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2026-02-22 - 14:25
[ 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 Sun Feb 22, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81770,0rcu_preempt5104-21ssh21:14:310
81740,0rcu_preempt3-21ksoftirqd/022:05:270
81730,0rcu_preempt3-21ksoftirqd/022:19:260
81730,0rcu_preempt3-21ksoftirqd/021:59:450
81720,0rcu_preempt3-21ksoftirqd/021:47:400
10050720,0irq/346-484840054-21kswapd021:35:400
81710,0rcu_preempt3-21ksoftirqd/021:33:130
81700,0rcu_preempt22421-1kworker/0:0H22:39:480
81690,0rcu_preempt19-21ksoftirqd/121:43:401
81690,0rcu_preempt19-21ksoftirqd/121:43:401
81680,0rcu_preempt3-21ksoftirqd/023:46:040
81680,0rcu_preempt25112-21cyclictest00:29:380
81670,0rcu_preempt24314-21df_abs20:44:320
81670,0rcu_preempt18732-1ssh21:27:530
81660,0rcu_preempt851-21rngd21:57:060
81660,0rcu_preempt8240-21ssh21:49:440
2511399664,0cyclictest0-21swapper/022:17:420
2511399661,0cyclictest0-21swapper/023:04:370
2511399652,0cyclictest32246-21apt-get23:19:300
2511399652,0cyclictest0-21swapper/022:45:130
2511399652,0cyclictest0-21swapper/000:24:180
25113996514,0cyclictest166862sleep023:35:520
2511399642,0cyclictest20339-21missed_timers23:39:430
81630,0rcu_preempt3-21ksoftirqd/000:34:370
2511399637,0cyclictest14363-21munin-run23:34:190
81620,0rcu_preempt6010-21apt-get19:49:300
81620,0rcu_preempt3-21ksoftirqd/000:24:480
81620,0rcu_preempt29663-21meminfo20:59:411
2511399628,0cyclictest31060-21processes21:39:490
2511399628,0cyclictest31060-21processes21:39:490
2511399622,0cyclictest28284-21ntp_kernel_pll_22:09:460
2511399621,0cyclictest22775-21cat23:09:390
2511399621,0cyclictest0-21swapper/021:21:130
81610,0rcu_preempt19-21ksoftirqd/121:24:311
2511399616,0cyclictest12471-1kworker/0:3H22:27:550
2511399615,0cyclictest14599-1kworker/0:0H00:10:570
2511399612,0cyclictest7831-21munin-node0
2511399612,0cyclictest0-21swapper/022:33:210
2511399612,0cyclictest0-21swapper/021:14:120
2511399612,0cyclictest0-21swapper/000:17:210
25113996114,0cyclictest10216-21seq22:56:530
2511399611,0cyclictest32218-21diskmemload00:04:460
81600,0rcu_preempt3-21ksoftirqd/020:23:230
81600,0rcu_preempt19-21ksoftirqd/122:14:311
81600,0rcu_preempt19-21ksoftirqd/120:49:351
2511399601,0cyclictest29854-21ssh23:16:330
2511399601,0cyclictest28389-21cron19:19:200
2511399601,0cyclictest22057-21runrttasks22:35:580
2511399597,0cyclictest0-21swapper/019:24:330
2511399592,0cyclictest0-21swapper/023:02:090
2511399591,0cyclictest5596-21munin-node0
2511399591,0cyclictest2145-21latency_hist22:49:200
10050590,0irq/346-484840054-21kswapd023:53:491
10050590,0irq/346-484840054-21kswapd021:49:441
10050590,0irq/346-484840054-21kswapd000:14:001
81580,0rcu_preempt3-21ksoftirqd/021:04:500
2511399582,0cyclictest29479-21ssh23:49:300
2511399582,0cyclictest27421-21apt20:54:300
2511399582,0cyclictest0-21swapper/020:24:300
10050580,0irq/346-484840054-21kswapd023:34:451
81570,0rcu_preempt6241-21users22:19:471
81570,0rcu_preempt10321-21dropbear21:19:331
2511399578,0cyclictest2012-21apt-get23:54:290
10050570,0irq/346-484840015650-1kworker/1:2H22:35:321
2511399562,0cyclictest9885-21munin-node0
2511399562,0cyclictest0-21swapper/020:14:460
2511399562,0cyclictest0-21swapper/019:44:390
2511399562,0cyclictest0-21swapper/019:39:310
