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2026-07-23 - 14:45

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 Thu Jul 23, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74692318304,5sleep20-21swapper/219:08:092
73672316310,4sleep30-21swapper/319:06:503
73022316309,5sleep00-21swapper/019:05:590
72782314308,4sleep10-21swapper/119:05:401
7882992990,298cyclictest18821-21kworker/u16:0+efi_rts_wq00:31:171
7881992980,297cyclictest26604-21kworker/u16:3+efi_rts_wq21:05:190
7884992950,294cyclictest26604-21kworker/u16:3+efi_rts_wq19:40:133
7881992940,293cyclictest26604-21kworker/u16:3+efi_rts_wq20:09:110
7883992920,291cyclictest10941-21kworker/u16:2+efi_rts_wq23:10:122
7882992920,291cyclictest7146-21kworker/u16:1+efi_rts_wq23:05:131
7882992920,291cyclictest26604-21kworker/u16:3+efi_rts_wq19:54:081
7881992920,291cyclictest18821-21kworker/u16:0+efi_rts_wq00:20:120
7884992910,290cyclictest26604-21kworker/u16:3+efi_rts_wq19:15:133
7881992910,289cyclictest7146-21kworker/u16:1+efi_rts_wq23:20:140
7883992900,287cyclictest26604-21kworker/u16:3+efi_rts_wq21:25:122
7881992900,289cyclictest10941-21kworker/u16:2+efi_rts_wq22:20:130
7884992890,288cyclictest3924-21kworker/u16:1+efi_rts_wq20:55:133
7883992890,288cyclictest18821-21kworker/u16:0+efi_rts_wq23:30:142
7882992880,285cyclictest14485-21kworker/u16:4+efi_rts_wq22:00:121
7883992870,286cyclictest7146-21kworker/u16:1+efi_rts_wq23:20:142
7884992860,285cyclictest10941-21kworker/u16:2+efi_rts_wq22:09:343
7882992860,285cyclictest10941-21kworker/u16:2+efi_rts_wq22:39:391
7881992850,284cyclictest3924-21kworker/u16:1+efi_rts_wq20:20:110
7882992840,283cyclictest26604-21kworker/u16:3+efi_rts_wq19:10:131
7884992830,282cyclictest26604-21kworker/u16:3+efi_rts_wq19:50:123
7883992830,282cyclictest3924-21kworker/u16:1+efi_rts_wq19:35:142
7882992830,282cyclictest26604-21kworker/u16:3+efi_rts_wq19:44:061
7882992830,282cyclictest18821-21kworker/u16:0+efi_rts_wq00:21:151
7881992830,282cyclictest3924-21kworker/u16:1+efi_rts_wq21:10:130
7884992810,280cyclictest3924-21kworker/u16:1+efi_rts_wq19:20:123
7882992810,280cyclictest10941-21kworker/u16:2+efi_rts_wq22:25:121
7881992810,278cyclictest3924-21kworker/u16:1+efi_rts_wq19:45:140
7884992790,278cyclictest3924-21kworker/u16:1+efi_rts_wq21:55:143
7884992790,278cyclictest26604-21kworker/u16:3+efi_rts_wq20:34:163
7882992790,278cyclictest10941-21kworker/u16:2+efi_rts_wq22:10:141
7882992780,277cyclictest26604-21kworker/u16:3+efi_rts_wq21:29:251
7884992760,275cyclictest3924-21kworker/u16:1+efi_rts_wq20:35:143
7882992760,275cyclictest26604-21kworker/u16:3+efi_rts_wq20:05:141
7882992750,274cyclictest26604-21kworker/u16:3+efi_rts_wq20:25:141
7881992750,274cyclictest17205-21kworker/u16:0+efi_rts_wq23:00:140
7884992740,273cyclictest26604-21kworker/u16:3+efi_rts_wq20:40:133
7882992740,272cyclictest25987-21kworker/u16:2+efi_rts_wq00:15:111
7881992740,273cyclictest18821-21kworker/u16:0+efi_rts_wq23:56:100
7881992740,273cyclictest10941-21kworker/u16:2+efi_rts_wq22:55:120
7884992730,272cyclictest26604-21kworker/u16:3+efi_rts_wq20:54:193
7882992730,272cyclictest7146-21kworker/u16:1+efi_rts_wq23:15:151
7884992710,270cyclictest3924-21kworker/u16:1+efi_rts_wq21:24:243
7884992700,267cyclictest3924-21kworker/u16:1+efi_rts_wq21:30:153
7884992680,267cyclictest26604-21kworker/u16:3+efi_rts_wq21:09:223
7882992670,266cyclictest3924-21kworker/u16:1+efi_rts_wq20:30:141
