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2024-04-20 - 17:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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 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 rack9slot5s.osadl.org (updated Sat Apr 20, 2024 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2187199140,2rtkit-daemon21870-21rtkit-daemon10:20:200
2187199130,2rtkit-daemon21870-21rtkit-daemon07:16:560
11282991312,1cyclictest68350irq/133-lan11:15:521
11282991211,1cyclictest68350irq/133-lan11:27:081
11282991211,1cyclictest68350irq/133-lan10:36:031
11282991211,1cyclictest68350irq/133-lan10:00:201
11282991211,1cyclictest68350irq/133-lan09:46:221
11282991211,1cyclictest68350irq/133-lan08:50:001
11282991211,1cyclictest68350irq/133-lan08:28:291
11282991211,1cyclictest68350irq/133-lan07:17:381
2187199110,1rtkit-daemon21870-21rtkit-daemon09:07:141
2187199110,1rtkit-daemon21870-21rtkit-daemon08:09:360
2187199110,1rtkit-daemon21870-21rtkit-daemon08:01:100
11282991111,0cyclictest68350irq/133-lan12:34:121
11282991111,0cyclictest68350irq/133-lan12:11:181
11282991111,0cyclictest68350irq/133-lan11:05:161
11282991111,0cyclictest68350irq/133-lan10:50:161
11282991111,0cyclictest68350irq/133-lan10:26:191
11282991111,0cyclictest68350irq/133-lan10:17:011
11282991111,0cyclictest68350irq/133-lan08:07:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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