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2026-09-16 - 04:25

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 Wed Sep 16, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
47492318303,5sleep30-21swapper/319:06:593
48092317303,5sleep00-21swapper/019:07:440
48652315308,5sleep10-21swapper/119:08:291
46592314308,4sleep20-21swapper/219:05:502
5250993010,300cyclictest6136-21kworker/u16:0+efi_rts_wq23:10:130
5250993010,300cyclictest15924-21kworker/u16:2+efi_rts_wq23:55:130
5253992970,296cyclictest31092-21kworker/u16:1+efi_rts_wq21:45:133
5251992970,296cyclictest31092-21kworker/u16:1+efi_rts_wq22:25:111
5250992970,296cyclictest19095-21kworker/u16:0+efi_rts_wq21:25:140
5253992960,295cyclictest31092-21kworker/u16:1+efi_rts_wq20:50:123
5253992960,294cyclictest31609-21kworker/u16:3+efi_rts_wq23:20:113
5252992960,295cyclictest31092-21kworker/u16:1+efi_rts_wq19:59:062
5252992960,293cyclictest31092-21kworker/u16:1+efi_rts_wq21:50:122
5250992960,294cyclictest31609-21kworker/u16:3+efi_rts_wq23:00:110
5253992950,294cyclictest19095-21kworker/u16:0+efi_rts_wq22:40:123
5251992951,291cyclictest15924-21kworker/u16:2+efi_rts_wq00:35:121
5251992950,294cyclictest31609-21kworker/u16:3+efi_rts_wq22:50:121
5250992940,293cyclictest31092-21kworker/u16:1+efi_rts_wq22:30:130
5251992930,292cyclictest31092-21kworker/u16:1+efi_rts_wq19:35:121
5253992910,290cyclictest31092-21kworker/u16:1+efi_rts_wq19:15:153
5250992900,289cyclictest31092-21kworker/u16:1+efi_rts_wq20:45:130
5250992890,288cyclictest31092-21kworker/u16:1+efi_rts_wq21:00:170
5250992890,288cyclictest31092-21kworker/u16:1+efi_rts_wq19:35:110
5250992880,287cyclictest31092-21kworker/u16:1+efi_rts_wq20:00:140
5250992880,287cyclictest19095-21kworker/u16:0+efi_rts_wq22:20:110
5250992870,286cyclictest19095-21kworker/u16:0+efi_rts_wq22:15:120
5250992870,286cyclictest19095-21kworker/u16:0+efi_rts_wq19:45:120
5250992870,286cyclictest18376-21kworker/u16:1+efi_rts_wq00:00:140
5250992860,285cyclictest31092-21kworker/u16:1+efi_rts_wq19:20:130
5250992860,283cyclictest19095-21kworker/u16:0+efi_rts_wq20:25:140
5253992850,284cyclictest6136-21kworker/u16:0+efi_rts_wq23:04:393
5253992850,284cyclictest31092-21kworker/u16:1+efi_rts_wq20:00:133
5251992850,284cyclictest19095-21kworker/u16:0+efi_rts_wq20:20:151
5250992850,284cyclictest19095-21kworker/u16:0+efi_rts_wq21:34:210
5250992850,284cyclictest19095-21kworker/u16:0+efi_rts_wq21:34:200
5251992800,279cyclictest19095-21kworker/u16:0+efi_rts_wq21:05:121
5253992770,276cyclictest31092-21kworker/u16:1+efi_rts_wq19:39:023
5253992760,275cyclictest31092-21kworker/u16:1+efi_rts_wq20:49:153
5253992760,275cyclictest19095-21kworker/u16:0+efi_rts_wq21:29:193
5250992760,275cyclictest31092-21kworker/u16:1+efi_rts_wq20:15:120
5253992750,274cyclictest19095-21kworker/u16:0+efi_rts_wq22:45:143
5253992750,274cyclictest19095-21kworker/u16:0+efi_rts_wq20:20:143
5251992750,274cyclictest18376-21kworker/u16:1+efi_rts_wq23:45:121
5253992720,271cyclictest31092-21kworker/u16:1+efi_rts_wq19:55:153
5253992710,270cyclictest15924-21kworker/u16:2+efi_rts_wq23:50:123
5251992710,270cyclictest31092-21kworker/u16:1+efi_rts_wq20:45:131
5253992700,269cyclictest31092-21kworker/u16:1+efi_rts_wq21:35:163
5251992690,268cyclictest18376-21kworker/u16:1+efi_rts_wq00:34:571
5252992680,267cyclictest19095-21kworker/u16:0+efi_rts_wq21:15:132
5252992680,267cyclictest15924-21kworker/u16:2+efi_rts_wq00:10:122
