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2026-07-10 - 12:46

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 Fri Jul 10, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217332323315,5sleep10-21swapper/119:06:471
218372319305,5sleep00-21swapper/019:08:070
219012318304,4sleep20-21swapper/219:08:562
217152315307,5sleep30-21swapper/319:06:333
22359992990,298cyclictest17350-21kworker/u16:1+efi_rts_wq22:40:140
22359992990,298cyclictest17350-21kworker/u16:1+efi_rts_wq21:30:120
22364992980,297cyclictest17350-21kworker/u16:1+efi_rts_wq20:39:553
22364992970,296cyclictest17350-21kworker/u16:1+efi_rts_wq00:35:133
22361992970,296cyclictest17350-21kworker/u16:1+efi_rts_wq20:09:501
22364992960,295cyclictest21300-21kworker/u16:0+efi_rts_wq00:00:143
22363992950,294cyclictest21300-21kworker/u16:0+efi_rts_wq21:20:142
22359992950,292cyclictest17350-21kworker/u16:1+efi_rts_wq21:40:130
22364992940,293cyclictest21300-21kworker/u16:0+efi_rts_wq21:00:123
22364992930,292cyclictest17350-21kworker/u16:1+efi_rts_wq21:30:113
22359992930,292cyclictest21300-21kworker/u16:0+efi_rts_wq00:25:150
22363992920,291cyclictest21300-21kworker/u16:0+efi_rts_wq19:55:122
22364992910,290cyclictest17350-21kworker/u16:1+efi_rts_wq23:40:293
22364992910,290cyclictest17350-21kworker/u16:1+efi_rts_wq22:20:143
22359992910,290cyclictest21300-21kworker/u16:0+efi_rts_wq23:55:140
22359992900,289cyclictest17350-21kworker/u16:1+efi_rts_wq23:25:130
22359992900,289cyclictest17350-21kworker/u16:1+efi_rts_wq23:15:140
22359992890,288cyclictest21300-21kworker/u16:0+efi_rts_wq23:20:120
22361992880,287cyclictest17350-21kworker/u16:1+efi_rts_wq20:00:131
22363992870,286cyclictest21300-21kworker/u16:0+efi_rts_wq20:10:112
22364992850,284cyclictest17350-21kworker/u16:1+efi_rts_wq20:30:123
22363992850,284cyclictest21300-21kworker/u16:0+efi_rts_wq22:45:132
22363992850,284cyclictest17350-21kworker/u16:1+efi_rts_wq19:25:132
22359992840,283cyclictest17350-21kworker/u16:1+efi_rts_wq21:25:150
22359992840,283cyclictest17350-21kworker/u16:1+efi_rts_wq21:05:140
22361992820,281cyclictest21300-21kworker/u16:0+efi_rts_wq00:00:131
22359992820,281cyclictest21300-21kworker/u16:0+efi_rts_wq20:10:120
22364992810,280cyclictest21300-21kworker/u16:0+efi_rts_wq22:35:163
22363992800,279cyclictest21300-21kworker/u16:0+efi_rts_wq19:50:122
22361992790,278cyclictest21300-21kworker/u16:0+efi_rts_wq21:35:121
22361992790,278cyclictest17350-21kworker/u16:1+efi_rts_wq20:55:121
22361992780,277cyclictest21300-21kworker/u16:0+efi_rts_wq20:34:541
22359992780,277cyclictest21300-21kworker/u16:0+efi_rts_wq21:50:130
22361992770,276cyclictest21300-21kworker/u16:0+efi_rts_wq23:45:131
22359992770,276cyclictest21300-21kworker/u16:0+efi_rts_wq19:45:130
22359992770,276cyclictest21300-21kworker/u16:0+efi_rts_wq00:15:350
22364992760,275cyclictest21300-21kworker/u16:0+efi_rts_wq23:20:243
22363992760,275cyclictest17350-21kworker/u16:1+efi_rts_wq22:00:122
22361992760,275cyclictest17350-21kworker/u16:1+efi_rts_wq20:44:561
22361992750,274cyclictest17350-21kworker/u16:1+efi_rts_wq20:25:121
22363992730,272cyclictest17350-21kworker/u16:1+efi_rts_wq19:20:122
22363992710,270cyclictest21300-21kworker/u16:0+efi_rts_wq20:20:112
22364992700,269cyclictest17350-21kworker/u16:1+efi_rts_wq21:35:063
22363992700,269cyclictest21300-21kworker/u16:0+efi_rts_wq22:55:152
22361992700,269cyclictest21300-21kworker/u16:0+efi_rts_wq21:50:131
22363992690,268cyclictest21300-21kworker/u16:0+efi_rts_wq00:00:312
