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2026-03-08 - 04:11
[ 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 #3, slot #3

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 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 rack3slot3s.osadl.org (updated Sun Mar 08, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3235066213071,55sleep30-21swapper/319:07:523
3235074211195,10sleep10-21swapper/119:07:581
323492128654,11sleep20-21swapper/219:06:032
323522028158,17sleep00-21swapper/019:09:500
36613862261,4sleep13661399-21sh23:57:311
32852372250,3sleep10-21swapper/119:50:271
33798652241,12sleep244-21ksoftirqd/221:15:292
3235553992421,1cyclictest0-21swapper/321:40:443
323555399234,16cyclictest0-21swapper/323:14:373
323555399232,17cyclictest37155472chrt00:30:003
323555399230,2cyclictest0-21swapper/319:10:023
323555399230,21cyclictest0-21swapper/322:39:153
37113892212,14sleep03711440-21ntpq00:25:210
34857822211,7sleep13365846-21diskmemload22:16:331
33913212211,6sleep03365846-21diskmemload21:24:050
323555399210,18cyclictest0-21swapper/300:19:133
323555399205,13cyclictest0-21swapper/323:17:363
3235553992016,2cyclictest0-21swapper/321:55:003
3235553992011,6cyclictest0-21swapper/321:20:493
323555399201,15cyclictest0-21swapper/321:27:043
323555399201,15cyclictest0-21swapper/300:20:023
33979382191,2sleep00-21swapper/021:26:170
33435042191,14sleep23343557-21/usr/sbin/munin20:45:222
323555399191,16cyclictest0-21swapper/321:59:383
323555399191,15cyclictest0-21swapper/323:34:003
323555399191,15cyclictest0-21swapper/323:20:183
323555399191,15cyclictest0-21swapper/322:21:183
323555399191,15cyclictest0-21swapper/322:15:193
323555399191,15cyclictest0-21swapper/321:34:093
323555399191,15cyclictest0-21swapper/320:55:533
323555399191,14cyclictest66950irq/132-enp1s0-TxRx-322:27:023
323555399191,14cyclictest0-21swapper/323:41:043
323555399191,14cyclictest0-21swapper/322:06:223
323555399191,14cyclictest0-21swapper/320:25:123
3235553991910,6cyclictest3730874-21taskset00:37:133
3235553991910,6cyclictest3478060-21taskset22:12:533
323555399190,15cyclictest0-21swapper/300:05:493
36252422181,3sleep20-21swapper/223:36:162
32398762181,5sleep03239924-21ntpq19:10:180
323555399187,7cyclictest3275153-21turbostat19:45:003
3235553991814,2cyclictest0-21swapper/321:37:153
3235553991813,2cyclictest0-21swapper/300:31:423
3235553991812,3cyclictest3538295-21taskset22:46:403
3235553991811,4cyclictest66950irq/132-enp1s0-TxRx-321:15:243
323555399181,14cyclictest0-21swapper/323:56:213
323555399181,14cyclictest0-21swapper/323:50:213
323555399181,14cyclictest0-21swapper/323:37:323
323555399181,14cyclictest0-21swapper/323:25:193
323555399181,14cyclictest0-21swapper/323:07:563
3235553991811,4cyclictest0-21swapper/322:55:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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