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2025-11-03 - 11:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Mon Nov 03, 2025 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
380069322520,9sleep11753-21gnome-shell19:05:261
380725221130,8sleep22197014-21PK-Backend19:25:012
38079072880,5sleep00-21swapper/019:25:240
162399850,69rtkit-daemon0-21swapper/319:05:143
380123528465,13sleep20-21swapper/219:09:222
38092212830,8sleep32197014-21PK-Backend19:30:143
39080542760,5sleep21753-21gnome-shell00:10:262
162399740,10rtkit-daemon1622-21rtkit-daemon21:40:091
162399740,10rtkit-daemon1622-21rtkit-daemon21:40:091
380142699692,45cyclictest1753-21gnome-shell22:48:190
380105726945,16sleep00-21swapper/019:07:010
380142699672,36cyclictest3841205-40apt-check21:00:270
39048772660,13sleep126-21ksoftirqd/100:00:281
39048772660,13sleep126-21ksoftirqd/100:00:271
38398902660,8chrt2197014-21PK-Backend20:55:240
380142699662,46cyclictest3868019-40lsb_release22:15:210
380142699662,34cyclictest3811426-21df19:35:140
380142699661,38cyclictest3845343-21sed21:10:220
380142699653,43cyclictest3883730-21irqstats23:00:210
380142699652,37cyclictest1753-21gnome-shell23:54:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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