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2026-04-19 - 14:54

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 Apr 19, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139362338311,24sleep00-21swapper/019:07:000
137482329314,5sleep30-21swapper/319:05:233
140052321307,4sleep20-21swapper/219:07:542
140462316310,4sleep10-21swapper/119:08:251
14438993150,314cyclictest32029-21kworker/u16:1+efi_rts_wq19:55:121
14438993130,312cyclictest5846-21kworker/u16:0+efi_rts_wq21:10:211
14437993120,311cyclictest5846-21kworker/u16:0+efi_rts_wq22:50:380
14440993110,310cyclictest6163-21kworker/u16:0+efi_rts_wq23:55:143
14438993110,310cyclictest15408-21kworker/u16:3+efi_rts_wq20:55:191
14440993100,309cyclictest6163-21kworker/u16:0+efi_rts_wq00:25:543
14438993090,308cyclictest5846-21kworker/u16:0+efi_rts_wq22:40:371
14439993070,306cyclictest6163-21kworker/u16:0+efi_rts_wq00:30:132
14439993070,306cyclictest32029-21kworker/u16:1+efi_rts_wq23:05:412
14438993070,306cyclictest5846-21kworker/u16:0+efi_rts_wq22:15:131
14437993070,306cyclictest15408-21kworker/u16:3+efi_rts_wq21:05:130
14437993070,306cyclictest15408-21kworker/u16:3+efi_rts_wq19:55:100
14440993060,305cyclictest15408-21kworker/u16:3+efi_rts_wq20:25:153
14439993060,305cyclictest32029-21kworker/u16:1+efi_rts_wq22:25:122
14440993050,304cyclictest32029-21kworker/u16:1+efi_rts_wq23:45:113
14437993050,304cyclictest32029-21kworker/u16:1+efi_rts_wq19:20:130
14439993030,302cyclictest6163-21kworker/u16:0+efi_rts_wq00:10:122
14438993020,301cyclictest5846-21kworker/u16:0+efi_rts_wq22:20:131
14438993020,301cyclictest32029-21kworker/u16:1+efi_rts_wq20:10:121
14440993000,299cyclictest32029-21kworker/u16:1+efi_rts_wq23:50:133
14437992990,298cyclictest32029-21kworker/u16:1+efi_rts_wq19:45:080
14438992980,297cyclictest32029-21kworker/u16:1+efi_rts_wq21:30:131
14438992980,297cyclictest32029-21kworker/u16:1+efi_rts_wq21:30:121
14437992980,297cyclictest32029-21kworker/u16:1+efi_rts_wq21:20:130
14437992960,295cyclictest6163-21kworker/u16:0+efi_rts_wq23:30:450
14437992940,293cyclictest32029-21kworker/u16:1+efi_rts_wq23:55:470
14437992930,291cyclictest15408-21kworker/u16:3+efi_rts_wq20:15:140
14439992920,291cyclictest5846-21kworker/u16:0+efi_rts_wq22:00:292
14439992920,291cyclictest32029-21kworker/u16:1+efi_rts_wq20:45:132
14438992920,291cyclictest5846-21kworker/u16:0+efi_rts_wq22:25:341
14438992920,291cyclictest15408-21kworker/u16:3+efi_rts_wq19:10:131
14440992900,289cyclictest5846-21kworker/u16:0+efi_rts_wq21:55:133
14438992900,289cyclictest15408-21kworker/u16:3+efi_rts_wq21:00:101
14437992900,289cyclictest5846-21kworker/u16:0+efi_rts_wq21:50:120
14437992890,288cyclictest32029-21kworker/u16:1+efi_rts_wq20:35:140
14437992890,288cyclictest15408-21kworker/u16:3+efi_rts_wq20:55:130
14440992860,285cyclictest32029-21kworker/u16:1+efi_rts_wq21:50:273
14439992850,284cyclictest32029-21kworker/u16:1+efi_rts_wq22:10:112
14439992850,283cyclictest32029-21kworker/u16:1+efi_rts_wq22:30:102
14438992850,284cyclictest5846-21kworker/u16:0+efi_rts_wq21:20:221
14438992840,283cyclictest15408-21kworker/u16:3+efi_rts_wq20:50:131
14437992840,283cyclictest32029-21kworker/u16:1+efi_rts_wq22:35:130
14439992830,282cyclictest32029-21kworker/u16:1+efi_rts_wq23:30:132
14439992830,282cyclictest15408-21kworker/u16:3+efi_rts_wq19:45:132
14440992820,281cyclictest32029-21kworker/u16:1+efi_rts_wq19:30:033
14438992820,281cyclictest32029-21kworker/u16:1+efi_rts_wq23:25:431
