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2024-10-03 - 22:50

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 20 highest latencies:
System rackaslot5s.osadl.org (updated Thu Oct 03, 2024 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811150,0rcu_preempt104662sleep010:31:420
81950,0rcu_preempt19-21ksoftirqd/110:24:401
5902850,0sleep010050irq/346-484840008:20:100
81770,0rcu_preempt19-21ksoftirqd/111:26:341
81760,0rcu_preempt19-21ksoftirqd/111:19:091
81750,0rcu_preempt19-21ksoftirqd/111:41:381
81750,0rcu_preempt19-21ksoftirqd/111:19:571
81740,0rcu_preempt19-21ksoftirqd/112:22:281
81740,0rcu_preempt19-21ksoftirqd/111:31:281
81740,0rcu_preempt19-21ksoftirqd/110:56:261
81740,0rcu_preempt19-21ksoftirqd/110:30:451
81740,0rcu_preempt19-21ksoftirqd/110:02:341
81740,0rcu_preempt19-21ksoftirqd/109:40:591
81740,0rcu_preempt19-21ksoftirqd/109:40:591
81740,0rcu_preempt19-21ksoftirqd/109:30:421
81740,0rcu_preempt19-21ksoftirqd/109:26:401
81730,0rcu_preempt9961-1kworker/0:0H11:35:130
81730,0rcu_preempt19-21ksoftirqd/112:17:261
81730,0rcu_preempt19-21ksoftirqd/112:01:071
81730,0rcu_preempt19-21ksoftirqd/111:57:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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