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2026-02-06 - 22:43
[ 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 #a, slot #5

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot5s.osadl.org (updated Fri Feb 06, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811640,0rcu_preempt19-21ksoftirqd/107:19:501
811140,0rcu_preempt54-21kswapd011:14:440
811020,0rcu_preempt3-21ksoftirqd/011:29:530
81930,0rcu_preempt3-21ksoftirqd/011:19:450
81890,0rcu_preempt3-21ksoftirqd/010:39:470
81830,0rcu_preempt9317-21apt-get09:59:460
81810,0rcu_preempt3-21ksoftirqd/011:59:450
81810,0rcu_preempt19-21ksoftirqd/111:59:341
81810,0rcu_preempt19-21ksoftirqd/111:59:341
81790,0rcu_preempt17276-21kworker/1:111:14:511
81770,0rcu_preempt3-21ksoftirqd/009:24:480
81710,0rcu_preempt3-21ksoftirqd/012:14:420
81700,0rcu_preempt54-21kswapd008:05:000
81690,0rcu_preempt19-21ksoftirqd/109:49:581
81680,0rcu_preempt3-21ksoftirqd/009:09:510
81660,0rcu_preempt3-21ksoftirqd/010:12:140
81660,0rcu_preempt3-21ksoftirqd/009:44:590
81620,0rcu_preempt8453-1kworker/0:0H09:38:240
81610,0rcu_preempt3-21ksoftirqd/010:24:550
81610,0rcu_preempt19-21ksoftirqd/109:39:341
81590,0rcu_preempt3-21ksoftirqd/011:50:020
81590,0rcu_preempt3-21ksoftirqd/008:19:490
81590,0rcu_preempt3-21ksoftirqd/008:00:010
81590,0rcu_preempt29186-1kworker/1:3H12:31:491
81590,0rcu_preempt19-21ksoftirqd/109:19:551
1624399591,0cyclictest28922-21df_inode09:14:500
10050590,0irq/346-484840021550-1kworker/0:1H10:14:450
10050570,0irq/346-48484000-21swapper/010:23:150
81560,0rcu_preempt19-21ksoftirqd/111:28:271
10050560,0irq/346-484840028204-1kworker/0:1H11:26:230
10050550,0irq/346-484840054-21kswapd012:38:110
9950540,0irq/345-4848400158812sleep111:12:501
10050540,0irq/346-48484005397-1kworker/0:1H12:07:200
10050540,0irq/346-484840019536-21munin-run07:19:340
81530,0rcu_preempt6596-1kworker/1:0H08:19:341
81530,0rcu_preempt27300-1kworker/1:2H10:51:291
10050530,0irq/346-484840054-21kswapd012:20:450
10050520,0irq/346-484840054-21kswapd011:13:030
10050520,0irq/346-484840054-21kswapd010:50:460
10050510,0irq/346-484840054-21kswapd009:21:160
10050510,0irq/346-484840021392-1kworker/0:2H09:39:470
10050510,0irq/346-484840021392-1kworker/0:2H09:39:470
10050510,0irq/346-484840012323-21ssh10:36:140
81500,0rcu_preempt3-21ksoftirqd/011:34:440
81500,0rcu_preempt11408-21munin-node0
4350500,0irq/32-4330000023396-21dropbear11:19:481
10050500,0irq/346-4848400851-21rngd10:47:310
10050500,0irq/346-484840054-21kswapd012:32:380
10050500,0irq/346-484840054-21kswapd010:56:050
10050500,0irq/346-484840054-21kswapd010:56:050
10050500,0irq/346-484840054-21kswapd009:51:320
9950490,0irq/345-4848400851-21rngd10:29:490
81490,0rcu_preempt3-21ksoftirqd/007:04:580
10050490,0irq/346-484840054-21kswapd011:00:130
81480,0rcu_preempt639-21munin-node1
81480,0rcu_preempt19-21ksoftirqd/111:59:561
81480,0rcu_preempt19-21ksoftirqd/110:47:421
4350480,0irq/32-4330000015423-21dropbear08:44:470
4350480,0irq/32-4330000013780-21dropbear08:39:470
9950470,0irq/345-484840028204-1kworker/0:1H11:39:430
81470,0rcu_preempt3-21ksoftirqd/011:44:520
81470,0rcu_preempt19-21ksoftirqd/112:19:531
4350470,0irq/32-4330000012118-21dropbear08:34:470
1624399471,0cyclictest19530-21ping07:39:380
10050470,0irq/346-484840022356-21irqstats12:24:550
10050470,0irq/346-484840019530-21ping07:36:240
10050460,0irq/346-48484006875-21sendmail-msp08:19:350
10050460,0irq/346-48484004255-21rm09:54:450
10050460,0irq/346-484840016219-1kworker/0:0H07:19:360
81450,0rcu_preempt19-21ksoftirqd/110:59:341
81450,0rcu_preempt19-21ksoftirqd/110:59:341
102932450,0chrt10050irq/346-484840008:29:400
102932450,0chrt10050irq/346-484840008:29:400
10050450,0irq/346-48484000-21swapper/012:12:360
81440,0rcu_preempt32453-21ping08:24:520
81440,0rcu_preempt3-21ksoftirqd/008:54:350
81440,0rcu_preempt19-21ksoftirqd/110:34:581
1599440,0migration/017264-21if_err_eth208:49:520
10050440,0irq/346-484840030909-21runrttasks07:53:230
10050440,0irq/346-484840025515-21munin-node0
10050440,0irq/346-484840025515-21munin-node0
10050440,0irq/346-484840014594-21diskstats10:04:490
10050440,0irq/346-48484000-21swapper/011:08:140
81430,0rcu_preempt19-21ksoftirqd/110:13:111
81430,0rcu_preempt19-21ksoftirqd/109:59:441
10050430,0irq/346-484840020196-21apt-get08:59:450
9950410,0irq/345-484840023339-21idleruntime-cro09:09:340
9950410,0irq/345-484840023339-21idleruntime-cro09:09:340
81410,0rcu_preempt19-21ksoftirqd/112:17:471
81410,0rcu_preempt19-21ksoftirqd/110:27:141
1624399415,0cyclictest0-21swapper/007:57:330
10050410,0irq/346-484840019530-21ping07:27:420
10050410,0irq/346-484840019530-21ping07:27:420
9950400,0irq/345-4848400851-21rngd07:09:510
9950390,0irq/345-48484003-21ksoftirqd/007:31:500
81390,0rcu_preempt19-21ksoftirqd/112:24:581
81390,0rcu_preempt19-21ksoftirqd/112:14:001
81390,0rcu_preempt19-21ksoftirqd/110:33:131
9950380,0irq/345-484840021549-1kworker/1:0H10:19:361
9950380,0irq/345-484840010632-21taskset11:39:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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