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2026-01-28 - 05:36
[ 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 20 highest latencies:
System rack2slot7s.osadl.org (updated Tue Jan 27, 2026 19:55:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
682181998779,5cyclictest1504116-21grep18:10:272
682180996860,4cyclictest0-21swapper/117:50:181
682180996851,13cyclictest996519-21ntpq17:55:101
682179996851,11cyclictest12450irq/32-eth018:34:230
682181996453,5cyclictest0-21swapper/217:50:082
682180996355,5cyclictest1527107-21sh18:11:231
682179996041,12cyclictest0-21swapper/017:50:100
682179995332,17cyclictest1503178-21sort18:10:250
682181995241,6cyclictest987631-21sh17:43:192
68218099525,8cyclictest171rcu_preempt18:15:051
682181994938,6cyclictest1479864-21sh18:09:242
682180994942,4cyclictest1463426-21sh18:08:471
682181994837,7cyclictest1569027-21kernelversion18:20:012
682179994834,11cyclictest994242-21munin-run17:50:010
682180994738,4cyclictest0-21swapper/117:40:141
682180994730,10cyclictest271ktimers/118:00:061
68217999474,23cyclictest914359-21sh17:40:100
682181994640,3cyclictest0-21swapper/217:39:292
682181994638,5cyclictest686375-21whetstone-doubl17:20:012
682181994537,5cyclictest682469-21latency_hist17:05:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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