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2026-01-29 - 06:24
[ 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 Jan 29, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255216421880,2sleep00-21swapper/021:30:490
2383044212657,64sleep30-21swapper/319:09:033
26995512980,2sleep00-21swapper/022:59:400
238283128960,13sleep00-21swapper/019:06:210
238300728555,10sleep10-21swapper/119:08:341
238297528469,9sleep20-21swapper/219:08:102
26403332330,2sleep10-21swapper/122:24:301
26218612271,10sleep12512175-21diskmemload22:12:241
2383238992420,2cyclictest0-21swapper/321:47:223
238323899241,18cyclictest2721906-21taskset23:10:343
238323899241,12cyclictest2596712-21chrt21:58:183
28284012236,8sleep12829915-21tr00:15:151
238323899232,13cyclictest2611884-21taskset22:05:383
2383238992320,1cyclictest0-21swapper/320:15:013
238323899231,18cyclictest0-21swapper/300:28:233
238323899222,12cyclictest2572017-21taskset21:44:313
2383238992219,1cyclictest0-21swapper/300:30:133
2383238992217,3cyclictest0-21swapper/323:20:173
2383238992212,7cyclictest67150irq/132-enp1s0-TxRx-322:31:243
238323899212,14cyclictest2588280-21taskset21:53:333
2383238992118,1cyclictest0-21swapper/320:55:163
2383238992117,2cyclictest0-21swapper/321:15:173
238323899211,15cyclictest2827132-21turbostat00:15:003
2383238992110,5cyclictest27294822sleep323:15:193
28145802201,5sleep02814680-21ntpq00:05:200
28145802201,5sleep02814680-21ntpq00:05:190
238323899208,9cyclictest2448197-21chrt20:08:073
238323899201,9cyclictest2637441-21chrt22:20:273
238323899201,15cyclictest0-21swapper/323:36:133
238323899201,14cyclictest0-21swapper/321:10:103
238323899201,14cyclictest0-21swapper/300:35:293
28499352191,2sleep20-21swapper/200:26:062
28413442191,4sleep02512175-21diskmemload00:20:470
238323899197,8cyclictest2552441-21taskset21:31:113
238323899192,12cyclictest2809184-21taskset00:03:533
238323899192,12cyclictest2809184-21taskset00:03:533
238323899192,11cyclictest2708697-21taskset23:05:113
2383238991916,1cyclictest0-21swapper/319:25:113
2383238991916,1cyclictest0-21swapper/300:21:063
2383238991915,2cyclictest0-21swapper/323:55:173
2383238991915,2cyclictest0-21swapper/323:40:123
2383238991915,2cyclictest0-21swapper/323:00:173
2383238991915,2cyclictest0-21swapper/321:25:133
238323899191,15cyclictest2689531-21chrt22:52:383
238323899191,14cyclictest2757617-21chrt23:33:073
238323899191,14cyclictest2432636-21sleep19:55:003
238323899191,14cyclictest0-21swapper/323:51:033
238323899191,14cyclictest0-21swapper/322:12:053
2383238991911,4cyclictest0-21swapper/321:20:193
238323899191,14cyclictest0-21swapper/320:54:563
238323899191,13cyclictest0-21swapper/320:40:583
238323899190,16cyclictest67150irq/132-enp1s0-TxRx-322:55:193
28164902181,3sleep20-21swapper/200:07:022
28164902181,3sleep20-21swapper/200:07:022
27060082181,4sleep12512175-21diskmemload23:01:511
26720802181,4sleep02512175-21diskmemload22:41:400
26033712181,2sleep10-21swapper/122:00:411
25607592180,1chrt2560758-21ssh21:35:562
24157862181,11sleep02415875-21ntpq19:35:180
23922142181,12sleep22393977-21kthreadcore19:15:172
238323899188,8cyclictest2469712-21turbostat20:34:563
238323899182,11cyclictest2815439-21taskset00:05:303
238323899182,11cyclictest2815439-21taskset00:05:303
238323899182,11cyclictest2749659-21taskset23:28:503
238323899182,10cyclictest2441505-21taskset20:00:173
2383238991815,2cyclictest0-21swapper/300:15:013
2383238991814,2cyclictest0-21swapper/322:40:223
2383238991814,2cyclictest0-21swapper/322:25:133
2383238991814,2cyclictest0-21swapper/319:40:173
2383238991812,3cyclictest0-21swapper/323:47:003
238323899181,14cyclictest2604352-21taskset22:01:593
238323899181,14cyclictest0-21swapper/322:35:393
238323899181,13cyclictest0-21swapper/322:15:093
2383238991810,5cyclictest0-21swapper/322:47:243
238323899180,14cyclictest0-21swapper/321:35:453
28669832171,11sleep02866994-21ssh00:36:060
27663692171,3sleep10-21swapper/123:38:111
26055002170,3sleep20-21swapper/222:03:352
25936992171,9sleep02593850-21ntpq21:55:190
25369292171,3sleep00-21swapper/021:23:160
25361882171,11sleep12512175-21diskmemload21:22:171
2383238991714,1cyclictest0-21swapper/321:00:153
2383238991713,2cyclictest0-21swapper/320:15:173
2383238991711,3cyclictest2480536-21turbostat20:40:013
238323899171,12cyclictest2406583-21chrt19:30:113
238323899170,13cyclictest0-21swapper/320:25:123
27744782160,3sleep014-21ksoftirqd/023:42:490
27504902161,9sleep12750550-21munin-run23:30:011
26824932161,2sleep10-21swapper/122:49:361
26322212161,4sleep01-21systemd22:20:010
26131422160,1sleep00-21swapper/022:07:220
26123542161,10sleep12612365-21ssh22:06:181
25458472161,4sleep02512175-21diskmemload21:28:480
25270122161,2sleep10-21swapper/121:16:481
2383238991613,1cyclictest0-21swapper/319:55:173
238323899161,12cyclictest0-21swapper/319:10:113
238323899160,13cyclictest0-21swapper/321:05:153
238323899160,13cyclictest0-21swapper/320:20:213
28618952151,9sleep20-21swapper/200:35:122
28442542151,10sleep12844332-21date00:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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