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2024-07-16 - 09:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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 10 highest latencies:
System rackeslot3s.osadl.org (updated Mon Jul 15, 2024 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194444991273,3cyclictest131rcu_preempt10:10:020
2194444991064,91cyclictest0-21swapper/011:55:020
21944449910197,2cyclictest0-21swapper/012:35:020
2194444999995,2cyclictest0-21swapper/007:40:020
2194444999086,2cyclictest0-21swapper/008:35:020
2194452998867,13cyclictest23-21ksoftirqd/111:55:011
219446199822,53cyclictest2209108-21sshd11:26:133
2194444997975,2cyclictest0-21swapper/010:45:010
219444499771,3cyclictest0-21swapper/008:50:020
2194444997349,21cyclictest12-21ksoftirqd/008:23:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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