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2025-12-02 - 09:32

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 Dec 02, 2025 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292292317310,5sleep20-21swapper/219:05:282
293672316302,5sleep10-21swapper/119:07:151
294322315307,5sleep30-21swapper/319:08:053
292622315307,5sleep00-21swapper/019:05:540
29845993040,301cyclictest10877-21kworker/u16:3+efi_rts_wq21:25:151
29845993030,302cyclictest23595-21kworker/u16:3+efi_rts_wq19:20:131
29845993020,301cyclictest27507-21kworker/u16:4+efi_rts_wq21:40:151
29842993010,300cyclictest30679-21kworker/u16:3+efi_rts_wq20:30:150
29845992990,297cyclictest28561-21kworker/u16:2+efi_rts_wq21:05:141
29846992980,297cyclictest1344-21kworker/u16:1+efi_rts_wq23:10:132
29842992980,297cyclictest3832-21kworker/u16:3+efi_rts_wq23:56:240
29847992970,296cyclictest23595-21kworker/u16:3+efi_rts_wq19:30:113
29847992970,295cyclictest15377-21kworker/u16:1+efi_rts_wq21:20:133
29847992950,294cyclictest28561-21kworker/u16:2+efi_rts_wq20:25:153
29842992950,294cyclictest15377-21kworker/u16:1+efi_rts_wq21:30:490
29847992940,293cyclictest22308-21kworker/u16:1+efi_rts_wq00:00:133
29846992940,293cyclictest28561-21kworker/u16:2+efi_rts_wq20:25:152
29846992940,293cyclictest27507-21kworker/u16:4+efi_rts_wq21:40:162
29846992930,292cyclictest31367-21kworker/u16:2+efi_rts_wq19:45:152
29842992930,292cyclictest3832-21kworker/u16:3+efi_rts_wq00:36:320
29847992920,291cyclictest15377-21kworker/u16:1+efi_rts_wq21:45:143
29845992920,291cyclictest15377-21kworker/u16:1+efi_rts_wq21:45:131
29842992920,291cyclictest31952-21kworker/u16:0+efi_rts_wq21:55:150
29846992890,288cyclictest7538-21kworker/u16:1+efi_rts_wq22:21:012
29846992890,287cyclictest31952-21kworker/u16:0+efi_rts_wq22:35:152
29845992890,288cyclictest3832-21kworker/u16:3+efi_rts_wq23:10:131
29845992860,284cyclictest3832-21kworker/u16:3+efi_rts_wq23:15:141
29847992850,281cyclictest3832-21kworker/u16:3+efi_rts_wq00:05:123
29845992830,282cyclictest3832-21kworker/u16:3+efi_rts_wq00:35:141
29842992830,282cyclictest31952-21kworker/u16:0+efi_rts_wq22:36:070
29842992830,282cyclictest31367-21kworker/u16:2+efi_rts_wq19:25:150
29847992820,281cyclictest6331-21kworker/u16:0+efi_rts_wq20:35:243
29847992810,280cyclictest20840-21kworker/u16:2+efi_rts_wq23:06:133
29845992800,279cyclictest23595-21kworker/u16:3+efi_rts_wq20:05:181
29845992800,277cyclictest3832-21kworker/u16:3+efi_rts_wq23:40:141
29846992790,278cyclictest8738-21kworker/u16:2+efi_rts_wq23:20:132
29847992780,276cyclictest8738-21kworker/u16:2+efi_rts_wq23:50:123
29847992780,276cyclictest28561-21kworker/u16:2+efi_rts_wq20:55:163
29845992780,277cyclictest375-21kworker/u16:1+efi_rts_wq20:50:141
29845992780,276cyclictest8738-21kworker/u16:2+efi_rts_wq00:25:131
29846992770,276cyclictest3832-21kworker/u16:3+efi_rts_wq23:16:152
29846992760,275cyclictest6331-21kworker/u16:0+efi_rts_wq19:40:132
29845992760,275cyclictest3832-21kworker/u16:3+efi_rts_wq00:01:251
29847992740,273cyclictest13672-21kworker/u16:1+efi_rts_wq23:35:153
29846992740,273cyclictest3832-21kworker/u16:3+efi_rts_wq00:15:132
29847992730,272cyclictest23595-21kworker/u16:3+efi_rts_wq20:05:193
29847992720,271cyclictest22308-21kworker/u16:1+efi_rts_wq00:20:123
29842992720,271cyclictest3832-21kworker/u16:3+efi_rts_wq23:30:150
29847992700,269cyclictest31952-21kworker/u16:0+efi_rts_wq22:00:133
29846992700,269cyclictest31952-21kworker/u16:0+efi_rts_wq22:31:032
