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2026-05-15 - 09:57

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 Fri May 15, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252032322306,5sleep30-21swapper/319:09:213
249042317303,5sleep10-21swapper/119:05:301
249822314307,5sleep20-21swapper/219:06:312
249252314307,5sleep00-21swapper/019:05:450
25526993000,299cyclictest5197-21kworker/u16:0+efi_rts_wq22:55:343
25524993000,299cyclictest1776-21kworker/u16:1+efi_rts_wq22:45:321
25523992980,297cyclictest1776-21kworker/u16:1+efi_rts_wq21:35:130
25523992980,296cyclictest1776-21kworker/u16:1+efi_rts_wq22:30:290
25523992960,295cyclictest9121-21kworker/u16:2+efi_rts_wq23:55:130
25523992950,294cyclictest1776-21kworker/u16:1+efi_rts_wq21:40:110
25525992940,293cyclictest5197-21kworker/u16:0+efi_rts_wq19:25:112
25523992940,293cyclictest9121-21kworker/u16:2+efi_rts_wq00:20:120
25526992920,291cyclictest5197-21kworker/u16:0+efi_rts_wq19:45:133
25526992910,290cyclictest1776-21kworker/u16:1+efi_rts_wq21:30:183
25526992900,288cyclictest1776-21kworker/u16:1+efi_rts_wq22:50:143
25524992900,289cyclictest5197-21kworker/u16:0+efi_rts_wq19:15:121
25526992890,288cyclictest1776-21kworker/u16:1+efi_rts_wq23:05:123
25525992890,288cyclictest5197-21kworker/u16:0+efi_rts_wq00:15:132
25526992880,287cyclictest5197-21kworker/u16:0+efi_rts_wq21:05:123
25526992870,286cyclictest1776-21kworker/u16:1+efi_rts_wq20:35:093
25525992870,286cyclictest9121-21kworker/u16:2+efi_rts_wq23:30:132
25525992870,286cyclictest5197-21kworker/u16:0+efi_rts_wq23:40:132
25523992860,285cyclictest5197-21kworker/u16:0+efi_rts_wq21:55:120
25526992850,284cyclictest1776-21kworker/u16:1+efi_rts_wq20:45:113
25526992840,283cyclictest5197-21kworker/u16:0+efi_rts_wq23:15:133
25525992840,283cyclictest1776-21kworker/u16:1+efi_rts_wq21:05:142
25524992840,283cyclictest5197-21kworker/u16:0+efi_rts_wq22:25:281
25523992840,283cyclictest9121-21kworker/u16:2+efi_rts_wq00:10:130
25525992830,282cyclictest5197-21kworker/u16:0+efi_rts_wq23:15:132
25526992820,281cyclictest5197-21kworker/u16:0+efi_rts_wq21:00:133
25526992820,281cyclictest1776-21kworker/u16:1+efi_rts_wq22:00:133
25524992820,281cyclictest5197-21kworker/u16:0+efi_rts_wq00:05:161
25524992810,280cyclictest1776-21kworker/u16:1+efi_rts_wq20:10:121
25526992800,279cyclictest1776-21kworker/u16:1+efi_rts_wq20:30:123
25526992800,277cyclictest5197-21kworker/u16:0+efi_rts_wq00:00:103
25526992800,277cyclictest1776-21kworker/u16:1+efi_rts_wq23:10:153
25523992800,279cyclictest25195-21kworker/u16:2+efi_rts_wq19:20:110
25523992790,278cyclictest9121-21kworker/u16:2+efi_rts_wq00:35:150
25524992780,277cyclictest5197-21kworker/u16:0+efi_rts_wq20:05:141
25523992770,276cyclictest5197-21kworker/u16:0+efi_rts_wq21:25:120
25523992770,276cyclictest25195-21kworker/u16:2+efi_rts_wq19:29:570
25524992760,275cyclictest1776-21kworker/u16:1+efi_rts_wq21:40:111
25523992760,275cyclictest5197-21kworker/u16:0+efi_rts_wq23:50:130
25523992760,275cyclictest5197-21kworker/u16:0+efi_rts_wq20:50:120
25526992730,272cyclictest5197-21kworker/u16:0+efi_rts_wq22:05:123
25524992730,272cyclictest1776-21kworker/u16:1+efi_rts_wq22:50:131
25524992730,272cyclictest1776-21kworker/u16:1+efi_rts_wq20:40:131
25523992730,272cyclictest1776-21kworker/u16:1+efi_rts_wq21:20:160
25526992710,270cyclictest9121-21kworker/u16:2+efi_rts_wq00:20:533
25526992710,270cyclictest5197-21kworker/u16:0+efi_rts_wq23:25:133
