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2026-06-25 - 13:43
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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 Thu Jun 25, 2026 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
78344599367365,1cyclictest954384-21kworker/0:223:44:010
78344599366364,1cyclictest0-21swapper/022:16:020
78344599365364,1cyclictest893139-21kworker/0:022:24:020
78344599365364,1cyclictest798554-21kworker/0:021:16:020
78344599364363,1cyclictest874370-21kworker/0:221:41:020
78344599364363,1cyclictest874370-21kworker/0:221:31:010
78344599364362,1cyclictest0-21swapper/000:11:010
78344599363362,1cyclictest954384-21kworker/0:200:05:020
78344599363362,1cyclictest893139-21kworker/0:021:54:010
78344599363362,1cyclictest0-21swapper/023:59:010
78344599363362,1cyclictest0-21swapper/022:40:010
78344599362361,1cyclictest0-21swapper/023:09:020
78344599362360,1cyclictest954384-21kworker/0:222:45:020
78344599361360,1cyclictest798554-21kworker/0:020:47:020
78344599361360,1cyclictest0-21swapper/023:52:010
78344599361360,1cyclictest0-21swapper/022:51:010
78344599361360,1cyclictest0-21swapper/020:15:010
78344599361360,1cyclictest0-21swapper/000:38:010
78344599361359,1cyclictest954384-21kworker/0:223:11:020
78344599361359,1cyclictest0-21swapper/023:27:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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