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2026-02-09 - 14:17
[ 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 highest latencies:
System rackaslot5s.osadl.org (updated Mon Feb 09, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811230,0rcu_preempt4868-1kworker/0:2H21:59:460
10050840,0irq/346-484840054-21kswapd021:34:460
10050840,0irq/346-484840054-21kswapd021:34:460
10050780,0irq/346-484840054-21kswapd022:24:360
81740,0rcu_preempt19-21ksoftirqd/123:56:511
81740,0rcu_preempt0-21swapper/021:27:290
10050710,0irq/346-484840031917-1kworker/0:2H23:45:120
81700,0rcu_preempt0-21swapper/123:03:531
81690,0rcu_preempt0-21swapper/123:06:461
10050690,0irq/346-484840024331-1kworker/0:2H22:56:520
81680,0rcu_preempt19-21ksoftirqd/120:31:051
81670,0rcu_preempt19-21ksoftirqd/120:14:431
81670,0rcu_preempt19-21ksoftirqd/119:19:451
81660,0rcu_preempt851-21rngd21:29:081
10050660,0irq/346-484840027515-1kworker/0:3H22:31:290
81650,0rcu_preempt0-21swapper/122:45:451
81640,0rcu_preempt29351-1kworker/0:0H22:59:450
81640,0rcu_preempt19-21ksoftirqd/119:59:571
9950630,0irq/345-4848400171rcuc/123:59:401
81630,0rcu_preempt19-21ksoftirqd/120:26:311
81620,0rcu_preempt3-21ksoftirqd/023:37:390
10050620,0irq/346-484840054-21kswapd021:59:441
81610,0rcu_preempt19-21ksoftirqd/123:14:441
81600,0rcu_preempt3-21ksoftirqd/023:49:560
81600,0rcu_preempt3-21ksoftirqd/023:24:320
81600,0rcu_preempt3-21ksoftirqd/022:47:140
81600,0rcu_preempt3-21ksoftirqd/022:42:440
81600,0rcu_preempt19-21ksoftirqd/121:29:491
81600,0rcu_preempt19-21ksoftirqd/121:29:491
81600,0rcu_preempt19-21ksoftirqd/119:54:551
81600,0rcu_preempt19-21ksoftirqd/119:54:551
81600,0rcu_preempt12443-21ssh23:44:421
81600,0rcu_preempt0-21swapper/122:58:051
81590,0rcu_preempt3-21ksoftirqd/023:29:420
81590,0rcu_preempt3-21ksoftirqd/000:19:490
81590,0rcu_preempt19-21ksoftirqd/121:50:331
81590,0rcu_preempt19-21ksoftirqd/121:34:451
81590,0rcu_preempt19-21ksoftirqd/121:34:451
81580,0rcu_preempt3-21ksoftirqd/021:11:370
81580,0rcu_preempt19-21ksoftirqd/120:20:191
81580,0rcu_preempt19-21ksoftirqd/120:07:031
81570,0rcu_preempt54-21kswapd022:15:090
81570,0rcu_preempt19-21ksoftirqd/123:34:571
81570,0rcu_preempt19-21ksoftirqd/122:24:591
81560,0rcu_preempt3-21ksoftirqd/000:32:450
81560,0rcu_preempt19-21ksoftirqd/123:09:531
81560,0rcu_preempt19-21ksoftirqd/121:20:101
81560,0rcu_preempt19-21ksoftirqd/120:59:501
81560,0rcu_preempt19-21ksoftirqd/120:34:541
81560,0rcu_preempt19-21ksoftirqd/120:10:081
81560,0rcu_preempt19-21ksoftirqd/100:09:421
10050560,0irq/346-484840018520-21ssh23:18:010
81550,0rcu_preempt54-21kswapd023:10:010
81550,0rcu_preempt31968-21kworker/0:220:14:490
81550,0rcu_preempt19-21ksoftirqd/121:54:571
81550,0rcu_preempt19-21ksoftirqd/121:54:571
81550,0rcu_preempt19-21ksoftirqd/120:44:501
12614995538,0cyclictest12154-21sendmail-msp22:39:431
12614995534,0cyclictest0-21swapper/122:09:411
81540,0rcu_preempt3-21ksoftirqd/000:19:320
81540,0rcu_preempt19-21ksoftirqd/121:04:541
81540,0rcu_preempt19-21ksoftirqd/119:49:541
81540,0rcu_preempt19-21ksoftirqd/100:29:471
81530,0rcu_preempt3-21ksoftirqd/022:09:430
81530,0rcu_preempt19-21ksoftirqd/123:29:541
81530,0rcu_preempt19-21ksoftirqd/123:25:001
81530,0rcu_preempt19-21ksoftirqd/122:15:001
81530,0rcu_preempt19-21ksoftirqd/121:14:441
10050530,0irq/346-48484009334-21runrttasks00:14:020
81520,0rcu_preempt24189-21ssh00:28:571
81520,0rcu_preempt19-21ksoftirqd/119:39:521
81520,0rcu_preempt19-21ksoftirqd/119:09:571
