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2026-07-02 - 07:15

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 02, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30422318311,4sleep10-21swapper/119:09:281
27212318310,5sleep30-21swapper/319:05:213
30812316308,5sleep20-21swapper/219:09:572
30212316309,5sleep00-21swapper/019:09:110
3351993080,305cyclictest15687-21kworker/u16:2+efi_rts_wq20:10:113
3350992980,297cyclictest24539-21kworker/u16:3+efi_rts_wq00:30:112
3349992960,295cyclictest15687-21kworker/u16:2+efi_rts_wq19:25:131
3345992960,295cyclictest24540-21kworker/u16:4+efi_rts_wq22:40:130
3351992950,294cyclictest13596-21kworker/u16:0+efi_rts_wq20:20:113
3351992940,293cyclictest15687-21kworker/u16:2+efi_rts_wq19:20:123
3349992940,293cyclictest15687-21kworker/u16:2+efi_rts_wq21:19:091
3351992920,291cyclictest15687-21kworker/u16:2+efi_rts_wq21:50:133
3351992920,291cyclictest13596-21kworker/u16:0+efi_rts_wq20:00:133
3349992920,291cyclictest15687-21kworker/u16:2+efi_rts_wq22:10:121
3349992920,291cyclictest13596-21kworker/u16:0+efi_rts_wq22:09:191
3351992910,290cyclictest23936-21kworker/u16:0+efi_rts_wq00:26:223
3351992910,290cyclictest15687-21kworker/u16:2+efi_rts_wq20:08:563
3350992900,289cyclictest15687-21kworker/u16:2+efi_rts_wq20:30:122
3349992900,289cyclictest13596-21kworker/u16:0+efi_rts_wq21:30:121
3351992890,288cyclictest15687-21kworker/u16:2+efi_rts_wq22:00:103
3345992880,287cyclictest24539-21kworker/u16:3+efi_rts_wq22:55:120
3345992870,286cyclictest15687-21kworker/u16:2+efi_rts_wq19:20:110
3351992860,285cyclictest15687-21kworker/u16:2+efi_rts_wq21:40:123
3351992850,284cyclictest15687-21kworker/u16:2+efi_rts_wq20:59:033
3350992850,284cyclictest13596-21kworker/u16:0+efi_rts_wq19:15:132
3349992840,283cyclictest13596-21kworker/u16:0+efi_rts_wq21:45:131
3351992820,281cyclictest15687-21kworker/u16:2+efi_rts_wq21:09:063
3351992820,281cyclictest11795-21kworker/u16:1+efi_rts_wq23:19:323
3351992820,280cyclictest24539-21kworker/u16:3+efi_rts_wq23:20:143
3349992820,281cyclictest13596-21kworker/u16:0+efi_rts_wq19:10:131
3345992820,281cyclictest24539-21kworker/u16:3+efi_rts_wq23:25:120
3349992810,280cyclictest24539-21kworker/u16:3+efi_rts_wq22:45:111
3345992810,280cyclictest24539-21kworker/u16:3+efi_rts_wq23:10:120
3349992800,279cyclictest15687-21kworker/u16:2+efi_rts_wq20:55:131
3345992800,278cyclictest13596-21kworker/u16:0+efi_rts_wq21:55:130
3349992790,278cyclictest15687-21kworker/u16:2+efi_rts_wq19:45:131
3345992790,278cyclictest15687-21kworker/u16:2+efi_rts_wq22:00:110
3349992770,276cyclictest15687-21kworker/u16:2+efi_rts_wq21:25:131
3350992740,273cyclictest13596-21kworker/u16:0+efi_rts_wq21:24:102
3350992740,273cyclictest13596-21kworker/u16:0+efi_rts_wq19:50:122
3349992710,270cyclictest13596-21kworker/u16:0+efi_rts_wq20:40:131
3345992710,270cyclictest24539-21kworker/u16:3+efi_rts_wq23:00:150
3351992700,269cyclictest13596-21kworker/u16:0+efi_rts_wq22:15:123
3349992690,268cyclictest23936-21kworker/u16:0+efi_rts_wq23:55:131
3345992690,268cyclictest23936-21kworker/u16:0+efi_rts_wq00:35:120
3345992690,268cyclictest23936-21kworker/u16:0+efi_rts_wq00:35:120
3345992690,268cyclictest15687-21kworker/u16:2+efi_rts_wq21:40:130
3345992690,268cyclictest13596-21kworker/u16:0+efi_rts_wq20:15:130
3350992680,267cyclictest23936-21kworker/u16:0+efi_rts_wq00:15:112
3349992680,267cyclictest24539-21kworker/u16:3+efi_rts_wq00:20:121