25524992700,268cyclictest5197-21kworker/u16:0+efi_rts_wq22:05:121
25525992680,267cyclictest5197-21kworker/u16:0+efi_rts_wq22:25:102
25524992660,265cyclictest5197-21kworker/u16:0+efi_rts_wq19:10:121
25524992660,265cyclictest1776-21kworker/u16:1+efi_rts_wq19:50:121
25523992650,264cyclictest5197-21kworker/u16:0+efi_rts_wq00:05:500
25524992640,263cyclictest5197-21kworker/u16:0+efi_rts_wq00:25:131
25523992640,263cyclictest9121-21kworker/u16:2+efi_rts_wq00:15:520
25524992630,262cyclictest1776-21kworker/u16:1+efi_rts_wq20:35:131
25526992620,261cyclictest1923-21kworker/u16:3+efi_rts_wq23:20:123
25525992620,261cyclictest1776-21kworker/u16:1+efi_rts_wq20:55:122
25524992620,261cyclictest9121-21kworker/u16:2+efi_rts_wq23:45:131
25524992610,260cyclictest9121-21kworker/u16:2+efi_rts_wq23:30:131
25524992610,260cyclictest5197-21kworker/u16:0+efi_rts_wq23:00:141
25523992600,259cyclictest5197-21kworker/u16:0+efi_rts_wq00:00:100
25523992600,259cyclictest1776-21kworker/u16:1+efi_rts_wq22:20:280
25525992590,257cyclictest25195-21kworker/u16:2+efi_rts_wq19:35:112
25523992560,255cyclictest5197-21kworker/u16:0+efi_rts_wq20:05:030
25525992550,254cyclictest5197-21kworker/u16:0+efi_rts_wq21:55:232
25525992550,254cyclictest5197-21kworker/u16:0+efi_rts_wq21:15:152
25524992550,254cyclictest5197-21kworker/u16:0+efi_rts_wq00:30:551
25526992540,253cyclictest5197-21kworker/u16:0+efi_rts_wq19:25:113
25524992540,253cyclictest1776-21kworker/u16:1+efi_rts_wq22:35:131
25524992540,251cyclictest5197-21kworker/u16:0+efi_rts_wq23:40:131
25523992540,252cyclictest5197-21kworker/u16:0+efi_rts_wq23:25:140
25524992530,252cyclictest1776-21kworker/u16:1+efi_rts_wq21:45:131
25526992500,249cyclictest5197-21kworker/u16:0+efi_rts_wq20:55:123
25525992500,249cyclictest5197-21kworker/u16:0+efi_rts_wq22:45:142
25524992500,249cyclictest5197-21kworker/u16:0+efi_rts_wq21:00:131
25526992490,248cyclictest5197-21kworker/u16:0+efi_rts_wq20:00:123
25525992490,248cyclictest9121-21kworker/u16:2+efi_rts_wq23:45:132
25523992480,247cyclictest1776-21kworker/u16:1+efi_rts_wq20:20:120
25523992470,246cyclictest1776-21kworker/u16:1+efi_rts_wq22:15:120
25525992450,244cyclictest1776-21kworker/u16:1+efi_rts_wq20:45:122
25526992440,241cyclictest1776-21kworker/u16:1+efi_rts_wq21:20:133
25525992440,243cyclictest25195-21kworker/u16:2+efi_rts_wq19:15:002
25524992420,241cyclictest5197-21kworker/u16:0+efi_rts_wq20:25:111
25526992410,240cyclictest5197-21kworker/u16:0+efi_rts_wq22:20:123
25525992400,239cyclictest1776-21kworker/u16:1+efi_rts_wq20:10:112
25524992390,238cyclictest5197-21kworker/u16:0+efi_rts_wq21:15:161
25524992390,238cyclictest1776-21kworker/u16:1+efi_rts_wq21:50:131
25525992360,235cyclictest1776-21kworker/u16:1+efi_rts_wq22:15:122
25524992360,235cyclictest5197-21kworker/u16:0+efi_rts_wq19:30:111
25524992360,235cyclictest5197-21kworker/u16:0+efi_rts_wq19:30:111
25523992360,235cyclictest5197-21kworker/u16:0+efi_rts_wq20:30:130
25523992360,235cyclictest1776-21kworker/u16:1+efi_rts_wq21:10:130
25523992350,233cyclictest1776-21kworker/u16:1+efi_rts_wq22:35:140
25526992330,232cyclictest25195-21kworker/u16:2+efi_rts_wq19:24:573
25524992330,232cyclictest1923-21kworker/u16:3+efi_rts_wq23:20:121
25526992280,227cyclictest25195-21kworker/u16:2+efi_rts_wq19:30:133
25526992280,227cyclictest25195-21kworker/u16:2+efi_rts_wq19:30:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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