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2024-02-25 - 09:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 10 highest latencies:
System rack0slot6s.osadl.org (updated Sun Feb 25, 2024 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
903112992510,250cyclictest1099810-21kworker/u40:0+efi_rts_wq23:55:224
903107992250,224cyclictest1078855-21kworker/u40:3+efi_rts_wq22:55:222
903112992230,221cyclictest963458-21kworker/u40:4+efi_rts_wq20:30:204
903075992140,213cyclictest876746-21kworker/u40:0+efi_rts_wq20:05:211
903107992020,201cyclictest1027319-21kworker/u40:2+efi_rts_wq21:40:242
903107992020,201cyclictest1027319-21kworker/u40:2+efi_rts_wq21:40:242
903072992020,201cyclictest1112931-21kworker/u40:6+efi_rts_wq00:05:210
903099992010,200cyclictest1112931-21kworker/u40:6+efi_rts_wq00:10:2718
903097992010,200cyclictest990927-21kworker/u40:1+efi_rts_wq21:10:2117
903080992010,200cyclictest1142535-21kworker/u40:4+efi_rts_wq00:35:2213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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