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2024-04-25 - 09:35

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 Thu Apr 25, 2024 00:46:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32643732419399,13sleep130-21swapper/1319:07:345
32644582359340,12sleep140-21swapper/1419:08:396
32644182357337,13sleep110-21swapper/1119:08:043
32645292356337,12sleep80-21swapper/819:09:3714
32640542356348,5sleep50-21swapper/519:05:3311
32645362355335,13sleep150-21swapper/1519:09:467
32643492355335,13sleep60-21swapper/619:07:2712
32610442353333,13sleep120-21swapper/1219:05:084
32644372352336,9sleep100-21swapper/1019:08:202
32645412351330,14sleep30-21swapper/319:09:499
32642702349329,13sleep90-21swapper/919:06:4115
32642022347326,14sleep20-21swapper/219:05:468
32643212346326,13sleep70-21swapper/719:07:1213
32643402345325,13sleep10-21swapper/119:07:221
32644282344325,12sleep40-21swapper/419:08:1310
32642002343322,14sleep00-21swapper/019:05:440
3264967991329,90cyclictest0-21swapper/719:41:1413
326498399968,74cyclictest0-21swapper/1219:41:134
3264964999334,30cyclictest0-21swapper/619:41:1212
3264960998629,28cyclictest0-21swapper/519:41:1211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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