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2026-02-26 - 08:59
[ 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 Thu Feb 26, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
389609999651,54cyclictest0-21swapper/023:30:170
3896109996261,1cyclictest0-21swapper/223:26:262
389610999600,1cyclictest0-21swapper/200:02:112
3896113995452,1cyclictest0-21swapper/300:20:053
3896113995248,3cyclictest491ktimers/322:55:203
3896113995248,3cyclictest491ktimers/322:17:563
3896104995249,2cyclictest779-21runrttasks22:36:221
389611399491,18cyclictest4051743-21hddtemp_smartct21:30:133
3896109994910,33cyclictest3940168-21ntpq19:50:182
3896099994948,1cyclictest0-21swapper/019:21:490
3896099994845,3cyclictest151ktimers/023:59:370
3896109994744,2cyclictest0-21swapper/221:32:382
389610499476,39cyclictest162417-21ssh00:26:221
3896104994734,7cyclictest4133455-21sh22:16:121
3896113994643,3cyclictest491ktimers/321:25:573
3896113994643,3cyclictest491ktimers/321:25:573
3896113994642,3cyclictest491ktimers/300:25:253
3896104994618,25cyclictest777-21snmpd23:45:331
3896104994528,15cyclictest632-21wpa_supplicant22:21:401
3896113994442,1cyclictest0-21swapper/319:35:003
3896113994434,8cyclictest4016466-21diskmemload21:47:473
389611399435,29cyclictest40655492sleep321:36:533
3896113994342,1cyclictest0-21swapper/300:06:203
3896104994342,1cyclictest0-21swapper/120:49:301
3896099994320,16cyclictest137410-21sh00:12:080
3896099994111,28cyclictest3975192-21ntpq20:25:190
3896099994111,28cyclictest3975192-21ntpq20:25:190
3896113994037,2cyclictest722-21gmain22:14:253
3896113994037,2cyclictest69808-21sh23:33:273
3896113994025,2cyclictest143970-21ntpq00:15:213
389610999401,6cyclictest4074740-21ssh21:42:432
3896104994039,1cyclictest0-21swapper/120:11:551
3896104994037,2cyclictest4016466-21diskmemload23:32:271
3896113993938,1cyclictest0-21swapper/321:20:153
3896113993938,1cyclictest0-21swapper/319:55:183
3896109993936,2cyclictest588-21gpm00:15:102
3896109993934,3cyclictest4016466-21diskmemload22:54:312
3896104993938,1cyclictest0-21swapper/119:45:201
3896099993935,3cyclictest4167754-21sh22:35:520
3896099993935,3cyclictest151ktimers/021:18:210
3896109993830,2cyclictest4178675-21ssh22:43:502
3896109993828,2cyclictest33426-21ssh23:10:412
389610999382,35cyclictest0-21swapper/200:05:472
389611399370,30cyclictest3930265-21ntpq19:40:193
3896109993734,3cyclictest401ktimers/220:12:082
3896109993734,1cyclictest20110-21apt-get23:05:112
389610999373,26cyclictest4090156-21ssh21:50:362
3896099993734,3cyclictest151ktimers/023:54:530
3896113993634,1cyclictest3965075-21strings20:15:173
389611399360,2cyclictest0-21swapper/323:25:123
3896104993534,1cyclictest0-21swapper/119:34:191
3896104993530,4cyclictest4014437-21kworker/u16:0+xprtiod21:28:311
3896104993530,4cyclictest4014437-21kworker/u16:0+xprtiod21:28:311
389610499351,29cyclictest100886-21ntpq23:50:181
389609999352,16cyclictest0-21swapper/023:05:210
3896099993520,14cyclictest588-21gpm21:24:000
3896113993430,3cyclictest4074192-21ssh21:42:003
3896109993431,2cyclictest4065257-21sh21:36:302
389610499348,14cyclictest10234-21diskmemload22:58:441
3896104993422,6cyclictest4184614-21sh22:45:361
389610499341,25cyclictest37194-21ssh23:15:101
3896099993433,1cyclictest0-21swapper/023:40:310
389611399335,26cyclictest76198-21sh23:35:433
389611399332,29cyclictest3950742-21sed20:00:263
3896109993329,2cyclictest779-21runrttasks21:19:192
389610499334,16cyclictest33110-21kworker/u16:1+rpciod23:39:201
3896099993332,1cyclictest0-21swapper/021:14:200
3896113993221,10cyclictest4016466-21diskmemload00:32:543
389610999320,5cyclictest0-21swapper/222:14:432
3896104993211,15cyclictest4059279-21runrttasks21:34:441
389609999329,15cyclictest4145391-21sh22:25:070
3896099993229,2cyclictest779-21runrttasks00:01:530
389609999321,26cyclictest1921633-21kworker/0:1+mm_percpu_wq21:25:060
389609999321,26cyclictest1921633-21kworker/0:1+mm_percpu_wq21:25:060
3896109993130,1cyclictest0-21swapper/223:39:562
389611399308,20cyclictest92364-21ntpq23:45:203
389611399307,21cyclictest3921532-21/usr/sbin/munin19:35:213
389611399306,15cyclictest0-21swapper/322:34:483
3896109993029,1cyclictest0-21swapper/219:36:432
3896109993027,2cyclictest171401-21diskmemload00:31:572
389610999300,5cyclictest0-21swapper/200:23:122
389610999300,1cyclictest0-21swapper/222:57:032
389610499300,25cyclictest52956-21diskmemload23:23:451
389609999301,8cyclictest54203-21sh23:25:010
389611399291,23cyclictest62850irq/124-enp1s0-TxRx-023:18:213
389610499296,19cyclictest4150940-21ssh22:26:331
3896104992927,1cyclictest4016466-21diskmemload00:24:101
3896104992910,18cyclictest0-21swapper/123:04:271
389610499290,29cyclictest4154437-21kworker/u16:2+rpciod22:32:391
389609999291,22cyclictest40989382sleep021:55:540
3896113992822,2cyclictest4119015-21ssh22:09:353
3896113992813,14cyclictest103804-21sh23:53:163
389611399281,2cyclictest171rcu_preempt23:09:183
389611399280,1cyclictest0-21swapper/300:10:563
3896109992827,1cyclictest0-21swapper/221:00:402
389610999282,18cyclictest568-21dbus-daemon19:25:032
3896104992824,3cyclictest311ktimers/100:02:571
3896104992811,12cyclictest146550-21sh00:17:511
3896099992827,1cyclictest0-21swapper/021:35:180
3896099992827,1cyclictest0-21swapper/000:37:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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