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2023-01-31 - 05:22

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 
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  TI

ARM TI AM5728 @1000 MHz, Linux 4.4.12-rt17-osadl-g86c9060003 (Profile)

Latency plot of shadow in rack #a, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 20 highest latencies:
System rackaslot5s.osadl.org (updated Tue Jan 31, 2023 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81960,0rcu_preempt3-21ksoftirqd/000:03:470
81740,0rcu_preempt4428-21kworker/1:021:32:461
81740,0rcu_preempt4428-21kworker/1:021:32:461
81720,0rcu_preempt19-21ksoftirqd/120:20:321
81670,0rcu_preempt3-21ksoftirqd/000:28:490
81670,0rcu_preempt19-21ksoftirqd/100:21:071
81660,0rcu_preempt54-21kswapd022:32:221
81650,0rcu_preempt19-21ksoftirqd/119:39:221
9950630,0irq/345-4848400181ktimersoftd/122:42:121
81630,0rcu_preempt54-21kswapd019:48:290
81630,0rcu_preempt3-21ksoftirqd/022:04:000
81630,0rcu_preempt3-21ksoftirqd/021:39:120
81630,0rcu_preempt19-21ksoftirqd/121:27:131
81620,0rcu_preempt19-21ksoftirqd/123:50:091
81620,0rcu_preempt19-21ksoftirqd/122:56:521
81600,0rcu_preempt8258-21cyclictest20:25:471
81600,0rcu_preempt3-21ksoftirqd/023:19:200
10050590,0irq/346-484840028708-21ssh21:24:310
9950580,0irq/345-484840015054-21diskmemload22:26:050
9950580,0irq/345-484840015054-21diskmemload22:26:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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