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2026-07-04 - 09:12

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 Sat Jul 04, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811110,0rcu_preempt851-21rngd21:40:551
811110,0rcu_preempt851-21rngd21:40:551
811110,0rcu_preempt54-21kswapd023:55:061
811110,0rcu_preempt19-21ksoftirqd/123:11:001
811110,0rcu_preempt19-21ksoftirqd/122:42:481
811110,0rcu_preempt19-21ksoftirqd/121:51:191
811100,0rcu_preempt8981-21ssh23:27:111
811100,0rcu_preempt19-21ksoftirqd/122:12:231
811070,0rcu_preempt54-21kswapd000:02:231
811070,0rcu_preempt19-21ksoftirqd/122:30:091
811070,0rcu_preempt19-21ksoftirqd/122:00:231
811030,0rcu_preempt8196-21kworker/u4:222:07:491
811030,0rcu_preempt19-21ksoftirqd/123:42:401
811010,0rcu_preempt19-21ksoftirqd/123:39:441
811010,0rcu_preempt19-21ksoftirqd/123:28:351
811010,0rcu_preempt19-21ksoftirqd/121:36:151
811010,0rcu_preempt19-21ksoftirqd/100:18:531
811000,0rcu_preempt54-21kswapd000:24:371
811000,0rcu_preempt19-21ksoftirqd/121:07:371
811000,0rcu_preempt19-21ksoftirqd/100:13:431
811000,0rcu_preempt0-21swapper/122:17:141
81990,0rcu_preempt517-21kworker/1:222:52:541
81990,0rcu_preempt19-21ksoftirqd/120:52:281
81980,0rcu_preempt19-21ksoftirqd/121:19:371
81980,0rcu_preempt19-21ksoftirqd/120:12:361
81980,0rcu_preempt19-21ksoftirqd/120:12:361
81970,0rcu_preempt16986-21ssh23:34:531
81960,0rcu_preempt19-21ksoftirqd/119:22:401
81940,0rcu_preempt19-21ksoftirqd/121:53:521
81940,0rcu_preempt19-21ksoftirqd/121:46:071
81930,0rcu_preempt335-21kworker/1:200:33:111
81930,0rcu_preempt19-21ksoftirqd/122:23:241
81920,0rcu_preempt9950irq/345-484840022:07:300
81920,0rcu_preempt0-21swapper/121:28:061
81910,0rcu_preempt19-21ksoftirqd/100:11:381
81900,0rcu_preempt19-21ksoftirqd/122:05:091
81900,0rcu_preempt19-21ksoftirqd/121:13:281
81890,0rcu_preempt54-21kswapd019:43:341
81890,0rcu_preempt19-21ksoftirqd/122:49:081
81880,0rcu_preempt19-21ksoftirqd/121:23:361
81880,0rcu_preempt19-21ksoftirqd/120:30:541
81860,0rcu_preempt19-21ksoftirqd/100:28:101
81850,0rcu_preempt19-21ksoftirqd/119:57:251
81840,0rcu_preempt19-21ksoftirqd/122:38:251
81840,0rcu_preempt19-21ksoftirqd/120:12:111
81830,0rcu_preempt19-21ksoftirqd/119:27:341
81830,0rcu_preempt19-21ksoftirqd/119:17:381
81820,0rcu_preempt19-21ksoftirqd/123:20:521
81820,0rcu_preempt16689-21kworker/1:123:51:571
81810,0rcu_preempt19-21ksoftirqd/120:06:351
81810,0rcu_preempt19-21ksoftirqd/119:33:541
81800,0rcu_preempt851-21rngd23:12:171
81800,0rcu_preempt19-21ksoftirqd/123:58:351
81800,0rcu_preempt19-21ksoftirqd/119:37:491
81800,0rcu_preempt19-21ksoftirqd/119:37:491
81790,0rcu_preempt19-21ksoftirqd/123:01:121
81780,0rcu_preempt19-21ksoftirqd/120:24:161
81780,0rcu_preempt19-21ksoftirqd/120:17:421
81770,0rcu_preempt19-21ksoftirqd/123:06:081
81770,0rcu_preempt19-21ksoftirqd/123:06:081
81770,0rcu_preempt19-21ksoftirqd/121:02:401
81770,0rcu_preempt19-21ksoftirqd/121:02:401
81750,0rcu_preempt19-21ksoftirqd/122:32:351
81750,0rcu_preempt19-21ksoftirqd/120:57:281
81750,0rcu_preempt19-21ksoftirqd/120:36:531
81750,0rcu_preempt19-21ksoftirqd/119:57:131
81740,0rcu_preempt3-21ksoftirqd/000:03:590
81740,0rcu_preempt19-21ksoftirqd/120:42:311
81730,0rcu_preempt19-21ksoftirqd/119:12:341
81730,0rcu_preempt19-21ksoftirqd/119:12:341
81720,0rcu_preempt19-21ksoftirqd/120:37:431
10050710,0irq/346-48484003191-1kworker/0:0H00:31:430
81700,0rcu_preempt19-21ksoftirqd/120:52:131
10050700,0irq/346-48484003191-1kworker/0:0H00:32:420
