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2024-12-09 - 21:10

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 50 highest latencies:
System rackaslot5s.osadl.org (updated Mon Dec 09, 2024 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811000,0rcu_preempt19-21ksoftirqd/109:16:101
81990,0rcu_preempt3-21ksoftirqd/011:45:470
81940,0rcu_preempt753-21rngd09:39:081
10050740,0irq/346-48484000-21swapper/010:19:310
81670,0rcu_preempt3-21ksoftirqd/011:15:320
81670,0rcu_preempt19-21ksoftirqd/111:41:501
81650,0rcu_preempt19-21ksoftirqd/107:55:181
81650,0rcu_preempt19-21ksoftirqd/107:55:181
81560,0rcu_preempt3-21ksoftirqd/009:18:400
81560,0rcu_preempt3-21ksoftirqd/009:00:070
10050560,0irq/346-484840019465-1kworker/1:2H12:18:141
10050560,0irq/346-484840010418-1kworker/0:1H11:52:210
10050560,0irq/346-48484000-21swapper/011:59:110
81550,0rcu_preempt3-21ksoftirqd/008:30:170
2764599551,0cyclictest30924-21ping07:20:070
10050550,0irq/346-484840026382-1kworker/1:3H12:21:411
10050550,0irq/346-484840025538-1kworker/0:0H11:30:180
10050550,0irq/346-48484000-21swapper/012:32:020
81540,0rcu_preempt19-21ksoftirqd/110:45:091
81540,0rcu_preempt19-21ksoftirqd/109:47:001
81540,0rcu_preempt19-21ksoftirqd/109:41:441
10050540,0irq/346-484840054-21kswapd012:27:591
10050540,0irq/346-484840010417-1kworker/1:2H11:28:201
10050540,0irq/346-48484000-21swapper/010:24:170
10050540,0irq/346-48484000-21swapper/010:24:170
81530,0rcu_preempt3-21ksoftirqd/010:07:030
81530,0rcu_preempt26685-21kworker/0:010:02:540
81530,0rcu_preempt19-21ksoftirqd/108:19:561
2764599538,0cyclictest30913-1kworker/0:0H07:31:530
10050530,0irq/346-484840054-21kswapd012:22:040
10050530,0irq/346-48484004563-1kworker/1:2H12:33:061
10050530,0irq/346-484840025419-1kworker/0:0H12:19:440
10050530,0irq/346-484840019596-1kworker/1:3H11:52:131
10050530,0irq/346-48484000-21swapper/010:39:380
9950520,0irq/345-4848400181ktimersoftd/110:25:211
81520,0rcu_preempt3-21ksoftirqd/012:36:150
81520,0rcu_preempt3-21ksoftirqd/011:40:080
81520,0rcu_preempt3-21ksoftirqd/011:09:140
81520,0rcu_preempt3-21ksoftirqd/011:00:150
81520,0rcu_preempt3-21ksoftirqd/010:31:270
81520,0rcu_preempt3-21ksoftirqd/010:31:270
81520,0rcu_preempt3-21ksoftirqd/009:55:140
81520,0rcu_preempt3-21ksoftirqd/009:44:220
81520,0rcu_preempt3-21ksoftirqd/008:10:110
81520,0rcu_preempt16456-21kworker/0:209:25:190
81520,0rcu_preempt13637-21kworker/0:210:55:150
10050520,0irq/346-48484009163-21ssh11:24:541
10050520,0irq/346-48484005454-1kworker/1:1H10:43:101
10050520,0irq/346-48484004412-1kworker/1:0H09:24:011
10050520,0irq/346-484840024243-1kworker/1:1H11:47:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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