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2026-08-16 - 05:09

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 Aug 16, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26782331303,25sleep00-21swapper/019:06:080
25092325303,19sleep10-21swapper/119:05:211
28632318303,5sleep30-21swapper/319:08:303
26502317304,4sleep20-21swapper/219:05:452
3249992990,298cyclictest9819-21kworker/u16:0+efi_rts_wq21:35:143
3249992990,298cyclictest9819-21kworker/u16:0+efi_rts_wq21:35:143
3246992990,298cyclictest12463-21kworker/u16:2+efi_rts_wq00:25:360
3246992980,297cyclictest32464-21kworker/u16:3+efi_rts_wq19:50:130
3249992970,296cyclictest12463-21kworker/u16:2+efi_rts_wq00:00:323
3246992960,295cyclictest9819-21kworker/u16:0+efi_rts_wq21:30:130
3246992960,295cyclictest32464-21kworker/u16:3+efi_rts_wq19:25:120
3249992950,294cyclictest9819-21kworker/u16:0+efi_rts_wq23:10:233
3248992950,294cyclictest12463-21kworker/u16:2+efi_rts_wq23:55:132
3247992950,294cyclictest14975-21kworker/u16:3+efi_rts_wq23:30:131
3246992940,293cyclictest14975-21kworker/u16:3+efi_rts_wq00:30:140
3248992920,291cyclictest26908-21kworker/u16:1+efi_rts_wq19:35:142
3248992910,290cyclictest9819-21kworker/u16:0+efi_rts_wq21:40:112
3247992910,290cyclictest22012-21kworker/u16:2+efi_rts_wq20:50:111
3249992900,289cyclictest12463-21kworker/u16:2+efi_rts_wq00:10:153
3249992890,288cyclictest9819-21kworker/u16:0+efi_rts_wq21:30:123
3246992880,287cyclictest26908-21kworker/u16:1+efi_rts_wq19:15:140
3249992870,286cyclictest22012-21kworker/u16:2+efi_rts_wq20:45:163
3249992870,286cyclictest22012-21kworker/u16:2+efi_rts_wq20:29:533
3246992860,285cyclictest22012-21kworker/u16:2+efi_rts_wq22:45:180
3249992850,284cyclictest22012-21kworker/u16:2+efi_rts_wq21:00:133
3248992850,284cyclictest32464-21kworker/u16:3+efi_rts_wq19:45:142
3248992850,284cyclictest26908-21kworker/u16:1+efi_rts_wq19:30:142
3248992840,283cyclictest32464-21kworker/u16:3+efi_rts_wq19:40:132
3248992840,281cyclictest22012-21kworker/u16:2+efi_rts_wq22:15:142
3246992830,282cyclictest22012-21kworker/u16:2+efi_rts_wq21:05:000
3246992820,281cyclictest9819-21kworker/u16:0+efi_rts_wq22:35:170
3246992820,281cyclictest22012-21kworker/u16:2+efi_rts_wq21:45:080
3248992810,278cyclictest9819-21kworker/u16:0+efi_rts_wq21:10:132
3247992810,280cyclictest22012-21kworker/u16:2+efi_rts_wq21:05:121
3248992800,279cyclictest22012-21kworker/u16:2+efi_rts_wq20:15:142
3249992790,278cyclictest9819-21kworker/u16:0+efi_rts_wq20:59:593
3249992780,276cyclictest9819-21kworker/u16:0+efi_rts_wq21:40:113
3247992780,277cyclictest14975-21kworker/u16:3+efi_rts_wq23:45:291
3247992770,276cyclictest9819-21kworker/u16:0+efi_rts_wq20:20:111
3247992770,276cyclictest22012-21kworker/u16:2+efi_rts_wq21:15:121
3246992770,274cyclictest9819-21kworker/u16:0+efi_rts_wq22:25:120
3249992760,275cyclictest9819-21kworker/u16:0+efi_rts_wq22:05:123
3249992760,275cyclictest26908-21kworker/u16:1+efi_rts_wq19:15:013
3249992760,275cyclictest12463-21kworker/u16:2+efi_rts_wq23:40:293
3247992710,270cyclictest9819-21kworker/u16:0+efi_rts_wq22:00:161
3247992700,269cyclictest9819-21kworker/u16:0+efi_rts_wq22:25:121
3247992700,269cyclictest26908-21kworker/u16:1+efi_rts_wq19:30:141
3247992700,269cyclictest12463-21kworker/u16:2+efi_rts_wq00:00:151
3246992700,269cyclictest9819-21kworker/u16:0+efi_rts_wq20:55:110
3247992690,268cyclictest22012-21kworker/u16:2+efi_rts_wq21:30:051
