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2025-12-27 - 11:00

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 Sat Dec 27, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293372319313,4sleep30-21swapper/319:07:193
293162319312,5sleep20-21swapper/219:07:022
294022318304,5sleep10-21swapper/119:08:091
294062315307,5sleep00-21swapper/019:08:120
29811993140,312cyclictest7060-21kworker/u16:2+efi_rts_wq23:00:150
29811993130,312cyclictest7060-21kworker/u16:2+efi_rts_wq19:40:130
29811993130,312cyclictest18613-21kworker/u16:0+efi_rts_wq00:35:110
29813993120,311cyclictest7060-21kworker/u16:2+efi_rts_wq20:50:142
29812993100,309cyclictest15377-21kworker/u16:1+efi_rts_wq22:05:141
29812993100,309cyclictest15377-21kworker/u16:1+efi_rts_wq20:25:131
29811993100,309cyclictest15377-21kworker/u16:1+efi_rts_wq21:34:260
29812993090,308cyclictest15377-21kworker/u16:1+efi_rts_wq22:30:151
29814993080,307cyclictest7060-21kworker/u16:2+efi_rts_wq22:04:323
29812993080,307cyclictest7060-21kworker/u16:2+efi_rts_wq19:15:121
29814993070,306cyclictest21053-21kworker/u16:1+efi_rts_wq00:25:133
29814993070,305cyclictest15377-21kworker/u16:1+efi_rts_wq20:55:133
29813993070,306cyclictest18613-21kworker/u16:0+efi_rts_wq00:30:132
29813993070,306cyclictest15377-21kworker/u16:1+efi_rts_wq22:25:142
29814993060,303cyclictest15377-21kworker/u16:1+efi_rts_wq22:20:153
29812993060,305cyclictest15377-21kworker/u16:1+efi_rts_wq21:25:121
29812993050,304cyclictest15377-21kworker/u16:1+efi_rts_wq19:25:131
29814993040,303cyclictest15377-21kworker/u16:1+efi_rts_wq20:49:193
29812993040,303cyclictest7060-21kworker/u16:2+efi_rts_wq19:49:091
29811993030,302cyclictest7060-21kworker/u16:2+efi_rts_wq19:29:050
29811993030,302cyclictest7060-21kworker/u16:2+efi_rts_wq19:20:130
29813993020,301cyclictest7060-21kworker/u16:2+efi_rts_wq19:15:122
29811993020,301cyclictest7198-21kworker/u16:3+efi_rts_wq23:35:100
29813992980,297cyclictest15377-21kworker/u16:1+efi_rts_wq19:30:122
29812992980,297cyclictest7060-21kworker/u16:2+efi_rts_wq22:54:401
29811992980,297cyclictest15377-21kworker/u16:1+efi_rts_wq22:30:160
29812992950,294cyclictest7060-21kworker/u16:2+efi_rts_wq20:35:121
29811992950,294cyclictest7060-21kworker/u16:2+efi_rts_wq21:05:140
29812992940,293cyclictest7060-21kworker/u16:2+efi_rts_wq20:20:121
29812992940,293cyclictest18613-21kworker/u16:0+efi_rts_wq23:51:201
29812992930,292cyclictest7060-21kworker/u16:2+efi_rts_wq20:30:141
29814992920,291cyclictest7060-21kworker/u16:2+efi_rts_wq22:25:133
29813992920,291cyclictest7060-21kworker/u16:2+efi_rts_wq23:30:132
29814992910,290cyclictest21053-21kworker/u16:1+efi_rts_wq00:01:223
29813992900,289cyclictest15377-21kworker/u16:1+efi_rts_wq20:00:132
29812992900,289cyclictest7060-21kworker/u16:2+efi_rts_wq22:29:371
29814992860,285cyclictest7060-21kworker/u16:2+efi_rts_wq22:14:353
29811992860,285cyclictest7060-21kworker/u16:2+efi_rts_wq20:45:130
29811992850,284cyclictest7060-21kworker/u16:2+efi_rts_wq20:40:130
29811992840,283cyclictest7060-21kworker/u16:2+efi_rts_wq19:45:150
29814992830,281cyclictest15377-21kworker/u16:1+efi_rts_wq22:49:393
29813992830,282cyclictest18613-21kworker/u16:0+efi_rts_wq00:05:142
29812992830,282cyclictest7198-21kworker/u16:3+efi_rts_wq23:40:121
29814992820,277cyclictest7198-21kworker/u16:3+efi_rts_wq23:20:113
29812992820,281cyclictest7060-21kworker/u16:2+efi_rts_wq20:14:131
29812992810,280cyclictest7060-21kworker/u16:2+efi_rts_wq19:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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