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2026-08-29 - 03:21

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 Aug 29, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307882326320,4sleep10-21swapper/119:05:281
308412321307,5sleep00-21swapper/019:06:080
311252318311,4sleep20-21swapper/219:09:462
307802316310,4sleep30-21swapper/319:05:223
31410992970,296cyclictest29295-21kworker/u16:2+efi_rts_wq00:10:133
31409992970,296cyclictest12208-21kworker/u16:1+efi_rts_wq19:40:112
31408992970,296cyclictest11747-21kworker/u16:0+efi_rts_wq20:04:301
31407992970,296cyclictest486-21kworker/u16:1+efi_rts_wq23:00:140
31407992940,293cyclictest11747-21kworker/u16:0+efi_rts_wq20:35:120
31408992920,291cyclictest486-21kworker/u16:1+efi_rts_wq23:40:121
31408992920,291cyclictest13392-21kworker/u16:2+efi_rts_wq21:10:121
31408992910,290cyclictest10746-21kworker/u16:3+efi_rts_wq21:04:421
31408992900,288cyclictest8153-21kworker/u16:2+efi_rts_wq23:25:131
31408992900,288cyclictest3829-21kworker/u16:0+efi_rts_wq22:40:021
31409992890,288cyclictest8077-21kworker/u16:3+efi_rts_wq19:10:112
31408992890,288cyclictest11747-21kworker/u16:0+efi_rts_wq20:29:361
31408992890,288cyclictest10746-21kworker/u16:3+efi_rts_wq21:55:121
31407992890,288cyclictest24377-21kworker/u16:3+efi_rts_wq23:51:020
31410992880,287cyclictest10746-21kworker/u16:3+efi_rts_wq21:09:443
31410992880,287cyclictest10746-21kworker/u16:3+efi_rts_wq21:09:443
31409992880,287cyclictest8153-21kworker/u16:2+efi_rts_wq23:35:122
31410992870,286cyclictest3829-21kworker/u16:0+efi_rts_wq22:09:563
31408992870,286cyclictest486-21kworker/u16:1+efi_rts_wq23:55:131
31407992870,286cyclictest3829-21kworker/u16:0+efi_rts_wq22:30:120
31410992850,284cyclictest11747-21kworker/u16:0+efi_rts_wq20:59:423
31409992850,284cyclictest3829-21kworker/u16:0+efi_rts_wq22:25:132
31409992850,284cyclictest13392-21kworker/u16:2+efi_rts_wq21:34:492
31407992840,283cyclictest29295-21kworker/u16:2+efi_rts_wq00:10:130
31410992830,282cyclictest24497-21kworker/u16:1+efi_rts_wq20:39:383
31409992830,282cyclictest486-21kworker/u16:1+efi_rts_wq23:10:122
31408992830,282cyclictest10746-21kworker/u16:3+efi_rts_wq21:54:541
31409992820,279cyclictest12208-21kworker/u16:1+efi_rts_wq19:15:012
31408992820,281cyclictest17719-21kworker/u16:2+efi_rts_wq20:05:101
31408992810,280cyclictest10746-21kworker/u16:3+efi_rts_wq21:20:111
31410992800,278cyclictest8153-21kworker/u16:2+efi_rts_wq23:20:093
31409992790,278cyclictest24497-21kworker/u16:1+efi_rts_wq20:30:122
31408992790,278cyclictest12208-21kworker/u16:1+efi_rts_wq19:24:231
31408992790,278cyclictest10746-21kworker/u16:3+efi_rts_wq21:30:131
31408992780,277cyclictest26665-21kworker/u16:0+efi_rts_wq00:01:041
31407992780,277cyclictest486-21kworker/u16:1+efi_rts_wq00:00:130
31407992780,277cyclictest12208-21kworker/u16:1+efi_rts_wq19:44:270
31407992780,277cyclictest10746-21kworker/u16:3+efi_rts_wq21:05:110
31407992780,277cyclictest10746-21kworker/u16:3+efi_rts_wq21:05:110
31409992770,276cyclictest10746-21kworker/u16:3+efi_rts_wq22:30:002
31407992720,271cyclictest21103-21kworker/u16:2+efi_rts_wq22:40:120
31409992710,270cyclictest486-21kworker/u16:1+efi_rts_wq23:15:092
31409992710,270cyclictest10746-21kworker/u16:3+efi_rts_wq22:55:132
31410992700,269cyclictest24497-21kworker/u16:1+efi_rts_wq20:45:113
31410992700,269cyclictest12208-21kworker/u16:1+efi_rts_wq19:50:133
31408992700,269cyclictest12208-21kworker/u16:1+efi_rts_wq19:35:121
