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2025-04-03 - 23:51

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 Thu Apr 03, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780,0rcu_preempt3-21ksoftirqd/008:08:280
10050750,0irq/346-484840054-21kswapd011:01:510
81720,0rcu_preempt3-21ksoftirqd/009:38:250
81710,0rcu_preempt3-21ksoftirqd/010:53:310
10050710,0irq/346-484840015879-1kworker/0:2H11:42:290
81680,0rcu_preempt3-21ksoftirqd/008:03:360
81660,0rcu_preempt3-21ksoftirqd/007:33:320
81650,0rcu_preempt3-21ksoftirqd/011:18:450
81600,0rcu_preempt19-21ksoftirqd/108:08:471
10050600,0irq/346-484840054-21kswapd009:42:561
81590,0rcu_preempt19-21ksoftirqd/108:21:351
10050590,0irq/346-484840054-21kswapd010:13:031
10050590,0irq/346-484840054-21kswapd010:13:031
10050590,0irq/346-484840054-21kswapd009:59:151
81580,0rcu_preempt19-21ksoftirqd/107:59:391
1352199581,0cyclictest16795-21ping07:38:270
10050580,0irq/346-484840054-21kswapd011:12:551
81570,0rcu_preempt3-21ksoftirqd/012:08:220
81570,0rcu_preempt3-21ksoftirqd/010:33:270
81570,0rcu_preempt3-21ksoftirqd/008:48:140
81570,0rcu_preempt3-21ksoftirqd/007:23:140
81570,0rcu_preempt19-21ksoftirqd/108:23:311
81570,0rcu_preempt19-21ksoftirqd/108:04:021
81570,0rcu_preempt19-21ksoftirqd/107:57:351
10050570,0irq/346-48484004009-1kworker/1:2H12:02:581
81560,0rcu_preempt3-21ksoftirqd/009:48:230
81560,0rcu_preempt19-21ksoftirqd/108:13:521
81550,0rcu_preempt3-21ksoftirqd/009:58:260
81550,0rcu_preempt19-21ksoftirqd/112:08:311
81550,0rcu_preempt19-21ksoftirqd/111:39:501
10050550,0irq/346-484840024323-1kworker/1:2H12:25:391
10050550,0irq/346-484840023275-1kworker/1:0H11:49:201
81540,0rcu_preempt19-21ksoftirqd/110:38:291
81540,0rcu_preempt19-21ksoftirqd/108:38:281
10050540,0irq/346-484840054-21kswapd011:31:181
10050540,0irq/346-484840054-21kswapd010:43:340
10050540,0irq/346-484840054-21kswapd010:25:091
10050540,0irq/346-484840054-21kswapd010:18:181
81530,0rcu_preempt19-21ksoftirqd/111:18:521
81530,0rcu_preempt19-21ksoftirqd/110:32:101
81530,0rcu_preempt18322-21diskmemload10:45:141
10050530,0irq/346-484840054-21kswapd012:31:141
10050530,0irq/346-484840054-21kswapd009:27:251
10050530,0irq/346-484840027768-1kworker/0:1H11:48:060
10050530,0irq/346-48484002596-1kworker/1:0H10:34:241
81520,0rcu_preempt19-21ksoftirqd/109:52:061
81520,0rcu_preempt19-21ksoftirqd/108:48:241
10050520,0irq/346-484840054-21kswapd012:04:581
10050520,0irq/346-484840054-21kswapd010:52:541
10050520,0irq/346-484840015879-1kworker/0:2H12:08:030
81510,0rcu_preempt3-21ksoftirqd/011:13:260
81510,0rcu_preempt19-21ksoftirqd/111:33:341
10050510,0irq/346-484840031472-21ssh11:02:171
10050510,0irq/346-484840024323-1kworker/1:2H12:35:251
10050510,0irq/346-484840020119-1kworker/0:2H12:21:200
10050510,0irq/346-484840016627-1kworker/0:3H10:51:080
81500,0rcu_preempt3-21ksoftirqd/008:18:140
81500,0rcu_preempt19-21ksoftirqd/110:05:591
81500,0rcu_preempt19-21ksoftirqd/108:53:411
81500,0rcu_preempt16250-21users08:58:461
10050500,0irq/346-484840054-21kswapd011:47:151
10050500,0irq/346-484840054-21kswapd011:31:460
10050500,0irq/346-484840032140-21ssh10:17:001
10050500,0irq/346-484840020871-1kworker/1:1H12:20:181
81490,0rcu_preempt19-21ksoftirqd/109:18:361
81490,0rcu_preempt19-21ksoftirqd/109:12:451
81490,0rcu_preempt19-21ksoftirqd/107:43:331
81490,0rcu_preempt19-21ksoftirqd/107:18:521
81490,0rcu_preempt18322-21diskmemload09:13:300
10050490,0irq/346-4848400753-21rngd11:34:400
10050490,0irq/346-484840054-21kswapd012:34:470
10050490,0irq/346-484840054-21kswapd012:15:100
10050490,0irq/346-484840054-21kswapd011:12:250
10050490,0irq/346-484840054-21kswapd009:47:341
10050490,0irq/346-484840026108-21ssh10:08:280
10050490,0irq/346-484840026108-21ssh10:08:280
10050490,0irq/346-484840016794-21munin-run07:18:140
10050490,0irq/346-48484000-21swapper/012:23:400
10050490,0irq/346-48484000-21swapper/011:27:410
10050490,0irq/346-48484000-21swapper/010:43:120
10050490,0irq/346-48484000-21swapper/010:32:530
10050490,0irq/346-48484000-21swapper/009:54:010
10050490,0irq/346-48484000-21swapper/009:11:240
81480,0rcu_preempt54-21kswapd007:13:441
81480,0rcu_preempt3-21ksoftirqd/007:03:570
81480,0rcu_preempt29708-21kworker/0:208:01:040
81480,0rcu_preempt19-21ksoftirqd/109:33:391
10050480,0irq/346-484840054-21kswapd012:13:141
10050480,0irq/346-484840054-21kswapd010:16:080
10050480,0irq/346-484840054-21kswapd009:33:360
10050480,0irq/346-484840054-21kswapd009:19:230
10050480,0irq/346-484840017358-21ssh09:54:341
10050480,0irq/346-48484000-21swapper/009:30:550
10050480,0irq/346-48484000-21swapper/008:48:420
81470,0rcu_preempt19-21ksoftirqd/111:23:521
10050470,0irq/346-484840054-21kswapd011:48:160
10050470,0irq/346-484840054-21kswapd009:47:240
10050470,0irq/346-48484000-21swapper/012:03:140
81460,0rcu_preempt19-21ksoftirqd/111:06:211
10050460,0irq/346-484840054-21kswapd011:53:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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