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2026-01-19 - 22:11
[ 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 #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 100 highest latencies:
System rackcslot8s.osadl.org (updated Mon Jan 19, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391730,5ptp4l0-21swapper/107:05:201
111391730,5ptp4l0-21swapper/107:05:191
111391630,5ptp4l0-21swapper/007:07:370
111391630,5ptp4l0-21swapper/007:07:370
290672620,0sleep00-21swapper/012:05:120
111391620,15ptp4l0-21swapper/507:05:305
111391620,15ptp4l0-21swapper/507:05:305
530126050,6sleep70-21swapper/707:06:277
530126050,6sleep70-21swapper/707:06:277
94302580,0sleep50-21swapper/512:21:525
94302580,0sleep50-21swapper/512:21:515
111391580,5ptp4l0-21swapper/407:09:004
111391580,5ptp4l0-21swapper/407:08:594
547225635,7sleep30-21swapper/307:08:393
547225635,7sleep30-21swapper/307:08:383
550724939,6sleep20-21swapper/207:09:102
550724939,6sleep20-21swapper/207:09:102
551124736,6sleep60-21swapper/607:09:156
551124736,6sleep60-21swapper/607:09:146
111391340,0ptp4l0-21swapper/511:05:185
111391320,0ptp4l0-21swapper/209:11:172
111391310,0ptp4l0-21swapper/509:18:565
111391310,0ptp4l0-21swapper/508:05:155
111391310,0ptp4l0-21swapper/411:59:274
111391310,0ptp4l0-21swapper/012:01:320
111391310,0ptp4l0-21swapper/011:44:100
111391310,0ptp4l0-21swapper/007:55:150
111391300,3ptp4l0-21swapper/010:40:150
111391300,2ptp4l481ktimersoftd/409:58:324
111391300,2ptp4l0-21swapper/411:50:214
111391300,0ptp4l0-21swapper/412:26:334
111391300,0ptp4l0-21swapper/011:09:550
111391300,0ptp4l0-21swapper/010:17:410
111391300,0ptp4l0-21swapper/009:37:400
111391290,0ptp4l32642-21ssh10:40:294
111391290,0ptp4l0-21swapper/412:04:504
111391290,0ptp4l0-21swapper/410:34:584
111391290,0ptp4l0-21swapper/410:12:314
111391290,0ptp4l0-21swapper/409:28:574
111391290,0ptp4l0-21swapper/408:15:174
111391290,0ptp4l0-21swapper/112:17:371
111391290,0ptp4l0-21swapper/112:17:371
111391290,0ptp4l0-21swapper/111:42:091
111391290,0ptp4l0-21swapper/107:43:371
111391290,0ptp4l0-21swapper/012:33:420
111391280,2ptp4l0-21swapper/012:24:130
111391280,2ptp4l0-21swapper/012:24:120
111391280,2ptp4l0-21swapper/010:46:450
111391280,1ptp4l0-21swapper/411:18:214
111391280,1ptp4l0-21swapper/409:54:184
111391280,0ptp4l0-21swapper/510:34:295
111391280,0ptp4l0-21swapper/412:12:384
111391280,0ptp4l0-21swapper/410:24:134
111391280,0ptp4l0-21swapper/112:25:431
111391280,0ptp4l0-21swapper/111:08:441
111391280,0ptp4l0-21swapper/110:56:361
111391280,0ptp4l0-21swapper/009:26:150
111391280,0ptp4l0-21swapper/009:05:140
111391270,1ptp4l321ktimersoftd/211:28:372
111391270,0ptp4l15886-21ssh11:46:154
111391270,0ptp4l0-21swapper/511:42:365
111391270,0ptp4l0-21swapper/511:25:155
111391270,0ptp4l0-21swapper/412:05:154
111391270,0ptp4l0-21swapper/411:43:224
111391270,0ptp4l0-21swapper/411:37:034
111391270,0ptp4l0-21swapper/410:45:344
111391270,0ptp4l0-21swapper/410:04:444
111391270,0ptp4l0-21swapper/111:39:491
111391270,0ptp4l0-21swapper/110:33:421
111391270,0ptp4l0-21swapper/107:54:381
111391270,0ptp4l0-21swapper/011:21:390
111391270,0ptp4l0-21swapper/010:37:010
111391270,0ptp4l0-21swapper/007:10:120
111391260,0ptp4l0-21swapper/511:03:125
111391260,0ptp4l0-21swapper/510:24:045
111391260,0ptp4l0-21swapper/412:36:084
111391260,0ptp4l0-21swapper/409:33:384
111391260,0ptp4l0-21swapper/112:07:031
111391260,0ptp4l0-21swapper/012:12:480
111391260,0ptp4l0-21swapper/011:56:230
111391260,0ptp4l0-21swapper/011:53:520
111391260,0ptp4l0-21swapper/011:13:270
111391260,0ptp4l0-21swapper/009:40:380
111391260,0ptp4l0-21swapper/009:40:380
111391250,4ptp4l0-21swapper/011:01:220
111391250,2ptp4l481ktimersoftd/412:23:054
111391250,2ptp4l481ktimersoftd/412:23:054
111391250,2ptp4l18011-21grep08:45:092
111391250,1ptp4l27827-21df10:35:114
111391250,1ptp4l21460-21cat10:25:204
111391250,0ptp4l561ktimersoftd/509:56:015
111391250,0ptp4l0-21swapper/611:56:486
111391250,0ptp4l0-21swapper/611:19:316
111391250,0ptp4l0-21swapper/608:55:206
111391250,0ptp4l0-21swapper/511:24:595
111391250,0ptp4l0-21swapper/510:09:285
111391250,0ptp4l0-21swapper/509:53:425
111391250,0ptp4l0-21swapper/411:23:474
111391250,0ptp4l0-21swapper/410:59:534
111391250,0ptp4l0-21swapper/409:20:414
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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