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2025-08-30 - 00:58

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 Fri Aug 29, 2025 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6157522730,6sleep01753-21gnome-shell07:05:240
7344021080,5sleep00-21swapper/007:36:220
6255799942,89cyclictest0-21swapper/011:41:160
6255799932,88cyclictest0-21swapper/011:39:460
6255799932,87cyclictest0-21swapper/011:56:410
6255799862,73cyclictest1753-21gnome-shell11:45:210
6133728644,34sleep30-21swapper/307:05:213
162399830,7rtkit-daemon2197014-21PK-Backend09:38:193
1284522820,14sleep2331rcuc/210:15:022
1284522820,14sleep2331rcuc/210:15:022
6255799812,36cyclictest156568-21munin-run11:35:000
6255799811,75cyclictest1753-21gnome-shell11:50:270
162399810,8rtkit-daemon1753-21gnome-shell11:21:363
1220022810,5sleep1251rcuc/109:55:211
6255799802,73cyclictest1753-21gnome-shell11:28:150
162399800,9rtkit-daemon144987-21idleruntime11:00:193
162399800,7rtkit-daemon854-21avahi-daemon07:11:363
6255799792,35cyclictest1753-21gnome-shell11:22:160
162399790,7rtkit-daemon2197014-21PK-Backend10:10:363
162399790,7rtkit-daemon2197014-21PK-Backend10:10:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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