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2026-04-18 - 10:24

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 Sat Apr 18, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273082326319,5sleep00-21swapper/019:08:340
271522325318,4sleep30-21swapper/319:06:333
272012323316,5sleep20-21swapper/219:07:122
270832321313,5sleep10-21swapper/119:05:401
27687993200,317cyclictest23021-21kworker/u16:1+efi_rts_wq22:55:143
27686993160,315cyclictest23021-21kworker/u16:1+efi_rts_wq23:25:122
27685993150,314cyclictest23021-21kworker/u16:1+efi_rts_wq20:15:111
27685993140,313cyclictest2458-21kworker/u16:3+efi_rts_wq00:05:111
27687993130,312cyclictest2458-21kworker/u16:3+efi_rts_wq23:40:133
27687993120,311cyclictest23021-21kworker/u16:1+efi_rts_wq22:15:123
27687993110,310cyclictest23021-21kworker/u16:1+efi_rts_wq20:00:123
27686993100,309cyclictest1348-21kworker/u16:2+efi_rts_wq00:10:102
27684993090,308cyclictest2623-21kworker/u16:0+efi_rts_wq21:49:550
27687993060,305cyclictest2623-21kworker/u16:0+efi_rts_wq22:05:123
27687993050,304cyclictest2458-21kworker/u16:3+efi_rts_wq23:10:123
27685993050,304cyclictest23021-21kworker/u16:1+efi_rts_wq20:30:131
27684993050,304cyclictest23021-21kworker/u16:1+efi_rts_wq21:00:140
27686993010,300cyclictest23021-21kworker/u16:1+efi_rts_wq23:35:132
27686993010,300cyclictest23021-21kworker/u16:1+efi_rts_wq22:25:132
27685993010,300cyclictest23021-21kworker/u16:1+efi_rts_wq22:00:111
27685993000,299cyclictest23021-21kworker/u16:1+efi_rts_wq19:10:131
27684993000,299cyclictest2623-21kworker/u16:0+efi_rts_wq20:55:110
27684992990,298cyclictest2623-21kworker/u16:0+efi_rts_wq20:44:430
27686992970,296cyclictest23021-21kworker/u16:1+efi_rts_wq21:00:122
27686992970,295cyclictest2458-21kworker/u16:3+efi_rts_wq23:45:112
27685992960,295cyclictest2623-21kworker/u16:0+efi_rts_wq20:09:341
27685992950,294cyclictest23021-21kworker/u16:1+efi_rts_wq20:45:121
27684992950,294cyclictest2458-21kworker/u16:3+efi_rts_wq23:10:120
27684992950,294cyclictest13488-21kworker/u16:0+efi_rts_wq23:30:140
27684992940,293cyclictest23021-21kworker/u16:1+efi_rts_wq21:50:130
27684992940,293cyclictest23021-21kworker/u16:1+efi_rts_wq21:10:120
27684992940,291cyclictest23021-21kworker/u16:1+efi_rts_wq20:35:130
27685992930,292cyclictest2458-21kworker/u16:3+efi_rts_wq00:25:131
27685992930,292cyclictest23021-21kworker/u16:1+efi_rts_wq23:20:121
27685992920,291cyclictest2623-21kworker/u16:0+efi_rts_wq22:15:001
27684992900,289cyclictest23021-21kworker/u16:1+efi_rts_wq23:00:120
27685992890,288cyclictest18423-21kworker/u16:2+efi_rts_wq19:15:141
27684992890,286cyclictest23021-21kworker/u16:1+efi_rts_wq19:10:120
27686992880,287cyclictest2458-21kworker/u16:3+efi_rts_wq23:10:122
27686992870,286cyclictest2458-21kworker/u16:3+efi_rts_wq00:15:142
27685992870,286cyclictest2623-21kworker/u16:0+efi_rts_wq21:45:131
27684992850,284cyclictest2623-21kworker/u16:0+efi_rts_wq21:55:110
27684992840,281cyclictest2623-21kworker/u16:0+efi_rts_wq20:10:120
27687992830,282cyclictest2623-21kworker/u16:0+efi_rts_wq19:30:123
27685992820,281cyclictest23021-21kworker/u16:1+efi_rts_wq19:49:301
27684992820,281cyclictest23021-21kworker/u16:1+efi_rts_wq19:19:250
27686992810,280cyclictest23021-21kworker/u16:1+efi_rts_wq21:30:122
27686992800,279cyclictest23021-21kworker/u16:1+efi_rts_wq20:49:432
27685992800,279cyclictest2623-21kworker/u16:0+efi_rts_wq20:14:341
27684992800,279cyclictest2623-21kworker/u16:0+efi_rts_wq19:54:310
