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2025-12-14 - 10:18

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 Dec 14, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217922319304,4sleep20-21swapper/219:09:542
22066993170,316cyclictest21514-21kworker/u16:3+efi_rts_wq19:15:182
216302317309,5sleep10-21swapper/119:07:491
22064993150,314cyclictest25647-21kworker/u16:0+efi_rts_wq23:05:130
214712314306,5sleep00-21swapper/019:05:470
22065993130,312cyclictest30823-21kworker/u16:1+efi_rts_wq23:25:131
215402313306,5sleep30-21swapper/319:06:393
22066993120,311cyclictest15541-21kworker/u16:2+efi_rts_wq21:51:502
22066993120,311cyclictest10890-21kworker/u16:1+efi_rts_wq22:47:002
22067993110,310cyclictest21514-21kworker/u16:3+efi_rts_wq19:45:133
22065993100,309cyclictest25647-21kworker/u16:0+efi_rts_wq00:32:201
22066993090,308cyclictest30823-21kworker/u16:1+efi_rts_wq23:35:132
22064993090,308cyclictest21514-21kworker/u16:3+efi_rts_wq20:10:120
22067993080,307cyclictest10890-21kworker/u16:1+efi_rts_wq22:41:593
22065993080,307cyclictest21514-21kworker/u16:3+efi_rts_wq20:20:121
22066993070,306cyclictest21514-21kworker/u16:3+efi_rts_wq19:30:132
22065993060,305cyclictest23125-21kworker/u16:3+efi_rts_wq23:12:051
22064993060,303cyclictest21514-21kworker/u16:3+efi_rts_wq20:40:110
22065993050,304cyclictest15541-21kworker/u16:2+efi_rts_wq20:15:131
22066993040,303cyclictest30823-21kworker/u16:1+efi_rts_wq00:00:112
22065993030,302cyclictest30823-21kworker/u16:1+efi_rts_wq23:20:121
22066993010,300cyclictest15541-21kworker/u16:2+efi_rts_wq19:55:122
22065993010,300cyclictest15541-21kworker/u16:2+efi_rts_wq21:35:121
22064992990,298cyclictest15541-21kworker/u16:2+efi_rts_wq21:05:140
22065992980,297cyclictest21514-21kworker/u16:3+efi_rts_wq20:35:121
22064992970,296cyclictest30823-21kworker/u16:1+efi_rts_wq23:40:120
22064992970,296cyclictest21514-21kworker/u16:3+efi_rts_wq19:25:120
22067992960,293cyclictest10890-21kworker/u16:1+efi_rts_wq22:50:113
22064992960,295cyclictest25647-21kworker/u16:0+efi_rts_wq23:32:080
22066992940,291cyclictest25647-21kworker/u16:0+efi_rts_wq00:25:122
22067992930,292cyclictest15541-21kworker/u16:2+efi_rts_wq21:30:113
22067992930,292cyclictest15541-21kworker/u16:2+efi_rts_wq21:15:133
22066992920,291cyclictest21514-21kworker/u16:3+efi_rts_wq22:15:132
22067992910,290cyclictest30823-21kworker/u16:1+efi_rts_wq23:35:133
22067992910,290cyclictest21514-21kworker/u16:3+efi_rts_wq22:00:123
22067992910,290cyclictest21514-21kworker/u16:3+efi_rts_wq21:20:133
22064992900,289cyclictest21514-21kworker/u16:3+efi_rts_wq21:41:480
22064992900,289cyclictest15541-21kworker/u16:2+efi_rts_wq22:05:140
22065992890,288cyclictest21514-21kworker/u16:3+efi_rts_wq20:50:131
22065992890,288cyclictest15541-21kworker/u16:2+efi_rts_wq20:30:151
22064992890,288cyclictest21514-21kworker/u16:3+efi_rts_wq21:20:130
22064992870,286cyclictest15541-21kworker/u16:2+efi_rts_wq19:20:120
22065992850,284cyclictest15541-21kworker/u16:2+efi_rts_wq22:20:131
22064992850,284cyclictest21514-21kworker/u16:3+efi_rts_wq21:16:440
22066992820,281cyclictest21514-21kworker/u16:3+efi_rts_wq20:21:332
22065992820,281cyclictest21514-21kworker/u16:3+efi_rts_wq20:00:121
22064992820,281cyclictest21514-21kworker/u16:3+efi_rts_wq20:50:130
22067992780,277cyclictest23125-21kworker/u16:3+efi_rts_wq23:00:123
22065992780,277cyclictest25647-21kworker/u16:0+efi_rts_wq23:45:121
22067992760,275cyclictest25647-21kworker/u16:0+efi_rts_wq00:10:123