3349992650,264cyclictest23936-21kworker/u16:0+efi_rts_wq00:35:121
3349992650,264cyclictest23936-21kworker/u16:0+efi_rts_wq00:35:121
3345992650,264cyclictest15687-21kworker/u16:2+efi_rts_wq22:24:220
3350992640,263cyclictest15687-21kworker/u16:2+efi_rts_wq19:40:122
3349992630,262cyclictest13596-21kworker/u16:0+efi_rts_wq19:55:131
3350992620,261cyclictest13596-21kworker/u16:0+efi_rts_wq20:50:132
3350992620,261cyclictest11795-21kworker/u16:1+efi_rts_wq23:30:122
3349992620,261cyclictest15687-21kworker/u16:2+efi_rts_wq20:18:581
3351992610,259cyclictest23936-21kworker/u16:0+efi_rts_wq00:05:173
3349992610,259cyclictest13596-21kworker/u16:0+efi_rts_wq20:05:121
3345992610,260cyclictest24539-21kworker/u16:3+efi_rts_wq22:45:110
3350992600,259cyclictest13596-21kworker/u16:0+efi_rts_wq21:45:132
3350992590,258cyclictest23936-21kworker/u16:0+efi_rts_wq00:25:132
3349992580,257cyclictest23936-21kworker/u16:0+efi_rts_wq23:40:111
3345992580,257cyclictest13596-21kworker/u16:0+efi_rts_wq19:50:130
3349992560,255cyclictest13596-21kworker/u16:0+efi_rts_wq19:35:131
3345992560,255cyclictest13596-21kworker/u16:0+efi_rts_wq20:54:030
3351992530,252cyclictest24539-21kworker/u16:3+efi_rts_wq23:10:123
3349992520,251cyclictest24539-21kworker/u16:3+efi_rts_wq00:10:131
3349992510,249cyclictest21577-21kworker/u16:2+efi_rts_wq23:35:131
3351992490,248cyclictest15687-21kworker/u16:2+efi_rts_wq20:35:133
3350992480,247cyclictest24539-21kworker/u16:3+efi_rts_wq23:05:122
3350992460,245cyclictest23936-21kworker/u16:0+efi_rts_wq00:01:152
3349992460,245cyclictest15687-21kworker/u16:2+efi_rts_wq20:13:571
3350992450,243cyclictest24539-21kworker/u16:3+efi_rts_wq22:55:102
3351992440,243cyclictest23936-21kworker/u16:0+efi_rts_wq23:39:373
3349992440,243cyclictest24539-21kworker/u16:3+efi_rts_wq23:50:101
3345992440,243cyclictest13596-21kworker/u16:0+efi_rts_wq19:10:120
3345992430,242cyclictest13596-21kworker/u16:0+efi_rts_wq19:15:020
3345992420,241cyclictest15687-21kworker/u16:2+efi_rts_wq21:50:130
3351992410,240cyclictest13596-21kworker/u16:0+efi_rts_wq19:18:453
3350992410,238cyclictest15687-21kworker/u16:2+efi_rts_wq21:35:142
3345992410,240cyclictest15687-21kworker/u16:2+efi_rts_wq22:10:120
3350992400,239cyclictest13596-21kworker/u16:0+efi_rts_wq22:05:122
3351992390,238cyclictest15687-21kworker/u16:2+efi_rts_wq21:15:133
3350992390,238cyclictest13596-21kworker/u16:0+efi_rts_wq19:23:462
3350992380,237cyclictest15687-21kworker/u16:2+efi_rts_wq20:55:122
3351992370,236cyclictest24540-21kworker/u16:4+efi_rts_wq22:50:133
3350992370,236cyclictest24539-21kworker/u16:3+efi_rts_wq23:15:102
3351992330,232cyclictest15687-21kworker/u16:2+efi_rts_wq19:25:133
3349992330,232cyclictest15687-21kworker/u16:2+efi_rts_wq20:30:121
3350992320,231cyclictest15687-21kworker/u16:2+efi_rts_wq20:10:122
3349992320,231cyclictest15687-21kworker/u16:2+efi_rts_wq21:39:131
3345992320,231cyclictest15687-21kworker/u16:2+efi_rts_wq20:35:110
3350992300,228cyclictest24539-21kworker/u16:3+efi_rts_wq00:20:122
3345992300,229cyclictest15687-21kworker/u16:2+efi_rts_wq20:03:550
3349992260,225cyclictest13596-21kworker/u16:0+efi_rts_wq22:30:121
3349992260,224cyclictest23936-21kworker/u16:0+efi_rts_wq00:00:111
3345992260,225cyclictest15687-21kworker/u16:2+efi_rts_wq21:25:130
3351992250,223cyclictest24539-21kworker/u16:3+efi_rts_wq23:51:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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