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2026-02-18 - 02:13
[ 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 Wed Feb 18, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3961747216051,104sleep30-21swapper/319:08:453
396176928262,14sleep00-21swapper/019:09:030
396151428165,10sleep10-21swapper/119:05:481
396169328062,12sleep20-21swapper/219:08:042
3961992995755,1cyclictest0-21swapper/320:25:203
3961992995552,1cyclictest0-21swapper/323:49:233
3961992995451,1cyclictest0-21swapper/323:58:193
3961992995451,1cyclictest0-21swapper/323:58:183
3961992995451,1cyclictest0-21swapper/323:06:453
3961992995451,1cyclictest0-21swapper/323:06:443
3961992995451,1cyclictest0-21swapper/322:45:303
396199299540,27cyclictest0-21swapper/322:23:553
3961992995350,1cyclictest0-21swapper/321:37:523
396199299531,17cyclictest0-21swapper/322:16:203
3961992995249,1cyclictest0-21swapper/322:32:143
3961992995148,1cyclictest0-21swapper/323:53:063
3961992995048,1cyclictest0-21swapper/322:39:253
3961992995047,1cyclictest0-21swapper/322:10:363
3961992995047,1cyclictest0-21swapper/321:44:183
3961992995047,1cyclictest0-21swapper/321:30:303
3961992994846,1cyclictest0-21swapper/323:02:063
3961992994845,1cyclictest0-21swapper/323:20:533
3961992994845,1cyclictest0-21swapper/321:24:333
3961992994845,1cyclictest0-21swapper/321:24:323
3961992994845,1cyclictest0-21swapper/300:12:143
3961992994744,1cyclictest0-21swapper/323:18:143
3961992994741,1cyclictest0-21swapper/322:25:573
396199299466,19cyclictest0-21swapper/300:35:213
3961992994644,1cyclictest0-21swapper/300:21:313
3961992994542,1cyclictest0-21swapper/322:06:103
3961992994542,1cyclictest0-21swapper/321:59:203
3961992994441,1cyclictest0-21swapper/323:40:303
3961992994411,16cyclictest0-21swapper/323:35:173
3961992994340,1cyclictest0-21swapper/319:32:133
3961992994340,1cyclictest0-21swapper/300:08:143
3961992994336,1cyclictest0-21swapper/322:03:243
3961992994321,10cyclictest0-21swapper/300:16:123
396199299430,23cyclictest63750irq/124-enp1s0-TxRx-022:41:143
3961992994239,1cyclictest0-21swapper/321:47:133
3961992994239,1cyclictest0-21swapper/320:45:143
3961992994228,11cyclictest0-21swapper/300:03:413
396199299420,17cyclictest0-21swapper/323:31:203
2411472420,1sleep20-21swapper/200:38:142
502772410,2sleep10-21swapper/122:43:111
3961992994139,1cyclictest0-21swapper/323:14:333
3961992994138,1cyclictest0-21swapper/323:27:093
3961992994037,1cyclictest0-21swapper/322:56:483
3961992994037,1cyclictest0-21swapper/319:55:163
3961992994020,13cyclictest0-21swapper/322:54:143
396199299400,34cyclictest0-21swapper/321:52:153
3961992993936,1cyclictest0-21swapper/321:03:453
3961992993928,8cyclictest0-21swapper/321:19:493
3961992993827,2cyclictest0-21swapper/300:26:193
2080552380,1sleep20-21swapper/200:18:092
396199299372,32cyclictest4072603-21turbostat20:59:563
3961992993634,1cyclictest0-21swapper/321:14:093
3961992993633,1cyclictest0-21swapper/320:40:203
396199299360,21cyclictest0-21swapper/321:26:503
3961992993532,1cyclictest0-21swapper/319:27:343
2384702350,18sleep1156868-21kworker/u16:2+kvfree_rcu_reclaim00:35:211
3961992993431,1cyclictest0-21swapper/320:05:203
396199299340,25cyclictest0-21swapper/320:19:573
2322862340,1sleep20-21swapper/200:32:242
3961992993330,1cyclictest0-21swapper/320:21:343
3961992993330,1cyclictest0-21swapper/320:21:333
396199299325,10cyclictest0-21swapper/319:40:173
3961992993229,1cyclictest0-21swapper/300:32:533
3961992993128,2cyclictest0-21swapper/319:10:153
3961992993121,1cyclictest0-21swapper/320:10:153
41601882290,1sleep10-21swapper/121:51:571
3961992992926,1cyclictest0-21swapper/319:21:543
3961992992926,1cyclictest0-21swapper/319:21:533
396199299280,16cyclictest63750irq/124-enp1s0-TxRx-020:50:153
3961992992725,1cyclictest0-21swapper/319:45:223
3961992992724,1cyclictest0-21swapper/319:50:213
77862260,1sleep10-21swapper/122:17:031
396199299260,14cyclictest0-21swapper/320:00:153
2315082260,1sleep00-21swapper/000:31:180
497412250,1sleep20-21swapper/222:42:252
40468682250,1sleep30-21swapper/320:30:023
396199299250,12cyclictest0-21swapper/319:35:123
993062240,1sleep10-21swapper/123:11:291
899562230,1sleep10-21swapper/123:05:251
899562230,1sleep10-21swapper/123:05:251
41927842230,1sleep10-21swapper/122:10:561
396199299233,17cyclictest63750irq/124-enp1s0-TxRx-019:16:323
3961992992319,2cyclictest0-21swapper/321:05:113
41122842220,2sleep00-21swapper/021:24:140
41122842220,2sleep00-21swapper/021:24:130
1428432211,3sleep00-21swapper/023:39:300
590872200,1sleep20-21swapper/222:48:252
41048322190,1sleep20-21swapper/221:20:072
41048322190,1sleep20-21swapper/221:20:062
3961992991816,1cyclictest0-21swapper/320:35:143
2314692181,4sleep14088041-21diskmemload00:31:151
2076762181,3sleep00-21swapper/000:17:360
1926522181,3sleep10-21swapper/100:09:181
1758452181,3sleep14088041-21diskmemload23:59:161
1758452181,3sleep14088041-21diskmemload23:59:161
1652762181,3sleep20-21swapper/223:50:522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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