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2026-09-01 - 09:58

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 highest latencies:
System rackaslot5s.osadl.org (updated Tue Sep 01, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811310,0rcu_preempt54-21kswapd022:59:411
811310,0rcu_preempt19-21ksoftirqd/100:29:441
811300,0rcu_preempt19-21ksoftirqd/123:19:281
811300,0rcu_preempt19-21ksoftirqd/121:33:351
811300,0rcu_preempt19-21ksoftirqd/100:24:501
811280,0rcu_preempt19-21ksoftirqd/121:37:181
811240,0rcu_preempt19-21ksoftirqd/121:24:461
811230,0rcu_preempt19-21ksoftirqd/123:34:321
811230,0rcu_preempt0-21swapper/122:21:131
811220,0rcu_preempt19-21ksoftirqd/121:55:401
811210,0rcu_preempt2207-21runrttasks00:37:061
811210,0rcu_preempt19-21ksoftirqd/121:53:441
811210,0rcu_preempt19-21ksoftirqd/100:21:441
811200,0rcu_preempt19-21ksoftirqd/121:20:301
811180,0rcu_preempt19-21ksoftirqd/121:47:591
811140,0rcu_preempt836-21rngd23:25:271
811130,0rcu_preempt19-21ksoftirqd/122:01:541
811100,0rcu_preempt19-21ksoftirqd/122:26:321
811090,0rcu_preempt54-21kswapd023:22:141
811090,0rcu_preempt19-21ksoftirqd/119:38:011
811080,0rcu_preempt1977-21sshd23:30:521
811080,0rcu_preempt19-21ksoftirqd/123:59:291
811080,0rcu_preempt19-21ksoftirqd/123:07:261
811050,0rcu_preempt19-21ksoftirqd/122:45:061
811040,0rcu_preempt19-21ksoftirqd/122:42:031
811020,0rcu_preempt19-21ksoftirqd/100:07:351
811010,0rcu_preempt19-21ksoftirqd/123:44:581
811010,0rcu_preempt19-21ksoftirqd/122:37:091
811010,0rcu_preempt19-21ksoftirqd/122:29:341
811010,0rcu_preempt19-21ksoftirqd/122:16:171
811010,0rcu_preempt19-21ksoftirqd/100:15:211
811000,0rcu_preempt19-21ksoftirqd/123:50:371
811000,0rcu_preempt19-21ksoftirqd/122:04:591
811000,0rcu_preempt19-21ksoftirqd/121:18:181
811000,0rcu_preempt19-21ksoftirqd/119:59:591
811000,0rcu_preempt19-21ksoftirqd/100:01:211
81990,0rcu_preempt19-21ksoftirqd/121:40:571
81980,0rcu_preempt19-21ksoftirqd/123:41:541
81980,0rcu_preempt19-21ksoftirqd/122:51:381
81980,0rcu_preempt19-21ksoftirqd/122:13:531
81970,0rcu_preempt19-21ksoftirqd/122:54:361
81970,0rcu_preempt19-21ksoftirqd/119:39:521
81970,0rcu_preempt19-21ksoftirqd/100:12:511
81940,0rcu_preempt19-21ksoftirqd/121:11:081
81930,0rcu_preempt19-21ksoftirqd/120:30:321
81910,0rcu_preempt19-21ksoftirqd/123:13:041
81870,0rcu_preempt19-21ksoftirqd/120:12:451
81860,0rcu_preempt19-21ksoftirqd/119:58:281
81860,0rcu_preempt19-21ksoftirqd/119:58:281
81840,0rcu_preempt19-21ksoftirqd/120:22:081
81840,0rcu_preempt19-21ksoftirqd/119:25:001
81840,0rcu_preempt19-21ksoftirqd/119:25:001
81830,0rcu_preempt27418-21munin-node1
81810,0rcu_preempt19-21ksoftirqd/119:19:481
81800,0rcu_preempt19-21ksoftirqd/120:54:441
81800,0rcu_preempt19-21ksoftirqd/120:17:491
81800,0rcu_preempt19-21ksoftirqd/119:49:561
81790,0rcu_preempt19-21ksoftirqd/120:26:361
81790,0rcu_preempt19-21ksoftirqd/119:33:581
81780,0rcu_preempt19-21ksoftirqd/120:08:181
81760,0rcu_preempt19-21ksoftirqd/120:49:431
81760,0rcu_preempt19-21ksoftirqd/120:47:151
9950750,0irq/345-484840041ktimersoftd/023:36:000
81750,0rcu_preempt19-21ksoftirqd/121:07:061
81740,0rcu_preempt19-21ksoftirqd/121:01:501
10050740,0irq/346-484840018054-1kworker/0:1H21:40:210
81720,0rcu_preempt19-21ksoftirqd/120:39:571
81700,0rcu_preempt19-21ksoftirqd/120:39:291
81700,0rcu_preempt19-21ksoftirqd/119:14:301
