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2025-07-01 - 08:00

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 20 highest latencies:
System rack8slot4s.osadl.org (updated Tue Jul 01, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6799732228164,21sleep00-21swapper/019:09:190
6799352213179,22sleep70-21swapper/719:08:467
6799102212179,21sleep20-21swapper/219:08:242
6798952211159,17sleep50-21swapper/519:08:125
6797542211178,21sleep60-21swapper/619:06:126
6799272208176,20sleep10-21swapper/119:08:401
6798842206178,18sleep30-21swapper/319:08:023
6797052203176,17sleep40-21swapper/419:05:294
68027899298,4cyclictest0-21swapper/719:44:557
68027899268,0cyclictest0-21swapper/722:51:387
68027899258,0cyclictest0-21swapper/722:29:407
68027899258,0cyclictest0-21swapper/721:23:467
68027899258,0cyclictest0-21swapper/720:50:497
68027899250,24cyclictest693240-21apt-get19:30:157
68027299250,1cyclictest770662-21apt-get21:45:185
680270992524,1cyclictest819167-21fwupd23:08:004
68026199250,23cyclictest0-21swapper/120:00:111
68027899247,0cyclictest0-21swapper/723:13:367
68027899247,0cyclictest0-21swapper/722:07:427
68027899247,0cyclictest0-21swapper/722:07:417
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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