5251992680,267cyclictest6136-21kworker/u16:0+efi_rts_wq23:15:131
5250992680,267cyclictest31092-21kworker/u16:1+efi_rts_wq19:50:140
5250992680,267cyclictest15924-21kworker/u16:2+efi_rts_wq00:29:560
5252992670,266cyclictest19095-21kworker/u16:0+efi_rts_wq20:30:142
5250992660,265cyclictest31092-21kworker/u16:1+efi_rts_wq21:19:180
5253992650,264cyclictest19095-21kworker/u16:0+efi_rts_wq22:15:133
5250992640,263cyclictest18376-21kworker/u16:1+efi_rts_wq23:30:130
5252992630,262cyclictest19095-21kworker/u16:0+efi_rts_wq21:09:172
5253992620,261cyclictest19095-21kworker/u16:0+efi_rts_wq20:19:103
5253992620,261cyclictest18376-21kworker/u16:1+efi_rts_wq23:25:143
5250992610,259cyclictest19095-21kworker/u16:0+efi_rts_wq22:45:130
5251992600,259cyclictest31092-21kworker/u16:1+efi_rts_wq19:54:051
5250992600,259cyclictest19095-21kworker/u16:0+efi_rts_wq21:14:190
5250992590,258cyclictest31092-21kworker/u16:1+efi_rts_wq20:24:120
5253992580,257cyclictest31092-21kworker/u16:1+efi_rts_wq22:35:123
5252992580,256cyclictest19095-21kworker/u16:0+efi_rts_wq22:39:352
5253992571,254cyclictest31609-21kworker/u16:3+efi_rts_wq23:19:433
5252992570,256cyclictest18376-21kworker/u16:1+efi_rts_wq23:54:492
5253992550,254cyclictest19095-21kworker/u16:0+efi_rts_wq20:39:143
5253992520,251cyclictest31609-21kworker/u16:3+efi_rts_wq22:55:173
5251992520,251cyclictest19095-21kworker/u16:0+efi_rts_wq21:30:141
5251992520,251cyclictest19095-21kworker/u16:0+efi_rts_wq21:30:131
5251992510,250cyclictest19095-21kworker/u16:0+efi_rts_wq21:54:241
5251992500,249cyclictest31092-21kworker/u16:1+efi_rts_wq20:40:141
5253992480,247cyclictest15924-21kworker/u16:2+efi_rts_wq00:15:123
5251992480,247cyclictest15924-21kworker/u16:2+efi_rts_wq00:25:121
5253992440,243cyclictest19095-21kworker/u16:0+efi_rts_wq21:40:133
5251992430,242cyclictest15924-21kworker/u16:2+efi_rts_wq00:19:531
5251992420,241cyclictest15924-21kworker/u16:2+efi_rts_wq23:39:451
5253992410,240cyclictest15924-21kworker/u16:2+efi_rts_wq00:20:133
5252992410,240cyclictest31609-21kworker/u16:3+efi_rts_wq23:20:122
5251992400,239cyclictest19095-21kworker/u16:0+efi_rts_wq22:40:131
5252992390,238cyclictest15924-21kworker/u16:2+efi_rts_wq00:15:122
5252992380,237cyclictest19095-21kworker/u16:0+efi_rts_wq19:44:022
5251992380,237cyclictest31092-21kworker/u16:1+efi_rts_wq20:59:161
5250992370,236cyclictest19095-21kworker/u16:0+efi_rts_wq22:29:320
5253992360,235cyclictest31092-21kworker/u16:1+efi_rts_wq22:10:133
5251992360,235cyclictest31092-21kworker/u16:1+efi_rts_wq21:10:131
5251992350,234cyclictest31092-21kworker/u16:1+efi_rts_wq21:04:171
5251992350,234cyclictest19095-21kworker/u16:0+efi_rts_wq21:24:191
5250992350,234cyclictest31092-21kworker/u16:1+efi_rts_wq20:50:130
5252992330,232cyclictest31092-21kworker/u16:1+efi_rts_wq19:50:132
5251992330,232cyclictest18376-21kworker/u16:1+efi_rts_wq23:34:461
5253992320,231cyclictest31092-21kworker/u16:1+efi_rts_wq21:50:123
5250992300,229cyclictest31092-21kworker/u16:1+efi_rts_wq21:49:230
5251992260,225cyclictest19095-21kworker/u16:0+efi_rts_wq22:20:111
5250992260,225cyclictest31092-21kworker/u16:1+efi_rts_wq19:30:140
5253992250,224cyclictest31092-21kworker/u16:1+efi_rts_wq20:10:143
5251992240,223cyclictest31092-21kworker/u16:1+efi_rts_wq19:30:121
5253992220,221cyclictest31092-21kworker/u16:1+efi_rts_wq19:29:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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