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2026-08-04 - 08:06

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 Tue Aug 04, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132322318312,4sleep20-21swapper/219:05:452
133242315308,5sleep00-21swapper/019:06:550
132312315307,5sleep10-21swapper/119:05:441
131912313306,5sleep30-21swapper/319:05:223
13833993010,300cyclictest19345-21kworker/u16:2+efi_rts_wq22:05:153
13831993010,298cyclictest8472-21kworker/u16:3+efi_rts_wq20:35:121
13833993000,299cyclictest8472-21kworker/u16:3+efi_rts_wq21:50:133
13831993000,297cyclictest8472-21kworker/u16:3+efi_rts_wq19:35:131
13831992990,298cyclictest8472-21kworker/u16:3+efi_rts_wq22:35:121
13830992980,296cyclictest19345-21kworker/u16:2+efi_rts_wq22:30:140
13833992960,295cyclictest8472-21kworker/u16:3+efi_rts_wq21:30:083
13833992960,295cyclictest8472-21kworker/u16:3+efi_rts_wq19:15:013
13833992960,295cyclictest19345-21kworker/u16:2+efi_rts_wq20:15:143
13831992960,295cyclictest19345-21kworker/u16:2+efi_rts_wq21:10:041
13831992960,295cyclictest19345-21kworker/u16:2+efi_rts_wq21:10:041
13833992950,294cyclictest8472-21kworker/u16:3+efi_rts_wq21:55:133
13832992950,294cyclictest19345-21kworker/u16:2+efi_rts_wq22:30:202
13830992940,293cyclictest29199-21kworker/u16:1+efi_rts_wq23:50:120
13830992940,293cyclictest19345-21kworker/u16:2+efi_rts_wq23:15:290
13831992930,292cyclictest8472-21kworker/u16:3+efi_rts_wq23:30:131
13833992920,291cyclictest8472-21kworker/u16:3+efi_rts_wq20:20:143
13831992920,291cyclictest14513-21kworker/u16:0+efi_rts_wq00:00:131
13832992910,289cyclictest19345-21kworker/u16:2+efi_rts_wq22:40:132
13830992900,289cyclictest19345-21kworker/u16:2+efi_rts_wq20:50:140
13831992890,288cyclictest8472-21kworker/u16:3+efi_rts_wq19:49:481
13831992890,288cyclictest19345-21kworker/u16:2+efi_rts_wq21:55:131
13830992880,286cyclictest8472-21kworker/u16:3+efi_rts_wq20:45:130
13830992870,285cyclictest19345-21kworker/u16:2+efi_rts_wq22:40:130
13833992860,285cyclictest19345-21kworker/u16:2+efi_rts_wq20:25:123
13832992860,285cyclictest21442-21kworker/u16:2+efi_rts_wq00:35:122
13831992850,284cyclictest8472-21kworker/u16:3+efi_rts_wq22:50:151
13831992840,283cyclictest8472-21kworker/u16:3+efi_rts_wq22:25:141
13831992840,283cyclictest19345-21kworker/u16:2+efi_rts_wq21:05:131
13831992830,282cyclictest8472-21kworker/u16:3+efi_rts_wq21:15:141
13833992820,281cyclictest19345-21kworker/u16:2+efi_rts_wq23:10:133
13833992820,279cyclictest19345-21kworker/u16:2+efi_rts_wq21:00:113
13832992820,281cyclictest19345-21kworker/u16:2+efi_rts_wq20:30:122
13832992800,279cyclictest8472-21kworker/u16:3+efi_rts_wq19:45:282
13830992800,276cyclictest8472-21kworker/u16:3+efi_rts_wq19:15:140
13833992790,278cyclictest8472-21kworker/u16:3+efi_rts_wq23:05:133
13832992790,278cyclictest8472-21kworker/u16:3+efi_rts_wq21:40:142
13831992770,276cyclictest21442-21kworker/u16:2+efi_rts_wq00:30:131
13832992760,275cyclictest19345-21kworker/u16:2+efi_rts_wq20:55:022
13830992750,274cyclictest21442-21kworker/u16:2+efi_rts_wq00:30:130
13833992740,273cyclictest19345-21kworker/u16:2+efi_rts_wq19:59:503
13833992740,273cyclictest19345-21kworker/u16:2+efi_rts_wq19:44:473
13830992740,273cyclictest14513-21kworker/u16:0+efi_rts_wq23:45:150
13831992710,270cyclictest19345-21kworker/u16:2+efi_rts_wq21:20:131
13833992700,269cyclictest19345-21kworker/u16:2+efi_rts_wq21:35:133
13830992700,269cyclictest19345-21kworker/u16:2+efi_rts_wq20:40:120
