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2025-12-25 - 03:07
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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 24, 2025 12:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2915464991220,2cyclictest0-21swapper/112:30:181
2915464991220,2cyclictest0-21swapper/112:30:171
29154709910385,0cyclictest0-21swapper/709:43:447
2915470997638,19cyclictest1086-21runrttasks08:28:077
2915470997416,39cyclictest3068659-21chrt11:38:117
2915470997214,39cyclictest2977782-21chrt08:57:567
2915470997132,39cyclictest0-21swapper/708:13:567
291546899710,70cyclictest0-21swapper/510:10:175
2915470996829,39cyclictest0-21swapper/711:44:277
291547099668,39cyclictest3022559-21awk10:15:207
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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