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2026-08-03 - 00:19
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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 rackfslot7.osadl.org (updated Sun Aug 02, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27418869911491,19cyclictest2764268-21grep07:50:153
274188699876,79cyclictest2880795-21ntpq11:20:193
274188699855,79cyclictest2757414-21/usr/sbin/munin07:35:233
2741886997618,39cyclictest2912391-21munin-run12:20:013
2741886997436,19cyclictest2773324-21meminfo08:05:223
2741886997314,19cyclictest0-21swapper/310:27:553
2741886997214,39cyclictest2745986-21lpstat07:15:193
2741886997012,39cyclictest2870452-21seq11:01:453
274188699688,40cyclictest2901456-21grep12:00:003
2741886996810,39cyclictest2837739-21taskset10:02:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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