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2026-01-18 - 00:36
[ 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 #c, slot #8

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 rackcslot8s.osadl.org (updated Sat Jan 17, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391700,32ptp4l0-21swapper/107:05:201
111391650,26ptp4l0-21swapper/007:05:140
111391620,5ptp4l0-21swapper/407:05:594
956426050,6sleep20-21swapper/207:05:312
111391590,12ptp4l0-21swapper/507:08:135
306682580,0sleep70-21swapper/707:50:297
306682580,0sleep70-21swapper/707:50:287
965625735,7sleep30-21swapper/307:06:433
969825343,6sleep70-21swapper/707:07:197
140072500,0sleep60-21swapper/611:39:216
906724930,4sleep60-21swapper/607:05:196
111391400,0ptp4l0-21swapper/109:50:191
111391340,0ptp4l0-21swapper/111:45:201
111391330,0ptp4l0-21swapper/508:45:165
111391330,0ptp4l0-21swapper/407:15:194
111391330,0ptp4l0-21swapper/110:25:211
111391330,0ptp4l0-21swapper/110:25:201
111391330,0ptp4l0-21swapper/010:35:080
111391320,0ptp4l0-21swapper/409:45:194
111391320,0ptp4l0-21swapper/409:18:474
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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