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2025-04-02 - 04:02

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 Wed Apr 02, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811110,0rcu_preempt54-21kswapd021:40:141
811060,0rcu_preempt19-21ksoftirqd/122:30:551
811030,0rcu_preempt19-21ksoftirqd/119:18:151
811010,0rcu_preempt19-21ksoftirqd/123:53:431
10050830,0irq/346-4848400111rcuc/000:05:240
10050780,0irq/346-4848400111rcuc/022:40:170
10050760,0irq/346-4848400111rcuc/023:10:100
10050740,0irq/346-484840041ktimersoftd/000:25:200
10050740,0irq/346-48484000-21swapper/022:07:370
81730,0rcu_preempt3-21ksoftirqd/021:47:230
10050730,0irq/346-484840054-21kswapd000:11:500
81700,0rcu_preempt3-21ksoftirqd/023:59:220
81700,0rcu_preempt3-21ksoftirqd/022:25:290
81700,0rcu_preempt3-21ksoftirqd/000:21:390
10050700,0irq/346-484840054-21kswapd022:12:310
81680,0rcu_preempt19-21ksoftirqd/122:19:261
81680,0rcu_preempt19-21ksoftirqd/122:17:461
81680,0rcu_preempt19-21ksoftirqd/100:31:591
81660,0rcu_preempt3-21ksoftirqd/023:24:220
81660,0rcu_preempt3-21ksoftirqd/023:24:220
81660,0rcu_preempt20146-21kworker/1:121:08:371
81660,0rcu_preempt19-21ksoftirqd/122:55:501
81660,0rcu_preempt19-21ksoftirqd/121:14:341
81650,0rcu_preempt19-21ksoftirqd/122:52:261
81650,0rcu_preempt19-21ksoftirqd/122:41:341
81650,0rcu_preempt19-21ksoftirqd/121:37:291
81650,0rcu_preempt1361-21runrttasks23:52:350
81640,0rcu_preempt19-21ksoftirqd/123:52:121
81640,0rcu_preempt19-21ksoftirqd/123:18:341
10050640,0irq/346-484840054-21kswapd022:37:100
81630,0rcu_preempt19-21ksoftirqd/123:16:081
81630,0rcu_preempt19-21ksoftirqd/122:35:241
81630,0rcu_preempt19-21ksoftirqd/121:22:171
81630,0rcu_preempt19-21ksoftirqd/121:22:171
10050630,0irq/346-484840023401-1kworker/1:0H23:03:481
10050620,0irq/346-4848400753-21rngd23:29:150
10050620,0irq/346-484840054-21kswapd023:00:100
10050620,0irq/346-484840054-21kswapd023:00:100
81610,0rcu_preempt19-21ksoftirqd/122:44:221
81610,0rcu_preempt19-21ksoftirqd/121:49:391
81610,0rcu_preempt19-21ksoftirqd/119:58:451
81610,0rcu_preempt0-21swapper/100:11:121
10050610,0irq/346-48484000-21swapper/023:42:330
81600,0rcu_preempt19-21ksoftirqd/122:11:531
81600,0rcu_preempt19-21ksoftirqd/121:59:131
81600,0rcu_preempt19-21ksoftirqd/121:59:131
81600,0rcu_preempt19-21ksoftirqd/119:18:471
81600,0rcu_preempt19-21ksoftirqd/100:23:591
81600,0rcu_preempt19-21ksoftirqd/100:07:221
10050600,0irq/346-484840012382-1kworker/1:1H21:23:401
81590,0rcu_preempt19-21ksoftirqd/121:46:331
81590,0rcu_preempt19-21ksoftirqd/119:48:381
81590,0rcu_preempt18548-21kworker/0:122:13:260
10050590,0irq/346-484840054-21kswapd020:08:441
81580,0rcu_preempt19-21ksoftirqd/123:00:311
81580,0rcu_preempt19-21ksoftirqd/123:00:311
10050580,0irq/346-484840030552-1kworker/1:2H23:46:431
10050580,0irq/346-484840020730-1kworker/1:1H23:37:071
81570,0rcu_preempt3-21ksoftirqd/023:15:350
81570,0rcu_preempt19-21ksoftirqd/121:56:491
81560,0rcu_preempt19-21ksoftirqd/123:38:201
10050560,0irq/346-484840018452-1kworker/1:3H23:23:561
10050560,0irq/346-484840018452-1kworker/1:3H23:23:561
81550,0rcu_preempt19-21ksoftirqd/123:31:011
81540,0rcu_preempt3-21ksoftirqd/023:43:390
81540,0rcu_preempt3-21ksoftirqd/023:33:460
81540,0rcu_preempt19-21ksoftirqd/123:59:281
10050540,0irq/346-484840054-21kswapd021:49:300
10050540,0irq/346-484840054-21kswapd021:14:540
10050540,0irq/346-484840014106-1kworker/0:2H00:30:470
81530,0rcu_preempt3-21ksoftirqd/019:48:390
81530,0rcu_preempt3-21ksoftirqd/000:33:380
10050530,0irq/346-484840054-21kswapd000:17:050
