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2026-06-16 - 20:40
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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 Tue Jun 16, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
169811121710,3sleep30-21swapper/307:10:163
1697336993027,2cyclictest1809016-21latency_hist08:40:011
1697336993023,2cyclictest67250irq/126-eno109:20:011
1697336992613,3cyclictest274-21systemd-journal10:35:031
1697335992517,7cyclictest1246-21mta-sts-daemon11:50:190
1697336992416,3cyclictest2025847-21kthreadcore11:10:201
1697336992320,2cyclictest2081979-21apt-config11:50:011
1697336992320,2cyclictest1926869-21cron10:05:011
1697336992315,3cyclictest1864440-21kthreadcore09:20:231
169733699229,3cyclictest0-21swapper/109:55:131
1697336992219,2cyclictest0-21swapper/111:35:011
1697336992213,2cyclictest67250irq/126-eno109:45:501
1697336992212,5cyclictest1778659-21latency_hist08:15:001
1697336992211,6cyclictest1912157-21munin-run09:55:001
1697336992211,3cyclictest0-21swapper/110:10:031
1697336992210,7cyclictest0-21swapper/111:05:011
1697335992214,4cyclictest2127431-21tail12:20:160
1697335992210,7cyclictest0-21swapper/010:25:270
169733699217,5cyclictest1754339-21perf07:55:001
1697336992117,3cyclictest1731597-21kthreadcore07:35:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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