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2026-06-28 - 13:18

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 Sun Jun 28, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94952337311,24sleep00-21swapper/019:08:120
92952319305,4sleep20-21swapper/219:05:372
96332317311,4sleep10-21swapper/119:09:571
93782317309,5sleep30-21swapper/319:06:423
9900993020,301cyclictest17201-21kworker/u16:2+efi_rts_wq20:45:130
9901992990,298cyclictest21026-21kworker/u16:3+efi_rts_wq23:55:121
9901992990,298cyclictest21026-21kworker/u16:3+efi_rts_wq23:35:141
9901992990,297cyclictest30980-21kworker/u16:0+efi_rts_wq19:55:131
9902992980,297cyclictest30980-21kworker/u16:0+efi_rts_wq19:44:462
9900992980,297cyclictest17201-21kworker/u16:2+efi_rts_wq22:45:190
9902992970,296cyclictest21026-21kworker/u16:3+efi_rts_wq00:05:142
9900992970,295cyclictest23316-21kworker/u16:1+efi_rts_wq00:10:150
9903992950,294cyclictest17201-21kworker/u16:2+efi_rts_wq20:24:543
9902992950,294cyclictest30980-21kworker/u16:0+efi_rts_wq19:20:122
9903992920,291cyclictest30980-21kworker/u16:0+efi_rts_wq21:00:123
9903992920,291cyclictest17201-21kworker/u16:2+efi_rts_wq21:55:133
9902992920,291cyclictest30980-21kworker/u16:0+efi_rts_wq19:25:132
9902992920,291cyclictest17201-21kworker/u16:2+efi_rts_wq20:25:122
9900992920,291cyclictest23316-21kworker/u16:1+efi_rts_wq00:15:140
9902992910,288cyclictest30980-21kworker/u16:0+efi_rts_wq20:05:132
9903992900,289cyclictest17201-21kworker/u16:2+efi_rts_wq20:25:123
9901992900,289cyclictest21026-21kworker/u16:3+efi_rts_wq00:00:141
9903992890,288cyclictest30980-21kworker/u16:0+efi_rts_wq22:15:113
9903992880,287cyclictest30980-21kworker/u16:0+efi_rts_wq22:05:143
9902992880,287cyclictest17201-21kworker/u16:2+efi_rts_wq21:15:132
9901992880,287cyclictest30980-21kworker/u16:0+efi_rts_wq20:10:111
9900992880,287cyclictest3463-21kworker/u16:3+efi_rts_wq23:00:130
9902992860,285cyclictest17201-21kworker/u16:2+efi_rts_wq23:15:112
9901992850,283cyclictest17201-21kworker/u16:2+efi_rts_wq23:20:241
9900992850,284cyclictest30980-21kworker/u16:0+efi_rts_wq21:55:100
9903992840,283cyclictest21026-21kworker/u16:3+efi_rts_wq00:25:143
9902992840,283cyclictest17201-21kworker/u16:2+efi_rts_wq23:20:122
9900992840,283cyclictest17201-21kworker/u16:2+efi_rts_wq23:20:120
9903992830,282cyclictest17201-21kworker/u16:2+efi_rts_wq21:20:143
9903992820,281cyclictest30980-21kworker/u16:0+efi_rts_wq20:15:123
9901992820,279cyclictest17201-21kworker/u16:2+efi_rts_wq20:45:131
9900992820,281cyclictest30980-21kworker/u16:0+efi_rts_wq22:00:120
9903992800,279cyclictest30980-21kworker/u16:0+efi_rts_wq21:35:133
9900992790,278cyclictest17201-21kworker/u16:2+efi_rts_wq20:40:130
9901992780,277cyclictest30980-21kworker/u16:0+efi_rts_wq22:00:121
9900992780,277cyclictest17201-21kworker/u16:2+efi_rts_wq20:50:110
9901992760,275cyclictest30980-21kworker/u16:0+efi_rts_wq19:50:121
9900992750,274cyclictest17201-21kworker/u16:2+efi_rts_wq19:35:130
9900992730,272cyclictest30980-21kworker/u16:0+efi_rts_wq20:30:130
9903992720,270cyclictest23316-21kworker/u16:1+efi_rts_wq23:30:133
9900992720,271cyclictest17201-21kworker/u16:2+efi_rts_wq21:20:140
9902992710,270cyclictest3463-21kworker/u16:3+efi_rts_wq23:05:122
9900992700,269cyclictest21026-21kworker/u16:3+efi_rts_wq00:20:140
9900992700,269cyclictest17201-21kworker/u16:2+efi_rts_wq22:55:140
9903992690,268cyclictest17201-21kworker/u16:2+efi_rts_wq22:35:133
