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2026-03-27 - 12:12

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 Fri Mar 27, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167372321313,5sleep20-21swapper/219:07:162
169272320307,4sleep30-21swapper/319:09:463
168232319308,9sleep10-21swapper/119:08:241
17216993150,314cyclictest32007-21kworker/u16:1+efi_rts_wq23:30:313
17213993150,314cyclictest7178-21kworker/u16:3+efi_rts_wq23:40:120
169322315308,5sleep00-21swapper/019:09:460
17214993140,313cyclictest24236-21kworker/u16:3+efi_rts_wq19:20:101
17214993140,313cyclictest21951-21kworker/u16:0+efi_rts_wq23:05:121
17214993130,312cyclictest31779-21kworker/u16:4+efi_rts_wq19:59:541
17216993120,311cyclictest1380-21kworker/u16:2+efi_rts_wq21:00:123
17215993110,310cyclictest32007-21kworker/u16:1+efi_rts_wq23:45:332
17216993100,309cyclictest1380-21kworker/u16:2+efi_rts_wq23:10:133
17214993090,308cyclictest21951-21kworker/u16:0+efi_rts_wq23:25:291
17216993070,306cyclictest32007-21kworker/u16:1+efi_rts_wq23:40:333
17213993070,306cyclictest1380-21kworker/u16:2+efi_rts_wq22:30:190
17213993060,305cyclictest21951-21kworker/u16:0+efi_rts_wq23:25:120
17213993060,305cyclictest1380-21kworker/u16:2+efi_rts_wq21:30:090
17216993040,303cyclictest15453-21kworker/u16:0+efi_rts_wq20:40:013
17214993040,303cyclictest1380-21kworker/u16:2+efi_rts_wq22:40:121
17213993030,302cyclictest1380-21kworker/u16:2+efi_rts_wq22:40:120
17216993000,299cyclictest17224-21kworker/u16:2+efi_rts_wq19:40:123
17213992980,297cyclictest8555-21kworker/u16:1+efi_rts_wq20:14:560
17213992980,297cyclictest32007-21kworker/u16:1+efi_rts_wq23:45:120
17213992970,294cyclictest1380-21kworker/u16:2+efi_rts_wq21:15:120
17214992960,295cyclictest17224-21kworker/u16:2+efi_rts_wq19:40:121
17216992950,294cyclictest15453-21kworker/u16:0+efi_rts_wq20:30:123
17214992950,293cyclictest32007-21kworker/u16:1+efi_rts_wq23:50:121
17215992940,293cyclictest1380-21kworker/u16:2+efi_rts_wq21:10:112
17213992940,293cyclictest25305-21kworker/u16:3+efi_rts_wq22:25:200
17213992940,293cyclictest25305-21kworker/u16:3+efi_rts_wq22:25:190
17216992930,292cyclictest26876-21kworker/u16:2+efi_rts_wq00:30:143
17216992930,292cyclictest17401-21kworker/u16:3+efi_rts_wq00:05:143
17214992930,292cyclictest17224-21kworker/u16:2+efi_rts_wq20:10:111
17213992920,291cyclictest32007-21kworker/u16:1+efi_rts_wq00:15:140
17213992920,291cyclictest1380-21kworker/u16:2+efi_rts_wq22:00:110
17214992890,288cyclictest32007-21kworker/u16:1+efi_rts_wq00:15:141
17216992880,287cyclictest21951-21kworker/u16:0+efi_rts_wq23:05:253
17214992880,287cyclictest31779-21kworker/u16:4+efi_rts_wq19:45:131
17214992880,287cyclictest25305-21kworker/u16:3+efi_rts_wq22:25:151
17214992880,287cyclictest25305-21kworker/u16:3+efi_rts_wq22:25:141
17213992880,287cyclictest1380-21kworker/u16:2+efi_rts_wq20:55:120
17216992870,286cyclictest1380-21kworker/u16:2+efi_rts_wq23:20:133
17215992870,286cyclictest21951-21kworker/u16:0+efi_rts_wq23:30:142
17214992860,285cyclictest1380-21kworker/u16:2+efi_rts_wq21:35:131
17215992840,283cyclictest24236-21kworker/u16:3+efi_rts_wq19:25:122
17213992840,283cyclictest15453-21kworker/u16:0+efi_rts_wq20:35:130
17216992800,279cyclictest21951-21kworker/u16:0+efi_rts_wq23:15:123
17215992800,278cyclictest1380-21kworker/u16:2+efi_rts_wq22:35:132
17214992800,279cyclictest8555-21kworker/u16:1+efi_rts_wq20:15:151
17213992800,279cyclictest31779-21kworker/u16:4+efi_rts_wq20:00:110
