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2025-04-02 - 05:12

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 Wed Apr 02, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
263962115104,6sleep20-21swapper/219:09:422
26105211595,14sleep10-21swapper/119:05:571
26319211493,15sleep30-21swapper/319:08:433
25668210895,6sleep00-21swapper/019:05:230
145762720,0sleep10-21swapper/100:14:341
242982310,0sleep20-21swapper/221:27:522
197922290,1sleep219793-21munin-run00:20:002
29422250,1sleep20-21swapper/221:39:472
63762210,0sleep20-21swapper/222:18:272
2644999210,18cyclictest0-21swapper/221:05:122
272162200,0sleep00-21swapper/022:05:580
2644999191,3cyclictest10979-21kworker/u8:023:35:132
271232180,0sleep10-21swapper/100:28:241
26447991815,2cyclictest757-21kworker/u8:122:49:050
26450991613,2cyclictest31372-21modprobe19:20:173
26450991612,2cyclictest227762sleep321:25:333
2644999160,13cyclictest0-21swapper/223:20:292
2644899161,3cyclictest27251-21users20:35:261
2644899161,13cyclictest21642-21perl22:35:141
26447991612,3cyclictest19083-21kworker/u8:123:45:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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