10050560,0irq/346-484840054-21kswapd022:40:301
10050560,0irq/346-484840054-21kswapd021:39:021
81550,0rcu_preempt3-21ksoftirqd/019:56:310
81550,0rcu_preempt3-21ksoftirqd/019:56:310
2511399552,0cyclictest2572-21awk19:39:200
25113995514,0cyclictest19182-21munin-node0
2511399551,0cyclictest28406-21ping19:29:300
81540,0rcu_preempt8805-21ping20:09:570
81540,0rcu_preempt8805-21ping20:03:491
81540,0rcu_preempt32227-21ssh22:14:201
81540,0rcu_preempt3-21ksoftirqd/019:09:340
81540,0rcu_preempt19-21ksoftirqd/119:29:391
2511399542,0cyclictest0-21swapper/020:59:360
10050540,0irq/346-484840054-21kswapd023:55:171
10050540,0irq/346-484840054-21kswapd000:37:471
10050540,0irq/346-484840054-21kswapd000:15:091
81530,0rcu_preempt19-21ksoftirqd/100:20:081
2511399532,0cyclictest0-21swapper/020:04:300
25113995313,0cyclictest22486-21runrttasks20:39:310
10050530,0irq/346-484840054-21kswapd023:27:011
10050530,0irq/346-484840054-21kswapd021:44:251
10050530,0irq/346-484840011565-21ssh23:30:381
81520,0rcu_preempt3-21ksoftirqd/020:34:390
81520,0rcu_preempt19-21ksoftirqd/122:45:241
81520,0rcu_preempt19-21ksoftirqd/119:24:561
25113995211,0cyclictest0-21swapper/019:19:300
10050520,0irq/346-48484009934-1kworker/1:0H22:56:401
10050520,0irq/346-484840054-21kswapd021:59:511
81510,0rcu_preempt9950irq/345-484840021:10:551
81510,0rcu_preempt3-21ksoftirqd/020:53:060
10050510,0irq/346-484840054-21kswapd023:21:571
10050510,0irq/346-484840054-21kswapd023:13:581
10050510,0irq/346-484840027196-21munin-run22:09:191
10050510,0irq/346-484840021941-21ssh21:30:361
81500,0rcu_preempt19-21ksoftirqd/120:14:201
10050500,0irq/346-48484009701-21ssh00:01:441
10050500,0irq/346-48484009194-21ssh21:18:311
10050500,0irq/346-484840021536-21ssh23:08:401
10050500,0irq/346-48484001901-21ssh00:26:371
10050500,0irq/346-484840016498-21ssh22:30:121
10050500,0irq/346-484840011567-21ssh22:25:161
9950490,0irq/345-484840024891-1kworker/1:3H23:14:371
81490,0rcu_preempt21372-21kworker/u4:019:44:431
81490,0rcu_preempt19-21ksoftirqd/120:24:371
10050490,0irq/346-484840023794-21munin-node0
10050490,0irq/346-484840013364-21ssh00:05:041
81480,0rcu_preempt19-21ksoftirqd/119:34:391
10050480,0irq/346-484840054-21kswapd000:29:371
10050480,0irq/346-484840015708-21ssh21:57:211
81470,0rcu_preempt32218-21diskmemload23:40:351
10050460,0irq/346-484840027163-1kworker/1:2H23:48:211
81450,0rcu_preempt8805-21ping19:59:201
81450,0rcu_preempt8805-21ping19:59:201
81450,0rcu_preempt19-21ksoftirqd/120:04:441
10050440,0irq/346-48484003742-21ssh22:49:541
81430,0rcu_preempt19-21ksoftirqd/120:19:381
81430,0rcu_preempt19-21ksoftirqd/119:39:461
81430,0rcu_preempt19-21ksoftirqd/119:24:191
81420,0rcu_preempt19-21ksoftirqd/123:03:351
81410,0rcu_preempt19-21ksoftirqd/120:29:211
10050410,0irq/346-48484000-21swapper/119:49:361
81400,0rcu_preempt19-21ksoftirqd/120:09:491
81390,0rcu_preempt19-21ksoftirqd/121:04:461
81390,0rcu_preempt19-21ksoftirqd/120:54:321
81390,0rcu_preempt19-21ksoftirqd/120:44:311
81390,0rcu_preempt19-21ksoftirqd/120:34:321
81390,0rcu_preempt19-21ksoftirqd/119:09:401
81380,0rcu_preempt19-21ksoftirqd/119:14:431
81370,0rcu_preempt19-21ksoftirqd/120:39:431
9950360,0irq/345-48484000-21swapper/119:04:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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