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2026-08-22 - 05:01

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 22, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55112328321,5sleep00-21swapper/019:08:110
38172326319,5sleep20-21swapper/219:05:082
53002324318,4sleep30-21swapper/319:05:303
53332317303,4sleep10-21swapper/119:05:551
5919993010,300cyclictest31709-21kworker/u16:2+efi_rts_wq22:30:121
5918992990,298cyclictest31709-21kworker/u16:2+efi_rts_wq21:30:170
5920992970,296cyclictest31709-21kworker/u16:2+efi_rts_wq22:45:122
5918992970,294cyclictest13829-21kworker/u16:1+efi_rts_wq21:35:120
5920992950,294cyclictest31709-21kworker/u16:2+efi_rts_wq22:15:132
5920992930,292cyclictest13057-21kworker/u16:1+efi_rts_wq00:35:142
5920992930,291cyclictest858-21kworker/u16:0+efi_rts_wq23:45:112
5920992910,290cyclictest858-21kworker/u16:0+efi_rts_wq23:25:112
5919992910,290cyclictest13057-21kworker/u16:1+efi_rts_wq23:20:041
5918992910,290cyclictest24289-21kworker/u16:3+efi_rts_wq20:29:330
5918992910,289cyclictest13057-21kworker/u16:1+efi_rts_wq23:55:110
5919992900,289cyclictest31709-21kworker/u16:2+efi_rts_wq20:39:351
5918992890,288cyclictest13829-21kworker/u16:1+efi_rts_wq21:00:120
5919992870,286cyclictest24289-21kworker/u16:3+efi_rts_wq20:20:131
5919992860,285cyclictest858-21kworker/u16:0+efi_rts_wq00:25:111
5921992850,284cyclictest24289-21kworker/u16:3+efi_rts_wq20:10:113
5920992850,284cyclictest13829-21kworker/u16:1+efi_rts_wq21:45:112
5920992840,283cyclictest13829-21kworker/u16:1+efi_rts_wq22:00:132
5919992840,283cyclictest858-21kworker/u16:0+efi_rts_wq00:16:091
5919992840,283cyclictest13829-21kworker/u16:1+efi_rts_wq22:44:591
5919992840,282cyclictest3940-21kworker/u16:3+efi_rts_wq22:55:101
5918992840,283cyclictest13057-21kworker/u16:1+efi_rts_wq00:20:140
5921992830,282cyclictest24289-21kworker/u16:3+efi_rts_wq19:20:113
5921992830,282cyclictest13829-21kworker/u16:1+efi_rts_wq21:29:453
5920992820,281cyclictest31709-21kworker/u16:2+efi_rts_wq21:55:112
5918992820,281cyclictest13829-21kworker/u16:1+efi_rts_wq22:09:530
5918992810,280cyclictest24289-21kworker/u16:3+efi_rts_wq20:40:140
5921992800,279cyclictest13057-21kworker/u16:1+efi_rts_wq23:55:123
5919992800,279cyclictest24289-21kworker/u16:3+efi_rts_wq19:10:131
5921992790,278cyclictest13829-21kworker/u16:1+efi_rts_wq21:50:133
5918992790,278cyclictest858-21kworker/u16:0+efi_rts_wq23:00:120
5918992790,278cyclictest13829-21kworker/u16:1+efi_rts_wq21:15:130
5921992760,275cyclictest13829-21kworker/u16:1+efi_rts_wq22:40:123
5920992760,275cyclictest24289-21kworker/u16:3+efi_rts_wq19:45:112
5919992760,275cyclictest24289-21kworker/u16:3+efi_rts_wq19:15:011
5919992750,274cyclictest13057-21kworker/u16:1+efi_rts_wq00:11:081
5921992730,272cyclictest24289-21kworker/u16:3+efi_rts_wq19:15:143
5920992730,272cyclictest24289-21kworker/u16:3+efi_rts_wq19:50:132
5921992720,271cyclictest13057-21kworker/u16:1+efi_rts_wq23:10:143
5919992720,271cyclictest31709-21kworker/u16:2+efi_rts_wq21:30:171
5920992690,266cyclictest858-21kworker/u16:0+efi_rts_wq23:05:132
5919992690,267cyclictest858-21kworker/u16:0+efi_rts_wq23:00:121
5920992680,267cyclictest31709-21kworker/u16:2+efi_rts_wq19:35:112
5918992680,267cyclictest24289-21kworker/u16:3+efi_rts_wq19:34:240
5919992670,266cyclictest31709-21kworker/u16:2+efi_rts_wq19:29:221
5918992670,266cyclictest13057-21kworker/u16:1+efi_rts_wq23:50:130
