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2026-04-07 - 07:28
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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 rackeslot5.osadl.org (updated Tue Apr 07, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2389299321,18cyclictest0-21swapper/223:38:032
2389299310,18cyclictest0-21swapper/222:08:282
23892993028,1cyclictest7010-21sh23:10:012
2389699290,28cyclictest0-21swapper/300:00:133
23892992928,1cyclictest25751-21apt-get22:40:112
2389099290,28cyclictest25204-21apt-get21:30:111
2389099290,28cyclictest0-21swapper/121:25:121
2389099290,28cyclictest0-21swapper/119:15:111
23889992928,1cyclictest655-21apt-get00:05:120
2388999290,28cyclictest0-21swapper/022:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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