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2026-05-06 - 03:45
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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 May 06, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6649822214184,20sleep00-21swapper/019:09:270
6649982213185,19sleep70-21swapper/719:09:427
6647742213185,19sleep50-21swapper/519:06:255
6626642213184,18sleep60-21swapper/619:05:066
6648942211182,19sleep40-21swapper/419:08:104
6647702210181,19sleep10-21swapper/119:06:221
6647242210181,19sleep30-21swapper/319:05:443
6622512209181,19sleep20-21swapper/219:05:022
66523699350,31cyclictest0-21swapper/319:25:013
66523099350,34cyclictest0-21swapper/100:40:011
66522899340,33cyclictest374-21systemd-journal19:25:020
66523999330,30cyclictest671853-21apt-get19:20:154
66523499330,29cyclictest0-21swapper/220:45:152
665230993328,4cyclictest674633-21apt-get19:25:151
66522899330,32cyclictest0-21swapper/020:35:010
66522899330,1cyclictest0-21swapper/020:40:000
665240993227,4cyclictest827565-21cron00:00:015
66523999320,31cyclictest0-21swapper/419:10:164
66523699320,4cyclictest808086-21awk23:25:013
66522899320,0cyclictest0-21swapper/000:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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