13833992690,268cyclictest19345-21kworker/u16:2+efi_rts_wq19:29:443
13833992690,267cyclictest8472-21kworker/u16:3+efi_rts_wq22:55:123
13831992690,268cyclictest19345-21kworker/u16:2+efi_rts_wq19:20:141
13833992680,267cyclictest19345-21kworker/u16:2+efi_rts_wq21:45:153
13833992660,265cyclictest8472-21kworker/u16:3+efi_rts_wq20:00:143
13831992660,265cyclictest8472-21kworker/u16:3+efi_rts_wq21:50:131
13830992660,265cyclictest19345-21kworker/u16:2+efi_rts_wq19:50:120
13831992650,264cyclictest14513-21kworker/u16:0+efi_rts_wq23:25:131
13833992630,262cyclictest8472-21kworker/u16:3+efi_rts_wq22:25:143
13832992630,262cyclictest29199-21kworker/u16:1+efi_rts_wq00:15:402
13831992610,260cyclictest19345-21kworker/u16:2+efi_rts_wq22:20:111
13832992600,257cyclictest29199-21kworker/u16:1+efi_rts_wq23:35:132
13832992580,257cyclictest19345-21kworker/u16:2+efi_rts_wq20:45:002
13831992580,257cyclictest19345-21kworker/u16:2+efi_rts_wq19:54:491
13830992580,257cyclictest19345-21kworker/u16:2+efi_rts_wq22:20:180
13833992560,255cyclictest14513-21kworker/u16:0+efi_rts_wq23:20:303
13832992550,254cyclictest8472-21kworker/u16:3+efi_rts_wq19:39:462
13833992540,253cyclictest8472-21kworker/u16:3+efi_rts_wq22:35:113
13831992540,253cyclictest8472-21kworker/u16:3+efi_rts_wq22:05:151
13831992530,252cyclictest19345-21kworker/u16:2+efi_rts_wq20:29:571
13832992520,251cyclictest19345-21kworker/u16:2+efi_rts_wq21:35:132
13830992520,251cyclictest19345-21kworker/u16:2+efi_rts_wq22:10:130
13830992500,249cyclictest8472-21kworker/u16:3+efi_rts_wq21:25:140
13830992500,248cyclictest19345-21kworker/u16:2+efi_rts_wq19:25:120
13833992490,246cyclictest8472-21kworker/u16:3+efi_rts_wq21:10:123
13833992490,246cyclictest8472-21kworker/u16:3+efi_rts_wq21:10:123
13831992490,248cyclictest19345-21kworker/u16:2+efi_rts_wq19:40:141
13831992480,247cyclictest21442-21kworker/u16:2+efi_rts_wq00:35:431
13833992460,245cyclictest19345-21kworker/u16:2+efi_rts_wq21:05:133
13830992460,245cyclictest8472-21kworker/u16:3+efi_rts_wq22:45:160
13832992450,244cyclictest29199-21kworker/u16:1+efi_rts_wq23:40:112
13831992450,244cyclictest8472-21kworker/u16:3+efi_rts_wq19:30:121
13832992440,243cyclictest19345-21kworker/u16:2+efi_rts_wq21:55:132
13830992440,243cyclictest29199-21kworker/u16:1+efi_rts_wq00:05:390
13833992430,241cyclictest8472-21kworker/u16:3+efi_rts_wq23:30:133
13830992390,238cyclictest8472-21kworker/u16:3+efi_rts_wq20:10:110
13833992380,237cyclictest8472-21kworker/u16:3+efi_rts_wq21:15:053
13833992350,234cyclictest14513-21kworker/u16:0+efi_rts_wq23:25:143
13833992320,231cyclictest14513-21kworker/u16:0+efi_rts_wq23:45:153
13832992320,231cyclictest14513-21kworker/u16:0+efi_rts_wq23:55:132
13831992310,230cyclictest29199-21kworker/u16:1+efi_rts_wq00:15:141
13830992310,230cyclictest8472-21kworker/u16:3+efi_rts_wq23:25:310
13832992300,229cyclictest8472-21kworker/u16:3+efi_rts_wq22:15:132
13831992300,229cyclictest29199-21kworker/u16:1+efi_rts_wq23:40:341
13831992290,228cyclictest8472-21kworker/u16:3+efi_rts_wq21:45:111
13830992290,228cyclictest19345-21kworker/u16:2+efi_rts_wq20:09:530
13830992280,227cyclictest14513-21kworker/u16:0+efi_rts_wq23:30:320
13830992270,226cyclictest8472-21kworker/u16:3+efi_rts_wq20:20:140
13831992260,225cyclictest14513-21kworker/u16:0+efi_rts_wq00:20:141
13833992250,224cyclictest31469-21kworker/u16:2+efi_rts_wq23:35:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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