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2026-04-29 - 15:20

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 50 highest latencies:
System rackcslot3s.osadl.org (updated Wed Apr 29, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134872338313,23sleep10-21swapper/107:07:551
134882327321,4sleep20-21swapper/207:07:562
134692316310,4sleep30-21swapper/307:07:413
115912314307,5sleep00-21swapper/007:05:100
13912993130,312cyclictest2365-21kworker/u16:0+efi_rts_wq12:35:121
13912993120,311cyclictest643-21kworker/u16:2+efi_rts_wq07:25:141
13911993120,311cyclictest21520-21kworker/u16:3+efi_rts_wq10:22:020
13911993120,311cyclictest21520-21kworker/u16:3+efi_rts_wq10:22:020
13914993100,309cyclictest2365-21kworker/u16:0+efi_rts_wq11:52:193
13913993090,306cyclictest2365-21kworker/u16:0+efi_rts_wq12:00:122
13913993090,306cyclictest14334-21kworker/u16:1+efi_rts_wq08:50:122
13913993080,307cyclictest21520-21kworker/u16:3+efi_rts_wq10:11:592
13914993070,306cyclictest21520-21kworker/u16:3+efi_rts_wq10:15:133
13911993060,305cyclictest643-21kworker/u16:2+efi_rts_wq07:30:110
13911993060,305cyclictest643-21kworker/u16:2+efi_rts_wq07:25:150
13911993060,305cyclictest21520-21kworker/u16:3+efi_rts_wq09:01:470
13912993050,304cyclictest2365-21kworker/u16:0+efi_rts_wq12:25:141
13912993030,302cyclictest643-21kworker/u16:2+efi_rts_wq08:05:141
13913993020,301cyclictest14334-21kworker/u16:1+efi_rts_wq09:05:122
13914993010,300cyclictest643-21kworker/u16:2+efi_rts_wq08:25:133
13914993010,300cyclictest21520-21kworker/u16:3+efi_rts_wq09:20:133
13914993010,300cyclictest21520-21kworker/u16:3+efi_rts_wq08:45:133
13911993010,300cyclictest20681-21kworker/u16:0+efi_rts_wq10:55:130
13912993000,299cyclictest17937-21kworker/u16:1+efi_rts_wq11:30:111
13912993000,299cyclictest14334-21kworker/u16:1+efi_rts_wq09:05:121
13911993000,299cyclictest14334-21kworker/u16:1+efi_rts_wq09:15:120
13913992970,296cyclictest14334-21kworker/u16:1+efi_rts_wq08:40:122
13911992970,296cyclictest14334-21kworker/u16:1+efi_rts_wq09:55:140
13911992960,295cyclictest30355-21kworker/u16:0+efi_rts_wq08:20:120
13911992960,295cyclictest21520-21kworker/u16:3+efi_rts_wq09:40:130
13912992940,293cyclictest25529-21kworker/u16:3+efi_rts_wq12:22:231
13914992930,292cyclictest13601-21kworker/u16:1+efi_rts_wq07:15:013
13911992930,292cyclictest21520-21kworker/u16:3+efi_rts_wq08:35:120
13912992920,291cyclictest21520-21kworker/u16:3+efi_rts_wq10:10:131
13911992920,291cyclictest25529-21kworker/u16:3+efi_rts_wq12:20:140
13911992920,291cyclictest2365-21kworker/u16:0+efi_rts_wq12:35:120
13914992910,290cyclictest2365-21kworker/u16:0+efi_rts_wq12:00:123
13911992880,287cyclictest21520-21kworker/u16:3+efi_rts_wq10:10:130
13912992870,286cyclictest17937-21kworker/u16:1+efi_rts_wq11:25:121
13911992870,286cyclictest643-21kworker/u16:2+efi_rts_wq07:40:130
13911992870,286cyclictest21520-21kworker/u16:3+efi_rts_wq10:01:580
13911992870,284cyclictest25529-21kworker/u16:3+efi_rts_wq12:30:120
13912992850,284cyclictest14334-21kworker/u16:1+efi_rts_wq10:05:141
13911992850,284cyclictest13601-21kworker/u16:1+efi_rts_wq07:35:100
13911992840,283cyclictest17937-21kworker/u16:1+efi_rts_wq11:20:120
13914992820,281cyclictest23035-21kworker/u16:2+efi_rts_wq11:55:133
13914992820,281cyclictest14334-21kworker/u16:1+efi_rts_wq09:46:553
13914992820,281cyclictest10713-21kworker/u16:3+efi_rts_wq11:35:133
13913992820,280cyclictest23035-21kworker/u16:2+efi_rts_wq11:55:132
13912992820,281cyclictest10713-21kworker/u16:3+efi_rts_wq11:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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