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2026-02-23 - 00:38
[ 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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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 50 highest latencies:
System rackaslot5s.osadl.org (updated Sun Feb 22, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811340,0rcu_preempt3-21ksoftirqd/007:04:390
81810,0rcu_preempt2847-1kworker/1:3H10:34:461
81810,0rcu_preempt19-21ksoftirqd/111:24:351
81690,0rcu_preempt19-21ksoftirqd/110:29:191
81670,0rcu_preempt23595-21kworker/1:011:49:491
81660,0rcu_preempt19-21ksoftirqd/110:54:201
81630,0rcu_preempt19-21ksoftirqd/111:44:191
81630,0rcu_preempt19-21ksoftirqd/109:14:331
81630,0rcu_preempt19-21ksoftirqd/109:14:331
9950590,0irq/345-484840019-21ksoftirqd/112:29:361
10050590,0irq/346-484840032592-1kworker/0:1H11:05:420
10050590,0irq/346-484840024525-1kworker/0:2H12:35:030
9950580,0irq/345-484840019-21ksoftirqd/111:48:111
10050570,0irq/346-484840010067-1kworker/0:1H11:11:370
81560,0rcu_preempt19-21ksoftirqd/112:19:341
81560,0rcu_preempt19-21ksoftirqd/112:19:341
81560,0rcu_preempt19-21ksoftirqd/111:34:311
81550,0rcu_preempt13294-21php-cgi07:14:371
81540,0rcu_preempt19-21ksoftirqd/112:34:341
81540,0rcu_preempt19-21ksoftirqd/110:39:521
81530,0rcu_preempt19-21ksoftirqd/108:04:201
81530,0rcu_preempt19-21ksoftirqd/108:04:201
10050530,0irq/346-484840018148-1kworker/0:4H09:56:140
81520,0rcu_preempt31391-1kworker/0:1H12:06:010
10050520,0irq/346-484840028317-21ssh10:57:180
10050520,0irq/346-484840023765-1kworker/0:0H12:33:000
10050520,0irq/346-484840010424-1kworker/0:1H10:09:330
10050520,0irq/346-484840010424-1kworker/0:1H10:09:330
10050520,0irq/346-48484000-21swapper/010:41:400
10050510,0irq/346-48484005517-1kworker/0:2H10:03:330
10050510,0irq/346-484840024957-1kworker/0:0H11:39:370
10050510,0irq/346-484840018809-1kworker/0:3H12:28:040
10050510,0irq/346-484840017749-1kworker/0:2H10:49:420
10050510,0irq/346-484840017749-1kworker/0:2H10:49:420
10050510,0irq/346-484840010067-1kworker/0:1H11:14:300
10050500,0irq/346-48484002437-1kworker/0:2H11:38:050
81490,0rcu_preempt18359-21diskmemload09:39:301
10050490,0irq/346-48484006491-1kworker/0:1H08:34:360
9950480,0irq/345-4848400386-21apt-get10:29:310
9950480,0irq/345-484840013189-1kworker/1:2H09:38:491
81480,0rcu_preempt19-21ksoftirqd/109:24:191
10050480,0irq/346-484840017942-21ssh10:14:280
9950470,0irq/345-484840027651-1kworker/1:3H11:09:591
9950470,0irq/345-48484000-21swapper/010:24:300
81470,0rcu_preempt3-21ksoftirqd/007:11:220
81470,0rcu_preempt23595-21kworker/1:010:52:511
81470,0rcu_preempt23595-21kworker/1:010:52:511
10050470,0irq/346-48484003410-21ssh12:09:550
10050470,0irq/346-48484003410-21ssh12:09:550
10050470,0irq/346-484840019566-21ssh12:26:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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