17216992790,278cyclictest32007-21kworker/u16:1+efi_rts_wq23:35:113
17214992790,278cyclictest2893-21kworker/u16:1+efi_rts_wq22:35:201
17216992780,277cyclictest1380-21kworker/u16:2+efi_rts_wq22:55:133
17215992770,276cyclictest1380-21kworker/u16:2+efi_rts_wq21:30:122
17214992770,276cyclictest1380-21kworker/u16:2+efi_rts_wq22:05:161
17214992760,275cyclictest32007-21kworker/u16:1+efi_rts_wq00:10:371
17216992750,274cyclictest25305-21kworker/u16:3+efi_rts_wq22:15:183
17215992750,274cyclictest25305-21kworker/u16:3+efi_rts_wq22:20:162
17216992740,273cyclictest1380-21kworker/u16:2+efi_rts_wq20:55:133
17214992740,273cyclictest13633-21kworker/u16:3+efi_rts_wq23:00:121
17213992730,272cyclictest15453-21kworker/u16:0+efi_rts_wq20:25:120
17215992700,267cyclictest3745-21kworker/u16:0+efi_rts_wq21:40:112
17214992700,269cyclictest24236-21kworker/u16:3+efi_rts_wq19:35:151
17215992660,265cyclictest17224-21kworker/u16:2+efi_rts_wq19:55:122
17213992650,264cyclictest32007-21kworker/u16:1+efi_rts_wq00:00:130
17213992650,264cyclictest1380-21kworker/u16:2+efi_rts_wq21:10:110
17216992640,263cyclictest15453-21kworker/u16:0+efi_rts_wq20:45:143
17215992630,262cyclictest7178-21kworker/u16:3+efi_rts_wq23:40:132
17215992630,262cyclictest17401-21kworker/u16:3+efi_rts_wq00:35:122
17213992630,262cyclictest17401-21kworker/u16:3+efi_rts_wq00:35:130
17216992620,261cyclictest17401-21kworker/u16:3+efi_rts_wq00:20:393
17215992620,261cyclictest1380-21kworker/u16:2+efi_rts_wq21:20:122
17214992610,260cyclictest1380-21kworker/u16:2+efi_rts_wq21:25:121
17213992610,260cyclictest8555-21kworker/u16:1+efi_rts_wq20:15:140
17214992590,258cyclictest31779-21kworker/u16:4+efi_rts_wq20:24:581
17214992590,258cyclictest1380-21kworker/u16:2+efi_rts_wq21:00:051
17216992560,255cyclictest25305-21kworker/u16:3+efi_rts_wq22:10:163
17216992560,255cyclictest13633-21kworker/u16:3+efi_rts_wq23:00:133
17215992560,255cyclictest17224-21kworker/u16:2+efi_rts_wq19:54:522
17214992560,255cyclictest24236-21kworker/u16:3+efi_rts_wq19:10:121
17213992560,253cyclictest3745-21kworker/u16:0+efi_rts_wq21:05:110
17216992550,254cyclictest1380-21kworker/u16:2+efi_rts_wq21:40:113
17215992550,253cyclictest31779-21kworker/u16:4+efi_rts_wq20:05:162
17214992550,254cyclictest17401-21kworker/u16:3+efi_rts_wq00:00:351
17214992540,253cyclictest31779-21kworker/u16:4+efi_rts_wq20:35:001
17214992530,252cyclictest1380-21kworker/u16:2+efi_rts_wq21:05:061
17213992520,251cyclictest25305-21kworker/u16:3+efi_rts_wq22:20:150
17213992510,250cyclictest24236-21kworker/u16:3+efi_rts_wq19:29:480
17215992500,249cyclictest17224-21kworker/u16:2+efi_rts_wq19:30:122
17215992490,248cyclictest24236-21kworker/u16:3+efi_rts_wq19:10:122
17214992490,248cyclictest3745-21kworker/u16:0+efi_rts_wq21:10:051
17214992480,247cyclictest31779-21kworker/u16:4+efi_rts_wq20:05:161
17213992480,245cyclictest21951-21kworker/u16:0+efi_rts_wq23:15:140
17214992470,246cyclictest31779-21kworker/u16:4+efi_rts_wq20:50:111
17214992470,246cyclictest17224-21kworker/u16:2+efi_rts_wq19:50:131
17214992460,245cyclictest1380-21kworker/u16:2+efi_rts_wq23:20:291
17214992440,242cyclictest2185-21kworker/u16:2+efi_rts_wq23:55:161
17213992440,243cyclictest8555-21kworker/u16:1+efi_rts_wq20:20:130
17213992440,243cyclictest12417-21kworker/u16:1+efi_rts_wq19:14:450
17215992430,242cyclictest15453-21kworker/u16:0+efi_rts_wq20:40:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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