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2026-02-28 - 10:15
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rack2slot7s.osadl.org (updated Fri Feb 27, 2026 19:55:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3230009996149,7cyclictest0-21swapper/117:50:321
3230010996035,21cyclictest4085325-21multi.sh18:12:202
3230010995933,22cyclictest3514425-21sh17:42:472
3230008995848,6cyclictest4043163-21grep18:10:340
3230010995741,12cyclictest3965324-21sh18:07:212
3230008995741,12cyclictest3461345-21sh17:40:220
3230009995545,5cyclictest0-21swapper/117:20:281
3230010995445,6cyclictest3541261-21Run18:00:482
3230008995438,5cyclictest3997487-21sort18:08:370
3230009995346,4cyclictest0-21swapper/118:09:581
3230009995244,5cyclictest3485326-21multi.sh17:41:281
3230009995241,7cyclictest4042659-21sh18:10:321
3230010995143,4cyclictest3536899-21execl17:50:322
3230010994939,7cyclictest3536395-21execl17:50:012
323001099481,21cyclictest3235151-21fstime17:25:302
323001099481,21cyclictest3235151-21fstime17:25:302
3230009994840,5cyclictest3456726-21sh17:40:011
3230008994528,11cyclictest12450irq/32-eth017:20:290
323000899444,33cyclictest1168-21mta-sts-daemon18:15:280
3230009994334,6cyclictest3235660-21if_eth017:25:191
3230009994334,6cyclictest3235660-21if_eth017:25:191
3230010994217,21cyclictest1913992-21cups-browsed17:07:462
3230008994234,5cyclictest0-21swapper/017:50:280
3230008994233,7cyclictest3541314-21Run18:01:140
323001099413,12cyclictest3424944-21ntpq17:35:202
3230010994124,14cyclictest0-21swapper/218:00:022
3230010994116,22cyclictest3234059-21idleruntime17:20:172
3230009994133,5cyclictest3536392-21execl17:50:031
3230009994133,5cyclictest3231832-21systemd-run17:15:011
3230008994128,10cyclictest3539597-21Run17:58:590
323001099394,8cyclictest4111534-21ntpq18:30:242
3230010993916,20cyclictest0-21swapper/217:35:012
3230008993819,10cyclictest151ktimers/017:35:210
323001099373,7cyclictest4107055-21ntpq18:15:232
323001099372,15cyclictest4113667-21munin-run18:40:012
3230010993713,2cyclictest0-21swapper/217:15:012
3230008993730,3cyclictest0-21swapper/018:35:270
3230010993613,3cyclictest0-21swapper/217:05:012
3230009993627,6cyclictest4111206-21fschecks_time18:30:181
3230008993626,8cyclictest3536394-21execl17:50:030
3230009993522,10cyclictest3541501-21spawn18:03:121
323001099349,5cyclictest3233487-21munin-run17:20:002
3230009993427,4cyclictest0-21swapper/118:25:011
3230008993424,7cyclictest4111483-21needreboot18:30:230
3230009993327,3cyclictest0-21swapper/117:35:011
3230010993223,6cyclictest4109259-21latency_hist18:25:022
3230008993211,17cyclictest151ktimers/017:10:160
3230009993125,3cyclictest0-21swapper/118:40:011
3230009993123,5cyclictest0-21swapper/117:20:001
3230009993123,3cyclictest0-21swapper/117:56:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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