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2026-01-28 - 08:22
[ 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 Wed Jan 28, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37336623430,2sleep00-21swapper/022:59:420
37336623430,2sleep00-21swapper/022:59:410
54966212471,49sleep30-21swapper/319:08:103
50968021200,2sleep0509678-21ssh00:19:030
5480728857,10sleep10-21swapper/119:06:101
5498028256,20sleep20-21swapper/219:08:212
5477027751,6sleep00-21swapper/019:05:410
55245992925,2cyclictest0-21swapper/322:25:153
51108522518,4sleep2511169-21uniq00:20:132
55245992421,1cyclictest0-21swapper/323:15:143
55245992421,1cyclictest0-21swapper/323:05:003
55245992320,1cyclictest0-21swapper/322:40:163
55245992320,1cyclictest0-21swapper/322:20:143
55245992320,1cyclictest0-21swapper/320:20:013
5524599231,18cyclictest0-21swapper/323:33:423
2401552231,8sleep2240224-21ntpq21:40:192
5524599221,7cyclictest302338-21taskset22:16:503
55245992217,2cyclictest0-21swapper/321:40:163
55245992216,3cyclictest0-21swapper/322:00:173
5524599212,12cyclictest502801-21taskset00:15:163
55245992119,1cyclictest0-21swapper/321:33:413
55245992117,2cyclictest0-21swapper/323:55:153
5524599211,16cyclictest178818-21taskset21:02:383
5524599211,16cyclictest0-21swapper/322:31:573
5524599210,17cyclictest2616472sleep321:55:113
3300072211,3sleep00-21swapper/022:34:360
5524599202,12cyclictest485202-21taskset00:05:103
5524599202,12cyclictest481616-21taskset00:00:343
5524599202,12cyclictest198018-21taskset21:15:293
55245992017,1cyclictest0-21swapper/321:52:493
55245992017,1cyclictest0-21swapper/320:30:133
55245992017,1cyclictest0-21swapper/319:50:123
55245992016,2cyclictest0-21swapper/322:57:223
55245992016,2cyclictest0-21swapper/322:57:223
55245992015,2cyclictest0-21swapper/321:25:173
55245992014,3cyclictest0-21swapper/320:24:263
5524599201,15cyclictest0-21swapper/319:40:123
5524599201,14cyclictest524454-21chrt00:26:103
5524599201,13cyclictest209757-21taskset21:24:553
5524599201,12cyclictest4486742sleep323:42:383
5524599200,17cyclictest466043-21taskset23:52:523
5524599194,12cyclictest0-21swapper/323:05:133
5524599192,12cyclictest295699-21taskset22:14:273
5524599192,11cyclictest331327-21taskset22:35:143
5524599191,8cyclictest541925-21chrt00:37:013
55245991917,1cyclictest0-21swapper/300:30:173
5524599191,15cyclictest0-21swapper/323:25:083
5524599191,15cyclictest0-21swapper/323:22:253
5524599191,14cyclictest397371-21chrt23:12:303
5524599191,14cyclictest356703-21chrt22:50:113
5524599191,14cyclictest0-21swapper/322:45:173
5524599191,14cyclictest0-21swapper/322:05:113
5524599191,14cyclictest0-21swapper/321:36:413
5524599191,13cyclictest136819-21chrt20:25:123
5524599191,12cyclictest189210-21taskset21:10:243
778412181,7sleep078079-21tail19:25:250
5524599182,11cyclictest450768-21taskset23:45:093
55245991815,2cyclictest0-21swapper/320:35:113
55245991815,1cyclictest0-21swapper/319:35:193
5524599181,14cyclictest439218-21chrt23:36:243
5524599181,14cyclictest0-21swapper/300:10:353
5524599181,13cyclictest510723-21chrt00:20:063
5524599181,13cyclictest184337-21taskset21:10:003
5524599181,13cyclictest0-21swapper/321:47:173
5364692181,11sleep0184315-21diskmemload00:35:150
5326212181,3sleep20-21swapper/200:30:552
4576922181,5sleep0184315-21diskmemload23:48:170
3608562182,10sleep0360911-21ntpq22:50:200
2589942181,3sleep10-21swapper/121:51:531
2348772181,11sleep0184315-21diskmemload21:38:560
55245991714,1cyclictest0-21swapper/320:50:183
55245991714,1cyclictest0-21swapper/319:10:153
55245991713,2cyclictest0-21swapper/320:10:173
55245991713,2cyclictest0-21swapper/319:55:163
55245991713,2cyclictest0-21swapper/319:55:153
5524599171,13cyclictest0-21swapper/320:45:213
5524599170,11cyclictest72608-21taskset19:20:303
5353952171,10sleep1184315-21diskmemload00:34:471
2605632171,3sleep00-21swapper/021:54:030
2184632171,3sleep00-21swapper/021:29:580
1464272171,4sleep0146662-21users20:30:270
5524599161,9cyclictest152612-21taskset20:40:063
55245991613,1cyclictest0-21swapper/320:00:163
55245991611,2cyclictest0-21swapper/320:55:113
5524599161,11cyclictest62702-21taskset19:15:143
5524599160,13cyclictest0-21swapper/320:05:163
5524599160,13cyclictest0-21swapper/319:25:123
5430972160,2sleep10-21swapper/100:38:411
4917032161,2sleep20-21swapper/200:07:462
4378472161,10sleep1437914-21ntpq23:35:181
4365632161,4sleep2437633-21memory23:35:152
4157742161,3sleep2184315-21diskmemload23:24:222
3967122161,11sleep1396726-21ssh23:11:381
2671882161,2sleep10-21swapper/121:56:211
55245991512,1cyclictest0-21swapper/319:30:113
5016002151,3sleep0184315-21diskmemload00:14:420
4837222151,2sleep10-21swapper/100:03:201
4600282151,9sleep0461451-21ssh23:50:170
4464032151,8sleep1446468-21ntp_states23:40:201
4377872152,7sleep0437843-21ntpq23:35:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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