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2025-05-02 - 12:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 50 highest latencies:
System rack8slot4s.osadl.org (updated Fri May 02, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23139692268189,27sleep30-21swapper/319:06:473
23141162214184,19sleep10-21swapper/119:08:541
23139252214159,18sleep60-21swapper/619:06:116
23117462213186,17sleep50-21swapper/519:05:045
23138872209178,20sleep40-21swapper/419:05:354
23141062208175,21sleep00-21swapper/019:08:460
23141582206178,18sleep70-21swapper/719:09:337
23140332206174,20sleep20-21swapper/219:07:422
2314417992820,2cyclictest2427479-21cron22:25:012
2314432992623,0cyclictest0-21swapper/723:20:137
231443299251,23cyclictest0-21swapper/700:30:127
2314427992420,3cyclictest2278910-21systemd-journal20:40:015
231442399240,23cyclictest2378631-21munin-run20:59:594
231442399240,23cyclictest0-21swapper/423:35:134
231441799240,23cyclictest2502439-21apt-get00:35:142
231441699244,20cyclictest0-21swapper/119:40:001
2314432992323,0cyclictest0-21swapper/723:45:157
2314432992321,1cyclictest2424642-21idleruntime-cro22:20:007
231443299230,22cyclictest2491016-21apt-get00:15:137
231443299230,22cyclictest2453612-21apt-get23:10:147
2314429992321,1cyclictest2496308-21sh00:25:016
231442999230,22cyclictest2358123-21apt-get20:25:006
231442999230,22cyclictest0-21swapper/621:45:156
231442999230,1cyclictest0-21swapper/600:35:136
231442999230,0cyclictest0-21swapper/623:05:136
2314423992323,0cyclictest0-21swapper/421:05:154
2314423992321,1cyclictest2439342-21apt-get22:45:124
231442399230,22cyclictest0-21swapper/419:35:004
231442199230,22cyclictest0-21swapper/323:45:163
2314417992321,1cyclictest2467469-21munin-run23:35:012
2314417992321,1cyclictest2467469-21munin-run23:35:002
231441799230,22cyclictest0-21swapper/222:30:132
231441799230,22cyclictest0-21swapper/222:00:132
231441799230,1cyclictest2326449-21apt-get19:30:012
2314416992323,0cyclictest0-21swapper/120:59:591
2314416992321,1cyclictest0-21swapper/120:55:001
231441699230,23cyclictest1-21systemd20:20:001
2314415992321,1cyclictest2324025-21apt-get19:25:130
231441599230,0cyclictest0-21swapper/022:40:120
2314432992220,1cyclictest2376200-21apt-get20:55:167
2314432992220,1cyclictest0-21swapper/723:35:017
2314432992220,1cyclictest0-21swapper/723:35:017
231443299220,21cyclictest0-21swapper/721:55:137
231443299220,21cyclictest0-21swapper/700:35:137
231443299220,1cyclictest0-21swapper/721:29:597
231443299220,0cyclictest0-21swapper/721:15:137
231443299220,0cyclictest0-21swapper/719:30:027
2314429992222,0cyclictest0-21swapper/620:55:176
231442999220,21cyclictest2487490-21perf00:10:006
231442999220,21cyclictest0-21swapper/622:45:136
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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