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2024-09-14 - 15:14

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 100 highest latencies:
System rackaslot5s.osadl.org (updated Sat Sep 14, 2024 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811090,0rcu_preempt3-21ksoftirqd/011:03:570
811050,0rcu_preempt3-21ksoftirqd/011:40:190
811040,0rcu_preempt3-21ksoftirqd/012:03:230
811030,0rcu_preempt3-21ksoftirqd/012:34:460
811030,0rcu_preempt3-21ksoftirqd/011:31:450
811020,0rcu_preempt3-21ksoftirqd/012:30:400
811020,0rcu_preempt3-21ksoftirqd/011:52:390
811020,0rcu_preempt3-21ksoftirqd/010:17:010
811010,0rcu_preempt3-21ksoftirqd/012:28:080
81990,0rcu_preempt3-21ksoftirqd/010:04:390
81990,0rcu_preempt3-21ksoftirqd/010:04:390
81970,0rcu_preempt3-21ksoftirqd/010:45:060
81960,0rcu_preempt3-21ksoftirqd/012:07:390
52812940,0sleep19950irq/345-484840011:22:081
81910,0rcu_preempt3-21ksoftirqd/009:19:340
81830,0rcu_preempt3-21ksoftirqd/009:44:380
81830,0rcu_preempt3-21ksoftirqd/008:07:250
81820,0rcu_preempt3-21ksoftirqd/012:16:380
81820,0rcu_preempt3-21ksoftirqd/008:21:030
81820,0rcu_preempt2414-21kworker/0:011:46:060
81820,0rcu_preempt18169-21kworker/0:111:56:090
81810,0rcu_preempt10768-21kworker/0:112:13:580
81800,0rcu_preempt3-21ksoftirqd/008:18:460
81790,0rcu_preempt3445-21diskmemload09:35:010
81790,0rcu_preempt3445-21diskmemload09:35:010
81790,0rcu_preempt3-21ksoftirqd/010:41:460
81790,0rcu_preempt3-21ksoftirqd/009:12:410
81790,0rcu_preempt3-21ksoftirqd/008:11:440
81790,0rcu_preempt27731-21kworker/0:009:04:420
81790,0rcu_preempt27731-21kworker/0:009:04:420
81790,0rcu_preempt2414-21kworker/0:011:21:410
81780,0rcu_preempt3-21ksoftirqd/011:06:270
81780,0rcu_preempt3-21ksoftirqd/010:28:320
81780,0rcu_preempt3-21ksoftirqd/009:57:240
81780,0rcu_preempt3-21ksoftirqd/009:52:140
81780,0rcu_preempt3-21ksoftirqd/009:33:420
81780,0rcu_preempt3-21ksoftirqd/007:24:530
81780,0rcu_preempt19-21ksoftirqd/110:30:001
81770,0rcu_preempt3-21ksoftirqd/011:28:200
81770,0rcu_preempt3-21ksoftirqd/010:03:010
81770,0rcu_preempt3-21ksoftirqd/009:44:050
81770,0rcu_preempt3-21ksoftirqd/009:15:530
81770,0rcu_preempt15563-21munin-node0
81760,0rcu_preempt3-21ksoftirqd/011:35:090
81760,0rcu_preempt3-21ksoftirqd/010:58:130
81760,0rcu_preempt3-21ksoftirqd/010:51:200
81760,0rcu_preempt3-21ksoftirqd/010:30:410
81760,0rcu_preempt3-21ksoftirqd/008:49:430
81760,0rcu_preempt3-21ksoftirqd/008:03:110
81760,0rcu_preempt19-21ksoftirqd/109:55:431
81760,0rcu_preempt17353-21kworker/0:107:39:570
81760,0rcu_preempt10168-21kworker/0:209:24:580
81750,0rcu_preempt3-21ksoftirqd/010:38:220
81750,0rcu_preempt3-21ksoftirqd/010:24:150
81750,0rcu_preempt3-21ksoftirqd/008:41:460
81750,0rcu_preempt3-21ksoftirqd/008:41:460
81750,0rcu_preempt3-21ksoftirqd/008:38:550
81750,0rcu_preempt3-21ksoftirqd/008:25:010
81750,0rcu_preempt3-21ksoftirqd/007:59:010
81750,0rcu_preempt3-21ksoftirqd/007:13:340
81750,0rcu_preempt32074-21kworker/0:007:46:050
81750,0rcu_preempt0-21swapper/011:12:250
81740,0rcu_preempt3-21ksoftirqd/012:19:570
81740,0rcu_preempt32074-21kworker/0:007:49:570
81740,0rcu_preempt1732-21ssh11:17:520
81730,0rcu_preempt32074-21kworker/0:007:33:550
81720,0rcu_preempt30644-1kworker/0:1H08:54:550
81700,0rcu_preempt3-21ksoftirqd/009:00:120
81700,0rcu_preempt3-21ksoftirqd/007:34:580
81700,0rcu_preempt3-21ksoftirqd/007:19:590
81690,0rcu_preempt3-21ksoftirqd/008:48:460
81690,0rcu_preempt3-21ksoftirqd/008:34:140
81660,0rcu_preempt26795-1kworker/0:1H07:14:410
10050630,0irq/346-484840054-21kswapd011:32:471
81600,0rcu_preempt3-21ksoftirqd/007:09:310
81600,0rcu_preempt3-21ksoftirqd/007:09:310
10050590,0irq/346-484840054-21kswapd011:54:541
10050570,0irq/346-484840054-21kswapd010:51:381
9950550,0irq/345-484840024158-1kworker/1:3H09:44:521
9950550,0irq/345-4848400171rcuc/109:34:541
9950550,0irq/345-4848400171rcuc/109:34:541
10050530,0irq/346-484840024287-1kworker/1:2H10:24:491
10050520,0irq/346-484840023382-21rm11:04:431
10050520,0irq/346-484840022849-21ssh10:19:451
10050510,0irq/346-484840054-21kswapd011:04:021
10050510,0irq/346-484840029407-1kworker/1:3H12:29:531
10050490,0irq/346-484840010465-1kworker/1:1H10:03:391
81480,0rcu_preempt19-21ksoftirqd/108:04:511
10050480,0irq/346-484840020808-1kworker/1:3H08:25:011
10050470,0irq/346-484840054-21kswapd010:09:341
10050470,0irq/346-484840025109-1kworker/1:0H11:15:051
10050470,0irq/346-48484001438-1kworker/1:2H12:34:591
10050450,0irq/346-484840032203-21ping07:43:371
10050450,0irq/346-484840028982-21apt-get11:49:411
10050440,0irq/346-48484008470-21munin-node1
10050440,0irq/346-484840054-21kswapd011:44:471
10050440,0irq/346-484840011865-1kworker/1:1H12:13:451
10050440,0irq/346-48484000-21swapper/112:02:091
10050440,0irq/346-48484000-21swapper/110:54:481
4350430,0irq/32-433000000-21swapper/108:19:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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