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2025-07-12 - 11:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Sat Jul 12, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3260899250,2cyclictest21456-21sendmail-msp21:00:003
3260299250,24cyclictest0-21swapper/121:55:421
32595992523,1cyclictest10135-21perf19:30:000
32604992422,1cyclictest17509-21turbostat.cron23:05:002
32608992323,0cyclictest0-21swapper/300:15:413
32608992320,2cyclictest313-21systemd-journal20:10:013
3260899230,1cyclictest16163-21apt-get21:55:413
3260899230,1cyclictest0-21swapper/323:20:003
32604992320,2cyclictest22381-21basename23:15:002
3260499230,1cyclictest17337-21latency_hist19:45:002
32602992323,0cyclictest0-21swapper/121:45:411
32602992321,1cyclictest0-21swapper/119:33:171
3260299230,2cyclictest22050-21awk00:20:001
32595992322,0cyclictest13020-21apt-get22:55:420
3259599230,2cyclictest29590-21idleruntime-cro23:30:000
3259599230,22cyclictest612-21gdbus20:55:000
3259599230,22cyclictest5118-21apt22:40:000
3260899220,21cyclictest16856-21cron00:10:003
3260899220,21cyclictest0-21swapper/300:35:003
32604992220,1cyclictest0-21swapper/221:25:002
3260499220,21cyclictest4957-21idleruntime-cro19:20:002
3260499220,21cyclictest388-21apt-get19:10:402
3260499220,21cyclictest0-21swapper/223:50:392
3260499220,1cyclictest609-21polkitd19:40:002
3260499220,1cyclictest3463-21idleruntime-cro21:30:002
3260499220,1cyclictest25815-21apt-get22:15:432
32602992222,0cyclictest0-21swapper/119:15:401
3260299220,21cyclictest29700-21apt-get20:10:401
3260299220,21cyclictest12063-21awk00:00:001
3260299220,21cyclictest0-21swapper/122:40:401
3260299220,21cyclictest0-21swapper/122:20:421
3260299220,21cyclictest0-21swapper/121:40:441
3260299220,21cyclictest0-21swapper/120:40:411
3260299220,21cyclictest0-21swapper/120:30:391
3260299220,21cyclictest0-21swapper/120:05:421
3260299220,21cyclictest0-21swapper/119:50:391
32595992222,0cyclictest0-21swapper/020:15:420
32595992220,1cyclictest15477-21perf21:55:000
3259599220,21cyclictest31067-21perf21:20:010
3259599220,21cyclictest22376-21apt-get00:20:410
3259599220,21cyclictest14220-21munin-run20:45:000
3259599220,21cyclictest0-21swapper/022:40:400
3259599220,21cyclictest0-21swapper/000:25:390
3259599220,21cyclictest0-21swapper/000:05:390
3259599220,1cyclictest28655-21perf21:14:590
3259599220,1cyclictest24792-21munin-run23:20:000
3259599220,1cyclictest14483-21munin-run00:05:010
3259599220,1cyclictest0-21swapper/000:19:590
32608992120,1cyclictest30194-21apt-get23:30:033
32608992119,1cyclictest593-21dbus-daemon21:45:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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