22359992690,268cyclictest21300-21kworker/u16:0+efi_rts_wq00:10:330
22361992680,267cyclictest17350-21kworker/u16:1+efi_rts_wq00:15:121
22363992660,265cyclictest21300-21kworker/u16:0+efi_rts_wq21:45:132
22363992660,265cyclictest21300-21kworker/u16:0+efi_rts_wq21:45:122
22363992650,264cyclictest21300-21kworker/u16:0+efi_rts_wq20:50:122
22361992640,263cyclictest21300-21kworker/u16:0+efi_rts_wq23:00:141
22364992630,262cyclictest21300-21kworker/u16:0+efi_rts_wq23:35:133
22363992630,262cyclictest21300-21kworker/u16:0+efi_rts_wq00:10:132
22359992630,261cyclictest17350-21kworker/u16:1+efi_rts_wq19:35:120
22361992620,261cyclictest17350-21kworker/u16:1+efi_rts_wq23:30:121
22363992600,259cyclictest17350-21kworker/u16:1+efi_rts_wq22:40:132
22361992590,256cyclictest21300-21kworker/u16:0+efi_rts_wq20:15:111
22359992590,258cyclictest17350-21kworker/u16:1+efi_rts_wq20:30:120
22364992580,257cyclictest21300-21kworker/u16:0+efi_rts_wq21:10:113
22364992580,257cyclictest21300-21kworker/u16:0+efi_rts_wq20:40:113
22363992580,257cyclictest21300-21kworker/u16:0+efi_rts_wq19:15:002
22361992580,257cyclictest21300-21kworker/u16:0+efi_rts_wq23:40:131
22361992570,256cyclictest17350-21kworker/u16:1+efi_rts_wq23:10:121
22361992570,256cyclictest17350-21kworker/u16:1+efi_rts_wq22:05:121
22361992560,255cyclictest21300-21kworker/u16:0+efi_rts_wq23:20:121
22363992530,249cyclictest17350-21kworker/u16:1+efi_rts_wq23:50:132
22359992500,249cyclictest21300-21kworker/u16:0+efi_rts_wq20:05:120
22363992490,248cyclictest21300-21kworker/u16:0+efi_rts_wq19:40:122
22361992490,248cyclictest21300-21kworker/u16:0+efi_rts_wq21:40:061
22364992480,247cyclictest21300-21kworker/u16:0+efi_rts_wq22:55:153
22363992480,247cyclictest21300-21kworker/u16:0+efi_rts_wq23:35:132
22363992480,247cyclictest17350-21kworker/u16:1+efi_rts_wq22:10:122
22359992470,246cyclictest21300-21kworker/u16:0+efi_rts_wq23:30:250
22364992450,244cyclictest17350-21kworker/u16:1+efi_rts_wq19:35:133
22361992450,244cyclictest21300-21kworker/u16:0+efi_rts_wq22:50:131
22359992450,244cyclictest17350-21kworker/u16:1+efi_rts_wq19:44:470
22359992440,243cyclictest17350-21kworker/u16:1+efi_rts_wq20:35:120
22363992430,242cyclictest21300-21kworker/u16:0+efi_rts_wq19:10:142
22361992420,241cyclictest17350-21kworker/u16:1+efi_rts_wq22:10:111
22364992410,240cyclictest21300-21kworker/u16:0+efi_rts_wq19:15:113
22359992400,239cyclictest17350-21kworker/u16:1+efi_rts_wq21:45:070
22359992400,239cyclictest17350-21kworker/u16:1+efi_rts_wq21:45:070
22364992390,238cyclictest21300-21kworker/u16:0+efi_rts_wq00:20:143
22363992380,237cyclictest21300-21kworker/u16:0+efi_rts_wq22:30:142
22363992370,236cyclictest21300-21kworker/u16:0+efi_rts_wq20:15:122
22363992360,235cyclictest17350-21kworker/u16:1+efi_rts_wq23:10:122
22364992350,234cyclictest21300-21kworker/u16:0+efi_rts_wq23:05:213
22364992350,234cyclictest21300-21kworker/u16:0+efi_rts_wq19:34:463
22361992350,234cyclictest21300-21kworker/u16:0+efi_rts_wq22:45:181
22361992350,234cyclictest21300-21kworker/u16:0+efi_rts_wq19:10:131
22364992340,233cyclictest21300-21kworker/u16:0+efi_rts_wq21:45:133
22364992340,233cyclictest21300-21kworker/u16:0+efi_rts_wq21:45:123
22363992340,233cyclictest17350-21kworker/u16:1+efi_rts_wq20:55:122
22359992330,232cyclictest21300-21kworker/u16:0+efi_rts_wq20:50:130
22364992320,231cyclictest17350-21kworker/u16:1+efi_rts_wq21:40:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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