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2026-04-23 - 10:59
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Thu Apr 23, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136092850,5sleep113611-21basename21:45:261
2229727819,50sleep00-21swapper/019:06:460
2168927735,25sleep10-21swapper/119:05:221
22777997658,11cyclictest26-21ksoftirqd/120:05:131
22777997535,35cyclictest26-21ksoftirqd/100:38:521
22772997423,26cyclictest0-21swapper/022:05:120
22777997337,23cyclictest0-21swapper/123:05:141
22777997336,27cyclictest12297-21apt-get20:10:141
22777997336,27cyclictest12297-21apt-get20:10:141
22777997238,25cyclictest12963-21apt-get23:15:131
22777997235,25cyclictest21762-21apt-get23:40:161
2277299726,14cyclictest0-21swapper/000:10:140
22777997135,22cyclictest26884-21apt-get19:20:121
22777997134,25cyclictest3681-21apt-get00:20:151
22777997041,14cyclictest27284-21apt-get23:55:121
22777997039,14cyclictest25122-21apt-get19:15:131
22777997039,14cyclictest25122-21apt-get19:15:131
22777997036,23cyclictest0-21swapper/123:20:141
22777997035,25cyclictest31545-21apt-get21:05:121
22777997035,21cyclictest7003-21apt-get19:55:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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