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2026-01-22 - 03:10
[ 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 Thu Jan 22, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811170,0rcu_preempt29324-1kworker/1:0H00:19:571
81990,0rcu_preempt0-21swapper/119:35:151
81960,0rcu_preempt19-21ksoftirqd/119:25:041
81870,0rcu_preempt19-21ksoftirqd/121:59:491
81870,0rcu_preempt19-21ksoftirqd/121:59:491
81800,0rcu_preempt1821-1kworker/1:1H00:05:181
81790,0rcu_preempt9950irq/345-484840019:40:021
81770,0rcu_preempt19-21ksoftirqd/120:10:001
81760,0rcu_preempt3-21ksoftirqd/023:50:110
81740,0rcu_preempt19-21ksoftirqd/120:15:151
81700,0rcu_preempt19-21ksoftirqd/121:38:411
81690,0rcu_preempt20493-21cyclictest21:20:531
81690,0rcu_preempt19-21ksoftirqd/122:20:001
81690,0rcu_preempt19-21ksoftirqd/100:25:081
81690,0rcu_preempt19-21ksoftirqd/100:18:551
10050680,0irq/346-484840054-21kswapd023:15:120
81650,0rcu_preempt3-21ksoftirqd/021:14:010
81640,0rcu_preempt19-21ksoftirqd/123:40:081
81640,0rcu_preempt19-21ksoftirqd/123:40:081
81640,0rcu_preempt19-21ksoftirqd/122:00:001
81640,0rcu_preempt19-21ksoftirqd/121:48:041
81630,0rcu_preempt19-21ksoftirqd/122:14:491
10050630,0irq/346-484840054-21kswapd000:04:491
81620,0rcu_preempt3-21ksoftirqd/021:49:420
81620,0rcu_preempt19-21ksoftirqd/120:05:091
20496996122,0cyclictest22732-21runrttasks22:44:200
81600,0rcu_preempt19-21ksoftirqd/123:30:181
81600,0rcu_preempt19-21ksoftirqd/123:30:181
81590,0rcu_preempt19-21ksoftirqd/100:35:141
81590,0rcu_preempt19-21ksoftirqd/100:31:221
20496995919,0cyclictest7109-1kworker/0:2H23:34:590
81580,0rcu_preempt19-21ksoftirqd/123:57:111
20496995823,0cyclictest19881-21ssh21:34:590
81570,0rcu_preempt27615-1kworker/1:4H23:25:011
20496995721,0cyclictest4419-21ssh00:05:020
81560,0rcu_preempt19-21ksoftirqd/122:05:141
81560,0rcu_preempt19-21ksoftirqd/100:10:541
81560,0rcu_preempt12466-21kworker/0:121:54:540
81560,0rcu_preempt12466-21kworker/0:121:54:540
20496995611,0cyclictest31172-21sendmail-msp22:19:550
10050560,0irq/346-48484000-21swapper/000:30:110
81550,0rcu_preempt914-21df22:55:030
81550,0rcu_preempt3-21ksoftirqd/020:54:560
81550,0rcu_preempt19-21ksoftirqd/121:00:141
81550,0rcu_preempt19-21ksoftirqd/119:10:061
20496995520,0cyclictest17568-21ssh22:05:120
20496995516,0cyclictest290602sleep023:56:360
10050550,0irq/346-484840025712-1kworker/1:3H22:47:251
81540,0rcu_preempt19-21ksoftirqd/123:37:091
81540,0rcu_preempt19-21ksoftirqd/121:29:591
81540,0rcu_preempt19-21ksoftirqd/121:29:591
20496995421,0cyclictest31736-21ssh23:59:590
20496995419,0cyclictest4351-21ping20:00:000
20496995419,0cyclictest15076-21ssh23:09:450
20496995419,0cyclictest15076-21ssh23:09:450
81530,0rcu_preempt4351-21ping20:05:140
81530,0rcu_preempt3-21ksoftirqd/023:25:490
81530,0rcu_preempt3-21ksoftirqd/022:31:250
81530,0rcu_preempt3-21ksoftirqd/021:53:230
81530,0rcu_preempt19-21ksoftirqd/123:45:131
81530,0rcu_preempt19-21ksoftirqd/122:54:491
20496995320,0cyclictest13834-21ssh21:28:360
20496995319,0cyclictest27727-21ssh00:28:530
10050530,0irq/346-48484001242-21ntpd21:29:411
81520,0rcu_preempt3-21ksoftirqd/021:15:130
20496995234,0cyclictest2539-21apt-get23:30:000
20496995234,0cyclictest2539-21apt-get23:30:000
20496995225,0cyclictest12210-21apt-get23:40:000
20496995225,0cyclictest12210-21apt-get23:40:000
20496995223,0cyclictest26815-21munin-node0
20496995220,0cyclictest29055-21ssh23:23:470
20496995220,0cyclictest26136-21ssh21:40:270
