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2024-11-23 - 16:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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 rackeslot6s.osadl.org (updated Sat Nov 23, 2024 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1868047997873,3cyclictest14-21rcu_preempt12:10:000
186805299681,13cyclictest0-21swapper/212:35:022
1868052996561,2cyclictest0-21swapper/212:10:002
186804799648,20cyclictest0-21swapper/008:05:020
186804799648,20cyclictest0-21swapper/008:05:020
1868049995944,10cyclictest231ktimers/112:25:151
1868049995944,10cyclictest231ktimers/112:25:151
1868052995446,5cyclictest1912722-21munin-plugin-st11:35:002
186805299541,31cyclictest0-21swapper/208:00:012
186804799531,39cyclictest0-21swapper/011:00:120
1868047995220,27cyclictest0-21swapper/011:10:310
1868052995134,11cyclictest0-21swapper/210:40:282
1868052995134,11cyclictest0-21swapper/210:40:282
1868049995141,6cyclictest1877101-21sh08:00:211
1868049995141,6cyclictest1877101-21sh08:00:201
186804799511,7cyclictest0-21swapper/010:35:020
1868049995041,4cyclictest1892461-21sh09:30:271
1868049995013,10cyclictest1868042-21cyclictest09:00:021
186805299491,26cyclictest0-21swapper/208:30:002
1868047994941,4cyclictest0-21swapper/007:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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