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2026-02-09 - 10:11
[ 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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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 Mon Feb 09, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3012699212554,68sleep30-21swapper/319:07:113
301256828457,19sleep00-21swapper/019:05:330
301290327964,9sleep20-21swapper/219:09:462
301287727661,10sleep10-21swapper/119:09:251
3013046992825,1cyclictest0-21swapper/322:15:123
301304699272,19cyclictest3200680-21chrt21:45:113
3013046992622,2cyclictest0-21swapper/322:35:163
3013046992522,1cyclictest0-21swapper/300:20:123
3013046992515,5cyclictest34224262sleep323:55:203
301304699243,13cyclictest3172532-21taskset21:26:233
3013046992420,2cyclictest0-21swapper/321:35:183
301304699232,16cyclictest3248084-21taskset22:11:573
3013046992319,2cyclictest0-21swapper/323:35:163
3013046992319,2cyclictest0-21swapper/322:55:163
301304699231,16cyclictest3141431-21sleep21:10:003
301304699231,12cyclictest3342435-21turbostat23:09:593
32745762221,10sleep03141403-21diskmemload22:28:300
301304699221,8cyclictest3358424-21taskset23:18:553
3013046992218,2cyclictest0-21swapper/323:30:013
3013046992217,3cyclictest0-21swapper/300:00:283
301304699220,21cyclictest0-21swapper/321:53:493
301304699215,13cyclictest0-21swapper/300:39:423
301304699212,12cyclictest3272207-21taskset22:25:273
3013046992118,1cyclictest0-21swapper/322:45:293
3013046992118,1cyclictest0-21swapper/322:05:163
3013046992118,1cyclictest0-21swapper/320:20:003
3013046992117,2cyclictest0-21swapper/321:30:213
301304699211,15cyclictest3468715-21chrt00:25:013
301304699211,15cyclictest3146926-21chrt21:10:553
301304699210,1cyclictest0-21swapper/323:00:543
301304699206,12cyclictest0-21swapper/300:10:173
3013046992017,1cyclictest0-21swapper/300:06:403
3013046992017,1cyclictest0-21swapper/300:06:393
3013046992015,2cyclictest0-21swapper/323:40:453
301304699201,15cyclictest3266355-21chrt22:24:073
301304699201,14cyclictest0-21swapper/319:50:123
34186202191,11sleep13418842-21hddtemp_smartct23:55:141
31478092191,13sleep13147823-21ssh21:12:141
3013046991916,1cyclictest0-21swapper/323:20:193
3013046991916,1cyclictest0-21swapper/321:15:173
3013046991916,1cyclictest0-21swapper/321:15:173
3013046991915,1cyclictest0-21swapper/322:30:273
301304699191,14cyclictest3199419-21chrt21:43:423
301304699191,14cyclictest0-21swapper/323:10:553
301304699191,14cyclictest0-21swapper/323:10:543
301304699191,14cyclictest0-21swapper/322:40:323
301304699191,14cyclictest0-21swapper/321:55:353
301304699191,14cyclictest0-21swapper/319:30:123
301304699191,13cyclictest3313734-21chrt22:50:253
34308242181,9sleep13430875-21ssh00:00:241
34020082181,6sleep23141403-21diskmemload23:45:132
33428342181,11sleep23343092-21cstates23:10:132
33428342181,11sleep23343092-21cstates23:10:122
3013046991816,1cyclictest0-21swapper/300:15:023
3013046991814,2cyclictest0-21swapper/323:50:173
3013046991813,3cyclictest0-21swapper/300:30:143
301304699181,14cyclictest3232859-21chrt22:03:593
301304699181,14cyclictest0-21swapper/323:31:353
301304699181,13cyclictest0-21swapper/319:40:123
301304699181,10cyclictest3098010-21taskset20:25:173
34265512171,4sleep03141403-21diskmemload00:00:020
34078942171,10sleep03141403-21diskmemload23:47:230
32651992171,2sleep00-21swapper/022:22:290
31919762171,2sleep00-21swapper/021:39:590
301304699176,8cyclictest3041209-21turbostat19:39:553
301304699172,11cyclictest3402231-21taskset23:45:133
301304699171,3cyclictest0-21swapper/320:45:123
3013046991713,2cyclictest0-21swapper/319:15:113
301304699171,13cyclictest0-21swapper/320:35:113
301304699171,12cyclictest3067546-21turbostat19:59:593
301304699171,12cyclictest0-21swapper/319:10:123
301304699171,11cyclictest3120688-21taskset20:50:113
301304699170,14cyclictest0-21swapper/319:20:143
301304699170,13cyclictest0-21swapper/321:20:033
34915232161,3sleep10-21swapper/100:37:121
34670342161,3sleep00-21swapper/000:23:190
34643772161,8sleep13464433-21ntpq00:20:201
34598072160,1sleep00-21swapper/000:19:510
34490332161,3sleep00-21swapper/000:11:120
34424262161,3sleep23141403-21diskmemload00:08:462
34424262161,3sleep23141403-21diskmemload00:08:452
33987882161,3sleep00-21swapper/023:41:180
33927412161,4sleep03392748-21ssh23:39:370
33910502161,3sleep23141403-21diskmemload23:37:112
32658232161,2sleep10-21swapper/122:23:221
32554092161,6sleep23255419-21ssh22:15:282
32256902161,5sleep13225708-21apt-get22:00:131
32251332160,3sleep10-21swapper/121:59:441
31985312161,3sleep00-21swapper/021:42:200
301304699161,9cyclictest3128181-21taskset20:55:163
301304699161,11cyclictest3094201-21sleep20:25:003
301304699160,13cyclictest0-21swapper/320:10:193
34760782151,4sleep23141403-21diskmemload00:29:032
34165662151,8sleep03141403-21diskmemload23:52:570
33255062151,2sleep10-21swapper/122:59:261
32852902159,3sleep13286929-21kthreadcore22:35:171
32499152151,9sleep13249926-21ssh22:14:401
32172592151,2sleep00-21swapper/021:55:060
31821862151,8sleep10-21swapper/121:33:031
31088882150,10sleep13108928-21ntpq20:35:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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