10050700,0irq/346-484840025111-1kworker/0:1H21:32:320
81690,0rcu_preempt19-21ksoftirqd/119:50:391
81680,0rcu_preempt19-21ksoftirqd/119:07:341
81630,0rcu_preempt54-21kswapd021:58:530
81600,0rcu_preempt54-21kswapd021:55:150
81600,0rcu_preempt3-21ksoftirqd/023:08:470
10050600,0irq/346-48484002425-1kworker/0:0H21:40:540
10050600,0irq/346-48484002425-1kworker/0:0H21:40:540
10050590,0irq/346-484840012834-1kworker/0:3H22:32:370
81570,0rcu_preempt3-21ksoftirqd/021:25:420
10050560,0irq/346-48484002425-1kworker/0:0H21:43:030
10050540,0irq/346-484840054-21kswapd023:12:490
10050520,0irq/346-484840054-21kswapd023:27:460
10050520,0irq/346-484840054-21kswapd000:24:180
10050520,0irq/346-484840026989-21ssh21:31:420
10050510,0irq/346-484840054-21kswapd000:16:250
10050510,0irq/346-48484002976-1kworker/0:2H21:07:230
10050500,0irq/346-48484006704-21ls23:57:350
10050500,0irq/346-484840054-21kswapd023:45:540
10050500,0irq/346-484840054-21kswapd022:28:360
10050500,0irq/346-48484000-21swapper/023:04:130
10050500,0irq/346-48484000-21swapper/023:04:130
10050490,0irq/346-484840054-21kswapd023:39:290
10050490,0irq/346-484840054-21kswapd022:49:300
10050490,0irq/346-484840054-21kswapd022:44:150
10050490,0irq/346-484840054-21kswapd021:16:580
10050490,0irq/346-484840054-21kswapd000:17:220
10050480,0irq/346-484840054-21kswapd022:06:380
10050480,0irq/346-484840015437-21ssh21:19:070
10050480,0irq/346-48484000-21swapper/022:40:480
10050480,0irq/346-48484000-21swapper/000:10:510
10050470,0irq/346-484840018633-21ssh23:37:080
10050470,0irq/346-484840012348-1kworker/0:0H19:57:120
10050460,0irq/346-484840027171-21munin-node0
10050450,0irq/346-484840054-21kswapd022:14:220
10050450,0irq/346-484840031617-1kworker/0:0H19:17:330
10050450,0irq/346-484840028532-21ssh23:47:140
10050450,0irq/346-484840012011-21ssh21:49:070
9950440,0irq/345-48484000-21swapper/022:59:020
81430,0rcu_preempt11837-21meminfo22:22:340
10050430,0irq/346-48484006788-21rm23:24:120
10050430,0irq/346-48484000-21swapper/023:18:100
10050430,0irq/346-48484000-21swapper/019:47:370
28672994212,0cyclictest0-21swapper/020:08:420
10050420,0irq/346-48484003689-1kworker/0:1H23:54:370
10050420,0irq/346-484840032083-1kworker/0:3H20:57:350
81410,0rcu_preempt3-21ksoftirqd/022:52:310
81410,0rcu_preempt27880-21ps19:02:361
10050410,0irq/346-484840020586-1kworker/0:0H20:18:580
9950400,0irq/345-484840032314-21chrt20:56:330
9950400,0irq/345-48484000-21swapper/022:21:070
1599400,0migration/022853-21df20:27:260
1599400,0migration/013962-21taskset19:58:310
10050400,0irq/346-484840030304-21munin-run19:12:120
10050400,0irq/346-48484001470-21runrttasks20:25:490
10050400,0irq/346-48484000-21swapper/020:47:250
9950390,0irq/345-48484004458-21cron19:32:130
2867299392,0cyclictest0-21swapper/019:35:590
318752380,0chrt31617-1kworker/0:0H19:16:330
318752380,0chrt31617-1kworker/0:0H19:16:330
28672993813,0cyclictest12506-21ping20:02:270
9950370,0irq/345-48484000-21swapper/020:42:400
10050370,0irq/346-48484001339-21snmpd21:03:560
10050370,0irq/346-48484001339-21snmpd21:03:560
9950360,0irq/345-48484000-21swapper/020:32:230
2867299362,0cyclictest19241-21cat20:17:130
2867299362,0cyclictest19241-21cat20:17:130
2867299362,0cyclictest0-21swapper/019:44:110
2867299362,0cyclictest0-21swapper/019:41:590
2867299362,0cyclictest0-21swapper/019:41:590
2867299352,0cyclictest0-21swapper/019:22:270
10050330,0irq/346-48484000-21swapper/020:39:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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