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2025-12-03 - 19:48
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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 Wed Dec 03, 2025 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2344006997416,39cyclictest2428874-21munin-run09:40:013
2344006997416,39cyclictest2428874-21munin-run09:40:013
2344006997333,19cyclictest0-21swapper/310:24:373
2344006997313,21cyclictest1088-21runrttasks07:49:103
2344006997131,19cyclictest0-21swapper/311:45:413
2344006996912,38cyclictest511ktimers/312:29:523
2344006996830,18cyclictest0-21swapper/309:54:333
2344005996748,19cyclictest0-21swapper/212:35:172
2344006996617,39cyclictest876-21mta-sts-daemon09:16:333
234400699656,40cyclictest2443244-21/usr/sbin/munin10:05:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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