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2024-04-20 - 14:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack7slot4s.osadl.org (updated Sat Apr 20, 2024 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
257499692,46cyclictest30910-21ssh23:15:182
257499669,18cyclictest131rcu_preempt21:40:142
257499532,34cyclictest22613-21ssh00:30:132
257499532,34cyclictest22613-21ssh00:30:132
256099492,3cyclictest12978-21apt-get21:25:141
2586994732,8cyclictest26866irq/58-eth023:35:153
257499461,36cyclictest0-21swapper/200:05:142
256099462,3cyclictest0-21swapper/120:35:141
256099451,2cyclictest0-21swapper/123:30:151
256099451,2cyclictest0-21swapper/123:15:181
255199453,29cyclictest12985-21ssh21:25:130
256099442,3cyclictest0-21swapper/123:55:131
256099441,12cyclictest5554-21apt-get22:20:121
2574994318,20cyclictest630-21Async19:56:242
2551994315,21cyclictest12-21ksoftirqd/022:35:140
256099422,4cyclictest0-21swapper/119:15:151
256099421,3cyclictest22418-21ssh23:10:111
256099411,4cyclictest22112-21ssh21:50:131
256099411,4cyclictest22112-21ssh21:50:131
256099411,3cyclictest14031-21apt-get21:45:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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