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2025-11-26 - 04:04
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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 rack1slot8.osadl.org (updated Wed Nov 26, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1938199887806,55cyclictest0-21swapper/019:11:470
1938299811728,58cyclictest0-21swapper/119:11:471
192172711690,14sleep10-21swapper/119:08:471
190692460435,16sleep00-21swapper/019:07:160
1938199440388,10cyclictest20212-21sendmail_mailtr21:45:260
1938299945,65cyclictest0-21swapper/122:34:581
216899910,3rtkit-daemon2167-21rtkit-daemon00:00:091
216899870,18rtkit-daemon2167-21rtkit-daemon23:00:031
19381998713,67cyclictest0-21swapper/022:17:590
19381998713,67cyclictest0-21swapper/022:17:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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