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2026-02-20 - 14:38
[ 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 Fri Feb 20, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3467212216053,100sleep30-21swapper/307:09:193
34671412143126,10sleep20-21swapper/207:08:262
346700828958,10sleep10-21swapper/107:06:441
346707027756,15sleep00-21swapper/007:07:320
346736599631,21cyclictest0-21swapper/307:23:503
346736599610,2cyclictest0-21swapper/312:15:103
346736599525,17cyclictest0-21swapper/310:53:093
3467365995249,1cyclictest0-21swapper/309:28:493
3467365995047,1cyclictest0-21swapper/312:27:413
346736599480,44cyclictest63750irq/124-enp1s0-TxRx-012:33:433
37802322470,1sleep20-21swapper/210:57:462
346736599476,21cyclictest0-21swapper/310:07:323
346736599470,1cyclictest0-21swapper/311:13:473
346736599460,23cyclictest0-21swapper/309:44:053
3467365994441,1cyclictest0-21swapper/310:34:473
346736599440,35cyclictest0-21swapper/309:30:543
38465322420,5sleep20-21swapper/211:35:192
346736599420,19cyclictest63750irq/124-enp1s0-TxRx-010:43:473
346736599420,16cyclictest0-21swapper/311:25:433
3467365994137,2cyclictest0-21swapper/310:57:223
346736599410,17cyclictest0-21swapper/309:24:123
346736599388,8cyclictest0-21swapper/309:50:043
346736599386,12cyclictest0-21swapper/310:45:053
3467365993836,1cyclictest0-21swapper/307:35:123
346736599380,1cyclictest0-21swapper/311:17:173
346736599370,27cyclictest0-21swapper/312:02:313
346736599370,18cyclictest0-21swapper/311:45:513
3467365993634,1cyclictest0-21swapper/311:55:223
3467365993632,2cyclictest0-21swapper/311:00:333
346736599361,17cyclictest0-21swapper/312:07:303
346736599360,16cyclictest0-21swapper/308:40:123
3467365993532,2cyclictest0-21swapper/310:28:283
346736599350,18cyclictest0-21swapper/311:24:203
346736599350,10cyclictest0-21swapper/307:45:153
35995482340,1sleep20-21swapper/209:12:542
346736599344,16cyclictest63750irq/124-enp1s0-TxRx-010:11:363
3467365993431,1cyclictest0-21swapper/308:11:343
346736599341,30cyclictest0-21swapper/311:39:373
346736599340,20cyclictest63750irq/124-enp1s0-TxRx-011:32:303
346736599336,11cyclictest0-21swapper/309:15:283
3467365993330,1cyclictest0-21swapper/310:16:033
346736599330,19cyclictest0-21swapper/312:20:253
346736599330,16cyclictest0-21swapper/309:35:003
346736599321,25cyclictest39091592sleep312:12:563
346736599320,28cyclictest35247672sleep308:00:223
346736599320,22cyclictest63750irq/124-enp1s0-TxRx-009:45:413
346736599320,18cyclictest0-21swapper/310:35:143
37616902300,1sleep20-21swapper/210:46:162
346736599300,16cyclictest0-21swapper/310:00:423
34890552291,5sleep13489128-21awk07:25:251
3467365992926,1cyclictest0-21swapper/309:10:103
346736599291,13cyclictest0-21swapper/311:50:493
3467365992814,1cyclictest0-21swapper/308:27:463
346736599280,9cyclictest0-21swapper/312:35:043
346736599270,24cyclictest0-21swapper/311:40:073
36837422260,1sleep10-21swapper/110:00:441
346736599266,4cyclictest0-21swapper/307:15:123
346736599260,19cyclictest0-21swapper/309:59:303
346736599260,16cyclictest0-21swapper/307:50:143
346736599260,15cyclictest0-21swapper/311:08:183
3467365992523,1cyclictest0-21swapper/310:23:383
346736599251,14cyclictest63750irq/124-enp1s0-TxRx-007:10:263
346736599250,14cyclictest0-21swapper/308:20:113
37640752241,2sleep00-21swapper/010:49:220
36433702240,1sleep00-21swapper/009:39:020
346736599240,9cyclictest0-21swapper/308:05:103
39419192230,1sleep20-21swapper/212:31:062
38505482230,2sleep10-21swapper/111:39:421
37892512230,1sleep20-21swapper/211:03:192
37786832230,1sleep10-21swapper/110:55:451
346736599233,11cyclictest0-21swapper/307:30:113
37886852220,1sleep10-21swapper/111:02:341
36692302220,1sleep20-21swapper/209:54:112
37968662200,1sleep20-21swapper/211:07:042
35978002201,7sleep13592542-21diskmemload09:10:371
346736599201,10cyclictest0-21swapper/308:15:113
346736599200,9cyclictest0-21swapper/307:40:103
35865252191,5sleep03586608-21grep09:00:220
346736599190,14cyclictest0-21swapper/308:00:003
36449872181,13sleep03645274-21cut09:40:150
36353802180,1sleep20-21swapper/209:34:522
36139642181,11sleep03614108-21ntpq09:20:190
3467365991815,1cyclictest0-21swapper/309:04:343
3467365991813,3cyclictest35518272sleep308:30:113
346736599181,14cyclictest0-21swapper/308:50:123
346736599180,14cyclictest0-21swapper/307:29:443
39191242170,7sleep10-21swapper/112:19:461
38833912171,3sleep00-21swapper/011:57:520
38735932171,4sleep23592542-21diskmemload11:51:132
38672732171,3sleep20-21swapper/211:49:102
38402992171,3sleep10-21swapper/111:32:321
38132502171,4sleep10-21swapper/111:15:441
37438972170,1sleep00-21swapper/010:35:270
37096732170,14sleep00-21swapper/010:16:020
36943842171,2sleep10-21swapper/110:08:261
36847722171,3sleep20-21swapper/210:02:052
346736599171,8cyclictest0-21swapper/309:05:103
39513122160,1sleep00-21swapper/012:37:100
39282132161,11sleep03928416-21cat12:25:110
38303482160,2sleep00-21swapper/011:25:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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