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2026-08-23 - 09:22

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 23, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150642333311,5sleep00-21swapper/019:08:320
151122317309,5sleep10-21swapper/119:09:091
149782316310,4sleep30-21swapper/319:07:263
150042315308,5sleep20-21swapper/219:07:462
15445993020,299cyclictest30881-21kworker/u16:1+efi_rts_wq22:55:140
15448993010,300cyclictest753-21kworker/u16:1+efi_rts_wq00:35:373
15445992990,298cyclictest753-21kworker/u16:1+efi_rts_wq00:05:140
15448992980,297cyclictest3065-21kworker/u16:2+efi_rts_wq23:40:133
15447992970,296cyclictest19292-21kworker/u16:3+efi_rts_wq23:35:252
15446992940,293cyclictest30881-21kworker/u16:1+efi_rts_wq21:04:581
15447992930,292cyclictest30881-21kworker/u16:1+efi_rts_wq21:40:122
15447992930,292cyclictest3065-21kworker/u16:2+efi_rts_wq23:55:112
15447992930,292cyclictest11286-21kworker/u16:3+efi_rts_wq19:20:122
15445992930,291cyclictest3065-21kworker/u16:2+efi_rts_wq00:00:140
15448992920,291cyclictest30881-21kworker/u16:1+efi_rts_wq19:19:393
15445992920,291cyclictest30881-21kworker/u16:1+efi_rts_wq19:55:120
15448992910,290cyclictest11286-21kworker/u16:3+efi_rts_wq22:30:133
15446992910,290cyclictest3065-21kworker/u16:2+efi_rts_wq00:00:141
15447992900,289cyclictest30881-21kworker/u16:1+efi_rts_wq19:15:142
15446992880,287cyclictest11286-21kworker/u16:3+efi_rts_wq22:10:121
15445992880,287cyclictest11286-21kworker/u16:3+efi_rts_wq20:40:140
15448992870,286cyclictest753-21kworker/u16:1+efi_rts_wq00:05:143
15448992860,285cyclictest30881-21kworker/u16:1+efi_rts_wq20:05:143
15448992860,285cyclictest11286-21kworker/u16:3+efi_rts_wq21:35:133
15448992850,284cyclictest11726-21kworker/u16:0+efi_rts_wq23:35:113
15447992850,284cyclictest753-21kworker/u16:1+efi_rts_wq00:15:132
15445992850,284cyclictest11726-21kworker/u16:0+efi_rts_wq23:30:120
15446992830,282cyclictest5111-21kworker/u16:2+efi_rts_wq22:40:161
15446992830,282cyclictest30881-21kworker/u16:1+efi_rts_wq21:50:111
15446992830,282cyclictest11726-21kworker/u16:0+efi_rts_wq23:25:121
15447992820,281cyclictest11726-21kworker/u16:0+efi_rts_wq23:15:212
15445992820,281cyclictest3065-21kworker/u16:2+efi_rts_wq00:30:130
15448992810,280cyclictest11286-21kworker/u16:3+efi_rts_wq22:20:133
15448992790,278cyclictest11286-21kworker/u16:3+efi_rts_wq21:09:593
15448992770,276cyclictest30881-21kworker/u16:1+efi_rts_wq21:00:143
15447992770,276cyclictest11286-21kworker/u16:3+efi_rts_wq20:19:512
15448992760,275cyclictest30881-21kworker/u16:1+efi_rts_wq19:25:133
15448992750,274cyclictest11286-21kworker/u16:3+efi_rts_wq19:24:393
15446992740,273cyclictest753-21kworker/u16:1+efi_rts_wq00:25:351
15445992740,272cyclictest30881-21kworker/u16:1+efi_rts_wq22:50:160
15446992720,271cyclictest753-21kworker/u16:1+efi_rts_wq23:55:291
15445992710,270cyclictest30881-21kworker/u16:1+efi_rts_wq21:55:070
15448992700,269cyclictest11286-21kworker/u16:3+efi_rts_wq22:35:133
15445992700,269cyclictest11286-21kworker/u16:3+efi_rts_wq19:35:140
15448992690,268cyclictest30881-21kworker/u16:1+efi_rts_wq21:15:133
15448992690,268cyclictest30881-21kworker/u16:1+efi_rts_wq20:50:123
15447992690,268cyclictest11286-21kworker/u16:3+efi_rts_wq21:55:122
15445992670,266cyclictest30881-21kworker/u16:1+efi_rts_wq22:25:130
15445992670,265cyclictest30881-21kworker/u16:1+efi_rts_wq23:05:150
15446992650,264cyclictest11286-21kworker/u16:3+efi_rts_wq20:30:121
