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2026-02-01 - 06:49
[ 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 Sun Feb 01, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1058450214298,37sleep30-21swapper/319:05:203
105927128756,9sleep10-21swapper/119:07:551
105912428059,15sleep00-21swapper/019:06:060
105928227862,10sleep20-21swapper/219:08:042
1059552993229,1cyclictest0-21swapper/319:50:003
1059552992926,1cyclictest0-21swapper/300:40:003
1059552992622,2cyclictest0-21swapper/321:40:233
14165532250,5sleep21416558-21gltestperf23:25:172
14124462251,3sleep10-21swapper/123:20:281
1059552992522,1cyclictest0-21swapper/323:35:103
13376502231,2sleep10-21swapper/122:36:101
1059552992316,5cyclictest67150irq/132-enp1s0-TxRx-322:27:153
105955299231,18cyclictest1479787-21taskset00:00:343
114696722216,3sleep11147084-21kthreadcore20:30:151
105955299229,7cyclictest1379238-21taskset23:00:563
1059552992219,1cyclictest0-21swapper/323:55:203
1059552992218,2cyclictest0-21swapper/321:25:153
105955299221,17cyclictest1525809-21taskset00:30:313
14944552211,10sleep11494457-21ssh00:14:111
105955299212,13cyclictest1415200-21taskset23:24:213
105955299212,13cyclictest1387644-21taskset23:05:543
105955299212,13cyclictest1205965-21taskset21:20:023
105955299212,13cyclictest1202722-21taskset21:16:213
1059552992117,2cyclictest0-21swapper/300:15:093
105955299211,15cyclictest1494002-21chrt00:13:323
1059552992018,1cyclictest0-21swapper/321:45:203
1059552992017,1cyclictest0-21swapper/322:10:013
1059552992016,2cyclictest0-21swapper/323:10:173
1059552992016,2cyclictest0-21swapper/322:35:163
1059552992015,3cyclictest0-21swapper/322:30:163
1059552992015,3cyclictest0-21swapper/322:30:163
105955299201,14cyclictest1273295-21chrt22:00:103
105955299200,13cyclictest1237002-21taskset21:36:383
105955299193,12cyclictest1303480-21taskset22:15:433
105955299192,12cyclictest1432162-21taskset23:34:323
105955299192,12cyclictest1432162-21taskset23:34:313
1059552991916,1cyclictest0-21swapper/320:10:003
1059552991915,2cyclictest0-21swapper/300:20:213
105955299191,2cyclictest0-21swapper/322:46:283
1059552991912,4cyclictest12900282sleep322:10:093
105955299191,15cyclictest0-21swapper/321:50:523
105955299191,14cyclictest1422124-21chrt23:27:103
1059552991911,4cyclictest14042382sleep323:15:493
105955299191,14cyclictest0-21swapper/323:45:303
105955299191,14cyclictest0-21swapper/322:42:513
105955299191,14cyclictest0-21swapper/321:31:243
105955299191,14cyclictest0-21swapper/321:31:243
105955299191,14cyclictest0-21swapper/300:25:133
13828142181,12sleep11382916-21fschecks_time23:05:161
105955299182,12cyclictest1196032-21taskset21:13:573
1059552991815,2cyclictest0-21swapper/322:55:163
1059552991815,1cyclictest0-21swapper/322:20:123
1059552991815,1cyclictest0-21swapper/319:10:263
1059552991814,2cyclictest0-21swapper/320:25:173
105955299181,14cyclictest0-21swapper/323:40:453
105955299181,14cyclictest0-21swapper/322:50:063
1059552991811,3cyclictest11403562sleep320:20:263
105955299181,13cyclictest0-21swapper/321:55:033
105955299180,14cyclictest1465879-21chrt23:54:523
15269262171,2sleep20-21swapper/200:32:112
15037432171,4sleep01188358-21diskmemload00:20:040
13399912171,4sleep01188358-21diskmemload22:39:300
12957212171,4sleep01188358-21diskmemload22:11:360
12822072175,8sleep11252355-21kworker/u16:0+nfsiod22:05:151
105955299172,10cyclictest1162347-21taskset20:45:113
1059552991714,1cyclictest0-21swapper/320:50:173
1059552991711,4cyclictest0-21swapper/300:05:243
105955299171,13cyclictest0-21swapper/321:10:013
105955299171,13cyclictest0-21swapper/319:55:113
105955299171,10cyclictest1176023-21taskset20:55:173
105955299170,13cyclictest0-21swapper/321:00:193
15034252161,10sleep01503437-21cron00:20:000
14740782161,2sleep10-21swapper/123:59:361
13052582161,9sleep01188358-21diskmemload22:18:160
13051262161,2sleep10-21swapper/122:18:061
12138432161,9sleep11188358-21diskmemload21:24:301
105955299166,6cyclictest1130195-21taskset20:11:283
1059552991613,1cyclictest0-21swapper/319:30:223
1059552991613,1cyclictest0-21swapper/319:15:223
105955299161,11cyclictest1082544-21sleep19:30:003
105955299161,10cyclictest1105950-21taskset19:50:163
105955299160,14cyclictest0-21swapper/320:30:243
105955299160,13cyclictest0-21swapper/320:40:173
14552482154,7sleep11455262-21sh23:46:421
14406802151,9sleep11188358-21diskmemload23:39:561
13966582151,2sleep20-21swapper/223:11:582
13794972151,4sleep11188358-21diskmemload23:01:191
13698532151,7sleep01369907-21ntpq22:55:210
13569312151,10sleep21356942-21sh22:49:542
13556982151,5sleep11355709-21ssh22:48:051
13308022151,9sleep01188358-21diskmemload22:33:240
13308022151,9sleep01188358-21diskmemload22:33:230
12701342150,4sleep21270146-21ssh21:56:022
12629822151,2sleep20-21swapper/221:52:402
12196472151,2sleep20-21swapper/221:25:432
10600202151,4sleep01060229-21hddtemp_smartct19:10:150
105955299151,9cyclictest1076102-21taskset19:20:183
1059552991511,2cyclictest0-21swapper/320:40:013
105955299151,12cyclictest0-21swapper/319:35:013
105955299150,13cyclictest0-21swapper/319:40:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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