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2024-07-16 - 15:42

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 Mon Jul 15, 2024 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18930993231,1cyclictest7386-21lspci10:05:551
18925992821,6cyclictest8669-21munin-plugin-st07:54:590
18925992621,4cyclictest0-21swapper/010:43:480
18938992523,1cyclictest12719-21diskmemload09:59:003
1893899250,24cyclictest12719-21diskmemload11:41:583
18930992524,1cyclictest21817-21ssh09:17:481
18925992523,2cyclictest0-21swapper/012:39:040
18925992523,2cyclictest0-21swapper/010:04:170
18925992523,1cyclictest28473-21sh11:32:110
1892599250,24cyclictest12719-21diskmemload12:13:200
1892599250,24cyclictest12719-21diskmemload11:28:010
18938992423,1cyclictest7207-21ssh09:35:353
18938992423,1cyclictest1-21systemd10:10:233
1893899240,23cyclictest17557-21apt-get10:16:083
1893899240,23cyclictest0-21swapper/312:08:533
1893899240,23cyclictest0-21swapper/311:48:093
1893899240,23cyclictest0-21swapper/309:34:573
1893899240,1cyclictest12719-21diskmemload09:12:373
1893899240,1cyclictest0-21swapper/311:17:463
18934992422,0cyclictest0-21swapper/211:13:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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