15447992640,263cyclictest753-21kworker/u16:1+efi_rts_wq00:25:122
15445992640,263cyclictest753-21kworker/u16:1+efi_rts_wq23:50:130
15448992630,262cyclictest11286-21kworker/u16:3+efi_rts_wq22:40:143
15446992630,262cyclictest30881-21kworker/u16:1+efi_rts_wq22:30:131
15446992630,260cyclictest30881-21kworker/u16:1+efi_rts_wq20:35:131
15445992630,262cyclictest30881-21kworker/u16:1+efi_rts_wq22:00:120
15448992600,259cyclictest3065-21kworker/u16:2+efi_rts_wq00:10:333
15448992600,259cyclictest11726-21kworker/u16:0+efi_rts_wq23:20:133
15446992600,259cyclictest30881-21kworker/u16:1+efi_rts_wq21:25:121
15446992600,259cyclictest30881-21kworker/u16:1+efi_rts_wq21:25:121
15448992590,258cyclictest30881-21kworker/u16:1+efi_rts_wq19:34:423
15445992580,257cyclictest11286-21kworker/u16:3+efi_rts_wq21:30:130
15447992570,256cyclictest11286-21kworker/u16:3+efi_rts_wq20:10:122
15448992560,255cyclictest19292-21kworker/u16:3+efi_rts_wq23:25:233
15445992540,253cyclictest30881-21kworker/u16:1+efi_rts_wq22:15:130
15447992530,252cyclictest11286-21kworker/u16:3+efi_rts_wq19:30:132
15447992520,251cyclictest11286-21kworker/u16:3+efi_rts_wq21:05:142
15446992520,251cyclictest11286-21kworker/u16:3+efi_rts_wq19:45:131
15447992510,248cyclictest11726-21kworker/u16:0+efi_rts_wq23:00:182
15446992510,250cyclictest3065-21kworker/u16:2+efi_rts_wq00:20:141
15445992490,248cyclictest11286-21kworker/u16:3+efi_rts_wq21:45:120
15445992470,246cyclictest30881-21kworker/u16:1+efi_rts_wq20:14:500
15447992460,245cyclictest30881-21kworker/u16:1+efi_rts_wq22:15:132
15446992460,245cyclictest30881-21kworker/u16:1+efi_rts_wq21:40:111
15448992450,244cyclictest753-21kworker/u16:1+efi_rts_wq23:50:133
15446992440,243cyclictest30881-21kworker/u16:1+efi_rts_wq19:10:131
15445992440,243cyclictest11286-21kworker/u16:3+efi_rts_wq21:20:140
15446992410,240cyclictest753-21kworker/u16:1+efi_rts_wq00:35:131
15445992400,239cyclictest30881-21kworker/u16:1+efi_rts_wq21:10:140
15446992370,236cyclictest753-21kworker/u16:1+efi_rts_wq23:45:131
15445992370,236cyclictest11286-21kworker/u16:3+efi_rts_wq20:15:130
15445992360,235cyclictest11286-21kworker/u16:3+efi_rts_wq20:20:120
15446992350,234cyclictest30881-21kworker/u16:1+efi_rts_wq20:25:131
15445992340,233cyclictest11286-21kworker/u16:3+efi_rts_wq20:04:480
15446992310,230cyclictest30881-21kworker/u16:1+efi_rts_wq19:15:131
15445992300,227cyclictest753-21kworker/u16:1+efi_rts_wq00:15:130
15446992290,228cyclictest30881-21kworker/u16:1+efi_rts_wq21:45:051
15446992290,228cyclictest11286-21kworker/u16:3+efi_rts_wq20:20:131
15445992290,227cyclictest19292-21kworker/u16:3+efi_rts_wq23:15:120
15448992280,227cyclictest30881-21kworker/u16:1+efi_rts_wq21:50:123
15447992270,226cyclictest3065-21kworker/u16:2+efi_rts_wq23:40:132
15447992270,225cyclictest19292-21kworker/u16:3+efi_rts_wq23:10:122
15447992260,225cyclictest753-21kworker/u16:1+efi_rts_wq23:50:132
15445992240,223cyclictest11286-21kworker/u16:3+efi_rts_wq20:49:560
15448992230,222cyclictest11286-21kworker/u16:3+efi_rts_wq21:25:013
15448992230,222cyclictest11286-21kworker/u16:3+efi_rts_wq21:25:013
15446992230,222cyclictest30881-21kworker/u16:1+efi_rts_wq20:54:561
15445992220,221cyclictest3065-21kworker/u16:2+efi_rts_wq00:10:140
15445992220,221cyclictest11726-21kworker/u16:0+efi_rts_wq23:00:120
15445992210,220cyclictest11286-21kworker/u16:3+efi_rts_wq20:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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