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2023-01-31 - 01:41

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 10 highest latencies:
System rackaslot5s.osadl.org (updated Mon Jan 30, 2023 12:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811140,0rcu_preempt19-21ksoftirqd/112:07:161
811090,0rcu_preempt0-21swapper/111:24:051
811050,0rcu_preempt19-21ksoftirqd/112:29:011
811040,0rcu_preempt19-21ksoftirqd/108:05:431
811030,0rcu_preempt19-21ksoftirqd/110:10:361
811020,0rcu_preempt54-21kswapd011:14:131
811010,0rcu_preempt19-21ksoftirqd/107:39:571
811000,0rcu_preempt19-21ksoftirqd/111:29:301
81960,0rcu_preempt0-21swapper/111:58:541
81950,0rcu_preempt3-21ksoftirqd/009:39:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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