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2025-07-01 - 05:25

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 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
68027899247,0cyclictest0-21swapper/719:11:577
68026799240,24cyclictest1896684-21systemd-journal23:35:013
680261992422,1cyclictest0-21swapper/122:40:011
68027899231,4cyclictest0-21swapper/720:39:507
680276992321,1cyclictest0-21swapper/621:34:596
68027699230,22cyclictest0-21swapper/623:20:016
68027699230,22cyclictest0-21swapper/621:55:006
68027699230,22cyclictest0-21swapper/621:15:136
68027699230,21cyclictest802618-21apt-get22:40:146
680272992321,1cyclictest816897-21apt-get23:05:165
680272992321,1cyclictest773508-21apt-get21:50:145
68027299230,23cyclictest747392-21awk21:05:005
68027099230,22cyclictest851966-21apt-get00:10:094
68027099230,22cyclictest0-21swapper/419:45:124
68027099230,22cyclictest0-21swapper/400:05:004
68026799230,22cyclictest0-21swapper/322:25:153
68026799230,0cyclictest0-21swapper/320:05:123
680265992322,1cyclictest0-21swapper/223:50:012
68026599230,22cyclictest842621-21apt-get23:50:142
68026599230,22cyclictest0-21swapper/219:55:132
68026199230,22cyclictest836917-21apt-get23:40:131
68026199230,22cyclictest0-21swapper/121:50:141
68026199230,22cyclictest0-21swapper/121:20:001
68025999230,22cyclictest868958-21perf00:40:000
68025999230,22cyclictest816476-21munin-run23:05:000
68025999230,22cyclictest0-21swapper/020:50:120
680278992221,1cyclictest0-21swapper/700:10:007
680278992220,1cyclictest805471-21apt-get22:45:157
68027899221,4cyclictest0-21swapper/723:24:357
68027899220,21cyclictest0-21swapper/721:45:187
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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