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2025-12-16 - 17:29
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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 rack0slot7.osadl.org (updated Tue Dec 16, 2025 00:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44215499399399,0cyclictest0-21swapper/519:48:3911
44215999289282,5cyclictest3617494-21Renderer19:25:392
442158992890,1cyclictest0-21swapper/919:40:4915
44216199287281,5cyclictest4696-21Xorg19:27:164
44215499287282,4cyclictest3617494-21Renderer19:39:3111
44215399287281,5cyclictest3617494-21Renderer19:40:1810
442149992870,1cyclictest0-21swapper/019:43:500
44215099286282,3cyclictest3617494-21Renderer19:31:491
44216099284280,3cyclictest3617494-21Renderer20:36:083
44215499284278,5cyclictest3617494-21Renderer19:42:2411
44215299284278,4cyclictest3617494-21Renderer20:38:599
44215099284279,4cyclictest3617494-21Renderer19:28:151
44215799283279,3cyclictest4969-21gnome-shell19:44:5814
44215199283277,5cyclictest3617494-21Renderer19:26:398
44214999283275,7cyclictest4696-21Xorg19:40:000
44216499282282,0cyclictest0-21swapper/1519:48:447
44216399282282,0cyclictest0-21swapper/1419:37:196
44216299282277,5cyclictest4696-21Xorg19:34:085
44214999282273,8cyclictest4696-21Xorg20:36:330
44216299281277,3cyclictest4696-21Xorg19:44:505
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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