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2025-12-29 - 11:39

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 100 highest latencies:
System rackcslot3s.osadl.org (updated Mon Dec 29, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23852319304,5sleep10-21swapper/119:09:551
21332318304,5sleep20-21swapper/219:06:402
2657993160,314cyclictest21665-21kworker/u16:0+efi_rts_wq23:45:172
20402315307,5sleep30-21swapper/319:05:283
22972314306,5sleep00-21swapper/019:08:460
2657993130,312cyclictest5646-21kworker/u16:2+efi_rts_wq19:25:152
2656993100,309cyclictest14897-21kworker/u16:1+efi_rts_wq20:30:121
2658993080,307cyclictest28758-21kworker/u16:2+efi_rts_wq22:45:563
2658993080,307cyclictest14897-21kworker/u16:1+efi_rts_wq21:20:133
2655993080,307cyclictest31151-21kworker/u16:2+efi_rts_wq00:11:150
2658993060,305cyclictest14897-21kworker/u16:1+efi_rts_wq21:55:133
2658993060,305cyclictest14897-21kworker/u16:1+efi_rts_wq20:55:153
2658993050,304cyclictest31151-21kworker/u16:2+efi_rts_wq00:25:133
2655993050,302cyclictest19374-21kworker/u16:3+efi_rts_wq23:45:160
2658993030,302cyclictest14897-21kworker/u16:1+efi_rts_wq19:55:143
2655993030,302cyclictest5646-21kworker/u16:2+efi_rts_wq19:40:150
2658993020,301cyclictest28758-21kworker/u16:2+efi_rts_wq23:10:143
2658993020,301cyclictest14728-21kworker/u16:0+efi_rts_wq21:45:163
2656993020,301cyclictest5646-21kworker/u16:2+efi_rts_wq19:35:111
2655993020,301cyclictest19374-21kworker/u16:3+efi_rts_wq00:05:130
2655993020,301cyclictest14897-21kworker/u16:1+efi_rts_wq21:15:140
2658993000,299cyclictest5646-21kworker/u16:2+efi_rts_wq19:30:143
2658992990,298cyclictest14897-21kworker/u16:1+efi_rts_wq20:15:173
2656992990,298cyclictest5646-21kworker/u16:2+efi_rts_wq19:55:221
2655992990,298cyclictest14897-21kworker/u16:1+efi_rts_wq20:50:120
2656992980,297cyclictest5646-21kworker/u16:2+efi_rts_wq20:20:161
2656992980,297cyclictest4995-21kworker/u16:1+efi_rts_wq00:15:131
2657992970,295cyclictest12998-21kworker/u16:1+efi_rts_wq23:30:162
2656992970,296cyclictest14897-21kworker/u16:1+efi_rts_wq22:15:151
2655992970,296cyclictest12998-21kworker/u16:1+efi_rts_wq23:26:040
2657992960,295cyclictest5646-21kworker/u16:2+efi_rts_wq20:50:312
2657992960,295cyclictest5646-21kworker/u16:2+efi_rts_wq19:15:132
2655992960,295cyclictest5646-21kworker/u16:2+efi_rts_wq19:55:140
2655992960,295cyclictest28758-21kworker/u16:2+efi_rts_wq23:11:000
2656992950,294cyclictest14897-21kworker/u16:1+efi_rts_wq22:05:141
2658992940,293cyclictest14728-21kworker/u16:0+efi_rts_wq21:50:443
2656992930,292cyclictest14897-21kworker/u16:1+efi_rts_wq20:10:231
2658992920,291cyclictest14897-21kworker/u16:1+efi_rts_wq20:10:143
2657992920,290cyclictest28758-21kworker/u16:2+efi_rts_wq23:15:142
2656992920,291cyclictest28758-21kworker/u16:2+efi_rts_wq23:06:001
2655992920,291cyclictest12998-21kworker/u16:1+efi_rts_wq23:20:140
2658992900,289cyclictest21665-21kworker/u16:0+efi_rts_wq23:40:133
2657992900,289cyclictest14728-21kworker/u16:0+efi_rts_wq21:35:142
2656992900,289cyclictest14728-21kworker/u16:0+efi_rts_wq22:25:141
2657992890,288cyclictest21665-21kworker/u16:0+efi_rts_wq23:35:132
2656992890,288cyclictest14897-21kworker/u16:1+efi_rts_wq22:10:151
2655992890,288cyclictest14728-21kworker/u16:0+efi_rts_wq22:25:140
2655992880,287cyclictest14897-21kworker/u16:1+efi_rts_wq20:55:140
2657992870,286cyclictest5646-21kworker/u16:2+efi_rts_wq20:40:132
2657992870,286cyclictest5646-21kworker/u16:2+efi_rts_wq19:10:142