3247992680,267cyclictest9819-21kworker/u16:0+efi_rts_wq21:50:121
3247992680,267cyclictest12463-21kworker/u16:2+efi_rts_wq23:25:121
3249992660,265cyclictest14975-21kworker/u16:3+efi_rts_wq23:25:273
3249992660,265cyclictest12463-21kworker/u16:2+efi_rts_wq00:25:113
3246992660,265cyclictest22012-21kworker/u16:2+efi_rts_wq20:50:120
3248992650,264cyclictest14975-21kworker/u16:3+efi_rts_wq23:45:122
3249992640,263cyclictest9819-21kworker/u16:0+efi_rts_wq20:24:513
3248992640,263cyclictest9819-21kworker/u16:0+efi_rts_wq21:20:132
3247992640,263cyclictest25036-21kworker/u16:3+efi_rts_wq22:55:201
3248992630,262cyclictest9819-21kworker/u16:0+efi_rts_wq22:05:132
3249992620,261cyclictest22012-21kworker/u16:2+efi_rts_wq21:55:123
3248992610,260cyclictest32622-21kworker/u16:1+efi_rts_wq22:50:192
3248992610,260cyclictest14975-21kworker/u16:3+efi_rts_wq00:20:362
3249992600,259cyclictest9819-21kworker/u16:0+efi_rts_wq22:25:163
3247992590,258cyclictest22012-21kworker/u16:2+efi_rts_wq22:10:131
3248992580,257cyclictest22012-21kworker/u16:2+efi_rts_wq22:45:142
3247992530,252cyclictest32464-21kworker/u16:3+efi_rts_wq19:20:131
3248992510,250cyclictest22012-21kworker/u16:2+efi_rts_wq21:35:062
3248992510,250cyclictest22012-21kworker/u16:2+efi_rts_wq21:35:062
3246992510,250cyclictest9819-21kworker/u16:0+efi_rts_wq22:10:120
3246992510,249cyclictest25036-21kworker/u16:3+efi_rts_wq22:55:140
3248992500,249cyclictest12463-21kworker/u16:2+efi_rts_wq00:15:132
3247992500,249cyclictest9819-21kworker/u16:0+efi_rts_wq22:35:141
3246992500,249cyclictest26908-21kworker/u16:1+efi_rts_wq19:35:140
3249992490,248cyclictest32464-21kworker/u16:3+efi_rts_wq19:44:433
3249992480,247cyclictest12463-21kworker/u16:2+efi_rts_wq23:20:133
3247992460,245cyclictest12463-21kworker/u16:2+efi_rts_wq00:10:341
3246992440,243cyclictest22012-21kworker/u16:2+efi_rts_wq20:35:140
3247992420,241cyclictest26908-21kworker/u16:1+efi_rts_wq19:19:401
3246992420,241cyclictest9819-21kworker/u16:0+efi_rts_wq19:59:460
3248992410,239cyclictest12463-21kworker/u16:2+efi_rts_wq23:50:132
3248992390,238cyclictest9819-21kworker/u16:0+efi_rts_wq20:40:112
3246992380,237cyclictest12463-21kworker/u16:2+efi_rts_wq00:35:120
3248992370,234cyclictest22012-21kworker/u16:2+efi_rts_wq20:05:132
3249992360,235cyclictest9819-21kworker/u16:0+efi_rts_wq20:10:123
3247992360,235cyclictest32464-21kworker/u16:3+efi_rts_wq19:45:141
3249992350,234cyclictest22012-21kworker/u16:2+efi_rts_wq22:20:133
3248992350,234cyclictest12463-21kworker/u16:2+efi_rts_wq00:25:112
3246992350,233cyclictest22012-21kworker/u16:2+efi_rts_wq22:30:120
3246992330,232cyclictest22012-21kworker/u16:2+efi_rts_wq20:05:120
3247992320,231cyclictest22012-21kworker/u16:2+efi_rts_wq20:09:491
3247992320,231cyclictest12463-21kworker/u16:2+efi_rts_wq00:35:121
3246992320,231cyclictest12463-21kworker/u16:2+efi_rts_wq23:50:310
3249992310,230cyclictest32622-21kworker/u16:1+efi_rts_wq23:00:103
3247992310,230cyclictest26908-21kworker/u16:1+efi_rts_wq19:10:131
3246992290,228cyclictest14975-21kworker/u16:3+efi_rts_wq23:30:140
3248992280,227cyclictest9819-21kworker/u16:0+efi_rts_wq23:10:122
3247992280,227cyclictest9819-21kworker/u16:0+efi_rts_wq21:25:031
3249992270,225cyclictest22012-21kworker/u16:2+efi_rts_wq22:30:123
3247992270,226cyclictest9819-21kworker/u16:0+efi_rts_wq19:55:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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