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2024-06-20 - 08:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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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 rack0slot5s.osadl.org (updated Wed Jun 19, 2024 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20551252409403,4sleep140-21swapper/1419:09:556
20550072409402,5sleep60-21swapper/619:08:1012
20523712409403,4sleep150-21swapper/1519:05:077
20550152406399,4sleep130-21swapper/1319:08:185
20549672406400,4sleep20-21swapper/219:07:358
20551232405399,4sleep120-21swapper/1219:09:534
20548922405399,4sleep30-21swapper/319:06:329
20549922403396,4sleep80-21swapper/819:07:5714
20550772402389,5sleep40-21swapper/419:09:1310
20548632402396,4sleep90-21swapper/919:06:0515
20549842398392,4sleep00-21swapper/019:07:490
20549142398391,4sleep50-21swapper/519:06:5011
20549382397391,4sleep110-21swapper/1119:07:113
20548232397390,5sleep70-21swapper/719:05:3113
20549102394387,5sleep10-21swapper/119:06:461
20548642392386,4sleep100-21swapper/1019:06:062
2055430994140,1cyclictest1803-21snmpd19:11:0111
2055465993636,0cyclictest0-21swapper/1419:11:016
205543699360,11cyclictest0-21swapper/700:15:5813
205543699316,0cyclictest0-21swapper/700:04:5913
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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