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2026-03-24 - 06:10

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 Mar 24, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242792330303,24sleep00-21swapper/019:08:350
242712319311,5sleep20-21swapper/219:08:302
242232319305,4sleep10-21swapper/119:07:531
240442317311,4sleep30-21swapper/319:05:343
24747993150,314cyclictest26039-21kworker/u16:2+efi_rts_wq20:55:130
24750993140,313cyclictest32719-21kworker/u16:0+efi_rts_wq21:15:131
24747993130,312cyclictest31068-21kworker/u16:3+efi_rts_wq00:10:140
24754993120,311cyclictest31068-21kworker/u16:3+efi_rts_wq00:15:143
24750993120,311cyclictest18332-21kworker/u16:1+efi_rts_wq20:30:041
24754993110,310cyclictest31068-21kworker/u16:3+efi_rts_wq00:10:143
24752993110,310cyclictest27958-21kworker/u16:3+efi_rts_wq20:10:012
24754993070,306cyclictest32719-21kworker/u16:0+efi_rts_wq21:05:143
24754993070,306cyclictest23051-21kworker/u16:0+efi_rts_wq23:35:113
24747993070,306cyclictest23051-21kworker/u16:0+efi_rts_wq23:40:130
24752993060,305cyclictest17986-21kworker/u16:1+efi_rts_wq00:25:142
24750993060,305cyclictest21502-21kworker/u16:1+efi_rts_wq21:30:131
24754993050,303cyclictest25516-21kworker/u16:3+efi_rts_wq22:35:133
24747993050,304cyclictest31068-21kworker/u16:3+efi_rts_wq00:05:140
24747993050,304cyclictest27958-21kworker/u16:3+efi_rts_wq19:30:120
24747993050,304cyclictest25516-21kworker/u16:3+efi_rts_wq21:35:120
24752993020,301cyclictest27958-21kworker/u16:3+efi_rts_wq20:25:052
24752993020,301cyclictest26039-21kworker/u16:2+efi_rts_wq21:25:132
24750993020,301cyclictest27770-21kworker/u16:0+efi_rts_wq19:19:521
24752993010,300cyclictest32719-21kworker/u16:0+efi_rts_wq21:00:102
24747993010,300cyclictest23051-21kworker/u16:0+efi_rts_wq23:35:110
24752992990,298cyclictest18332-21kworker/u16:1+efi_rts_wq19:25:142
24750992980,297cyclictest32719-21kworker/u16:0+efi_rts_wq21:25:131
24754992970,296cyclictest27958-21kworker/u16:3+efi_rts_wq19:45:143
24754992960,293cyclictest27770-21kworker/u16:0+efi_rts_wq19:20:123
24750992960,295cyclictest32719-21kworker/u16:0+efi_rts_wq21:20:141
24752992950,294cyclictest4075-21kworker/u16:2+efi_rts_wq23:15:132
24750992950,294cyclictest27958-21kworker/u16:3+efi_rts_wq20:05:121
24752992940,292cyclictest31068-21kworker/u16:3+efi_rts_wq23:55:132
24747992940,293cyclictest25516-21kworker/u16:3+efi_rts_wq22:40:130
24754992930,292cyclictest32719-21kworker/u16:0+efi_rts_wq20:35:163
24750992930,292cyclictest31068-21kworker/u16:3+efi_rts_wq00:25:461
24747992930,292cyclictest27770-21kworker/u16:0+efi_rts_wq19:15:130
24752992920,291cyclictest21502-21kworker/u16:1+efi_rts_wq21:40:122
24747992920,291cyclictest20477-21kworker/u16:4+efi_rts_wq23:30:130
24754992910,290cyclictest4075-21kworker/u16:2+efi_rts_wq23:00:133
24747992910,290cyclictest17986-21kworker/u16:1+efi_rts_wq00:20:120
24747992900,289cyclictest2237-21kworker/u16:3+efi_rts_wq23:20:150
24750992890,288cyclictest4075-21kworker/u16:2+efi_rts_wq23:25:341
24752992880,287cyclictest27770-21kworker/u16:0+efi_rts_wq19:15:022
24750992840,283cyclictest18332-21kworker/u16:1+efi_rts_wq19:35:141
24747992820,281cyclictest25516-21kworker/u16:3+efi_rts_wq22:45:150
24754992810,280cyclictest17986-21kworker/u16:1+efi_rts_wq23:40:133
24750992810,280cyclictest20014-21kworker/u16:2+efi_rts_wq00:35:481
24750992800,279cyclictest4075-21kworker/u16:2+efi_rts_wq22:45:271
24750992800,279cyclictest17986-21kworker/u16:1+efi_rts_wq00:00:431
