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2026-02-04 - 10:08
[ 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 Wed Feb 04, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811160,0rcu_preempt3-21ksoftirqd/022:14:540
81950,0rcu_preempt9043-21kworker/0:120:03:520
81870,0rcu_preempt3-21ksoftirqd/000:25:030
81820,0rcu_preempt3-21ksoftirqd/023:21:210
81820,0rcu_preempt3-21ksoftirqd/023:10:420
81800,0rcu_preempt3-21ksoftirqd/023:25:490
81790,0rcu_preempt3-21ksoftirqd/021:24:470
81790,0rcu_preempt1542-21apt-get20:09:470
81780,0rcu_preempt3-21ksoftirqd/022:53:400
81760,0rcu_preempt0-21swapper/023:43:390
10050750,0irq/346-48484004485-21ssh00:39:371
81740,0rcu_preempt3-21ksoftirqd/021:46:350
81730,0rcu_preempt3-21ksoftirqd/021:38:040
81720,0rcu_preempt3-21ksoftirqd/021:59:480
81710,0rcu_preempt3-21ksoftirqd/019:45:090
9950690,0irq/345-4848400181ktimersoftd/122:29:511
81690,0rcu_preempt3-21ksoftirqd/021:39:450
81680,0rcu_preempt54-21kswapd021:58:100
10050660,0irq/346-484840019225-1kworker/0:3H21:10:460
9950650,0irq/345-4848400181ktimersoftd/122:59:451
10050650,0irq/346-484840023036-21taskset21:10:321
9950640,0irq/345-4848400181ktimersoftd/121:31:171
81630,0rcu_preempt3-21ksoftirqd/022:46:200
9950620,0irq/345-4848400181ktimersoftd/123:21:291
9950620,0irq/345-4848400171rcuc/123:48:301
81620,0rcu_preempt3-21ksoftirqd/023:36:510
81620,0rcu_preempt11164-21ssh22:35:530
10050620,0irq/346-484840028966-21ssh22:54:351
10050620,0irq/346-484840011861-21ssh23:41:331
9950610,0irq/345-4848400171rcuc/100:14:261
9950610,0irq/345-4848400171rcuc/100:14:261
81610,0rcu_preempt54-21kswapd021:49:281
81610,0rcu_preempt19-21ksoftirqd/122:23:501
10050610,0irq/346-48484001206-21rs:main1
10050610,0irq/346-48484000-21swapper/119:59:561
81600,0rcu_preempt3-21ksoftirqd/022:19:380
81600,0rcu_preempt3-21ksoftirqd/022:04:500
81600,0rcu_preempt3-21ksoftirqd/000:02:500
10050600,0irq/346-4848400181ktimersoftd/121:56:441
9950590,0irq/345-4848400181ktimersoftd/121:39:181
9950590,0irq/345-4848400171rcuc/121:28:001
9950590,0irq/345-48484001405999cyclictest23:05:031
81590,0rcu_preempt3-21ksoftirqd/022:42:000
81590,0rcu_preempt3-21ksoftirqd/022:34:170
81590,0rcu_preempt19-21ksoftirqd/123:52:551
10050590,0irq/346-4848400171rcuc/122:39:531
81580,0rcu_preempt3-21ksoftirqd/000:07:350
9950570,0irq/345-4848400171rcuc/121:39:551
9950570,0irq/345-48484001405999cyclictest00:16:511
9950570,0irq/345-48484001405999cyclictest00:16:511
81570,0rcu_preempt54-21kswapd020:04:400
81570,0rcu_preempt19-21ksoftirqd/122:25:451
81570,0rcu_preempt19-21ksoftirqd/119:39:321
81570,0rcu_preempt19-21ksoftirqd/100:08:091
81560,0rcu_preempt3-21ksoftirqd/023:54:510
81560,0rcu_preempt19-21ksoftirqd/123:25:151
9950550,0irq/345-484840027547-21munin-node0
9950550,0irq/345-4848400181ktimersoftd/121:24:181
9950550,0irq/345-4848400171rcuc/122:05:211
9950550,0irq/345-4848400171rcuc/121:52:181
10050550,0irq/346-484840027085-21ssh00:29:461
9950540,0irq/345-4848400181ktimersoftd/122:45:061
9950540,0irq/345-4848400181ktimersoftd/122:18:051
9950540,0irq/345-4848400181ktimersoftd/100:00:521
9950540,0irq/345-4848400171rcuc/100:23:251
9950540,0irq/345-48484001405999cyclictest22:35:041
81540,0rcu_preempt19-21ksoftirqd/119:46:001
10050540,0irq/346-484840021468-1kworker/1:2H23:55:441
10050540,0irq/346-484840014205-1kworker/1:0H22:09:581
9950530,0irq/345-4848400181ktimersoftd/123:31:281
9950530,0irq/345-484840017094-21apt-get00:19:490
81530,0rcu_preempt3-21ksoftirqd/021:19:540
10050530,0irq/346-484840023832-1kworker/1:0H21:14:441
10050530,0irq/346-48484000-21swapper/123:34:491
9950520,0irq/345-4848400181ktimersoftd/100:28:551
9950520,0irq/345-4848400171rcuc/123:15:281
9950520,0irq/345-4848400171rcuc/123:11:351
81520,0rcu_preempt3-21ksoftirqd/023:07:580
81520,0rcu_preempt17347-21ping19:19:560
10050520,0irq/346-484840054-21kswapd022:58:511
10050520,0irq/346-484840023637-21ssh23:53:480
10050510,0irq/346-48484000-21swapper/021:50:530
9950500,0irq/345-484840018025-21apt-get20:59:490
9950500,0irq/345-48484001405999cyclictest20:59:391
9950500,0irq/345-48484000-21swapper/020:39:480
81500,0rcu_preempt3-21ksoftirqd/022:24:540
81500,0rcu_preempt3-21ksoftirqd/019:54:490
81500,0rcu_preempt19-21ksoftirqd/120:18:141
10050500,0irq/346-484840014507-21ssh00:16:350
10050500,0irq/346-484840014507-21ssh00:16:350
9950490,0irq/345-48484000-21swapper/023:18:470
81490,0rcu_preempt3-21ksoftirqd/021:04:550
81490,0rcu_preempt3-21ksoftirqd/019:04:510
81490,0rcu_preempt3-21ksoftirqd/000:34:560
81490,0rcu_preempt16943-21df_abs22:09:500
10050490,0irq/346-48484009028-21ssh21:29:480
10050490,0irq/346-4848400476-21ssh22:58:130
10050490,0irq/346-48484003344-21ssh23:00:220
10050490,0irq/346-484840024105-1kworker/0:2H00:30:310
9950480,0irq/345-484840024083-21apt-get19:39:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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