29846992700,269cyclictest23595-21kworker/u16:3+efi_rts_wq19:30:142
29845992700,269cyclictest6331-21kworker/u16:0+efi_rts_wq20:20:141
29846992690,268cyclictest30679-21kworker/u16:3+efi_rts_wq20:30:142
29846992690,268cyclictest15377-21kworker/u16:1+efi_rts_wq21:30:132
29845992690,267cyclictest20840-21kworker/u16:2+efi_rts_wq23:00:151
29845992680,266cyclictest8738-21kworker/u16:2+efi_rts_wq23:20:131
29845992670,265cyclictest3832-21kworker/u16:3+efi_rts_wq23:55:141
29845992670,263cyclictest31952-21kworker/u16:0+efi_rts_wq22:50:121
29847992650,264cyclictest6331-21kworker/u16:0+efi_rts_wq20:15:143
29842992640,263cyclictest31952-21kworker/u16:0+efi_rts_wq22:10:130
29847992630,262cyclictest7538-21kworker/u16:1+efi_rts_wq22:30:143
29842992630,262cyclictest6331-21kworker/u16:0+efi_rts_wq19:40:150
29842992630,261cyclictest3832-21kworker/u16:3+efi_rts_wq00:30:100
29845992620,261cyclictest23595-21kworker/u16:3+efi_rts_wq19:50:161
29847992610,260cyclictest8738-21kworker/u16:2+efi_rts_wq23:25:143
29845992610,260cyclictest31367-21kworker/u16:2+efi_rts_wq19:25:151
29845992610,260cyclictest23595-21kworker/u16:3+efi_rts_wq19:35:141
29842992610,260cyclictest375-21kworker/u16:1+efi_rts_wq20:50:140
29847992600,259cyclictest20840-21kworker/u16:2+efi_rts_wq23:00:143
29846992600,259cyclictest375-21kworker/u16:1+efi_rts_wq20:45:152
29847992590,258cyclictest23595-21kworker/u16:3+efi_rts_wq19:50:133
29847992580,257cyclictest10877-21kworker/u16:3+efi_rts_wq21:15:123
29842992570,256cyclictest2462-21kworker/u16:1+efi_rts_wq19:15:010
29842992570,256cyclictest19216-21kworker/u16:2+efi_rts_wq22:00:570
29846992550,254cyclictest15377-21kworker/u16:1+efi_rts_wq21:45:502
29842992550,254cyclictest10877-21kworker/u16:3+efi_rts_wq21:25:150
29847992540,253cyclictest13301-21kworker/u16:0+efi_rts_wq21:10:133
29846992530,252cyclictest31367-21kworker/u16:2+efi_rts_wq19:15:142
29845992500,249cyclictest31952-21kworker/u16:0+efi_rts_wq22:05:581
29847992490,247cyclictest23595-21kworker/u16:3+efi_rts_wq19:35:143
29845992490,248cyclictest31952-21kworker/u16:0+efi_rts_wq22:46:101
29842992470,246cyclictest31952-21kworker/u16:0+efi_rts_wq23:05:160
29847992460,245cyclictest27507-21kworker/u16:4+efi_rts_wq21:40:503
29846992460,245cyclictest31952-21kworker/u16:0+efi_rts_wq21:50:142
29846992440,242cyclictest20840-21kworker/u16:2+efi_rts_wq22:45:142
29845992430,242cyclictest31952-21kworker/u16:0+efi_rts_wq22:15:131
29845992430,242cyclictest31952-21kworker/u16:0+efi_rts_wq21:50:521
29845992430,242cyclictest17383-21kworker/u16:1+efi_rts_wq20:10:131
29846992420,241cyclictest27507-21kworker/u16:4+efi_rts_wq22:41:082
29845992420,241cyclictest3832-21kworker/u16:3+efi_rts_wq00:10:151
29845992410,240cyclictest10877-21kworker/u16:3+efi_rts_wq21:20:481
29842992400,239cyclictest6331-21kworker/u16:0+efi_rts_wq19:55:140
29842992380,237cyclictest27507-21kworker/u16:4+efi_rts_wq22:55:140
29845992370,236cyclictest15377-21kworker/u16:1+efi_rts_wq21:15:451
29845992360,235cyclictest8738-21kworker/u16:2+efi_rts_wq00:21:291
29842992360,235cyclictest15377-21kworker/u16:1+efi_rts_wq21:35:130
29846992350,234cyclictest23595-21kworker/u16:3+efi_rts_wq20:00:162
29846992350,234cyclictest23595-21kworker/u16:3+efi_rts_wq20:00:162
29847992340,233cyclictest375-21kworker/u16:1+efi_rts_wq20:45:153
29847992330,232cyclictest31952-21kworker/u16:0+efi_rts_wq21:55:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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