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2026-05-19 - 08:02
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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 rack3slot6.osadl.org (updated Tue May 19, 2026 00:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20912210131,24sleep10-21swapper/119:09:311
2092329714,38sleep00-21swapper/019:09:380
21113997741,25cyclictest20567-21apt-get22:10:131
21113997640,25cyclictest17041-21apt-get22:00:131
21113997638,23cyclictest4773-21apt-get21:25:121
21113997638,23cyclictest4773-21apt-get21:25:121
21113997537,24cyclictest13594-21apt-get23:20:131
274022740,6sleep10-21swapper/119:25:241
21113997440,24cyclictest31705-21apt-get22:40:211
21113997440,24cyclictest14108-21apt-get20:20:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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