27684992790,278cyclictest23021-21kworker/u16:1+efi_rts_wq19:55:120
27685992780,277cyclictest2458-21kworker/u16:3+efi_rts_wq23:15:111
27687992750,274cyclictest23021-21kworker/u16:1+efi_rts_wq20:24:383
27685992750,273cyclictest2458-21kworker/u16:3+efi_rts_wq23:50:111
27684992740,273cyclictest2623-21kworker/u16:0+efi_rts_wq21:05:120
27687992730,272cyclictest2458-21kworker/u16:3+efi_rts_wq23:05:143
27684992730,272cyclictest23021-21kworker/u16:1+efi_rts_wq20:45:120
27685992720,271cyclictest2458-21kworker/u16:3+efi_rts_wq23:56:161
27685992720,271cyclictest23021-21kworker/u16:1+efi_rts_wq19:35:121
27686992710,270cyclictest2623-21kworker/u16:0+efi_rts_wq21:35:132
27686992710,270cyclictest23021-21kworker/u16:1+efi_rts_wq21:10:122
27686992700,269cyclictest23021-21kworker/u16:1+efi_rts_wq21:40:112
27685992700,268cyclictest2458-21kworker/u16:3+efi_rts_wq22:55:061
27685992690,268cyclictest23021-21kworker/u16:1+efi_rts_wq19:25:141
27687992660,265cyclictest1348-21kworker/u16:2+efi_rts_wq00:30:133
27685992660,265cyclictest2623-21kworker/u16:0+efi_rts_wq19:50:121
27687992640,263cyclictest2623-21kworker/u16:0+efi_rts_wq22:45:123
27686992640,263cyclictest18423-21kworker/u16:2+efi_rts_wq19:20:112
27685992640,263cyclictest23021-21kworker/u16:1+efi_rts_wq21:50:141
27686992630,262cyclictest23021-21kworker/u16:1+efi_rts_wq19:35:132
27684992630,262cyclictest23021-21kworker/u16:1+efi_rts_wq21:44:540
27684992620,261cyclictest23021-21kworker/u16:1+efi_rts_wq19:34:270
27685992600,259cyclictest1348-21kworker/u16:2+efi_rts_wq00:10:111
27684992570,256cyclictest2623-21kworker/u16:0+efi_rts_wq22:30:120
27687992550,254cyclictest2458-21kworker/u16:3+efi_rts_wq00:05:123
27685992550,254cyclictest2623-21kworker/u16:0+efi_rts_wq20:59:451
27685992550,254cyclictest2623-21kworker/u16:0+efi_rts_wq19:40:121
27685992550,254cyclictest23021-21kworker/u16:1+efi_rts_wq23:05:091
27684992540,253cyclictest2623-21kworker/u16:0+efi_rts_wq20:29:380
27687992520,251cyclictest23021-21kworker/u16:1+efi_rts_wq19:25:133
27684992510,250cyclictest23021-21kworker/u16:1+efi_rts_wq22:40:120
27684992510,250cyclictest13488-21kworker/u16:0+efi_rts_wq23:15:110
27684992500,249cyclictest2458-21kworker/u16:3+efi_rts_wq22:50:120
27686992490,248cyclictest2623-21kworker/u16:0+efi_rts_wq22:09:592
27686992490,248cyclictest23021-21kworker/u16:1+efi_rts_wq20:50:102
27686992440,243cyclictest2458-21kworker/u16:3+efi_rts_wq23:55:122
27685992440,243cyclictest2623-21kworker/u16:0+efi_rts_wq21:35:131
27684992440,243cyclictest23021-21kworker/u16:1+efi_rts_wq22:45:050
27685992430,242cyclictest1348-21kworker/u16:2+efi_rts_wq00:20:131
27686992420,241cyclictest2623-21kworker/u16:0+efi_rts_wq21:15:132
27684992420,241cyclictest23021-21kworker/u16:1+efi_rts_wq23:25:120
27687992410,240cyclictest2623-21kworker/u16:0+efi_rts_wq22:10:123
27685992400,239cyclictest23021-21kworker/u16:1+efi_rts_wq20:20:131
27687992390,238cyclictest23021-21kworker/u16:1+efi_rts_wq23:20:113
27686992390,238cyclictest2623-21kworker/u16:0+efi_rts_wq22:35:132
27686992380,237cyclictest2623-21kworker/u16:0+efi_rts_wq21:25:122
27687992370,236cyclictest2623-21kworker/u16:0+efi_rts_wq19:44:293
27686992370,236cyclictest2623-21kworker/u16:0+efi_rts_wq20:40:132
27684992360,235cyclictest1348-21kworker/u16:2+efi_rts_wq00:30:140
27687992340,233cyclictest2458-21kworker/u16:3+efi_rts_wq23:45:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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