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2026-08-03 - 08:58
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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 rackeslot2.osadl.org (updated Mon Aug 03, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49768121700,2sleep30-21swapper/321:45:523
48801021000,2sleep1488016-21irqcore21:40:491
2941312270,1sleep00-21swapper/019:10:480
293265992616,1cyclictest0-21swapper/222:40:012
293265992516,1cyclictest0-21swapper/223:05:012
293265992421,1cyclictest0-21swapper/200:15:012
293264992417,6cyclictest724091-21fschecks_time00:20:461
293263992421,2cyclictest268-21systemd-journal22:15:000
5855502220,1sleep10-21swapper/122:45:501
29326599220,8cyclictest0-21swapper/200:40:012
293263992218,2cyclictest694024-21sh00:00:020
293263992214,7cyclictest471681-21unin-run21:30:010
293263992211,6cyclictest0-21swapper/023:00:020
293265992119,1cyclictest0-21swapper/200:30:012
293264992118,2cyclictest464447-21grep21:25:021
293263992118,2cyclictest737918-21apt-config00:30:020
293263992118,2cyclictest308076-21sh19:20:020
293263992114,6cyclictest730412-21latency_hist00:25:020
293263992112,7cyclictest0-21swapper/021:40:020
293263992111,5cyclictest0-21swapper/000:40:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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