22064992760,275cyclictest15541-21kworker/u16:2+efi_rts_wq21:25:130
22067992750,274cyclictest21514-21kworker/u16:3+efi_rts_wq22:30:133
22067992750,274cyclictest21514-21kworker/u16:3+efi_rts_wq20:11:313
22066992750,274cyclictest30823-21kworker/u16:1+efi_rts_wq00:07:142
22066992730,272cyclictest25647-21kworker/u16:0+efi_rts_wq23:05:132
22064992730,272cyclictest21514-21kworker/u16:3+efi_rts_wq22:16:540
22065992710,269cyclictest23125-21kworker/u16:3+efi_rts_wq23:00:121
22067992690,268cyclictest30823-21kworker/u16:1+efi_rts_wq23:30:103
22064992680,267cyclictest25647-21kworker/u16:0+efi_rts_wq00:22:180
22065992670,266cyclictest25647-21kworker/u16:0+efi_rts_wq23:52:121
22065992670,266cyclictest15541-21kworker/u16:2+efi_rts_wq21:55:101
22064992650,264cyclictest25647-21kworker/u16:0+efi_rts_wq00:35:140
22066992630,262cyclictest23125-21kworker/u16:3+efi_rts_wq23:00:122
22067992620,261cyclictest23125-21kworker/u16:3+efi_rts_wq23:10:133
22067992620,261cyclictest21514-21kworker/u16:3+efi_rts_wq19:50:133
22064992620,261cyclictest10890-21kworker/u16:1+efi_rts_wq22:57:020
22065992610,260cyclictest21514-21kworker/u16:3+efi_rts_wq19:26:221
22065992590,258cyclictest25647-21kworker/u16:0+efi_rts_wq00:25:131
22067992580,257cyclictest30823-21kworker/u16:1+efi_rts_wq00:20:123
22064992580,257cyclictest15541-21kworker/u16:2+efi_rts_wq19:15:180
22065992570,256cyclictest21514-21kworker/u16:3+efi_rts_wq20:40:111
22065992570,256cyclictest21514-21kworker/u16:3+efi_rts_wq19:15:011
22064992570,256cyclictest21514-21kworker/u16:3+efi_rts_wq21:00:130
22067992540,253cyclictest30823-21kworker/u16:1+efi_rts_wq00:15:133
22065992540,253cyclictest15541-21kworker/u16:2+efi_rts_wq20:25:111
22065992530,252cyclictest21514-21kworker/u16:3+efi_rts_wq20:55:121
22067992490,247cyclictest25647-21kworker/u16:0+efi_rts_wq23:15:103
22066992490,248cyclictest21514-21kworker/u16:3+efi_rts_wq20:31:352
22065992490,248cyclictest10890-21kworker/u16:1+efi_rts_wq22:55:131
22065992480,247cyclictest21514-21kworker/u16:3+efi_rts_wq21:45:131
22065992480,247cyclictest21514-21kworker/u16:3+efi_rts_wq21:45:131
22064992480,245cyclictest21514-21kworker/u16:3+efi_rts_wq21:50:120
22064992470,246cyclictest25647-21kworker/u16:0+efi_rts_wq23:37:090
22066992390,238cyclictest21514-21kworker/u16:3+efi_rts_wq22:10:112
22064992390,238cyclictest21514-21kworker/u16:3+efi_rts_wq20:35:120
22066992360,235cyclictest30823-21kworker/u16:1+efi_rts_wq23:20:122
22065992340,233cyclictest21514-21kworker/u16:3+efi_rts_wq19:45:131
22067992320,231cyclictest15541-21kworker/u16:2+efi_rts_wq20:05:143
22067992310,230cyclictest15541-21kworker/u16:2+efi_rts_wq19:10:093
22065992310,230cyclictest21514-21kworker/u16:3+efi_rts_wq22:11:531
22065992310,229cyclictest25647-21kworker/u16:0+efi_rts_wq23:05:131
22065992280,226cyclictest25647-21kworker/u16:0+efi_rts_wq23:15:101
22067992250,224cyclictest15541-21kworker/u16:2+efi_rts_wq19:35:143
22067992230,222cyclictest30823-21kworker/u16:1+efi_rts_wq23:40:123
22067992210,220cyclictest30823-21kworker/u16:1+efi_rts_wq23:57:123
22065992210,219cyclictest21514-21kworker/u16:3+efi_rts_wq21:40:121
22065992200,219cyclictest21514-21kworker/u16:3+efi_rts_wq19:30:131
22064992200,219cyclictest25647-21kworker/u16:0+efi_rts_wq23:45:120
22065992190,218cyclictest15541-21kworker/u16:2+efi_rts_wq19:40:121
22064992190,218cyclictest15541-21kworker/u16:2+efi_rts_wq21:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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