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2026-07-22 - 05:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #3

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 50 highest latencies:
System rackcslot3s.osadl.org (updated Wed Jul 22, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
107252320314,4sleep10-21swapper/119:07:151
107962318304,5sleep00-21swapper/019:08:110
105972318304,4sleep30-21swapper/319:05:373
106232315309,4sleep20-21swapper/219:05:562
11205993020,301cyclictest14544-21kworker/u16:1+efi_rts_wq21:10:143
11202992990,297cyclictest14544-21kworker/u16:1+efi_rts_wq20:55:140
11203992980,297cyclictest18832-21kworker/u16:3+efi_rts_wq21:45:131
11202992980,297cyclictest6587-21kworker/u16:3+efi_rts_wq00:30:120
11205992970,296cyclictest25484-21kworker/u16:2+efi_rts_wq00:10:253
11205992970,296cyclictest18993-21kworker/u16:3+efi_rts_wq19:39:333
11205992970,296cyclictest18993-21kworker/u16:3+efi_rts_wq19:39:323
11203992970,296cyclictest16916-21kworker/u16:0+efi_rts_wq19:25:131
11205992960,295cyclictest4307-21kworker/u16:0+efi_rts_wq20:40:153
11205992960,295cyclictest14544-21kworker/u16:1+efi_rts_wq21:00:133
11203992960,295cyclictest14544-21kworker/u16:1+efi_rts_wq21:25:141
11202992960,295cyclictest19835-21kworker/u16:2+efi_rts_wq20:19:400
11202992960,295cyclictest14544-21kworker/u16:1+efi_rts_wq21:20:150
11204992950,294cyclictest18993-21kworker/u16:3+efi_rts_wq19:59:372
11204992930,292cyclictest19835-21kworker/u16:2+efi_rts_wq20:10:132
11203992930,292cyclictest6587-21kworker/u16:3+efi_rts_wq00:20:131
11204992920,290cyclictest14544-21kworker/u16:1+efi_rts_wq22:35:052
11205992910,290cyclictest25484-21kworker/u16:2+efi_rts_wq00:00:143
11203992910,290cyclictest18832-21kworker/u16:3+efi_rts_wq21:50:121
11204992900,289cyclictest25484-21kworker/u16:2+efi_rts_wq23:35:122
11204992900,289cyclictest18832-21kworker/u16:3+efi_rts_wq22:30:142
11202992900,289cyclictest19835-21kworker/u16:2+efi_rts_wq19:35:120
11202992900,289cyclictest19835-21kworker/u16:2+efi_rts_wq19:35:120
11202992900,288cyclictest8428-21kworker/u16:0+efi_rts_wq22:55:140
11205992880,286cyclictest18832-21kworker/u16:3+efi_rts_wq22:05:173
11202992880,287cyclictest18993-21kworker/u16:3+efi_rts_wq20:00:130
11202992880,285cyclictest25484-21kworker/u16:2+efi_rts_wq23:55:120
11205992870,286cyclictest18832-21kworker/u16:3+efi_rts_wq21:40:133
11203992870,286cyclictest18993-21kworker/u16:3+efi_rts_wq19:20:121
11202992850,284cyclictest16097-21kworker/u16:0+efi_rts_wq23:20:130
11202992840,283cyclictest25484-21kworker/u16:2+efi_rts_wq00:35:130
11202992840,283cyclictest25484-21kworker/u16:2+efi_rts_wq00:10:120
11205992820,281cyclictest23090-21kworker/u16:3+efi_rts_wq23:30:163
11204992810,280cyclictest18832-21kworker/u16:3+efi_rts_wq22:20:122
11202992810,280cyclictest19835-21kworker/u16:2+efi_rts_wq20:20:130
11202992810,280cyclictest18832-21kworker/u16:3+efi_rts_wq20:45:130
11205992790,278cyclictest18993-21kworker/u16:3+efi_rts_wq19:55:143
11205992790,278cyclictest18832-21kworker/u16:3+efi_rts_wq21:30:133
11202992790,278cyclictest18993-21kworker/u16:3+efi_rts_wq19:50:110
11202992780,277cyclictest14544-21kworker/u16:1+efi_rts_wq22:40:070
11203992770,276cyclictest14544-21kworker/u16:1+efi_rts_wq22:00:131
11202992750,274cyclictest19835-21kworker/u16:2+efi_rts_wq20:10:140
11204992740,273cyclictest16916-21kworker/u16:0+efi_rts_wq19:30:132
11202992740,273cyclictest6587-21kworker/u16:3+efi_rts_wq00:15:130
11202992740,273cyclictest19835-21kworker/u16:2+efi_rts_wq20:30:130
11202992740,272cyclictest4307-21kworker/u16:0+efi_rts_wq20:40:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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