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2024-12-05 - 15:15

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #3

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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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackfslot3s.osadl.org (updated Wed Oct 23, 2024 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
537838993825,10cyclictest0-21swapper/021:10:000
537841993617,6cyclictest765-21Xorg19:23:581
537838993629,4cyclictest0-21swapper/023:25:110
537838993610,9cyclictest607080-21ssh22:30:020
537843993527,5cyclictest0-21swapper/200:00:012
53783899359,11cyclictest654121-21ssh00:07:340
53783899359,11cyclictest651410-21ssh00:00:570
53783899359,11cyclictest625020-21ssh23:05:340
53783899359,11cyclictest625020-21ssh23:05:340
53783899356,15cyclictest597107-21sh22:08:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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