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2026-04-07 - 09:17
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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 rackbslot7.osadl.org (updated Tue Apr 07, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163949910251,43cyclictest0-21swapper/219:14:032
16394991023,73cyclictest3460-21apt-get22:18:572
16394991023,73cyclictest3460-21apt-get22:18:572
163769910084,10cyclictest21841-21ssh21:54:250
1639499973,80cyclictest21642-21apt-get21:54:022
16394999727,42cyclictest17606-21sh22:40:582
16394999642,47cyclictest11138-21open_files20:24:122
16386999637,7cyclictest0-21swapper/121:23:591
16386999637,7cyclictest0-21swapper/121:23:591
1578629610,57sleep015870-21sed18:59:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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