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2025-03-16 - 23:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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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 rack0slot3s.osadl.org (updated Tue Feb 25, 2025 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11226762246238,5sleep60-21swapper/619:05:096
11249932244210,27sleep20-21swapper/219:09:312
11247352242203,13sleep70-21swapper/719:06:237
11249762234215,12sleep00-21swapper/019:09:210
11225262234214,13sleep50-21swapper/519:05:005
11248912233213,13sleep30-21swapper/319:08:273
11247142233213,13sleep40-21swapper/419:06:034
11247472232212,13sleep10-21swapper/119:06:321
1125319993529,4cyclictest0-21swapper/323:50:103
112530899350,35cyclictest0-21swapper/019:55:360
112530899350,34cyclictest0-21swapper/023:44:380
112530899350,34cyclictest0-21swapper/022:12:200
112530899350,34cyclictest0-21swapper/020:36:560
112530899350,34cyclictest0-21swapper/019:48:060
112530899340,13cyclictest0-21swapper/022:52:220
112530899340,13cyclictest0-21swapper/021:31:060
112530899340,0cyclictest0-21swapper/019:27:040
112530899340,0cyclictest0-21swapper/000:23:290
112530899340,0cyclictest0-21swapper/000:23:280
1125319993311,22cyclictest0-21swapper/322:07:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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