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2025-05-05 - 00:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot6s.osadl.org (updated Sun May 04, 2025 00:46:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34229732209193,10sleep90-21swapper/919:09:4119
34226292205188,10sleep20-21swapper/219:05:5312
342265224943,3sleep180-21swapper/1819:06:1010
342338199487,37cyclictest0-21swapper/720:14:5717
342275624743,2sleep160-21swapper/1619:07:288
342271724539,3sleep70-21swapper/719:06:5917
195999430,31ntpd0-21swapper/1919:05:2211
342272824235,4sleep170-21swapper/1719:07:099
342260824136,3sleep50-21swapper/519:05:3715
342290524036,2sleep100-21swapper/1019:09:022
342281124035,3sleep130-21swapper/1319:08:055
3423374993932,6cyclictest0-21swapper/521:26:5815
3423363993938,1cyclictest3526084-40tracker-miner-f21:01:591
342291723934,3sleep10-21swapper/119:09:131
175598390,36rtkit-daemon0-21swapper/1119:05:333
3423363993837,1cyclictest3570386-40tracker-miner-f21:53:591
342291623833,3sleep00-21swapper/019:09:120
342261123833,3sleep80-21swapper/819:05:4018
342037123834,2sleep60-21swapper/619:05:1816
3423374993731,5cyclictest0-21swapper/500:11:5915
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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