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2025-05-12 - 08:34

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 all highest latencies:
System rackaslot5s.osadl.org (updated Mon May 12, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811090,0rcu_preempt19-21ksoftirqd/123:25:131
81990,0rcu_preempt19-21ksoftirqd/122:26:301
81950,0rcu_preempt19-21ksoftirqd/121:10:071
81840,0rcu_preempt19-21ksoftirqd/100:20:551
81820,0rcu_preempt19-21ksoftirqd/122:12:391
81800,0rcu_preempt3-21ksoftirqd/000:31:120
81790,0rcu_preempt3-21ksoftirqd/023:22:540
81780,0rcu_preempt3-21ksoftirqd/023:13:310
81780,0rcu_preempt3-21ksoftirqd/000:15:530
81770,0rcu_preempt19-21ksoftirqd/123:08:581
9950760,0irq/345-48484009459-21ssh23:28:050
81760,0rcu_preempt3-21ksoftirqd/022:12:410
81760,0rcu_preempt19-21ksoftirqd/119:32:391
81750,0rcu_preempt3-21ksoftirqd/021:43:290
81740,0rcu_preempt3-21ksoftirqd/023:57:320
81740,0rcu_preempt3-21ksoftirqd/022:24:540
81740,0rcu_preempt19-21ksoftirqd/100:28:101
81730,0rcu_preempt3-21ksoftirqd/022:40:020
81730,0rcu_preempt3-21ksoftirqd/000:22:190
81730,0rcu_preempt19-21ksoftirqd/121:47:551
81720,0rcu_preempt3-21ksoftirqd/022:12:230
81720,0rcu_preempt3-21ksoftirqd/021:57:490
81720,0rcu_preempt3-21ksoftirqd/021:29:180
81720,0rcu_preempt3-21ksoftirqd/021:29:180
81720,0rcu_preempt3-21ksoftirqd/000:12:200
81720,0rcu_preempt14203-21kworker/0:122:33:440
81710,0rcu_preempt3-21ksoftirqd/023:34:340
81710,0rcu_preempt3-21ksoftirqd/023:21:150
81710,0rcu_preempt3-21ksoftirqd/023:02:250
81710,0rcu_preempt3-21ksoftirqd/021:50:160
81710,0rcu_preempt3-21ksoftirqd/021:12:390
81700,0rcu_preempt3-21ksoftirqd/022:43:450
81700,0rcu_preempt3-21ksoftirqd/022:04:010
81690,0rcu_preempt3-21ksoftirqd/023:10:070
81690,0rcu_preempt3-21ksoftirqd/021:37:220
10050680,0irq/346-484840016759-1kworker/0:1H00:23:080
9950670,0irq/345-484840018862-21diskmemload23:44:480
81670,0rcu_preempt3-21ksoftirqd/023:52:170
81670,0rcu_preempt19-21ksoftirqd/123:33:041
9950660,0irq/345-48484005511-1kworker/0:3H22:48:030
81660,0rcu_preempt3-21ksoftirqd/022:32:280
81660,0rcu_preempt3-21ksoftirqd/021:37:520
81660,0rcu_preempt3-21ksoftirqd/000:35:510
9950650,0irq/345-48484000-21swapper/000:01:160
81650,0rcu_preempt3-21ksoftirqd/021:55:090
81650,0rcu_preempt25527-21sh21:52:581
81640,0rcu_preempt3-21ksoftirqd/020:37:590
81640,0rcu_preempt16248-21irqstats20:58:050
81630,0rcu_preempt19-21ksoftirqd/100:15:371
9950620,0irq/345-48484000-21swapper/023:42:320
81620,0rcu_preempt3-21ksoftirqd/022:57:270
81620,0rcu_preempt19-21ksoftirqd/121:34:371
9950610,0irq/345-48484000-21swapper/023:03:170
81610,0rcu_preempt3-21ksoftirqd/020:47:590
81610,0rcu_preempt28128-21ping20:13:050
81610,0rcu_preempt19-21ksoftirqd/122:29:061
81600,0rcu_preempt3-21ksoftirqd/022:22:300
81600,0rcu_preempt30542-21kworker/0:021:22:500
81600,0rcu_preempt19-21ksoftirqd/121:58:001
81600,0rcu_preempt19-21ksoftirqd/100:11:401
81590,0rcu_preempt19-21ksoftirqd/119:43:111
181992580,0chrt10050irq/346-484840019:24:000
81560,0rcu_preempt29831-21kworker/0:120:02:530
81540,0rcu_preempt3-21ksoftirqd/019:57:520
81540,0rcu_preempt31476-21apt-get22:37:511
81530,0rcu_preempt6114-21df_inode20:27:550
81530,0rcu_preempt3-21ksoftirqd/021:17:060
41222520,0chrt10050irq/346-484840020:22:390
