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2026-08-26 - 02:22

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 25, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46812323316,5sleep30-21swapper/307:08:013
48242319297,5sleep20-21swapper/207:09:522
47242315307,5sleep10-21swapper/107:08:351
46462314307,5sleep00-21swapper/007:07:330
5102993000,299cyclictest6622-21kworker/u16:3+efi_rts_wq12:20:142
5100993000,299cyclictest11395-21kworker/u16:0+efi_rts_wq10:25:130
5103992990,298cyclictest24142-21kworker/u16:3+efi_rts_wq10:35:133
5103992990,298cyclictest24142-21kworker/u16:3+efi_rts_wq10:35:123
5101992980,297cyclictest21976-21kworker/u16:2+efi_rts_wq08:05:141
5103992970,296cyclictest21976-21kworker/u16:2+efi_rts_wq08:12:143
5101992970,296cyclictest15481-21kworker/u16:3+efi_rts_wq08:40:121
5102992960,293cyclictest2902-21kworker/u16:1+efi_rts_wq09:50:122
5101992960,294cyclictest2438-21kworker/u16:3+efi_rts_wq10:57:461
5102992920,291cyclictest6063-21kworker/u16:2+efi_rts_wq11:10:132
5101992900,289cyclictest2902-21kworker/u16:1+efi_rts_wq09:40:141
5102992890,288cyclictest15594-21kworker/u16:0+efi_rts_wq07:15:142
5102992890,288cyclictest13735-21kworker/u16:3+efi_rts_wq11:30:122
5101992890,288cyclictest6063-21kworker/u16:2+efi_rts_wq11:15:121
5100992890,288cyclictest4611-21kworker/u16:1+efi_rts_wq07:25:120
5103992880,285cyclictest17882-21kworker/u16:1+efi_rts_wq10:50:153
5101992880,287cyclictest2902-21kworker/u16:1+efi_rts_wq09:45:131
5100992860,285cyclictest6612-21kworker/u16:1+efi_rts_wq08:35:120
5100992860,285cyclictest29510-21kworker/u16:2+efi_rts_wq12:05:150
5101992850,284cyclictest4611-21kworker/u16:1+efi_rts_wq07:50:131
5101992840,283cyclictest9287-21kworker/u16:2+efi_rts_wq10:00:121
5101992840,283cyclictest11395-21kworker/u16:0+efi_rts_wq10:20:101
5101992830,282cyclictest29510-21kworker/u16:2+efi_rts_wq12:13:001
5101992830,282cyclictest2438-21kworker/u16:3+efi_rts_wq10:52:461
5101992830,282cyclictest21976-21kworker/u16:2+efi_rts_wq08:55:121
5100992830,282cyclictest26569-21kworker/u16:0+efi_rts_wq11:05:130
5103992820,281cyclictest6612-21kworker/u16:1+efi_rts_wq09:07:263
5102992820,281cyclictest15481-21kworker/u16:3+efi_rts_wq08:00:102
5102992810,280cyclictest29263-21kworker/u16:3+efi_rts_wq09:55:132
5101992810,280cyclictest13735-21kworker/u16:3+efi_rts_wq11:45:111
5100992810,280cyclictest4611-21kworker/u16:1+efi_rts_wq07:20:130
5100992800,279cyclictest21976-21kworker/u16:2+efi_rts_wq09:20:130
5103992790,278cyclictest1888-21kworker/u16:1+efi_rts_wq12:15:123
5100992760,275cyclictest13735-21kworker/u16:3+efi_rts_wq11:25:130
5103992750,274cyclictest21976-21kworker/u16:2+efi_rts_wq09:10:123
5101992740,273cyclictest13735-21kworker/u16:3+efi_rts_wq11:25:121
5101992730,272cyclictest15481-21kworker/u16:3+efi_rts_wq08:50:131
5100992730,272cyclictest25105-21kworker/u16:0+efi_rts_wq09:27:290
5102992710,270cyclictest13735-21kworker/u16:3+efi_rts_wq11:35:122
5103992700,269cyclictest12907-21kworker/u16:0+efi_rts_wq12:30:143
5102992700,269cyclictest29510-21kworker/u16:2+efi_rts_wq11:50:142
5100992700,269cyclictest6612-21kworker/u16:1+efi_rts_wq08:45:120
5100992700,269cyclictest15481-21kworker/u16:3+efi_rts_wq07:55:130
5100992700,268cyclictest20879-21kworker/u16:1+efi_rts_wq11:40:130
5101992690,268cyclictest31005-21kworker/u16:0+efi_rts_wq08:27:171
5103992670,266cyclictest29510-21kworker/u16:2+efi_rts_wq12:35:123
