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2025-04-02 - 05:17

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 Wed Apr 02, 2025 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
824043991209,45cyclictest0-21swapper/900:29:5519
82404399688,38cyclictest0-21swapper/921:14:5619
82344826540,23sleep60-21swapper/619:09:4116
824016995425,28cyclictest0-21swapper/120:36:321
82403099530,51cyclictest2432981-21Isolated13:43:5515
824076995026,23cyclictest0-21swapper/1900:29:5411
82403099490,48cyclictest0-21swapper/519:20:3015
82345424835,8sleep110-21swapper/1119:09:473
82406999470,1cyclictest950579-40tracker-miner-f21:42:319
824043994615,0cyclictest0-21swapper/919:10:1819
82401699463,13cyclictest0-21swapper/121:27:161
824016994616,29cyclictest0-21swapper/120:56:461
824076994525,0cyclictest0-21swapper/1900:24:4811
824076994520,24cyclictest863256-21StreamT~s11
824019994544,1cyclictest2432755-21Socket13:43:5512
824016994544,0cyclictest0-21swapper/121:06:531
58366220450,42data-loop.00-21swapper/119:05:471
82406199440,43cyclictest981277-40tracker-miner-f22:28:106
82403099440,43cyclictest0-21swapper/522:58:3815
82403099440,43cyclictest0-21swapper/522:58:3715
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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