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2026-03-23 - 16:13

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 Mon Mar 23, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304002334312,5sleep30-21swapper/319:09:453
300972320313,5sleep20-21swapper/219:05:512
302932318310,5sleep10-21swapper/119:08:231
303272316308,5sleep00-21swapper/019:08:510
30685993150,314cyclictest18390-21kworker/u16:3+efi_rts_wq23:30:130
30688993110,310cyclictest13255-21kworker/u16:2+efi_rts_wq20:50:133
30688993100,309cyclictest30260-21kworker/u16:3+efi_rts_wq20:55:133
30685993100,309cyclictest18390-21kworker/u16:3+efi_rts_wq23:20:020
30687993090,308cyclictest13255-21kworker/u16:2+efi_rts_wq21:05:142
30685993090,308cyclictest30260-21kworker/u16:3+efi_rts_wq21:00:130
30685993090,308cyclictest30260-21kworker/u16:3+efi_rts_wq20:45:120
30687993080,306cyclictest7074-21kworker/u16:1+efi_rts_wq23:00:132
30685993080,307cyclictest30260-21kworker/u16:3+efi_rts_wq20:35:120
30688993070,306cyclictest18390-21kworker/u16:3+efi_rts_wq23:35:123
30685993060,305cyclictest30260-21kworker/u16:3+efi_rts_wq20:15:130
30688993050,304cyclictest30260-21kworker/u16:3+efi_rts_wq19:15:143
30688993050,304cyclictest30260-21kworker/u16:3+efi_rts_wq19:15:133
30687993030,302cyclictest30260-21kworker/u16:3+efi_rts_wq20:35:132
30686993010,300cyclictest30260-21kworker/u16:3+efi_rts_wq21:10:121
30685993010,300cyclictest13255-21kworker/u16:2+efi_rts_wq22:05:120
30687993000,299cyclictest15353-21kworker/u16:1+efi_rts_wq00:35:152
30686993000,299cyclictest13255-21kworker/u16:2+efi_rts_wq19:40:131
30686993000,298cyclictest15353-21kworker/u16:1+efi_rts_wq23:15:111
30685993000,299cyclictest15353-21kworker/u16:1+efi_rts_wq23:35:130
30688992990,298cyclictest13255-21kworker/u16:2+efi_rts_wq21:40:143
30687992990,298cyclictest13255-21kworker/u16:2+efi_rts_wq22:35:112
30685992990,298cyclictest30260-21kworker/u16:3+efi_rts_wq21:25:120
30685992990,298cyclictest13255-21kworker/u16:2+efi_rts_wq22:50:120
30688992980,297cyclictest30260-21kworker/u16:3+efi_rts_wq22:15:123
30687992980,296cyclictest13255-21kworker/u16:2+efi_rts_wq22:40:142
30685992970,296cyclictest30260-21kworker/u16:3+efi_rts_wq19:30:130
30685992970,296cyclictest18390-21kworker/u16:3+efi_rts_wq23:40:120
30685992950,294cyclictest13255-21kworker/u16:2+efi_rts_wq22:10:140
30688992940,292cyclictest30260-21kworker/u16:3+efi_rts_wq21:35:113
30687992940,293cyclictest30260-21kworker/u16:3+efi_rts_wq21:30:142
30686992931,291cyclictest30260-21kworker/u16:3+efi_rts_wq22:30:121
30686992930,292cyclictest30260-21kworker/u16:3+efi_rts_wq21:49:481
30688992910,290cyclictest15353-21kworker/u16:1+efi_rts_wq00:05:103
30686992910,290cyclictest13255-21kworker/u16:2+efi_rts_wq21:05:141
30686992900,289cyclictest30260-21kworker/u16:3+efi_rts_wq20:30:141
30686992890,288cyclictest4252-21kworker/u16:0+efi_rts_wq22:55:101
30685992890,288cyclictest30260-21kworker/u16:3+efi_rts_wq21:45:130
30685992870,286cyclictest9856-21kworker/u16:2+efi_rts_wq23:05:130
30686992860,285cyclictest15353-21kworker/u16:1+efi_rts_wq23:10:021
30687992850,284cyclictest13255-21kworker/u16:2+efi_rts_wq19:50:132
30686992850,284cyclictest30260-21kworker/u16:3+efi_rts_wq20:55:121
30688992840,283cyclictest30260-21kworker/u16:3+efi_rts_wq22:00:133
30688992840,283cyclictest30260-21kworker/u16:3+efi_rts_wq21:50:143
30688992840,282cyclictest18390-21kworker/u16:3+efi_rts_wq00:01:153
30686992840,283cyclictest30260-21kworker/u16:3+efi_rts_wq20:15:131