2658992860,285cyclictest5646-21kworker/u16:2+efi_rts_wq20:45:313
2657992860,285cyclictest14897-21kworker/u16:1+efi_rts_wq20:00:142
2657992860,284cyclictest19374-21kworker/u16:3+efi_rts_wq00:00:122
2656992860,283cyclictest14897-21kworker/u16:1+efi_rts_wq21:15:141
2655992860,285cyclictest19374-21kworker/u16:3+efi_rts_wq23:31:040
2655992860,285cyclictest14897-21kworker/u16:1+efi_rts_wq21:30:130
2655992850,284cyclictest14897-21kworker/u16:1+efi_rts_wq19:10:130
2656992840,283cyclictest14897-21kworker/u16:1+efi_rts_wq22:40:541
2655992840,283cyclictest14897-21kworker/u16:1+efi_rts_wq22:00:460
2658992830,282cyclictest14897-21kworker/u16:1+efi_rts_wq21:30:393
2658992830,281cyclictest5646-21kworker/u16:2+efi_rts_wq20:20:163
2656992830,282cyclictest28758-21kworker/u16:2+efi_rts_wq23:25:141
2656992830,282cyclictest14728-21kworker/u16:0+efi_rts_wq21:05:351
2658992800,279cyclictest4995-21kworker/u16:1+efi_rts_wq00:31:193
2658992790,278cyclictest5646-21kworker/u16:2+efi_rts_wq19:20:133
2658992790,278cyclictest14897-21kworker/u16:1+efi_rts_wq22:00:133
2656992790,278cyclictest5646-21kworker/u16:2+efi_rts_wq20:25:141
2656992790,278cyclictest14897-21kworker/u16:1+efi_rts_wq22:45:151
2655992790,278cyclictest5646-21kworker/u16:2+efi_rts_wq20:40:120
2657992780,277cyclictest14897-21kworker/u16:1+efi_rts_wq22:15:512
2656992780,277cyclictest5646-21kworker/u16:2+efi_rts_wq19:40:161
2658992770,276cyclictest31656-21kworker/u16:3+efi_rts_wq22:55:183
2655992770,276cyclictest31151-21kworker/u16:2+efi_rts_wq00:21:170
2657992750,274cyclictest14897-21kworker/u16:1+efi_rts_wq21:50:142
2655992730,272cyclictest14897-21kworker/u16:1+efi_rts_wq22:35:130
2658992690,268cyclictest14897-21kworker/u16:1+efi_rts_wq20:05:143
2658992690,268cyclictest14897-21kworker/u16:1+efi_rts_wq20:05:133
2658992680,267cyclictest5646-21kworker/u16:2+efi_rts_wq20:35:153
2658992670,266cyclictest5646-21kworker/u16:2+efi_rts_wq20:40:293
2657992660,265cyclictest14897-21kworker/u16:1+efi_rts_wq21:30:132
2657992660,264cyclictest28758-21kworker/u16:2+efi_rts_wq23:00:172
2655992650,264cyclictest14897-21kworker/u16:1+efi_rts_wq20:45:140
2655992630,262cyclictest31656-21kworker/u16:3+efi_rts_wq23:05:140
2658992610,260cyclictest14897-21kworker/u16:1+efi_rts_wq21:05:173
2655992610,260cyclictest5646-21kworker/u16:2+efi_rts_wq20:00:220
2656992600,259cyclictest14728-21kworker/u16:0+efi_rts_wq21:10:141
2658992590,258cyclictest28758-21kworker/u16:2+efi_rts_wq23:15:133
2655992590,258cyclictest14897-21kworker/u16:1+efi_rts_wq22:40:120
2655992550,254cyclictest14897-21kworker/u16:1+efi_rts_wq21:40:120
2658992540,252cyclictest19374-21kworker/u16:3+efi_rts_wq23:45:153
2655992540,253cyclictest14728-21kworker/u16:0+efi_rts_wq21:20:370
2658992530,252cyclictest5646-21kworker/u16:2+efi_rts_wq19:45:143
2656992500,249cyclictest14897-21kworker/u16:1+efi_rts_wq20:00:141
2655992470,246cyclictest31151-21kworker/u16:2+efi_rts_wq00:35:170
2657992450,244cyclictest31151-21kworker/u16:2+efi_rts_wq00:25:142
2655992450,244cyclictest14897-21kworker/u16:1+efi_rts_wq20:20:250
2656992440,243cyclictest14897-21kworker/u16:1+efi_rts_wq21:45:431
2658992430,242cyclictest19374-21kworker/u16:3+efi_rts_wq23:51:113
2655992430,242cyclictest28758-21kworker/u16:2+efi_rts_wq22:50:560
2656992390,237cyclictest31656-21kworker/u16:3+efi_rts_wq22:50:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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