5918992670,266cyclictest13057-21kworker/u16:1+efi_rts_wq23:50:120
5919992660,265cyclictest31709-21kworker/u16:2+efi_rts_wq19:55:121
5920992620,261cyclictest31709-21kworker/u16:2+efi_rts_wq19:44:252
5919992600,259cyclictest13057-21kworker/u16:1+efi_rts_wq23:15:131
5918992590,258cyclictest31709-21kworker/u16:2+efi_rts_wq20:45:110
5921992570,256cyclictest858-21kworker/u16:0+efi_rts_wq00:15:123
5921992560,255cyclictest31709-21kworker/u16:2+efi_rts_wq20:15:153
5920992560,255cyclictest31709-21kworker/u16:2+efi_rts_wq20:05:132
5921992550,254cyclictest858-21kworker/u16:0+efi_rts_wq23:45:123
5921992550,254cyclictest31709-21kworker/u16:2+efi_rts_wq21:05:113
5920992550,254cyclictest13829-21kworker/u16:1+efi_rts_wq22:20:142
5918992550,254cyclictest24289-21kworker/u16:3+efi_rts_wq20:04:290
5921992540,253cyclictest858-21kworker/u16:0+efi_rts_wq00:05:133
5921992530,252cyclictest31709-21kworker/u16:2+efi_rts_wq21:40:113
5921992530,252cyclictest13829-21kworker/u16:1+efi_rts_wq22:10:133
5920992520,251cyclictest31709-21kworker/u16:2+efi_rts_wq21:40:122
5919992520,251cyclictest13057-21kworker/u16:1+efi_rts_wq23:35:071
5918992520,251cyclictest31709-21kworker/u16:2+efi_rts_wq22:15:130
5918992520,251cyclictest13057-21kworker/u16:1+efi_rts_wq23:20:120
5918992510,250cyclictest13057-21kworker/u16:1+efi_rts_wq00:30:130
5920992500,248cyclictest858-21kworker/u16:0+efi_rts_wq22:50:132
5918992500,248cyclictest858-21kworker/u16:0+efi_rts_wq00:00:130
5921992480,247cyclictest31709-21kworker/u16:2+efi_rts_wq22:29:573
5921992480,247cyclictest13057-21kworker/u16:1+efi_rts_wq23:50:133
5921992480,247cyclictest13057-21kworker/u16:1+efi_rts_wq23:50:123
5921992470,246cyclictest13829-21kworker/u16:1+efi_rts_wq21:00:113
5919992470,246cyclictest31709-21kworker/u16:2+efi_rts_wq21:05:111
5921992460,245cyclictest13829-21kworker/u16:1+efi_rts_wq22:19:553
5918992450,243cyclictest3940-21kworker/u16:3+efi_rts_wq22:55:000
5921992440,243cyclictest24289-21kworker/u16:3+efi_rts_wq19:40:113
5920992430,242cyclictest31709-21kworker/u16:2+efi_rts_wq19:25:092
5919992430,242cyclictest13829-21kworker/u16:1+efi_rts_wq20:50:141
5919992420,241cyclictest31709-21kworker/u16:2+efi_rts_wq22:39:581
5919992420,241cyclictest31709-21kworker/u16:2+efi_rts_wq19:30:131
5921992410,240cyclictest13057-21kworker/u16:1+efi_rts_wq00:36:133
5918992410,240cyclictest24289-21kworker/u16:3+efi_rts_wq20:14:310
5919992400,239cyclictest13829-21kworker/u16:1+efi_rts_wq22:05:131
5920992370,236cyclictest13057-21kworker/u16:1+efi_rts_wq23:20:132
5918992370,235cyclictest31709-21kworker/u16:2+efi_rts_wq22:35:120
5918992370,235cyclictest31709-21kworker/u16:2+efi_rts_wq20:30:140
5920992340,233cyclictest13829-21kworker/u16:1+efi_rts_wq21:14:432
5919992340,233cyclictest858-21kworker/u16:0+efi_rts_wq23:25:111
5919992340,233cyclictest13829-21kworker/u16:1+efi_rts_wq21:35:121
5919992340,233cyclictest13829-21kworker/u16:1+efi_rts_wq21:10:121
5920992320,230cyclictest31709-21kworker/u16:2+efi_rts_wq20:45:112
5918992290,228cyclictest31709-21kworker/u16:2+efi_rts_wq21:44:480
5920992270,226cyclictest13057-21kworker/u16:1+efi_rts_wq23:56:042
5919992270,226cyclictest31709-21kworker/u16:2+efi_rts_wq20:25:111
5919992270,226cyclictest31709-21kworker/u16:2+efi_rts_wq20:19:311
5921992260,225cyclictest13057-21kworker/u16:1+efi_rts_wq23:30:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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