41222520,0chrt10050irq/346-484840020:22:390
81500,0rcu_preempt3-21ksoftirqd/021:17:570
81500,0rcu_preempt3-21ksoftirqd/000:04:570
81500,0rcu_preempt19-21ksoftirqd/120:07:531
81490,0rcu_preempt3-21ksoftirqd/020:11:260
81490,0rcu_preempt19-21ksoftirqd/122:17:111
81490,0rcu_preempt19-21ksoftirqd/119:33:111
81490,0rcu_preempt19-21ksoftirqd/100:33:101
13250490,0irq/301-48020003-21ksoftirqd/019:32:590
9950480,0irq/345-484840015578-21idleruntime-cro20:57:400
9950480,0irq/345-484840015578-21idleruntime-cro20:57:400
81480,0rcu_preempt28128-21ping20:23:050
81480,0rcu_preempt19-21ksoftirqd/123:39:431
81480,0rcu_preempt19-21ksoftirqd/122:18:041
81480,0rcu_preempt19-21ksoftirqd/120:23:011
81480,0rcu_preempt19-21ksoftirqd/119:56:151
81470,0rcu_preempt5967-1kworker/1:3H21:38:531
81470,0rcu_preempt54-21kswapd019:13:051
81470,0rcu_preempt3-21ksoftirqd/019:53:000
81470,0rcu_preempt3-21ksoftirqd/019:12:580
81470,0rcu_preempt2199-21kworker/0:319:47:580
81470,0rcu_preempt19-21ksoftirqd/123:18:001
81470,0rcu_preempt19-21ksoftirqd/123:13:061
81470,0rcu_preempt19-21ksoftirqd/120:17:561
81470,0rcu_preempt19-21ksoftirqd/120:17:561
81470,0rcu_preempt19-21ksoftirqd/119:38:471
81470,0rcu_preempt19-21ksoftirqd/100:04:291
81460,0rcu_preempt54-21kswapd023:02:011
81460,0rcu_preempt16910-1kworker/1:2H19:23:071
10050460,0irq/346-48484003-21ksoftirqd/019:19:210
81450,0rcu_preempt19-21ksoftirqd/121:43:071
81450,0rcu_preempt19-21ksoftirqd/121:12:471
81450,0rcu_preempt15271-21ping19:27:500
1200199451,0cyclictest15271-21ping19:44:250
81440,0rcu_preempt3-21ksoftirqd/020:32:590
81440,0rcu_preempt19-21ksoftirqd/123:27:581
81440,0rcu_preempt19-21ksoftirqd/121:31:491
81440,0rcu_preempt19-21ksoftirqd/121:31:491
81440,0rcu_preempt19-21ksoftirqd/119:03:051
10050440,0irq/346-484840010862-21munin-node0
81430,0rcu_preempt19-21ksoftirqd/123:48:051
81430,0rcu_preempt19-21ksoftirqd/119:57:521
81420,0rcu_preempt19-21ksoftirqd/123:43:121
81420,0rcu_preempt19-21ksoftirqd/123:05:071
81420,0rcu_preempt19-21ksoftirqd/122:49:291
81420,0rcu_preempt19-21ksoftirqd/122:32:511
81420,0rcu_preempt19-21ksoftirqd/122:03:041
81420,0rcu_preempt19-21ksoftirqd/121:22:511
81420,0rcu_preempt19-21ksoftirqd/121:18:011
81420,0rcu_preempt19-21ksoftirqd/120:53:071
81420,0rcu_preempt19-21ksoftirqd/120:53:071
81420,0rcu_preempt19-21ksoftirqd/120:04:091
81420,0rcu_preempt19-21ksoftirqd/119:18:101
81420,0rcu_preempt19-21ksoftirqd/100:00:371
81420,0rcu_preempt0-21swapper/021:03:030
81410,0rcu_preempt3-21ksoftirqd/020:42:590
81410,0rcu_preempt19-21ksoftirqd/122:54:121
81410,0rcu_preempt19-21ksoftirqd/120:51:101
81410,0rcu_preempt19-21ksoftirqd/120:13:061
81400,0rcu_preempt3-21ksoftirqd/019:08:050
81400,0rcu_preempt19-21ksoftirqd/121:05:431
81400,0rcu_preempt19-21ksoftirqd/120:58:121
81400,0rcu_preempt19-21ksoftirqd/120:38:101
81400,0rcu_preempt19-21ksoftirqd/120:35:451
81400,0rcu_preempt19-21ksoftirqd/100:23:481
81390,0rcu_preempt19-21ksoftirqd/122:45:191
81390,0rcu_preempt19-21ksoftirqd/119:49:571
81380,0rcu_preempt19-21ksoftirqd/123:55:381
81380,0rcu_preempt19-21ksoftirqd/120:43:021
81380,0rcu_preempt19-21ksoftirqd/120:30:151
81370,0rcu_preempt19-21ksoftirqd/119:09:191
81370,0rcu_preempt15271-21ping19:37:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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