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2026-07-02 - 23:23
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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 Jul 02, 2026 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2535629814,39sleep00-21swapper/007:09:090
25575999577,13cyclictest26-21ksoftirqd/110:05:121
2504929518,31sleep10-21swapper/107:06:231
25575999071,11cyclictest26-21ksoftirqd/108:00:121
2557599896,71cyclictest1785-21apt-get10:35:121
25575998915,59cyclictest0-21swapper/108:20:141
2557599877,64cyclictest18153-21apt-get09:50:131
25575998712,60cyclictest0-21swapper/112:35:141
2557599866,65cyclictest720-21apt-get07:30:121
25575998616,58cyclictest0-21swapper/108:55:131
25575998614,60cyclictest0-21swapper/111:35:141
25575998614,57cyclictest0-21swapper/107:45:141
2557599856,67cyclictest10825-21apt-get09:30:131
2557599856,67cyclictest10825-21apt-get09:30:131
25575998521,50cyclictest0-21swapper/112:20:221
25575998518,53cyclictest0-21swapper/110:20:131
25575998514,59cyclictest0-21swapper/112:25:131
25575998513,56cyclictest0-21swapper/110:55:141
2557599847,61cyclictest29241-21apt-get08:50:131
25575998417,55cyclictest0-21swapper/110:40:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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