24754992790,278cyclictest27958-21kworker/u16:3+efi_rts_wq20:30:143
24752992790,278cyclictest4075-21kworker/u16:2+efi_rts_wq22:50:132
24752992790,277cyclictest25516-21kworker/u16:3+efi_rts_wq22:35:132
24747992790,278cyclictest21502-21kworker/u16:1+efi_rts_wq21:55:120
24754992770,276cyclictest25516-21kworker/u16:3+efi_rts_wq21:50:123
24754992760,275cyclictest17986-21kworker/u16:1+efi_rts_wq23:45:133
24750992760,275cyclictest4075-21kworker/u16:2+efi_rts_wq23:20:341
24750992760,275cyclictest27958-21kworker/u16:3+efi_rts_wq20:00:141
24750992760,275cyclictest27958-21kworker/u16:3+efi_rts_wq19:24:521
24754992750,274cyclictest27770-21kworker/u16:0+efi_rts_wq19:15:003
24750992740,272cyclictest17986-21kworker/u16:1+efi_rts_wq00:20:131
24747992710,270cyclictest4075-21kworker/u16:2+efi_rts_wq22:15:140
24754992700,269cyclictest26039-21kworker/u16:2+efi_rts_wq20:50:153
24750992700,269cyclictest25516-21kworker/u16:3+efi_rts_wq22:25:121
24754992680,267cyclictest21502-21kworker/u16:1+efi_rts_wq22:05:123
24747992680,267cyclictest27958-21kworker/u16:3+efi_rts_wq19:50:120
24752992670,266cyclictest20477-21kworker/u16:4+efi_rts_wq23:30:362
24754992660,265cyclictest32719-21kworker/u16:0+efi_rts_wq20:40:063
24752992620,261cyclictest25516-21kworker/u16:3+efi_rts_wq22:10:142
24750992620,261cyclictest25516-21kworker/u16:3+efi_rts_wq21:35:121
24752992610,260cyclictest27958-21kworker/u16:3+efi_rts_wq20:20:142
24750992610,259cyclictest25516-21kworker/u16:3+efi_rts_wq22:30:111
24752992590,258cyclictest4075-21kworker/u16:2+efi_rts_wq23:05:132
24752992590,258cyclictest18332-21kworker/u16:1+efi_rts_wq19:55:142
24754992580,257cyclictest26039-21kworker/u16:2+efi_rts_wq21:15:143
24754992580,257cyclictest18332-21kworker/u16:1+efi_rts_wq19:39:553
24752992570,256cyclictest32719-21kworker/u16:0+efi_rts_wq20:40:102
24754992550,254cyclictest20014-21kworker/u16:2+efi_rts_wq00:35:153
24754992540,253cyclictest25516-21kworker/u16:3+efi_rts_wq22:40:123
24750992530,252cyclictest18332-21kworker/u16:1+efi_rts_wq20:15:131
24750992510,250cyclictest17986-21kworker/u16:1+efi_rts_wq23:45:391
24747992490,248cyclictest17986-21kworker/u16:1+efi_rts_wq23:45:130
24750992480,247cyclictest4075-21kworker/u16:2+efi_rts_wq23:00:141
24752992460,245cyclictest31068-21kworker/u16:3+efi_rts_wq00:00:122
24747992430,242cyclictest25516-21kworker/u16:3+efi_rts_wq22:25:130
24754992410,240cyclictest25516-21kworker/u16:3+efi_rts_wq22:00:133
24747992410,240cyclictest2237-21kworker/u16:3+efi_rts_wq23:25:120
24752992380,237cyclictest31068-21kworker/u16:3+efi_rts_wq00:05:142
24750992380,237cyclictest27958-21kworker/u16:3+efi_rts_wq19:44:561
24754992370,236cyclictest18332-21kworker/u16:1+efi_rts_wq20:00:003
24752992370,236cyclictest21502-21kworker/u16:1+efi_rts_wq21:50:122
24747992370,236cyclictest27958-21kworker/u16:3+efi_rts_wq19:40:110
24750992350,234cyclictest26039-21kworker/u16:2+efi_rts_wq20:45:151
24752992340,233cyclictest26039-21kworker/u16:2+efi_rts_wq21:15:142
24750992340,233cyclictest27770-21kworker/u16:0+efi_rts_wq19:10:101
24747992340,233cyclictest27958-21kworker/u16:3+efi_rts_wq20:25:130
24754992330,232cyclictest27958-21kworker/u16:3+efi_rts_wq20:05:003
24754992330,232cyclictest17986-21kworker/u16:1+efi_rts_wq23:50:133
24754992300,229cyclictest32719-21kworker/u16:0+efi_rts_wq21:20:133
24752992300,229cyclictest4075-21kworker/u16:2+efi_rts_wq22:30:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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