10050700,0irq/346-48484002371-1kworker/0:1H23:06:470
81690,0rcu_preempt19-21ksoftirqd/119:19:301
10050680,0irq/346-484840054-21kswapd021:37:510
1579399651,0cyclictest22764-21diskmemload21:24:510
81640,0rcu_preempt3-21ksoftirqd/000:29:290
1579399622,0cyclictest6452-21ssh00:09:370
1579399612,0cyclictest0-21swapper/022:44:450
15793996116,0cyclictest0-21swapper/023:16:070
81590,0rcu_preempt3-21ksoftirqd/022:09:420
1579399599,0cyclictest26088-21ssh22:17:440
1579399594,0cyclictest6373-21sort20:19:290
1579399592,0cyclictest28720-21runrttasks19:47:350
1579399592,0cyclictest0-21swapper/022:26:210
15793995818,0cyclictest0-21swapper/022:07:050
81570,0rcu_preempt3-21ksoftirqd/022:39:100
1579399572,0cyclictest0-21swapper/023:43:060
1579399567,0cyclictest32202-21sendmail-msp19:59:310
1579399566,0cyclictest0-21swapper/023:54:170
1579399562,0cyclictest0-21swapper/021:53:330
1579399552,0cyclictest0-21swapper/022:59:140
1579399551,0cyclictest3-21ksoftirqd/019:40:020
1579399532,0cyclictest23854-21runrttasks19:33:090
1579399532,0cyclictest1335-21lldpd21:44:410
10050530,0irq/346-48484008633-1kworker/0:2H00:15:530
15793995220,0cyclictest0-21swapper/021:10:400
1579399517,0cyclictest0-21swapper/019:38:410
1579399513,0cyclictest0-21swapper/022:42:440
10050510,0irq/346-484840054-21kswapd023:13:340
10050500,0irq/346-484840054-21kswapd019:59:290
10050500,0irq/346-484840054-21kswapd019:59:290
81480,0rcu_preempt3-21ksoftirqd/019:07:330
10050480,0irq/346-484840027644-21runrttasks22:51:380
10050470,0irq/346-484840054-21kswapd021:19:390
10050470,0irq/346-484840022764-21diskmemload23:24:490
9950460,0irq/345-48484001445-21runrttasks22:34:200
1579399466,0cyclictest0-21swapper/020:24:280
1579399462,0cyclictest29855-21ssh23:59:390
10050460,0irq/346-484840054-21kswapd022:19:470
10050460,0irq/346-48484003-21ksoftirqd/019:19:310
10050460,0irq/346-48484000-21swapper/021:16:290
10050440,0irq/346-48484007580-21sendmail-msp21:59:310
10050440,0irq/346-484840054-21kswapd000:04:410
10050430,0irq/346-484840054-21kswapd021:33:320
10050430,0irq/346-48484000-21swapper/023:04:010
81420,0rcu_preempt54-21kswapd021:54:550
81420,0rcu_preempt25151-21ssh23:54:440
10050420,0irq/346-48484000-21swapper/023:45:060
10050410,0irq/346-48484000-21swapper/023:32:270
10050410,0irq/346-48484000-21swapper/000:31:120
10050410,0irq/346-48484000-21swapper/000:23:120
10050400,0irq/346-48484000-21swapper/023:21:430
81380,0rcu_preempt3-21ksoftirqd/000:34:590
1579399381,0cyclictest32069-21ping20:09:460
9950370,0irq/345-48484000-21swapper/020:44:300
81370,0rcu_preempt19-21ksoftirqd/119:05:071
1579399379,0cyclictest32069-21ping20:05:140
10050370,0irq/346-48484000-21swapper/021:00:380
1579399369,0cyclictest0-21swapper/020:31:040
81350,0rcu_preempt3-21ksoftirqd/019:53:520
1579399358,0cyclictest0-21swapper/020:24:380
1579399345,0cyclictest836-21rngd19:19:320
1579399335,0cyclictest21461-21meminfo19:24:580
1579399335,0cyclictest21461-21meminfo19:24:580
81320,0rcu_preempt3-21ksoftirqd/020:54:410
81320,0rcu_preempt3-21ksoftirqd/020:44:510
15793993011,0cyclictest21489-21diskstats21:04:450
10050300,0irq/346-484840011988-21sshd20:34:500
81290,0rcu_preempt3-21ksoftirqd/019:09:540
15793992810,0cyclictest17656-21seq20:52:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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