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2026-05-20 - 04:29

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 Wed May 20, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
263912326320,4sleep10-21swapper/119:08:041
262872316303,4sleep30-21swapper/319:06:463
261992315308,4sleep20-21swapper/219:05:362
262742314307,4sleep00-21swapper/019:06:350
26808993070,304cyclictest3265-21kworker/u16:3+efi_rts_wq23:45:131
26809992990,298cyclictest14711-21kworker/u16:2+efi_rts_wq23:04:422
26809992990,298cyclictest14711-21kworker/u16:2+efi_rts_wq21:45:152
26810992980,297cyclictest3265-21kworker/u16:3+efi_rts_wq23:20:133
26810992980,297cyclictest10268-21kworker/u16:0+efi_rts_wq22:45:123
26808992980,297cyclictest10268-21kworker/u16:0+efi_rts_wq22:55:121
26810992970,296cyclictest12961-21kworker/u16:1+efi_rts_wq20:20:123
26809992960,295cyclictest386-21kworker/u16:0+efi_rts_wq23:50:122
26807992960,295cyclictest14711-21kworker/u16:2+efi_rts_wq22:35:140
26807992940,293cyclictest4050-21kworker/u16:3+efi_rts_wq21:00:120
26810992930,292cyclictest386-21kworker/u16:0+efi_rts_wq23:39:503
26810992930,292cyclictest22296-21kworker/u16:1+efi_rts_wq00:20:143
26810992930,292cyclictest21545-21kworker/u16:2+efi_rts_wq19:14:023
26808992930,292cyclictest3265-21kworker/u16:3+efi_rts_wq00:30:001
26807992920,291cyclictest21545-21kworker/u16:2+efi_rts_wq20:45:120
26807992920,291cyclictest12961-21kworker/u16:1+efi_rts_wq19:30:110
26809992910,290cyclictest14711-21kworker/u16:2+efi_rts_wq22:05:142
26807992910,290cyclictest12961-21kworker/u16:1+efi_rts_wq20:54:190
26809992900,289cyclictest12961-21kworker/u16:1+efi_rts_wq20:45:122
26807992890,288cyclictest21545-21kworker/u16:2+efi_rts_wq19:39:070
26808992880,287cyclictest12961-21kworker/u16:1+efi_rts_wq19:40:121
26810992870,286cyclictest10268-21kworker/u16:0+efi_rts_wq22:30:123
26809992860,285cyclictest12961-21kworker/u16:1+efi_rts_wq19:55:122
26808992860,285cyclictest12961-21kworker/u16:1+efi_rts_wq20:40:121
26810992850,284cyclictest22296-21kworker/u16:1+efi_rts_wq00:04:553
26808992840,283cyclictest3265-21kworker/u16:3+efi_rts_wq00:00:141
26807992840,282cyclictest10268-21kworker/u16:0+efi_rts_wq21:50:130
26810992820,281cyclictest14711-21kworker/u16:2+efi_rts_wq21:35:123
26807992820,281cyclictest22296-21kworker/u16:1+efi_rts_wq00:25:120
26807992810,280cyclictest14711-21kworker/u16:2+efi_rts_wq22:15:140
26809992800,278cyclictest3265-21kworker/u16:3+efi_rts_wq23:35:132
26810992790,278cyclictest3265-21kworker/u16:3+efi_rts_wq00:19:573
26810992780,277cyclictest386-21kworker/u16:0+efi_rts_wq23:55:103
26810992780,277cyclictest21545-21kworker/u16:2+efi_rts_wq20:15:123
26808992780,277cyclictest10268-21kworker/u16:0+efi_rts_wq21:25:111
26807992780,277cyclictest3265-21kworker/u16:3+efi_rts_wq00:15:110
26810992760,275cyclictest3265-21kworker/u16:3+efi_rts_wq00:09:553
26807992760,274cyclictest14711-21kworker/u16:2+efi_rts_wq23:05:120
26809992750,274cyclictest386-21kworker/u16:0+efi_rts_wq23:40:122
26807992750,274cyclictest21545-21kworker/u16:2+efi_rts_wq20:35:110
26807992750,274cyclictest14711-21kworker/u16:2+efi_rts_wq21:49:290
26808992740,273cyclictest3265-21kworker/u16:3+efi_rts_wq00:05:191
26810992730,272cyclictest12961-21kworker/u16:1+efi_rts_wq20:25:123
26809992730,272cyclictest10268-21kworker/u16:0+efi_rts_wq22:50:142
26808992720,271cyclictest12961-21kworker/u16:1+efi_rts_wq20:10:141
26807992720,271cyclictest14711-21kworker/u16:2+efi_rts_wq23:10:110
