cyclictest0-21swapper/122:35:011
340641699330,1cyclictest0-21swapper/122:24:521
3406431993229,2cyclictest3509758-21cron22:15:017
340642999320,1cyclictest290-21plymouthd22:40:016
3406425993227,4cyclictest3454170-21awk20:35:015
3406416993227,0cyclictest0-21swapper/123:49:531
340641699320,28cyclictest1-21systemd00:00:011
3406429993127,4cyclictest0-21swapper/622:09:526
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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