10050530,0irq/346-48484003847-1kworker/1:3H00:36:451
81520,0rcu_preempt3-21ksoftirqd/021:38:430
81520,0rcu_preempt0-21swapper/120:15:581
10050520,0irq/346-48484005744-21ntp_kernel_pll_23:53:440
10050520,0irq/346-484840054-21kswapd022:32:290
10050520,0irq/346-484840031989-21apt-get21:08:290
10050520,0irq/346-484840020227-1kworker/1:0H00:13:471
81510,0rcu_preempt3-21ksoftirqd/020:48:320
81510,0rcu_preempt10489-21ping20:18:470
81510,0rcu_preempt10489-21ping20:18:470
10050510,0irq/346-484840030283-1kworker/1:1H23:10:111
10050510,0irq/346-484840011224-1kworker/1:2H22:06:031
81500,0rcu_preempt3-21ksoftirqd/021:55:340
81500,0rcu_preempt22031-21apt-get20:38:270
81500,0rcu_preempt20969-21apt-get22:53:260
81500,0rcu_preempt19-21ksoftirqd/120:18:271
81500,0rcu_preempt19-21ksoftirqd/120:18:271
81500,0rcu_preempt10528-21kworker/0:219:57:530
10050500,0irq/346-4848400122102sleep021:23:000
10050500,0irq/346-4848400122102sleep021:23:000
81490,0rcu_preempt3-21ksoftirqd/022:18:440
81490,0rcu_preempt3-21ksoftirqd/020:07:160
81490,0rcu_preempt3-21ksoftirqd/020:07:160
81490,0rcu_preempt19-21ksoftirqd/120:03:301
81490,0rcu_preempt19-21ksoftirqd/120:03:301
10050490,0irq/346-484840054-21kswapd023:20:340
10050490,0irq/346-484840016039-1kworker/1:2H21:31:121
81480,0rcu_preempt3-21ksoftirqd/019:13:410
81480,0rcu_preempt30163-21ping19:43:481
81480,0rcu_preempt20146-21kworker/1:119:53:361
10050480,0irq/346-484840054-21kswapd021:31:490
10050480,0irq/346-484840031890-21ssh23:07:160
10050480,0irq/346-484840027087-21ssh00:22:021
10050480,0irq/346-484840020081-21ssh22:52:150
10050480,0irq/346-4848400144402sleep022:45:090
81470,0rcu_preempt753-21rngd19:03:340
81470,0rcu_preempt3-21ksoftirqd/021:58:260
81470,0rcu_preempt3-21ksoftirqd/021:58:260
81470,0rcu_preempt3-21ksoftirqd/021:03:350
81470,0rcu_preempt3-21ksoftirqd/020:53:350
81470,0rcu_preempt3-21ksoftirqd/020:10:190
81470,0rcu_preempt3-21ksoftirqd/019:08:380
81470,0rcu_preempt30163-21ping19:38:281
81470,0rcu_preempt30163-21ping19:34:570
81470,0rcu_preempt26481-21kworker/0:219:18:450
10050470,0irq/346-484840030062-21awk21:03:151
81460,0rcu_preempt9933-21kworker/0:221:35:150
81460,0rcu_preempt3-21ksoftirqd/020:28:330
81460,0rcu_preempt3-21ksoftirqd/020:13:460
81460,0rcu_preempt28583-21apt-get20:58:260
81460,0rcu_preempt19-21ksoftirqd/120:33:351
10050460,0irq/346-484840054-21kswapd021:27:110
10050460,0irq/346-484840030163-21ping19:27:591
10050460,0irq/346-484840030163-21ping19:27:591
81450,0rcu_preempt3-21ksoftirqd/020:00:470
81450,0rcu_preempt19-21ksoftirqd/120:43:341
81450,0rcu_preempt19-21ksoftirqd/119:28:361
81440,0rcu_preempt19-21ksoftirqd/122:27:441
81440,0rcu_preempt19-21ksoftirqd/120:24:381
10050440,0irq/346-484840020224-21basename20:33:151
81430,0rcu_preempt19-21ksoftirqd/119:33:261
81430,0rcu_preempt19-21ksoftirqd/119:08:371
1599430,0migration/021545-21runrttasks20:34:580
81420,0rcu_preempt3-21ksoftirqd/020:47:590
81410,0rcu_preempt3-21ksoftirqd/020:24:290
81410,0rcu_preempt19-21ksoftirqd/120:38:371
81410,0rcu_preempt0-21swapper/121:03:331
9950400,0irq/345-48484000-21swapper/019:28:150
9950400,0irq/345-48484000-21swapper/019:28:150
81400,0rcu_preempt6266-21dropbear19:43:310
81400,0rcu_preempt3-21ksoftirqd/019:38:450
81400,0rcu_preempt3-21ksoftirqd/019:30:470
81390,0rcu_preempt19-21ksoftirqd/120:48:381
81390,0rcu_preempt19-21ksoftirqd/119:03:401
81380,0rcu_preempt19-21ksoftirqd/120:53:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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