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2024-04-16 - 13:09

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 Tue Apr 16, 2024 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811030,0rcu_preempt3-21ksoftirqd/023:20:050
811020,0rcu_preempt3-21ksoftirqd/021:30:350
81900,0rcu_preempt20059-21kworker/0:020:36:160
81890,0rcu_preempt19-21ksoftirqd/120:20:021
81880,0rcu_preempt3-21ksoftirqd/000:05:500
81860,0rcu_preempt3-21ksoftirqd/023:40:060
81850,0rcu_preempt11922-21kworker/0:020:04:350
81840,0rcu_preempt3-21ksoftirqd/022:45:290
81830,0rcu_preempt3-21ksoftirqd/023:55:140
81830,0rcu_preempt3-21ksoftirqd/022:53:530
81830,0rcu_preempt3-21ksoftirqd/021:24:430
81820,0rcu_preempt3-21ksoftirqd/023:29:520
81820,0rcu_preempt3-21ksoftirqd/000:37:450
81820,0rcu_preempt10238-21ping20:20:020
81810,0rcu_preempt9957-21kworker/0:123:00:090
81810,0rcu_preempt3-21ksoftirqd/022:35:030
81810,0rcu_preempt3-21ksoftirqd/021:50:410
81810,0rcu_preempt3-21ksoftirqd/021:19:390
81810,0rcu_preempt3-21ksoftirqd/021:16:160
81810,0rcu_preempt3-21ksoftirqd/020:54:530
81810,0rcu_preempt3-21ksoftirqd/019:59:420
81810,0rcu_preempt3-21ksoftirqd/000:19:590
81810,0rcu_preempt3-21ksoftirqd/000:15:040
81810,0rcu_preempt25937-21kworker/0:119:14:360
81800,0rcu_preempt3-21ksoftirqd/023:37:070
81800,0rcu_preempt3-21ksoftirqd/023:25:420
81800,0rcu_preempt3-21ksoftirqd/022:21:550
81800,0rcu_preempt3-21ksoftirqd/019:56:570
81790,0rcu_preempt3-21ksoftirqd/022:15:430
81790,0rcu_preempt3-21ksoftirqd/022:03:190
81790,0rcu_preempt3-21ksoftirqd/021:08:470
81790,0rcu_preempt3-21ksoftirqd/020:52:530
81790,0rcu_preempt3-21ksoftirqd/020:48:010
81790,0rcu_preempt3-21ksoftirqd/000:29:370
81790,0rcu_preempt3-21ksoftirqd/000:04:270
81780,0rcu_preempt979-21diskmemload23:12:320
81780,0rcu_preempt3-21ksoftirqd/023:51:430
81780,0rcu_preempt3-21ksoftirqd/022:56:230
81780,0rcu_preempt3-21ksoftirqd/022:26:280
81780,0rcu_preempt3-21ksoftirqd/019:48:400
81770,0rcu_preempt3-21ksoftirqd/022:42:040
81770,0rcu_preempt3-21ksoftirqd/022:42:040
81770,0rcu_preempt3-21ksoftirqd/022:08:480
81770,0rcu_preempt3-21ksoftirqd/021:58:080
81770,0rcu_preempt3-21ksoftirqd/021:12:420
81770,0rcu_preempt3-21ksoftirqd/020:43:050
81770,0rcu_preempt3-21ksoftirqd/020:31:420
81770,0rcu_preempt3-21ksoftirqd/000:11:470
81760,0rcu_preempt3-21ksoftirqd/023:05:020
81760,0rcu_preempt3-21ksoftirqd/021:39:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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