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2025-07-01 - 12:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, 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.
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 rackfslot7s.osadl.org (updated Tue Jul 01, 2025 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
99690499280513,2788cyclictest1022672-21kworker/0:0+events20:35:140
99690499274911,2733cyclictest1096686-21kworker/0:2+events00:30:130
99691299271213,2695cyclictest1036745-21kworker/3:2+events21:35:183
99690499265313,2636cyclictest1038494-21kworker/0:1+events21:30:190
99690999263312,2617cyclictest1073580-21kworker/2:2+events23:10:142
9969049925860,2582cyclictest1062396-21kworker/0:1+events22:40:230
99690499254512,2529cyclictest1007160-21kworker/0:1+events19:52:240
99690999251511,2500cyclictest1013031-21kworker/2:2+events19:59:202
99690499250012,2485cyclictest1017819-21kworker/0:0+events20:19:190
99690499249812,2483cyclictest1038494-21kworker/0:1+events21:17:240
99690499249412,2478cyclictest1019432-21kworker/0:1+events20:24:410
99690499248912,2474cyclictest1001806-21kworker/0:2+events19:32:140
99690499248911,2474cyclictest1021073-21kworker/0:2+events20:27:370
99690499248712,2471cyclictest1038494-21kworker/0:1+events21:26:560
99690499248711,2472cyclictest1028750-21kworker/0:0+events20:54:390
99690499248612,2471cyclictest1031959-21kworker/0:2+events20:58:280
99690499248612,2470cyclictest1011343-21kworker/0:2+events20:11:010
99690499248612,2470cyclictest1011343-21kworker/0:2+events19:57:020
99690499248611,2472cyclictest1028750-21kworker/0:0+events20:49:200
99690499248611,2472cyclictest1028750-21kworker/0:0+events20:49:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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