9902992690,268cyclictest23316-21kworker/u16:1+efi_rts_wq23:30:122
9902992680,267cyclictest30980-21kworker/u16:0+efi_rts_wq21:50:092
9900992680,267cyclictest23316-21kworker/u16:1+efi_rts_wq00:30:140
9903992670,265cyclictest17201-21kworker/u16:2+efi_rts_wq22:55:143
9902992670,266cyclictest17201-21kworker/u16:2+efi_rts_wq21:05:142
9902992670,266cyclictest17201-21kworker/u16:2+efi_rts_wq21:05:132
9901992670,266cyclictest17201-21kworker/u16:2+efi_rts_wq20:34:551
9900992650,264cyclictest30980-21kworker/u16:0+efi_rts_wq21:40:080
9902992640,263cyclictest17201-21kworker/u16:2+efi_rts_wq20:54:582
9900992640,263cyclictest23316-21kworker/u16:1+efi_rts_wq00:05:330
9903992630,262cyclictest30980-21kworker/u16:0+efi_rts_wq19:30:113
9900992620,261cyclictest17201-21kworker/u16:2+efi_rts_wq20:55:130
9901992610,260cyclictest17201-21kworker/u16:2+efi_rts_wq20:19:531
9902992590,258cyclictest30980-21kworker/u16:0+efi_rts_wq20:44:562
9902992570,254cyclictest30980-21kworker/u16:0+efi_rts_wq20:00:102
9900992570,255cyclictest3463-21kworker/u16:3+efi_rts_wq22:50:140
9901992550,254cyclictest23316-21kworker/u16:1+efi_rts_wq23:25:131
9903992540,253cyclictest23316-21kworker/u16:1+efi_rts_wq00:15:143
9903992540,253cyclictest21026-21kworker/u16:3+efi_rts_wq23:45:143
9903992530,252cyclictest17201-21kworker/u16:2+efi_rts_wq22:30:113
9901992530,252cyclictest21026-21kworker/u16:3+efi_rts_wq00:20:131
9900992530,252cyclictest30980-21kworker/u16:0+efi_rts_wq19:25:130
9901992510,250cyclictest23316-21kworker/u16:1+efi_rts_wq23:30:251
9900992510,250cyclictest30980-21kworker/u16:0+efi_rts_wq20:39:560
9903992470,246cyclictest21026-21kworker/u16:3+efi_rts_wq23:40:283
9901992470,246cyclictest17201-21kworker/u16:2+efi_rts_wq21:10:021
9900992460,245cyclictest30980-21kworker/u16:0+efi_rts_wq20:05:130
9900992460,245cyclictest21026-21kworker/u16:3+efi_rts_wq00:00:320
9902992440,243cyclictest17201-21kworker/u16:2+efi_rts_wq22:40:132
9902992440,243cyclictest17201-21kworker/u16:2+efi_rts_wq19:15:142
9902992420,240cyclictest23316-21kworker/u16:1+efi_rts_wq23:40:122
9900992420,241cyclictest17201-21kworker/u16:2+efi_rts_wq21:35:070
9902992360,234cyclictest3463-21kworker/u16:3+efi_rts_wq23:00:132
9903992350,234cyclictest17201-21kworker/u16:2+efi_rts_wq19:24:433
9901992350,234cyclictest17201-21kworker/u16:2+efi_rts_wq21:30:111
9903992330,232cyclictest17201-21kworker/u16:2+efi_rts_wq20:35:123
9901992270,226cyclictest17201-21kworker/u16:2+efi_rts_wq22:15:141
9900992260,224cyclictest30980-21kworker/u16:0+efi_rts_wq19:10:150
9901992250,224cyclictest3463-21kworker/u16:3+efi_rts_wq23:00:211
9903992240,223cyclictest17201-21kworker/u16:2+efi_rts_wq22:00:113
9901992240,223cyclictest17201-21kworker/u16:2+efi_rts_wq19:15:011
9903992230,222cyclictest21026-21kworker/u16:3+efi_rts_wq23:25:243
9901992230,222cyclictest30980-21kworker/u16:0+efi_rts_wq19:10:151
9903992200,219cyclictest30980-21kworker/u16:0+efi_rts_wq22:25:133
9901992190,218cyclictest17201-21kworker/u16:2+efi_rts_wq21:55:131
9901992190,218cyclictest17201-21kworker/u16:2+efi_rts_wq21:50:131
9900992190,218cyclictest30980-21kworker/u16:0+efi_rts_wq21:45:120
9903992160,215cyclictest30980-21kworker/u16:0+efi_rts_wq21:40:133
9901992160,215cyclictest30980-21kworker/u16:0+efi_rts_wq21:25:131
9901992150,214cyclictest23316-21kworker/u16:1+efi_rts_wq00:30:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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