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2026-04-29 - 06:45
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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
Characteristics of the 20 highest latencies:
System rackcslot4.osadl.org (updated Wed Apr 29, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41495692324281,29sleep10-21swapper/119:08:111
41495872323281,28sleep00-21swapper/019:08:230
179699680,4rtkit-daemon1795-21rtkit-daemon00:05:110
179699630,6rtkit-daemon78293-21/usr/sbin/munin22:40:201
415149299614,30cyclictest66404-21apt-get22:25:141
415149299582,37cyclictest58784-21apt-get22:15:131
415149299582,37cyclictest39926-21apt-get21:50:161
4151488995814,10cyclictest96-21kswapd022:45:010
415149299572,30cyclictest93112-21apt-get23:00:121
4151488995615,10cyclictest1-21systemd23:10:010
4151488995612,11cyclictest108059-21sh23:20:000
179699560,4rtkit-daemon1795-21rtkit-daemon00:31:060
179699560,3rtkit-daemon0-21swapper/120:09:271
415149299552,29cyclictest142123-21apt-get00:05:131
4151488995515,9cyclictest1-21systemd22:35:010
179699550,6rtkit-daemon1795-21rtkit-daemon23:05:131
179699550,3rtkit-daemon0-21swapper/123:51:341
415149299542,36cyclictest164067-21apt-get00:35:111
415149299542,24cyclictest2462-21apt-get20:55:151
4151488995412,11cyclictest4171957-21systemd-detect-19:51:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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