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2026-06-03 - 20:30
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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 10 highest latencies:
System rackfslot7.osadl.org (updated Wed Jun 03, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
388743299133131,1cyclictest0-21swapper/309:05:113
3887428999045,42cyclictest3957250-21cat09:15:191
3887428997517,39cyclictest3924372-21missed_timers08:15:191
3887428997333,39cyclictest3975240-21munin-run09:50:001
388743699691,67cyclictest0-21swapper/709:05:127
3887428996931,19cyclictest0-21swapper/107:50:491
3887428996929,39cyclictest0-21swapper/107:48:101
3887428996911,19cyclictest0-21swapper/108:54:561
3887428996729,19cyclictest0-21swapper/109:00:181
388742899668,39cyclictest3888271-21df_inode07:10:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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