30685992820,281cyclictest18390-21kworker/u16:3+efi_rts_wq00:21:180
30688992810,280cyclictest13255-21kworker/u16:2+efi_rts_wq20:25:153
30685992810,280cyclictest13255-21kworker/u16:2+efi_rts_wq19:20:150
30686992800,279cyclictest30260-21kworker/u16:3+efi_rts_wq22:09:511
30688992750,274cyclictest18390-21kworker/u16:3+efi_rts_wq00:16:173
30688992740,273cyclictest13255-21kworker/u16:2+efi_rts_wq20:20:123
30685992740,271cyclictest30260-21kworker/u16:3+efi_rts_wq19:10:150
30688992730,272cyclictest13255-21kworker/u16:2+efi_rts_wq21:55:143
30685992730,272cyclictest30260-21kworker/u16:3+efi_rts_wq21:24:450
30685992730,272cyclictest30260-21kworker/u16:3+efi_rts_wq21:19:430
30688992710,270cyclictest18390-21kworker/u16:3+efi_rts_wq00:20:133
30687992710,270cyclictest13255-21kworker/u16:2+efi_rts_wq22:34:562
30686992700,269cyclictest30260-21kworker/u16:3+efi_rts_wq19:55:121
30685992700,269cyclictest15353-21kworker/u16:1+efi_rts_wq23:55:140
30687992690,267cyclictest13255-21kworker/u16:2+efi_rts_wq22:45:122
30685992690,268cyclictest13255-21kworker/u16:2+efi_rts_wq22:49:580
30686992660,265cyclictest15353-21kworker/u16:1+efi_rts_wq00:30:121
30688992640,263cyclictest13255-21kworker/u16:2+efi_rts_wq19:35:143
30687992640,263cyclictest15353-21kworker/u16:1+efi_rts_wq23:45:132
30686992640,263cyclictest30260-21kworker/u16:3+efi_rts_wq21:15:111
30686992640,263cyclictest30260-21kworker/u16:3+efi_rts_wq20:49:381
30686992640,263cyclictest18390-21kworker/u16:3+efi_rts_wq00:36:221
30685992640,263cyclictest13255-21kworker/u16:2+efi_rts_wq19:40:130
30685992630,262cyclictest13255-21kworker/u16:2+efi_rts_wq20:00:140
30686992620,261cyclictest13255-21kworker/u16:2+efi_rts_wq20:10:131
30686992610,260cyclictest13255-21kworker/u16:2+efi_rts_wq22:40:141
30688992590,256cyclictest15353-21kworker/u16:1+efi_rts_wq00:35:143
30687992590,258cyclictest18390-21kworker/u16:3+efi_rts_wq00:15:112
30687992590,258cyclictest13255-21kworker/u16:2+efi_rts_wq20:25:142
30686992590,258cyclictest30260-21kworker/u16:3+efi_rts_wq21:30:141
30688992550,254cyclictest30260-21kworker/u16:3+efi_rts_wq19:45:143
30688992540,253cyclictest9856-21kworker/u16:2+efi_rts_wq23:05:133
30686992520,251cyclictest13255-21kworker/u16:2+efi_rts_wq22:39:551
30685992520,251cyclictest30260-21kworker/u16:3+efi_rts_wq19:59:280
30688992470,246cyclictest15353-21kworker/u16:1+efi_rts_wq00:10:123
30688992460,245cyclictest13255-21kworker/u16:2+efi_rts_wq22:20:133
30687992420,241cyclictest18390-21kworker/u16:3+efi_rts_wq23:50:132
30686992420,241cyclictest30260-21kworker/u16:3+efi_rts_wq20:40:131
30688992410,240cyclictest30260-21kworker/u16:3+efi_rts_wq21:45:143
30687992410,240cyclictest13255-21kworker/u16:2+efi_rts_wq22:19:532
30687992400,239cyclictest30260-21kworker/u16:3+efi_rts_wq20:34:372
30685992370,236cyclictest15353-21kworker/u16:1+efi_rts_wq00:26:200
30686992360,235cyclictest30260-21kworker/u16:3+efi_rts_wq20:05:131
30686992350,234cyclictest13255-21kworker/u16:2+efi_rts_wq22:24:541
30685992300,229cyclictest18390-21kworker/u16:3+efi_rts_wq00:00:130
30688992290,228cyclictest15353-21kworker/u16:1+efi_rts_wq23:10:123
30688992290,228cyclictest13255-21kworker/u16:2+efi_rts_wq20:00:133
30686992290,228cyclictest30260-21kworker/u16:3+efi_rts_wq19:19:231
30686992290,228cyclictest30260-21kworker/u16:3+efi_rts_wq19:19:221
30685992260,225cyclictest15353-21kworker/u16:1+efi_rts_wq00:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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