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2024-07-16 - 15:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 rack0slot4s.osadl.org (updated Tue Jul 16, 2024 00:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33856912371327,36sleep80-21swapper/819:07:5314
33856162367346,14sleep30-21swapper/319:06:599
33857612364322,14sleep50-21swapper/519:08:3811
33857602362321,15sleep40-21swapper/419:08:3710
33858612361354,5sleep130-21swapper/1319:09:505
33857442350328,15sleep100-21swapper/1019:08:282
33856702348327,14sleep150-21swapper/1519:07:457
33821482348327,14sleep140-21swapper/1419:05:036
33857852347324,14sleep60-21swapper/619:08:5612
33856952347325,15sleep110-21swapper/1119:07:563
33856622347324,15sleep90-21swapper/919:07:3815
33855542346323,14sleep20-21swapper/219:06:108
33823612345324,14sleep70-21swapper/719:05:1213
33857542344322,15sleep00-21swapper/019:08:330
33857472344321,15sleep120-21swapper/1219:08:294
33857552343322,14sleep10-21swapper/119:08:351
3386254994945,4cyclictest2683341-21chrome19:20:261
3386297994036,2cyclictest3743501-21kworker/u32:5+flush-259:023:10:337
3386297993834,2cyclictest3483689-21kworker/u32:1+flush-259:020:20:157
3386261993737,0cyclictest2782231-1kworker/u33:4+i915_flip20:00:039
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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