12614995232,0cyclictest19718-21diskmemload00:34:441
10050520,0irq/346-484840054-21kswapd000:04:580
81510,0rcu_preempt19-21ksoftirqd/120:54:541
12614995130,0cyclictest99121ssh00:14:351
10050510,0irq/346-4848400851-21rngd21:16:130
10050510,0irq/346-4848400202812sleep121:09:491
10050510,0irq/346-484840011877-21munin-node0
81500,0rcu_preempt3-21ksoftirqd/020:59:510
81500,0rcu_preempt3-21ksoftirqd/020:19:410
81500,0rcu_preempt20312-21ssh23:19:531
81500,0rcu_preempt19-21ksoftirqd/119:30:001
12614995028,0cyclictest1432-21ssh00:05:121
10050500,0irq/346-484840054-21kswapd022:53:340
81490,0rcu_preempt3-21ksoftirqd/020:24:500
81490,0rcu_preempt3-21ksoftirqd/020:14:320
81490,0rcu_preempt29926-21kworker/0:222:36:230
81490,0rcu_preempt19-21ksoftirqd/123:49:431
81490,0rcu_preempt19-21ksoftirqd/122:34:491
81490,0rcu_preempt19-21ksoftirqd/121:44:521
81490,0rcu_preempt19-21ksoftirqd/119:14:421
12614994931,0cyclictest17155-21sendmail-msp21:39:461
12614994931,0cyclictest17155-21sendmail-msp21:39:461
10050490,0irq/346-484840054-21kswapd021:39:400
10050490,0irq/346-484840054-21kswapd021:39:400
10050490,0irq/346-484840054-21kswapd020:59:320
10050490,0irq/346-48484000-21swapper/021:22:450
81480,0rcu_preempt3-21ksoftirqd/022:04:430
81480,0rcu_preempt3-21ksoftirqd/019:59:470
81480,0rcu_preempt3-21ksoftirqd/019:24:440
81480,0rcu_preempt3-21ksoftirqd/019:24:440
81480,0rcu_preempt19-21ksoftirqd/120:49:561
81480,0rcu_preempt18226-21apt-get21:04:420
81480,0rcu_preempt15219-21ssh00:19:491
81480,0rcu_preempt10648-21awk20:39:561
12614994831,0cyclictest19718-21diskmemload22:24:211
10050480,0irq/346-484840054-21kswapd000:29:230
81470,0rcu_preempt3-21ksoftirqd/021:54:310
81470,0rcu_preempt3-21ksoftirqd/021:34:330
81470,0rcu_preempt3-21ksoftirqd/021:34:330
81470,0rcu_preempt3-21ksoftirqd/019:14:410
81470,0rcu_preempt19-21ksoftirqd/123:39:501
81470,0rcu_preempt19-21ksoftirqd/119:24:541
81470,0rcu_preempt19-21ksoftirqd/119:24:541
12614994731,0cyclictest3257-21ntp_states22:29:561
12614994729,0cyclictest20979-21apt-get19:34:431
10050470,0irq/346-484840054-21kswapd019:59:330
10050470,0irq/346-484840054-21kswapd019:59:330
10050470,0irq/346-484840025828-21ssh23:57:460
10050470,0irq/346-48484002239-21munin-run00:39:320
81460,0rcu_preempt3-21ksoftirqd/023:24:430
10050460,0irq/346-484840054-21kswapd023:40:470
10050460,0irq/346-484840022463-1kworker/0:0H19:39:440
10050460,0irq/346-484840015585-1kworker/0:2H19:19:430
10050460,0irq/346-48484000-21swapper/023:06:110
81450,0rcu_preempt4725-21kworker/0:021:48:510
81450,0rcu_preempt3-21ksoftirqd/022:19:380
81450,0rcu_preempt3-21ksoftirqd/020:34:420
81450,0rcu_preempt3-21ksoftirqd/020:29:590
4350450,0irq/32-4330000015903-21ping19:44:480
12614994530,0cyclictest15903-21ping19:45:001
12614994529,0cyclictest10377-21if_err_eth222:04:511
81440,0rcu_preempt3-21ksoftirqd/023:59:440
81440,0rcu_preempt3-21ksoftirqd/021:55:020
81440,0rcu_preempt3-21ksoftirqd/021:55:020
12614994425,0cyclictest22397-21apt-get22:49:441
10050440,0irq/346-484840020750-21sshd19:33:460
9950430,0irq/345-48484000-21swapper/019:49:430
81430,0rcu_preempt3-21ksoftirqd/020:53:500
81430,0rcu_preempt0-21swapper/020:44:460
9950420,0irq/345-48484000-21swapper/019:39:330
81410,0rcu_preempt30860-21apt-get20:04:430
81400,0rcu_preempt3-21ksoftirqd/019:09:460
12614994025,0cyclictest12287-1kworker/1:0H19:09:321
10050400,0irq/346-48484000-21swapper/020:39:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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