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2024-12-12 - 04:52

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 20 highest latencies:
System rackeslot5s.osadl.org (updated Thu Dec 12, 2024 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
831199252,22cyclictest15891-21dump-pmu-power19:25:001
8310992523,1cyclictest0-21swapper/020:57:220
8313992422,1cyclictest0-21swapper/223:50:002
831799230,2cyclictest8993-21apt00:40:003
831799230,22cyclictest8034-21apt21:22:213
8313992323,0cyclictest0-21swapper/200:32:192
8313992321,1cyclictest30387-21perf21:00:002
8313992320,2cyclictest593-21dbus-daemon00:40:002
831399230,23cyclictest0-21swapper/222:52:202
831199230,22cyclictest4611-21apt-get00:32:201
831199230,22cyclictest1764-21perf00:25:001
831199230,0cyclictest10797-21apt-get20:22:251
8310992323,0cyclictest0-21swapper/000:22:250
8310992321,1cyclictest26779-21turbostat.cron22:00:000
831099230,22cyclictest14780-21sh21:35:000
8317992222,0cyclictest0-21swapper/300:22:263
8317992220,1cyclictest5621-21apt-get21:17:233
831799220,21cyclictest9290-21apt-get22:32:223
831799220,21cyclictest26826-21awk22:00:003
831799220,21cyclictest0-21swapper/323:52:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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