20496995218,0cyclictest1470-21runrttasks00:38:470
20496995217,0cyclictest23785-21ping19:42:170
10050520,0irq/346-484840054-21kswapd023:00:021
10050520,0irq/346-484840054-21kswapd021:16:211
81510,0rcu_preempt31874-1kworker/1:1H21:49:491
81510,0rcu_preempt11365-21kworker/0:122:48:570
20496995122,0cyclictest3084-1kworker/0:3H23:00:000
20496995120,0cyclictest9114-21apt-get00:10:000
20496995119,0cyclictest0-21swapper/023:10:070
10050510,0irq/346-484840025555-21ssh21:40:131
81500,0rcu_preempt22493-21diskstats19:15:040
81500,0rcu_preempt19-21ksoftirqd/120:00:081
20496995020,0cyclictest14987-21munin-node0
20496995020,0cyclictest14987-21munin-node0
20496995018,0cyclictest18832-1kworker/0:3H00:20:110
20496995017,0cyclictest0-21swapper/022:39:480
20496995017,0cyclictest0-21swapper/022:39:480
20496995015,0cyclictest54-21kswapd021:20:380
20496995015,0cyclictest23785-21ping19:30:100
20496995013,0cyclictest2880-21cron19:54:480
9950490,0irq/345-484840023785-21ping19:19:491
81490,0rcu_preempt3-21ksoftirqd/020:25:180
81490,0rcu_preempt3-21ksoftirqd/019:20:000
81490,0rcu_preempt19-21ksoftirqd/121:09:591
20496994919,0cyclictest20707-21ssh23:48:290
20496994918,0cyclictest14818-21munin-node0
20496994916,0cyclictest0-21swapper/022:10:080
20496994915,0cyclictest0-21swapper/020:30:090
10050490,0irq/346-484840054-21kswapd022:13:231
10050490,0irq/346-484840025711-1kworker/1:0H22:59:441
10050490,0irq/346-484840011780-21ssh21:59:500
81480,0rcu_preempt19-21ksoftirqd/122:40:051
10050480,0irq/346-484840054-21kswapd022:25:351
81470,0rcu_preempt19703-21ps19:05:130
81470,0rcu_preempt19-21ksoftirqd/123:50:111
20496994716,0cyclictest0-21swapper/022:25:030
20496994715,0cyclictest4351-21ping20:19:500
10050470,0irq/346-484840054-21kswapd022:51:540
10050470,0irq/346-484840054-21kswapd020:35:080
10050470,0irq/346-484840054-21kswapd020:19:550
81460,0rcu_preempt3615-21meminfo19:55:090
81460,0rcu_preempt3-21ksoftirqd/020:45:150
81460,0rcu_preempt19-21ksoftirqd/123:20:011
81460,0rcu_preempt19-21ksoftirqd/122:35:121
81460,0rcu_preempt19-21ksoftirqd/122:35:121
81460,0rcu_preempt19-21ksoftirqd/120:45:121
20496994621,0cyclictest21167-21munin-node0
20496994618,0cyclictest23785-21ping19:45:190
20496994616,0cyclictest0-21swapper/021:04:480
81450,0rcu_preempt19-21ksoftirqd/122:29:591
20496994519,0cyclictest23785-21ping19:35:000
20496994519,0cyclictest22136-21basename19:14:480
20496994516,0cyclictest17817-21latency_hist20:39:500
81440,0rcu_preempt3-21ksoftirqd/020:13:430
81440,0rcu_preempt0-21swapper/120:35:061
20496994324,0cyclictest26117-21apt-get21:04:590
10050430,0irq/346-484840016321-21rt-features23:10:141
81420,0rcu_preempt19-21ksoftirqd/123:18:561
81420,0rcu_preempt19-21ksoftirqd/123:05:161
81420,0rcu_preempt19-21ksoftirqd/123:05:161
81420,0rcu_preempt19-21ksoftirqd/120:50:111
81420,0rcu_preempt19-21ksoftirqd/119:50:001
81420,0rcu_preempt0-21swapper/121:05:161
10050420,0irq/346-484840017964-21aten_rapower_po20:40:021
81410,0rcu_preempt3383-21if_err_eth019:55:061
81410,0rcu_preempt19-21ksoftirqd/120:55:141
81410,0rcu_preempt19-21ksoftirqd/119:05:031
20496994118,0cyclictest23785-21ping19:25:060
81400,0rcu_preempt15152-21meminfo20:30:091
81390,0rcu_preempt19-21ksoftirqd/120:20:101
81390,0rcu_preempt19-21ksoftirqd/119:45:181
81390,0rcu_preempt19-21ksoftirqd/119:30:171
81390,0rcu_preempt0-21swapper/119:15:151
81380,0rcu_preempt19-21ksoftirqd/120:25:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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