26807992720,271cyclictest14711-21kworker/u16:2+efi_rts_wq22:10:120
26808992710,270cyclictest12961-21kworker/u16:1+efi_rts_wq19:25:121
26810992700,269cyclictest12961-21kworker/u16:1+efi_rts_wq20:00:123
26808992690,268cyclictest10268-21kworker/u16:0+efi_rts_wq21:39:271
26810992680,267cyclictest14711-21kworker/u16:2+efi_rts_wq21:15:143
26809992650,264cyclictest10268-21kworker/u16:0+efi_rts_wq22:20:132
26809992650,262cyclictest12961-21kworker/u16:1+efi_rts_wq19:35:132
26807992650,264cyclictest14711-21kworker/u16:2+efi_rts_wq21:35:120
26810992640,263cyclictest12961-21kworker/u16:1+efi_rts_wq20:45:123
26808992640,263cyclictest386-21kworker/u16:0+efi_rts_wq23:30:121
26807992640,263cyclictest21545-21kworker/u16:2+efi_rts_wq19:15:130
26808992620,259cyclictest3265-21kworker/u16:3+efi_rts_wq23:25:141
26810992610,260cyclictest12961-21kworker/u16:1+efi_rts_wq19:20:113
26808992610,260cyclictest26120-21kworker/u16:1+efi_rts_wq23:00:111
26810992600,259cyclictest21545-21kworker/u16:2+efi_rts_wq20:39:173
26810992600,259cyclictest12961-21kworker/u16:1+efi_rts_wq19:19:033
26808992600,259cyclictest4050-21kworker/u16:3+efi_rts_wq20:59:201
26810992590,258cyclictest12961-21kworker/u16:1+efi_rts_wq20:05:133
26808992560,255cyclictest14711-21kworker/u16:2+efi_rts_wq22:10:121
26807992550,254cyclictest10268-21kworker/u16:0+efi_rts_wq22:00:130
26808992540,253cyclictest10268-21kworker/u16:0+efi_rts_wq22:44:391
26807992530,252cyclictest14711-21kworker/u16:2+efi_rts_wq21:30:130
26810992520,251cyclictest14711-21kworker/u16:2+efi_rts_wq21:30:143
26808992490,248cyclictest21545-21kworker/u16:2+efi_rts_wq20:24:151
26810992480,247cyclictest21545-21kworker/u16:2+efi_rts_wq19:45:123
26808992460,245cyclictest386-21kworker/u16:0+efi_rts_wq23:40:111
26807992450,244cyclictest386-21kworker/u16:0+efi_rts_wq23:44:510
26810992440,243cyclictest10268-21kworker/u16:0+efi_rts_wq22:24:363
26807992420,241cyclictest14711-21kworker/u16:2+efi_rts_wq21:20:130
26809992410,240cyclictest10268-21kworker/u16:0+efi_rts_wq22:25:122
26808992400,239cyclictest10268-21kworker/u16:0+efi_rts_wq21:34:261
26810992380,237cyclictest386-21kworker/u16:0+efi_rts_wq23:34:493
26808992380,237cyclictest12961-21kworker/u16:1+efi_rts_wq20:50:131
26807992370,236cyclictest22296-21kworker/u16:1+efi_rts_wq00:30:130
26808992360,235cyclictest21545-21kworker/u16:2+efi_rts_wq19:54:101
26808992360,235cyclictest10268-21kworker/u16:0+efi_rts_wq22:30:121
26807992340,233cyclictest12961-21kworker/u16:1+efi_rts_wq20:14:130
26808992320,231cyclictest21545-21kworker/u16:2+efi_rts_wq19:59:111
26808992320,231cyclictest14711-21kworker/u16:2+efi_rts_wq21:45:151
26810992310,230cyclictest14711-21kworker/u16:2+efi_rts_wq21:55:123
26809992300,229cyclictest10268-21kworker/u16:0+efi_rts_wq22:49:392
26808992300,229cyclictest12961-21kworker/u16:1+efi_rts_wq21:10:131
26810992250,224cyclictest386-21kworker/u16:0+efi_rts_wq23:40:113
26808992230,222cyclictest22296-21kworker/u16:1+efi_rts_wq00:30:131
26807992230,222cyclictest14711-21kworker/u16:2+efi_rts_wq22:05:140
26810992200,219cyclictest386-21kworker/u16:0+efi_rts_wq23:49:523
26808992190,218cyclictest12961-21kworker/u16:1+efi_rts_wq19:24:051
26807992190,218cyclictest12961-21kworker/u16:1+efi_rts_wq20:40:120
26808992170,216cyclictest14711-21kworker/u16:2+efi_rts_wq21:40:131
26808992140,213cyclictest21545-21kworker/u16:2+efi_rts_wq20:49:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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