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2026-05-31 - 20:34
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Sun May 31, 2026 12:46:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36880099370368,1cyclictest0-21swapper/207:35:022
36878499370368,1cyclictest0-21swapper/009:58:010
36878499369368,1cyclictest0-21swapper/008:37:020
36878499368366,1cyclictest0-21swapper/011:47:010
36878499368366,1cyclictest0-21swapper/011:47:010
36880099367366,1cyclictest408721-21kworker/2:111:35:022
36878499367366,1cyclictest0-21swapper/009:20:020
36878499367365,1cyclictest0-21swapper/009:15:020
36878499366365,1cyclictest0-21swapper/008:55:010
36878499366365,1cyclictest0-21swapper/008:47:010
36878499366364,1cyclictest0-21swapper/011:13:020
36878499366364,1cyclictest0-21swapper/009:05:010
36880099365364,1cyclictest0-21swapper/211:50:012
36880099365363,1cyclictest408721-21kworker/2:112:00:012
36880099365363,1cyclictest0-21swapper/208:30:012
36880099365363,1cyclictest0-21swapper/208:05:022
36878499365364,1cyclictest0-21swapper/012:11:020
36878499365364,1cyclictest0-21swapper/011:17:020
36878499365364,1cyclictest0-21swapper/010:37:020
36878499365364,1cyclictest0-21swapper/008:10:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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