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2026-06-05 - 16:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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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  Phytec
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.

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 rackbslot5s.osadl.org (updated Fri Jun 05, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1957125995425,25cyclictest1961292-21sendmail07:20:010
1957132995037,10cyclictest311ktimers/207:40:122
195712599471,36cyclictest0-21swapper/009:50:110
195712599461,40cyclictest0-21swapper/010:25:110
195712599461,36cyclictest0-21swapper/011:25:120
195712599461,34cyclictest0-21swapper/010:00:120
195712599451,41cyclictest1985398-21apt-get08:30:110
195712599451,39cyclictest2061210-21/usr/sbin/munin12:10:140
195712599451,39cyclictest1968469-21/usr/sbin/munin07:40:160
1957127994430,9cyclictest231ktimers/107:40:121
1957125994436,4cyclictest1958822-21apt-config07:15:010
1957125994423,16cyclictest0-21swapper/010:55:260
1957125994417,23cyclictest0-21swapper/007:30:170
195712599441,40cyclictest2015679-21awk09:55:250
195712599441,40cyclictest1982322-21/usr/sbin/munin08:20:170
1957127994330,9cyclictest231ktimers/110:45:111
195712599432,25cyclictest2019485-21cron10:09:590
195712599432,25cyclictest2019485-21cron10:09:590
1957125994319,22cyclictest0-21swapper/009:25:140
195712599431,39cyclictest2050302-21cron11:39:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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