5102992670,266cyclictest21976-21kworker/u16:2+efi_rts_wq08:25:142
5101992670,266cyclictest2902-21kworker/u16:1+efi_rts_wq09:50:131
5100992660,265cyclictest21976-21kworker/u16:2+efi_rts_wq09:00:140
5100992650,264cyclictest29263-21kworker/u16:3+efi_rts_wq09:37:310
5100992640,263cyclictest29510-21kworker/u16:2+efi_rts_wq12:33:030
5100992640,263cyclictest2902-21kworker/u16:1+efi_rts_wq09:40:140
5100992640,263cyclictest16692-21kworker/u16:2+efi_rts_wq07:10:170
5101992630,262cyclictest9287-21kworker/u16:2+efi_rts_wq10:10:121
5101992630,262cyclictest12907-21kworker/u16:0+efi_rts_wq12:23:021
5100992630,262cyclictest15481-21kworker/u16:3+efi_rts_wq07:32:110
5102992620,259cyclictest29510-21kworker/u16:2+efi_rts_wq11:55:122
5100992610,260cyclictest21976-21kworker/u16:2+efi_rts_wq09:30:140
5102992590,256cyclictest6063-21kworker/u16:2+efi_rts_wq11:15:122
5103992570,253cyclictest29263-21kworker/u16:3+efi_rts_wq09:35:133
5102992570,256cyclictest29510-21kworker/u16:2+efi_rts_wq12:25:122
5103992560,255cyclictest9287-21kworker/u16:2+efi_rts_wq10:15:133
5101992560,255cyclictest21976-21kworker/u16:2+efi_rts_wq08:15:121
5101992540,251cyclictest21976-21kworker/u16:2+efi_rts_wq09:30:141
5100992540,253cyclictest21976-21kworker/u16:2+efi_rts_wq08:25:130
5103992520,251cyclictest6612-21kworker/u16:1+efi_rts_wq08:35:133
5102992520,251cyclictest29510-21kworker/u16:2+efi_rts_wq12:00:132
5102992520,251cyclictest2438-21kworker/u16:3+efi_rts_wq11:02:482
5100992510,250cyclictest13735-21kworker/u16:3+efi_rts_wq11:45:130
5101992490,248cyclictest29510-21kworker/u16:2+efi_rts_wq12:35:131
5100992490,247cyclictest17882-21kworker/u16:1+efi_rts_wq10:45:120
5103992480,247cyclictest15481-21kworker/u16:3+efi_rts_wq07:47:133
5101992480,247cyclictest26569-21kworker/u16:0+efi_rts_wq11:05:121
5101992460,244cyclictest17882-21kworker/u16:1+efi_rts_wq10:40:141
5101992440,243cyclictest16692-21kworker/u16:2+efi_rts_wq07:10:161
5100992430,242cyclictest15481-21kworker/u16:3+efi_rts_wq08:00:110
5101992420,241cyclictest26569-21kworker/u16:0+efi_rts_wq11:00:151
5101992410,240cyclictest21976-21kworker/u16:2+efi_rts_wq09:05:131
5101992410,240cyclictest1888-21kworker/u16:1+efi_rts_wq12:15:121
5100992410,240cyclictest31005-21kworker/u16:0+efi_rts_wq08:20:110
5102992390,238cyclictest4611-21kworker/u16:1+efi_rts_wq07:45:142
5103992380,237cyclictest6063-21kworker/u16:2+efi_rts_wq11:20:143
5102992380,237cyclictest2438-21kworker/u16:3+efi_rts_wq10:55:132
5102992380,237cyclictest21976-21kworker/u16:2+efi_rts_wq08:15:132
5100992380,237cyclictest13735-21kworker/u16:3+efi_rts_wq11:35:130
5103992370,236cyclictest21976-21kworker/u16:2+efi_rts_wq09:02:243
5101992330,232cyclictest15594-21kworker/u16:0+efi_rts_wq07:17:091
5101992320,231cyclictest29510-21kworker/u16:2+efi_rts_wq11:50:141
5102992280,227cyclictest24142-21kworker/u16:3+efi_rts_wq10:35:122
5102992280,227cyclictest24142-21kworker/u16:3+efi_rts_wq10:35:112
5102992250,224cyclictest21976-21kworker/u16:2+efi_rts_wq09:12:262
5100992250,224cyclictest6612-21kworker/u16:1+efi_rts_wq08:42:210
5103992240,223cyclictest29510-21kworker/u16:2+efi_rts_wq11:50:143
5100992210,220cyclictest15481-21kworker/u16:3+efi_rts_wq08:07:130
5100992160,215cyclictest23191-21kworker/u16:0+efi_rts_wq11:55:130
5101992150,214cyclictest15481-21kworker/u16:3+efi_rts_wq08:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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