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2025-12-07 - 15:41
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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 Sun Dec 07, 2025 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180182686662,17sleep00-21swapper/007:09:180
1812699418353,49cyclictest0-21swapper/008:21:450
1812699401311,80cyclictest0-21swapper/007:10:090
1812799377311,44cyclictest0-21swapper/108:21:441
18127999010,67cyclictest0-21swapper/112:04:581
18127998914,58cyclictest0-21swapper/108:53:591
18127998611,59cyclictest0-21swapper/109:50:591
1781928543,30sleep10-21swapper/107:07:181
273782830,9sleep00-21swapper/009:05:020
1812799837,55cyclictest0-21swapper/110:19:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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