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2026-02-28 - 20:56
[ 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 #5, slot #4

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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  Intel
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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot4s.osadl.org (updated Sat Feb 28, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3459649996459,3cyclictest2615935-21kworker/u8:1+events_unbound19:15:031
3459647996255,5cyclictest3540863-21latency_hist20:30:010
3459649996157,3cyclictest2610401-21kworker/u8:3+events_unbound21:06:101
3459647996138,9cyclictest274-21systemd-journal22:55:000
3459647996138,9cyclictest274-21systemd-journal22:55:000
3459649996054,4cyclictest3570782-21kworker/u8:1+events_unbound22:01:081
3459649995847,7cyclictest274-21systemd-journal21:26:101
3459647995747,7cyclictest3521055-21latency_hist20:10:000
3459649995647,7cyclictest3580682-21kworker/u8:0+flush-8:021:46:051
3459649995551,3cyclictest3739487-21kworker/u8:2+flush-8:023:51:091
3459649995549,4cyclictest2610401-21kworker/u8:3+events_unbound19:11:051
3459649995548,5cyclictest3496339-21kworker/u8:0+events_unbound19:46:051
3459649995548,5cyclictest3454625-21kworker/u8:2+events_unbound19:26:061
3459649995547,6cyclictest3570782-21kworker/u8:1+flush-8:022:16:111
3459649995546,7cyclictest3454625-21kworker/u8:2+flush-8:020:01:101
3459649995546,7cyclictest3454625-21kworker/u8:2+flush-8:020:01:101
36334962540,5sleep30-21swapper/322:01:003
3459649995442,9cyclictest3788799-21apt-get00:40:011
36737072530,4chrt0-21swapper/022:41:030
3459649995346,6cyclictest3454625-21kworker/u8:2+flush-8:019:51:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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