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2024-05-27 - 09:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6s.osadl.org (updated Mon May 27, 2024 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
979021470,0sleep20-21swapper/223:36:562
182192112101,6sleep30-21swapper/319:08:423
18007211287,19sleep10-21swapper/119:06:001
18289210884,19sleep00-21swapper/019:09:350
16542210679,6sleep20-21swapper/219:05:082
261192750,0sleep30-21swapper/322:10:183
251042690,0sleep10-21swapper/123:54:141
228892660,0sleep30-21swapper/323:15:473
305642490,1sleep030562-21ssh00:35:130
166622260,2sleep116657-21apt-get23:45:111
265672250,1sleep20-21swapper/220:50:122
18349992318,3cyclictest18294-21kworker/u8:022:41:042
76342210,0sleep10-21swapper/123:00:151
18348992117,2cyclictest0-21swapper/122:35:101
1834899210,19cyclictest0-21swapper/123:25:121
1834799210,17cyclictest0-21swapper/023:20:120
1834999200,3cyclictest0-21swapper/221:44:042
1834799200,2cyclictest0-21swapper/021:35:130
18349991916,2cyclictest9806-21kworker/u8:221:32:052
18349991916,2cyclictest23821-21kworker/u8:019:33:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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