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2024-02-25 - 12:52

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 Sun Feb 25, 2024 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16862912220166,18sleep10-21swapper/119:09:591
16860222215185,19sleep60-21swapper/619:06:106
16860002215159,17sleep40-21swapper/419:05:524
16862022207177,19sleep00-21swapper/019:08:460
16860412206171,22sleep70-21swapper/719:06:287
16859922206173,21sleep50-21swapper/519:05:455
16859982205171,21sleep20-21swapper/219:05:502
16859902203176,17sleep30-21swapper/319:05:433
1686525992624,1cyclictest1802722-21idleruntime-cro22:30:007
168650399251,3cyclictest1753397-21systemd-journal00:00:000
168651499240,23cyclictest1814428-21awk22:50:004
168651099240,23cyclictest1797411-21apt-get22:20:223
168651099240,22cyclictest1702130-21apt-get19:35:223
168650599241,22cyclictest0-21swapper/122:30:211
1686525992322,1cyclictest0-21swapper/720:00:017
168652599231,21cyclictest1699275-21http19:30:227
1686523992320,3cyclictest1843027-21cron23:40:006
1686523992320,2cyclictest1854823-21readlink00:00:006
168652399230,1cyclictest761rcuc/622:30:216
168651999230,22cyclictest1776680-21perf21:44:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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