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2026-06-10 - 20:22
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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 10, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
337789699770,58cyclictest3489082-21gcc10:30:197
3377896997618,39cyclictest3432014-21sed08:45:237
3377896997414,59cyclictest3472178-21hddtemp_smartct10:00:157
3377896997214,39cyclictest3443057-21systemd-journal08:45:017
3377896997213,40cyclictest3520195-21taskset11:26:577
3377896996830,19cyclictest3494083-21if_eno310:40:157
337789699646,39cyclictest3462770-21apt-config09:45:017
337789699590,59cyclictest3393992-21taskset07:38:117
337789699590,39cyclictest0-21swapper/707:20:137
337789699580,39cyclictest3534702-21munin-run11:55:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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