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2026-02-24 - 05:41
[ 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 100 highest latencies:
System rack3slot3s.osadl.org (updated Tue Feb 24, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2747614996866,1cyclictest0-21swapper/322:41:003
2747609996361,1cyclictest0-21swapper/221:32:572
2747609995955,2cyclictest779-21runrttasks21:24:262
2747605995956,2cyclictest779-21runrttasks21:49:461
274760599590,56cyclictest0-21swapper/100:25:531
2747604995955,2cyclictest779-21runrttasks00:12:450
2747604995552,2cyclictest151ktimers/023:29:590
2747609995149,1cyclictest2955388-21sh21:58:442
2747605995148,3cyclictest311ktimers/123:53:291
2747604995150,1cyclictest0-21swapper/019:32:080
274761499497,28cyclictest2786808-21ntpq19:45:213
2747609994645,1cyclictest0-21swapper/223:55:202
2747605994645,1cyclictest0-21swapper/121:43:351
2747604994641,3cyclictest0-21swapper/021:15:140
274760999451,37cyclictest2868441-21diskmemload22:57:482
274760599450,41cyclictest0-21swapper/123:46:341
274760999444,35cyclictest63350irq/127-enp1s0-TxRx-300:00:212
2747614994339,3cyclictest798-21munin-node22:02:053
2747614994140,1cyclictest0-21swapper/319:43:053
2747614994134,6cyclictest2868441-21diskmemload00:20:413
2747609994137,2cyclictest2868441-21diskmemload21:19:192
2747604994138,2cyclictest3080479-21ssh23:10:080
274760499410,39cyclictest0-21swapper/023:41:300
274760999404,34cyclictest3040120-21ntpq22:45:222
2747609994011,27cyclictest521-21rpcbind22:22:102
274761499390,39cyclictest0-21swapper/322:55:213
2747609993936,2cyclictest588-21gpm00:21:192
2747609993935,3cyclictest401ktimers/200:37:102
2747605993933,4cyclictest779-21runrttasks23:02:011
2747604993914,5cyclictest3130716-21ssh23:37:460
274761499382,5cyclictest2930479-21apt-get21:45:133
2747605993834,3cyclictest311ktimers/100:00:401
2747604993824,12cyclictest29805642sleep022:12:240
2747614993733,2cyclictest2978328-21ntpq22:10:213
274761499373,11cyclictest2868441-21diskmemload00:33:083
2747614993730,6cyclictest0-21swapper/322:32:133
2747609993733,3cyclictest401ktimers/200:07:452
274760999370,1cyclictest0-21swapper/223:50:222
274760599370,32cyclictest0-21swapper/100:08:111
2747609993611,23cyclictest3139296-21sh23:42:372
2747605993635,1cyclictest0-21swapper/121:14:111
2747604993635,1cyclictest0-21swapper/023:30:510
2747609993532,2cyclictest2990765-21sh22:19:042
2747605993534,1cyclictest0-21swapper/121:20:541
2747605993532,2cyclictest2868441-21diskmemload22:14:491
2747605993514,20cyclictest632-21wpa_supplicant20:12:391
2747604993532,2cyclictest2796602-21memory19:55:170
274760499350,4cyclictest171rcu_preempt00:26:170
274760999349,17cyclictest2857342-21ntpq20:55:182
274760999342,19cyclictest2868441-21diskmemload23:27:302
274760999340,29cyclictest2868441-21diskmemload22:01:052
2747605993433,1cyclictest0-21swapper/123:35:591
2747605993428,2cyclictest2868441-21diskmemload22:29:191
274760499340,34cyclictest0-21swapper/019:35:220
274761499337,24cyclictest2973932-21sh22:09:593
2747614993330,3cyclictest491ktimers/300:14:423
2747609993312,8cyclictest2874389-21ssh21:11:312
274760999330,1cyclictest0-21swapper/222:34:292
274760499335,16cyclictest2806870-21ntpq20:05:210
2747604993332,1cyclictest0-21swapper/023:17:530
274761499322,22cyclictest777-21snmpd00:17:113
274761499321,29cyclictest2902079-21sh21:28:043
274760999320,21cyclictest3004696-21ntpq22:25:212
2747605993231,1cyclictest0-21swapper/100:36:571
274760599320,1cyclictest0-21swapper/123:40:231
2747614993130,1cyclictest0-21swapper/321:33:553
2747614993130,1cyclictest0-21swapper/319:50:363
274761499311,26cyclictest2868441-21diskmemload23:34:043
2747605993126,4cyclictest63150irq/126-enp1s0-TxRx-200:10:191
2747604993127,3cyclictest151ktimers/023:51:250
274760999301,2cyclictest2947646-21/usr/sbin/munin21:55:012
2747609993011,15cyclictest3147482-21sh23:46:562
274760599308,18cyclictest2868441-21diskmemload22:05:361
274760599302,23cyclictest2868441-21diskmemload22:36:391
274760599300,5cyclictest0-21swapper/120:40:021
2747604993013,13cyclictest3209004-21sh00:22:130
2747614992928,1cyclictest0-21swapper/300:37:353
274761499292,23cyclictest2868441-21diskmemload23:05:483
2747614992912,6cyclictest0-21swapper/322:18:203
2747609992927,1cyclictest0-21swapper/221:39:072
2747609992915,9cyclictest0-21swapper/222:42:332
274760599299,14cyclictest3042932-21runrttasks22:48:061
2747605992928,1cyclictest0-21swapper/121:26:561
2747605992926,1cyclictest3226110-21sh00:31:561
2747605992918,6cyclictest2997393-21sh22:21:251
274760499290,13cyclictest0-21swapper/023:48:330
2747614992827,1cyclictest0-21swapper/319:20:213
2747614992823,4cyclictest3096792-21sh23:18:453
2747609992816,2cyclictest2868441-21diskmemload21:46:272
274760999280,26cyclictest2847459-21ntpq20:45:222
274760599285,5cyclictest0-21swapper/123:15:221
2747605992814,10cyclictest2868441-21diskmemload22:30:551
274760499281,25cyclictest3048844-21ntpq22:50:200
2747604992812,12cyclictest779-21runrttasks21:28:280
2747614992719,7cyclictest3070102-21sh23:03:513
274760999275,9cyclictest2868441-21diskmemload23:15:532
2747609992725,1cyclictest0-21swapper/222:08:422
2747609992723,3cyclictest3070242-21kworker/u16:2+xprtiod23:08:142
2747609992716,9cyclictest3046404-21kthreadcore22:50:162
2747609992716,10cyclictest2927644-21sh21:42:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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