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2025-11-08 - 08:02
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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 50 highest latencies:
System rack0slot7.osadl.org (updated Fri Nov 07, 2025 00:46:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194883399386385,1cyclictest27750irq/127-ahci[0000:00:17.0]23:11:3915
194880499291282,8cyclictest28682-21Renderer23:45:200
194881199289282,5cyclictest28682-21Renderer00:31:098
194883199288282,5cyclictest28682-21Renderer23:18:5914
194880499288281,6cyclictest9704-21Xorg23:38:110
194880499288281,6cyclictest9704-21Xorg23:38:110
194883899287279,7cyclictest10230-21gnome-shell23:42:593
1948838992870,286cyclictest0-21swapper/1123:06:593
194882699287282,4cyclictest28682-21Renderer00:37:1813
194882699287282,4cyclictest28682-21Renderer00:37:1813
1948817992870,1cyclictest0-21swapper/423:17:0510
1948804992870,286cyclictest0-21swapper/023:31:230
194885099286280,5cyclictest28682-21Renderer23:11:065
194883399286282,3cyclictest28682-21Renderer23:29:1715
194881199286282,3cyclictest28682-21Renderer23:37:428
194881199286282,3cyclictest28682-21Renderer23:37:428
194880799286281,4cyclictest28682-21Renderer00:33:451
194884599285280,4cyclictest28682-21Renderer23:15:264
194883699285280,4cyclictest28682-21Renderer23:36:542
194883699285280,4cyclictest28682-21Renderer23:36:532
1948833992850,3cyclictest3031270-21StreamT~15
194883199285280,4cyclictest28682-21Renderer23:33:2214
194881599285281,3cyclictest9704-21Xorg23:11:079
194881199285281,3cyclictest9704-21Xorg23:26:408
194880799285281,3cyclictest28682-21Renderer23:47:311
194880799285281,3cyclictest28682-21Renderer23:44:301
1948856992840,283cyclictest0-21swapper/1523:47:597
194883699284280,3cyclictest9704-21Xorg19:11:022
194883699284280,3cyclictest9704-21Xorg19:11:012
194883199284277,6cyclictest9704-21Xorg00:35:2014
194883199284277,6cyclictest9704-21Xorg00:35:2014
194882499284279,4cyclictest9704-21Xorg23:22:4012
194881599284278,5cyclictest28682-21Renderer23:07:039
1948807992840,283cyclictest0-21swapper/123:34:071
194880499284278,5cyclictest9704-21Xorg23:09:380
194883899283279,3cyclictest10230-21gnome-shell23:22:593
194883699283279,3cyclictest9704-21Xorg23:40:022
194883199283279,3cyclictest9704-21Xorg23:44:0214
194882499283278,4cyclictest10230-21gnome-shell23:40:5912
194880499283276,6cyclictest10230-21gnome-shell19:11:590
194880499283276,6cyclictest10230-21gnome-shell19:11:580
194885299282281,0cyclictest0-21swapper/1423:22:446
194883899282276,5cyclictest28682-21Renderer00:31:033
194883399282278,3cyclictest9704-21Xorg00:39:1015
194883399282278,3cyclictest9704-21Xorg00:39:1015
194883399282278,3cyclictest28682-21Renderer23:34:2415
194883199282280,1cyclictest0-21swapper/823:28:4014
194880499282275,6cyclictest10230-21gnome-shell23:10:590
194885299281281,0cyclictest0-21swapper/1423:49:336
194883899281276,4cyclictest28682-21Renderer23:11:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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