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2026-04-15 - 07:45

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 Wed Apr 15, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
289802348325,5sleep20-21swapper/219:07:412
291452321308,10sleep10-21swapper/119:09:481
290832316309,4sleep30-21swapper/319:09:023
291342315308,5sleep00-21swapper/019:09:390
29428993140,313cyclictest29914-21kworker/u16:0+efi_rts_wq20:49:233
29426993140,313cyclictest26039-21kworker/u16:2+efi_rts_wq00:30:131
29427993100,309cyclictest25387-21kworker/u16:0+efi_rts_wq23:29:512
29425993080,306cyclictest7653-21kworker/u16:1+efi_rts_wq22:45:140
29427993070,306cyclictest29914-21kworker/u16:0+efi_rts_wq21:39:332
29426993070,306cyclictest5691-21kworker/u16:1+efi_rts_wq00:10:141
29425993070,306cyclictest29914-21kworker/u16:0+efi_rts_wq21:00:120
29427993050,304cyclictest27704-21kworker/u16:3+efi_rts_wq21:50:132
29425993040,303cyclictest7653-21kworker/u16:1+efi_rts_wq22:30:140
29425993040,303cyclictest7653-21kworker/u16:1+efi_rts_wq22:30:140
29426993030,302cyclictest17781-21kworker/u16:4+efi_rts_wq19:24:061
29426993030,301cyclictest27704-21kworker/u16:3+efi_rts_wq23:24:511
29426993020,301cyclictest29280-21kworker/u16:1+efi_rts_wq19:40:141
29425993010,300cyclictest17781-21kworker/u16:4+efi_rts_wq20:20:130
29427993000,297cyclictest29914-21kworker/u16:0+efi_rts_wq21:25:132
29425993000,299cyclictest7653-21kworker/u16:1+efi_rts_wq22:50:130
29427992980,297cyclictest5691-21kworker/u16:1+efi_rts_wq00:10:142
29427992980,297cyclictest18423-21kworker/u16:2+efi_rts_wq19:55:132
29425992980,297cyclictest18423-21kworker/u16:2+efi_rts_wq19:55:120
29428992970,296cyclictest27704-21kworker/u16:3+efi_rts_wq23:15:153
29428992970,296cyclictest25387-21kworker/u16:0+efi_rts_wq23:30:123
29428992970,296cyclictest18423-21kworker/u16:2+efi_rts_wq20:10:123
29425992970,296cyclictest29914-21kworker/u16:0+efi_rts_wq21:45:130
29426992960,295cyclictest29914-21kworker/u16:0+efi_rts_wq21:34:321
29426992960,295cyclictest18423-21kworker/u16:2+efi_rts_wq21:19:291
29425992960,295cyclictest5691-21kworker/u16:1+efi_rts_wq00:05:140
29428992950,294cyclictest5691-21kworker/u16:1+efi_rts_wq23:55:143
29426992950,294cyclictest29280-21kworker/u16:1+efi_rts_wq19:29:071
29426992950,294cyclictest27704-21kworker/u16:3+efi_rts_wq21:55:131
29426992950,294cyclictest26039-21kworker/u16:2+efi_rts_wq23:49:561
29425992950,294cyclictest7653-21kworker/u16:1+efi_rts_wq22:10:100
29426992940,293cyclictest29914-21kworker/u16:0+efi_rts_wq20:30:111
29426992940,291cyclictest26039-21kworker/u16:2+efi_rts_wq00:25:131
29425992930,292cyclictest7653-21kworker/u16:1+efi_rts_wq22:40:130
29428992920,291cyclictest17781-21kworker/u16:4+efi_rts_wq19:20:133
29426992920,291cyclictest25387-21kworker/u16:0+efi_rts_wq23:34:531
29425992920,291cyclictest29914-21kworker/u16:0+efi_rts_wq20:45:140
29428992910,290cyclictest26039-21kworker/u16:2+efi_rts_wq00:25:033
29428992910,290cyclictest25387-21kworker/u16:0+efi_rts_wq23:35:123
29427992910,290cyclictest18423-21kworker/u16:2+efi_rts_wq20:09:142
29426992910,290cyclictest18423-21kworker/u16:2+efi_rts_wq20:40:141
29425992910,290cyclictest29280-21kworker/u16:1+efi_rts_wq19:25:130
29428992900,289cyclictest29914-21kworker/u16:0+efi_rts_wq20:35:133
29426992900,289cyclictest27704-21kworker/u16:3+efi_rts_wq23:05:121
29428992890,288cyclictest27704-21kworker/u16:3+efi_rts_wq22:15:143
29425992890,288cyclictest27704-21kworker/u16:3+efi_rts_wq22:20:130
