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2026-02-05 - 23:05
[ 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 Thu Feb 05, 2026 12:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137377022110,2sleep11373769-21ssh10:37:401
1094048212452,67sleep30-21swapper/307:09:513
1093371210588,10sleep20-21swapper/207:05:252
109373828660,10sleep10-21swapper/107:05:561
109404027653,6sleep00-21swapper/007:09:440
1094208993127,2cyclictest0-21swapper/307:59:593
1094208993126,2cyclictest0-21swapper/312:30:013
1094208993027,1cyclictest0-21swapper/308:50:133
1094208993027,1cyclictest0-21swapper/308:25:143
1094208993025,2cyclictest0-21swapper/312:20:163
1094208992925,2cyclictest0-21swapper/310:40:253
1094208992724,1cyclictest0-21swapper/308:10:133
1094208992623,1cyclictest0-21swapper/312:00:203
1094208992620,3cyclictest0-21swapper/310:15:113
15574582251,10sleep11223582-21diskmemload12:26:241
1094208992522,1cyclictest0-21swapper/311:50:143
1094208992522,1cyclictest0-21swapper/308:40:123
1094208992521,2cyclictest0-21swapper/310:05:143
1094208992521,2cyclictest0-21swapper/309:10:143
12489712240,2sleep134-21ksoftirqd/109:25:121
109420899242,15cyclictest1282196-21taskset09:44:413
1094208992421,1cyclictest0-21swapper/312:20:013
12483882230,3sleep2421rcuc/209:25:002
109420899239,2cyclictest0-21swapper/310:14:363
109420899238,3cyclictest0-21swapper/309:20:183
109420899232,16cyclictest1257002-21turbostat09:30:003
1094208992320,2cyclictest0-21swapper/310:35:253
1094208992319,2cyclictest0-21swapper/309:30:213
1094208992319,2cyclictest0-21swapper/307:35:173
109420899231,18cyclictest1315824-21taskset10:04:303
109420899231,18cyclictest0-21swapper/311:20:583
109420899231,17cyclictest1506205-21chrt11:55:263
109420899226,9cyclictest13510732sleep310:25:163
109420899223,15cyclictest1567462-21taskset12:33:593
1094208992218,2cyclictest0-21swapper/309:35:123
1094208992217,2cyclictest0-21swapper/311:25:163
109420899221,20cyclictest67150irq/132-enp1s0-TxRx-312:12:433
109420899221,20cyclictest67150irq/132-enp1s0-TxRx-312:12:423
109420899221,17cyclictest1576428-21turbostat12:40:013
11380592211,14sleep01138101-21ntpq07:45:200
109420899214,13cyclictest0-21swapper/310:30:453
109420899213,14cyclictest1405953-21chrt10:55:423
109420899212,16cyclictest67150irq/132-enp1s0-TxRx-311:45:103
1094208992118,1cyclictest0-21swapper/311:14:053
1094208992118,1cyclictest0-21swapper/311:14:043
1094208992118,1cyclictest0-21swapper/309:54:053
1094208992116,3cyclictest0-21swapper/311:18:093
15594672201,4sleep01223582-21diskmemload12:29:240
15148522201,3sleep00-21swapper/012:00:450
14486282201,3sleep00-21swapper/011:21:490
13994402201,3sleep20-21swapper/210:53:162
13333092201,4sleep21333326-21latency_hist10:15:002
1094208992017,1cyclictest0-21swapper/311:43:103
1094208992017,1cyclictest0-21swapper/310:54:593
1094208992017,1cyclictest0-21swapper/310:20:163
1094208992017,1cyclictest0-21swapper/308:05:003
1094208992017,1cyclictest0-21swapper/307:30:123
1094208992016,2cyclictest0-21swapper/311:32:303
1094208992016,2cyclictest0-21swapper/309:17:483
1094208992016,2cyclictest0-21swapper/309:17:473
1094208992015,2cyclictest0-21swapper/311:00:253
109420899201,15cyclictest1290910-21chrt09:49:423
109420899201,14cyclictest1472691-21chrt11:35:263
15266512191,3sleep20-21swapper/212:10:052
15266512191,3sleep20-21swapper/212:10:052
15059502191,3sleep20-21swapper/211:55:262
109420899192,11cyclictest1106333-21taskset07:15:313
1094208991916,1cyclictest0-21swapper/311:06:583
1094208991916,1cyclictest0-21swapper/308:20:113
1094208991913,4cyclictest67150irq/132-enp1s0-TxRx-310:45:113
149751921812,3sleep11497557-21ssh11:50:241
12634312181,11sleep11223582-21diskmemload09:32:131
109420899184,12cyclictest0-21swapper/307:10:123
1094208991812,4cyclictest67150irq/132-enp1s0-TxRx-308:45:103
1094208991810,4cyclictest12170852sleep309:00:173
14578592171,3sleep10-21swapper/111:27:591
14575452171,3sleep20-21swapper/211:27:322
13907952171,3sleep10-21swapper/110:47:551
13305212171,9sleep11330532-21ssh10:11:021
12822882171,5sleep21223582-21diskmemload09:44:492
12807012171,3sleep11280715-21ssh09:42:321
12634822171,1sleep20-21swapper/209:32:192
109420899178,6cyclictest1518057-21taskset12:05:003
1094208991714,1cyclictest0-21swapper/308:05:193
109420899171,10cyclictest1210863-21taskset08:55:163
109420899170,14cyclictest0-21swapper/309:55:123
15688402161,4sleep11569062-21hddtemp_smartct12:35:141
15673502161,9sleep11223582-21diskmemload12:33:511
15644822161,10sleep21564579-21/usr/sbin/munin12:30:222
14829882161,2sleep10-21swapper/111:42:581
14602222161,11sleep11460916-21kthreadcore11:30:171
14327042161,10sleep00-21swapper/011:12:590
14327042161,10sleep00-21swapper/011:12:590
13402362161,3sleep00-21swapper/010:17:520
12964092161,10sleep21296421-21ssh09:50:352
12394022161,5sleep11239416-21ssh09:18:561
12394022161,5sleep11239416-21ssh09:18:551
11858462161,3sleep11185854-21sendmail_mailtr08:30:251
109420899163,9cyclictest1218493-21chrt09:05:023
109420899163,9cyclictest1170431-21taskset08:16:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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