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2025-10-14 - 20:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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.
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 50 highest latencies:
System rackeslot8s.osadl.org (updated Tue Oct 14, 2025 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236418499753747,5cyclictest2370463-21kworker/2:3+events08:07:212
236418699745737,6cyclictest256986-21kworker/3:0+events09:45:203
236418499745738,5cyclictest2370463-21kworker/2:3+events08:39:162
236418499744739,4cyclictest2370463-21kworker/2:3+events11:05:412
236418499743738,4cyclictest2370463-21kworker/2:3+events11:31:372
236418499743737,5cyclictest2370463-21kworker/2:3+events12:11:352
236418199743739,3cyclictest2709320-21kworker/1:0+events11:51:471
236418699742737,4cyclictest2566112-21turbostat09:54:553
236418499742737,4cyclictest2370463-21kworker/2:3+events11:39:152
236418499742737,4cyclictest2370463-21kworker/2:3+events11:17:302
236418199742738,3cyclictest2709320-21kworker/1:0+events11:55:421
236418499741736,4cyclictest2370463-21kworker/2:3+events11:22:222
236418499741736,4cyclictest2370463-21kworker/2:3+events11:11:162
236418499741735,5cyclictest2370463-21kworker/2:3+events08:01:442
236418199741737,3cyclictest2709320-21kworker/1:0+events12:31:261
236418699740737,2cyclictest2516013-21turbostat09:14:563
236418199740736,3cyclictest2709320-21kworker/1:0+events12:04:111
236418499738734,3cyclictest2370463-21kworker/2:3+events11:26:252
236418199738734,3cyclictest2709320-21kworker/1:0+events12:26:051
236418199738734,3cyclictest2709320-21kworker/1:0+events12:07:211
236418199738734,3cyclictest2528183-21kworker/1:2+events11:41:281
236418199736732,3cyclictest2709320-21kworker/1:0+events11:47:441
236418199735731,3cyclictest2709320-21kworker/1:0+events12:37:301
236418699733729,3cyclictest256986-21kworker/3:0+events08:12:063
236418699732728,3cyclictest256986-21kworker/3:0+events07:38:353
236418699728725,2cyclictest2472470-21turbostat08:39:553
236418699728722,5cyclictest256986-21kworker/3:0+events08:30:203
236418699726722,3cyclictest256986-21kworker/3:0+events09:25:223
236418699726719,6cyclictest256986-21kworker/3:0+events10:43:173
236418699721717,3cyclictest256986-21kworker/3:0+events07:31:473
236418699720716,3cyclictest256986-21kworker/3:0+events08:22:283
236418699716712,3cyclictest256986-21kworker/3:0+events09:09:183
236418699715712,2cyclictest2653147-21kworker/3:2+events12:23:333
236418699715709,5cyclictest2370357-21turbostat07:19:563
236418699712709,2cyclictest2653147-21kworker/3:2+events11:03:363
236418699711706,4cyclictest256986-21kworker/3:0+events09:40:213
236418699711706,4cyclictest256986-21kworker/3:0+events08:57:103
236418699709706,2cyclictest256986-21kworker/3:0+events08:45:223
236418699709704,4cyclictest256986-21kworker/3:0+events08:15:213
236418699705702,2cyclictest256986-21kworker/3:0+events10:01:593
236418699705702,2cyclictest256986-21kworker/3:0+events07:14:233
236418699702699,2cyclictest256986-21kworker/3:0+events07:50:213
236418699701697,3cyclictest256986-21kworker/3:0+events09:22:213
236418699699692,6cyclictest256986-21kworker/3:0+events10:25:213
236418699697693,3cyclictest2634797-21turbostat10:49:553
236418699695692,2cyclictest2491161-21turbostat08:54:553
236418699694684,5cyclictest256986-21kworker/3:0+events09:00:213
236418699689685,3cyclictest256986-21kworker/3:0+events10:14:223
236418699689684,4cyclictest256986-21kworker/3:0+events09:36:253
236418199689685,3cyclictest2697216-21turbostat11:39:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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