29425992890,288cyclictest18423-21kworker/u16:2+efi_rts_wq21:14:280
29426992880,287cyclictest7653-21kworker/u16:1+efi_rts_wq22:05:121
29428992860,285cyclictest29914-21kworker/u16:0+efi_rts_wq20:30:113
29428992860,285cyclictest2722-21kworker/u16:3+efi_rts_wq23:50:103
29428992850,284cyclictest25387-21kworker/u16:0+efi_rts_wq23:44:553
29428992840,283cyclictest18423-21kworker/u16:2+efi_rts_wq21:20:133
29426992840,283cyclictest27704-21kworker/u16:3+efi_rts_wq22:24:391
29427992830,282cyclictest5691-21kworker/u16:1+efi_rts_wq00:35:112
29425992820,281cyclictest26039-21kworker/u16:2+efi_rts_wq23:59:590
29428992810,280cyclictest17781-21kworker/u16:4+efi_rts_wq19:40:133
29428992800,279cyclictest5691-21kworker/u16:1+efi_rts_wq00:15:003
29425992790,278cyclictest5691-21kworker/u16:1+efi_rts_wq00:35:110
29426992780,277cyclictest29280-21kworker/u16:1+efi_rts_wq19:35:141
29426992780,277cyclictest27704-21kworker/u16:3+efi_rts_wq22:00:121
29425992780,277cyclictest29914-21kworker/u16:0+efi_rts_wq20:25:140
29426992770,276cyclictest18423-21kworker/u16:2+efi_rts_wq21:35:131
29425992760,274cyclictest18423-21kworker/u16:2+efi_rts_wq20:15:140
29428992750,274cyclictest26039-21kworker/u16:2+efi_rts_wq00:30:053
29428992740,273cyclictest18423-21kworker/u16:2+efi_rts_wq20:05:133
29425992740,273cyclictest27704-21kworker/u16:3+efi_rts_wq22:04:370
29425992730,272cyclictest18423-21kworker/u16:2+efi_rts_wq20:55:130
29425992730,272cyclictest18423-21kworker/u16:2+efi_rts_wq20:34:210
29428992720,271cyclictest27704-21kworker/u16:3+efi_rts_wq22:35:123
29425992720,271cyclictest26039-21kworker/u16:2+efi_rts_wq22:55:130
29425992720,271cyclictest17781-21kworker/u16:4+efi_rts_wq19:10:120
29428992710,270cyclictest18423-21kworker/u16:2+efi_rts_wq21:30:153
29426992710,270cyclictest17781-21kworker/u16:4+efi_rts_wq19:50:121
29425992710,270cyclictest18423-21kworker/u16:2+efi_rts_wq20:39:220
29426992680,267cyclictest29914-21kworker/u16:0+efi_rts_wq21:29:311
29428992670,266cyclictest7653-21kworker/u16:1+efi_rts_wq22:25:123
29425992670,266cyclictest26039-21kworker/u16:2+efi_rts_wq23:04:470
29425992670,266cyclictest26039-21kworker/u16:2+efi_rts_wq00:20:130
29428992650,264cyclictest29280-21kworker/u16:1+efi_rts_wq19:15:013
29427992650,264cyclictest18423-21kworker/u16:2+efi_rts_wq21:05:142
29427992640,263cyclictest17781-21kworker/u16:4+efi_rts_wq19:50:122
29425992610,260cyclictest29914-21kworker/u16:0+efi_rts_wq21:25:130
29426992600,259cyclictest27704-21kworker/u16:3+efi_rts_wq22:59:471
29428992570,256cyclictest7653-21kworker/u16:1+efi_rts_wq22:09:383
29428992550,254cyclictest26039-21kworker/u16:2+efi_rts_wq00:20:133
29427992550,254cyclictest7653-21kworker/u16:1+efi_rts_wq22:14:392
29425992520,250cyclictest7653-21kworker/u16:1+efi_rts_wq23:10:130
29427992510,250cyclictest26039-21kworker/u16:2+efi_rts_wq23:54:572
29426992510,250cyclictest7653-21kworker/u16:1+efi_rts_wq22:45:131
29426992510,250cyclictest18423-21kworker/u16:2+efi_rts_wq20:10:121
29428992500,249cyclictest18423-21kworker/u16:2+efi_rts_wq20:50:133
29428992490,248cyclictest27704-21kworker/u16:3+efi_rts_wq21:50:133
29427992490,248cyclictest25387-21kworker/u16:0+efi_rts_wq23:39:532
29426992490,248cyclictest29914-21kworker/u16:0+efi_rts_wq21:49:351
29427992480,247cyclictest7653-21kworker/u16:1+efi_rts_wq22:55:132
29427992480,247cyclictest17781-21kworker/u16:4+efi_rts_wq19:30:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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