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2024-09-19 - 23:30

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 Sep 19, 2024 00:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2809272414393,12sleep120-21swapper/1219:07:294
2808152404380,14sleep40-21swapper/419:06:1610
2807272387363,14sleep130-21swapper/1319:05:065
2809822363318,14sleep140-21swapper/1419:08:206
2808582357312,15sleep60-21swapper/619:06:5212
2808722353328,15sleep20-21swapper/219:07:048
2807292348324,15sleep150-21swapper/1519:05:087
2810292347328,11sleep10-21swapper/119:08:551
2809322346322,14sleep00-21swapper/019:07:340
2808772346323,14sleep50-21swapper/519:07:0711
2807762346322,15sleep30-21swapper/319:05:449
2807652346323,14sleep110-21swapper/1119:05:363
2808022345322,14sleep80-21swapper/819:06:0514
2810882344321,14sleep90-21swapper/919:09:3515
2808182344320,15sleep70-21swapper/719:06:2013
2808622341319,13sleep100-21swapper/1019:06:562
41691121080,1sleep8951rcuc/821:15:2214
5748082630,0sleep80-21swapper/823:01:2414
28154299490,25cyclictest1323256-21IPDL22:56:1012
281542994812,11cyclictest0-21swapper/622:39:2612
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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