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2026-05-31 - 22:18
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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 20 highest latencies:
System rackeslot3.osadl.org (updated Sun May 31, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
452645996462,1cyclictest0-21swapper/107:22:021
452645996448,15cyclictest478120-21kworker/1:009:05:011
45264599641,62cyclictest0-21swapper/108:55:221
45264599632,1cyclictest0-21swapper/110:43:031
45264599630,62cyclictest0-21swapper/109:19:511
45264599630,2cyclictest0-21swapper/111:23:301
45264599621,60cyclictest0-21swapper/108:37:561
452645996159,1cyclictest0-21swapper/107:50:241
45264599610,60cyclictest0-21swapper/107:35:111
45264599610,60cyclictest0-21swapper/107:30:221
45264599610,60cyclictest0-21swapper/107:30:221
452645996042,16cyclictest3109315-1kworker/1:0H09:35:141
452645995957,1cyclictest0-21swapper/110:29:361
452645995956,2cyclictest0-21swapper/111:30:311
452645995941,16cyclictest637003-21kworker/1:212:10:011
452645995855,2cyclictest0-21swapper/111:29:561
452645995742,14cyclictest644061-21kworker/1:012:15:131
452645995742,14cyclictest644061-21kworker/1:012:15:131
452645995739,17cyclictest463727-21kworker/1:007:45:181
452645995738,17cyclictest584573-21kworker/1:011:45:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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