31407992690,268cyclictest8077-21kworker/u16:3+efi_rts_wq19:30:130
31410992670,266cyclictest3829-21kworker/u16:0+efi_rts_wq22:20:123
31408992660,265cyclictest10746-21kworker/u16:3+efi_rts_wq21:40:111
31408992660,264cyclictest486-21kworker/u16:1+efi_rts_wq23:10:121
31407992650,264cyclictest11747-21kworker/u16:0+efi_rts_wq20:55:140
31407992650,264cyclictest11747-21kworker/u16:0+efi_rts_wq20:50:110
31407992640,263cyclictest24497-21kworker/u16:1+efi_rts_wq20:45:110
31408992630,262cyclictest486-21kworker/u16:1+efi_rts_wq00:05:121
31410992610,258cyclictest10746-21kworker/u16:3+efi_rts_wq21:25:133
31409992610,258cyclictest10746-21kworker/u16:3+efi_rts_wq21:50:122
31408992610,260cyclictest10746-21kworker/u16:3+efi_rts_wq22:45:141
31410992600,259cyclictest12208-21kworker/u16:1+efi_rts_wq19:19:223
31410992600,258cyclictest486-21kworker/u16:1+efi_rts_wq23:10:073
31408992590,258cyclictest8077-21kworker/u16:3+efi_rts_wq19:25:131
31408992590,257cyclictest3829-21kworker/u16:0+efi_rts_wq22:35:121
31410992570,256cyclictest12208-21kworker/u16:1+efi_rts_wq19:49:283
31410992560,255cyclictest10746-21kworker/u16:3+efi_rts_wq22:00:123
31410992550,254cyclictest486-21kworker/u16:1+efi_rts_wq23:30:103
31410992550,254cyclictest24497-21kworker/u16:1+efi_rts_wq20:40:133
31410992550,254cyclictest13392-21kworker/u16:2+efi_rts_wq21:39:503
31408992540,253cyclictest10746-21kworker/u16:3+efi_rts_wq21:35:131
31408992520,251cyclictest29295-21kworker/u16:2+efi_rts_wq00:35:121
31408992520,251cyclictest24497-21kworker/u16:1+efi_rts_wq20:34:361
31410992500,249cyclictest13392-21kworker/u16:2+efi_rts_wq21:00:123
31407992500,249cyclictest29295-21kworker/u16:2+efi_rts_wq00:36:110
31410992480,247cyclictest13392-21kworker/u16:2+efi_rts_wq21:15:123
31410992470,246cyclictest12208-21kworker/u16:1+efi_rts_wq19:35:123
31410992470,246cyclictest10746-21kworker/u16:3+efi_rts_wq21:30:133
31408992470,246cyclictest24497-21kworker/u16:1+efi_rts_wq20:49:401
31407992470,246cyclictest12208-21kworker/u16:1+efi_rts_wq19:45:120
31409992460,245cyclictest11747-21kworker/u16:0+efi_rts_wq20:00:122
31407992450,244cyclictest11747-21kworker/u16:0+efi_rts_wq20:10:130
31408992430,242cyclictest13392-21kworker/u16:2+efi_rts_wq21:29:471
31410992420,241cyclictest21103-21kworker/u16:2+efi_rts_wq22:40:113
31409992370,236cyclictest24497-21kworker/u16:1+efi_rts_wq20:15:132
31407992370,236cyclictest10746-21kworker/u16:3+efi_rts_wq22:35:000
31408992360,235cyclictest486-21kworker/u16:1+efi_rts_wq23:05:141
31409992350,232cyclictest13392-21kworker/u16:2+efi_rts_wq21:45:122
31410992340,233cyclictest8077-21kworker/u16:3+efi_rts_wq19:20:123
31409992330,232cyclictest21103-21kworker/u16:2+efi_rts_wq22:45:032
31409992280,227cyclictest24497-21kworker/u16:1+efi_rts_wq20:20:122
31410992270,226cyclictest486-21kworker/u16:1+efi_rts_wq00:25:133
31409992270,226cyclictest10746-21kworker/u16:3+efi_rts_wq22:10:112
31408992270,226cyclictest3829-21kworker/u16:0+efi_rts_wq22:20:121
31407992270,226cyclictest486-21kworker/u16:1+efi_rts_wq23:10:120
31408992260,225cyclictest11747-21kworker/u16:0+efi_rts_wq19:59:301
31407992260,225cyclictest12208-21kworker/u16:1+efi_rts_wq19:50:120
31410992240,223cyclictest8153-21kworker/u16:2+efi_rts_wq23:35:133
31410992230,222cyclictest486-21kworker/u16:1+efi_rts_wq23:45:123
31410992230,222cyclictest11747-21kworker/u16:0+efi_rts_wq20:00:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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