14440992810,280cyclictest21589-21kworker/u16:2+efi_rts_wq23:05:133
14440992810,279cyclictest5846-21kworker/u16:0+efi_rts_wq22:40:113
14440992810,278cyclictest32029-21kworker/u16:1+efi_rts_wq21:10:133
14438992810,280cyclictest5846-21kworker/u16:0+efi_rts_wq22:55:131
14438992800,279cyclictest32029-21kworker/u16:1+efi_rts_wq21:15:131
14437992790,278cyclictest5846-21kworker/u16:0+efi_rts_wq21:40:130
14438992780,277cyclictest6163-21kworker/u16:0+efi_rts_wq23:40:461
14440992750,274cyclictest15408-21kworker/u16:3+efi_rts_wq20:05:123
14439992750,274cyclictest32029-21kworker/u16:1+efi_rts_wq21:45:132
14439992750,273cyclictest32029-21kworker/u16:1+efi_rts_wq23:00:132
14438992750,274cyclictest32029-21kworker/u16:1+efi_rts_wq20:05:141
14438992740,273cyclictest27070-21kworker/u16:3+efi_rts_wq23:15:121
14439992720,270cyclictest21589-21kworker/u16:2+efi_rts_wq23:10:132
14438992720,270cyclictest5846-21kworker/u16:0+efi_rts_wq21:40:121
14437992710,270cyclictest6163-21kworker/u16:0+efi_rts_wq00:20:120
14437992710,270cyclictest32029-21kworker/u16:1+efi_rts_wq23:25:130
14440992700,269cyclictest5846-21kworker/u16:0+efi_rts_wq22:00:133
14437992690,268cyclictest21589-21kworker/u16:2+efi_rts_wq23:10:130
14438992680,267cyclictest5846-21kworker/u16:0+efi_rts_wq22:10:301
14440992660,265cyclictest32029-21kworker/u16:1+efi_rts_wq22:30:113
14439992660,265cyclictest32029-21kworker/u16:1+efi_rts_wq22:50:102
14437992660,265cyclictest32029-21kworker/u16:1+efi_rts_wq19:40:130
14438992640,263cyclictest32029-21kworker/u16:1+efi_rts_wq20:00:151
14438992630,262cyclictest15408-21kworker/u16:3+efi_rts_wq20:20:111
14438992580,257cyclictest32029-21kworker/u16:1+efi_rts_wq22:45:371
14437992580,257cyclictest6163-21kworker/u16:0+efi_rts_wq00:05:110
14437992570,256cyclictest5846-21kworker/u16:0+efi_rts_wq21:55:280
14440992540,253cyclictest6163-21kworker/u16:0+efi_rts_wq00:20:123
14440992540,253cyclictest6163-21kworker/u16:0+efi_rts_wq00:00:493
14440992540,253cyclictest5846-21kworker/u16:0+efi_rts_wq21:45:273
14437992540,253cyclictest5846-21kworker/u16:0+efi_rts_wq22:30:340
14437992540,253cyclictest32029-21kworker/u16:1+efi_rts_wq23:00:140
14438992530,252cyclictest32029-21kworker/u16:1+efi_rts_wq22:05:141
14437992520,251cyclictest32029-21kworker/u16:1+efi_rts_wq19:35:130
14439992510,249cyclictest32029-21kworker/u16:1+efi_rts_wq23:50:132
14439992500,249cyclictest6163-21kworker/u16:0+efi_rts_wq00:35:122
14439992500,249cyclictest15408-21kworker/u16:3+efi_rts_wq19:10:132
14437992500,249cyclictest32029-21kworker/u16:1+efi_rts_wq21:30:240
14437992500,249cyclictest32029-21kworker/u16:1+efi_rts_wq21:30:240
14440992490,248cyclictest32029-21kworker/u16:1+efi_rts_wq20:40:173
14437992490,248cyclictest27070-21kworker/u16:3+efi_rts_wq23:15:430
14437992480,247cyclictest15408-21kworker/u16:3+efi_rts_wq19:25:130
14437992470,246cyclictest6163-21kworker/u16:0+efi_rts_wq23:40:120
14438992460,245cyclictest6163-21kworker/u16:0+efi_rts_wq23:35:121
14438992460,245cyclictest32029-21kworker/u16:1+efi_rts_wq20:25:131
14439992450,244cyclictest32029-21kworker/u16:1+efi_rts_wq20:05:142
14440992410,240cyclictest32029-21kworker/u16:1+efi_rts_wq23:20:123
14440992400,239cyclictest32029-21kworker/u16:1+efi_rts_wq22:45:133
14438992370,236cyclictest5846-21kworker/u16:0+efi_rts_wq21:35:131
14438992370,236cyclictest32029-21kworker/u16:1+efi_rts_wq19:15:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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