7884992660,265cyclictest25987-21kworker/u16:2+efi_rts_wq23:40:143
7882992660,265cyclictest3924-21kworker/u16:1+efi_rts_wq21:00:121
7882992650,264cyclictest26604-21kworker/u16:3+efi_rts_wq21:15:141
7882992640,263cyclictest26604-21kworker/u16:3+efi_rts_wq20:15:131
7881992640,263cyclictest3924-21kworker/u16:1+efi_rts_wq21:04:210
7884992620,261cyclictest3924-21kworker/u16:1+efi_rts_wq19:45:143
7882992620,261cyclictest26604-21kworker/u16:3+efi_rts_wq20:00:121
7882992600,259cyclictest3924-21kworker/u16:1+efi_rts_wq21:20:131
7882992600,259cyclictest25987-21kworker/u16:2+efi_rts_wq00:25:111
7884992590,258cyclictest10941-21kworker/u16:2+efi_rts_wq22:55:123
7881992590,258cyclictest3924-21kworker/u16:1+efi_rts_wq19:55:140
7881992560,255cyclictest18821-21kworker/u16:0+efi_rts_wq23:30:140
7884992550,254cyclictest10941-21kworker/u16:2+efi_rts_wq22:44:403
7884992540,253cyclictest3924-21kworker/u16:1+efi_rts_wq20:45:103
7882992520,251cyclictest25987-21kworker/u16:2+efi_rts_wq23:46:081
7884992510,250cyclictest26604-21kworker/u16:3+efi_rts_wq20:15:133
7883992491,247cyclictest18821-21kworker/u16:0+efi_rts_wq23:39:522
7881992480,247cyclictest26604-21kworker/u16:3+efi_rts_wq21:45:130
7884992470,246cyclictest10941-21kworker/u16:2+efi_rts_wq23:25:143
7882992450,244cyclictest26604-21kworker/u16:3+efi_rts_wq21:50:121
7881992450,244cyclictest25987-21kworker/u16:2+efi_rts_wq00:15:110
7882992440,243cyclictest26604-21kworker/u16:3+efi_rts_wq21:49:301
7884992400,239cyclictest10941-21kworker/u16:2+efi_rts_wq23:10:123
7882992400,239cyclictest26604-21kworker/u16:3+efi_rts_wq20:50:161
7881992350,234cyclictest25987-21kworker/u16:2+efi_rts_wq23:45:130
7884992340,233cyclictest3924-21kworker/u16:1+efi_rts_wq21:39:293
7882992330,232cyclictest3924-21kworker/u16:1+efi_rts_wq19:59:091
7882992320,230cyclictest10941-21kworker/u16:2+efi_rts_wq23:04:441
7884992310,230cyclictest25987-21kworker/u16:2+efi_rts_wq00:16:143
7882992310,230cyclictest25987-21kworker/u16:2+efi_rts_wq23:50:131
7881992310,230cyclictest25987-21kworker/u16:2+efi_rts_wq00:06:120
7882992280,227cyclictest3924-21kworker/u16:1+efi_rts_wq19:34:041
7883992270,226cyclictest25987-21kworker/u16:2+efi_rts_wq23:55:142
7882992270,226cyclictest18821-21kworker/u16:0+efi_rts_wq00:11:131
7881992250,224cyclictest10941-21kworker/u16:2+efi_rts_wq22:05:130
7884992230,220cyclictest10941-21kworker/u16:2+efi_rts_wq22:45:143
7883992210,220cyclictest18821-21kworker/u16:0+efi_rts_wq00:30:122
7881992210,220cyclictest10941-21kworker/u16:2+efi_rts_wq22:40:100
7884992160,215cyclictest3924-21kworker/u16:1+efi_rts_wq21:14:233
7883992140,213cyclictest7146-21kworker/u16:1+efi_rts_wq23:09:452
7882992140,213cyclictest26604-21kworker/u16:3+efi_rts_wq19:19:001
7882992140,213cyclictest10941-21kworker/u16:2+efi_rts_wq22:54:421
7882992130,212cyclictest17205-21kworker/u16:0+efi_rts_wq22:19:351
7881992130,211cyclictest17205-21kworker/u16:0+efi_rts_wq22:50:140
7882992100,209cyclictest25987-21kworker/u16:2+efi_rts_wq00:35:141
7881992100,209cyclictest25987-21kworker/u16:2+efi_rts_wq00:00:110
7881992100,209cyclictest10941-21kworker/u16:2+efi_rts_wq22:25:120
7882992080,207cyclictest3924-21kworker/u16:1+efi_rts_wq21:30:151
7881992080,207cyclictest17205-21kworker/u16:0+efi_rts_wq22:15:110
7884992070,206cyclictest26604-21kworker/u16:3+efi_rts_wq21:54:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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