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2026-04-06 - 09:39

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 Mon Apr 06, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89562317303,5sleep20-21swapper/219:05:042
108452317311,4sleep10-21swapper/119:07:441
108622316309,5sleep30-21swapper/319:07:583
11288993150,314cyclictest25450-21kworker/u16:0+efi_rts_wq19:40:113
108692314307,5sleep00-21swapper/019:08:030
11287993110,310cyclictest27479-21kworker/u16:3+efi_rts_wq22:05:132
11288993090,307cyclictest20963-21kworker/u16:3+efi_rts_wq00:00:123
11287993060,305cyclictest14252-21kworker/u16:3+efi_rts_wq20:25:132
11285993060,305cyclictest10220-21kworker/u16:1+efi_rts_wq00:20:110
11288993050,304cyclictest5791-21kworker/u16:2+efi_rts_wq00:35:153
11287993040,303cyclictest24893-21kworker/u16:1+efi_rts_wq19:15:132
11286993040,303cyclictest25450-21kworker/u16:0+efi_rts_wq20:15:131
11285993040,303cyclictest6360-21kworker/u16:0+efi_rts_wq19:30:120
11288993030,301cyclictest27479-21kworker/u16:3+efi_rts_wq22:55:113
11288993010,300cyclictest6360-21kworker/u16:0+efi_rts_wq19:25:133
11286993010,300cyclictest27114-21kworker/u16:2+efi_rts_wq21:25:141
11285993000,299cyclictest24893-21kworker/u16:1+efi_rts_wq19:10:120
11288992990,298cyclictest27479-21kworker/u16:3+efi_rts_wq22:15:133
11287992980,297cyclictest502-21kworker/u16:0+efi_rts_wq00:30:122
11288992970,296cyclictest6029-21kworker/u16:0+efi_rts_wq21:40:123
11287992970,296cyclictest3725-21kworker/u16:3+efi_rts_wq21:20:132
11287992970,295cyclictest13523-21kworker/u16:2+efi_rts_wq22:45:102
11286992970,296cyclictest6029-21kworker/u16:0+efi_rts_wq21:15:151
11288992960,295cyclictest20963-21kworker/u16:3+efi_rts_wq23:55:123
11286992960,295cyclictest24893-21kworker/u16:1+efi_rts_wq19:10:111
11286992960,295cyclictest14252-21kworker/u16:3+efi_rts_wq20:25:121
11285992960,295cyclictest5972-21kworker/u16:2+efi_rts_wq23:30:120
11285992960,295cyclictest27114-21kworker/u16:2+efi_rts_wq21:50:120
11288992950,292cyclictest25181-21kworker/u16:1+efi_rts_wq22:00:153
11286992950,294cyclictest6029-21kworker/u16:0+efi_rts_wq23:20:041
11285992950,294cyclictest13523-21kworker/u16:2+efi_rts_wq22:45:100
11285992950,294cyclictest10220-21kworker/u16:1+efi_rts_wq00:25:130
11288992940,293cyclictest6029-21kworker/u16:0+efi_rts_wq23:20:123
11286992940,293cyclictest27479-21kworker/u16:3+efi_rts_wq22:50:121
11285992930,292cyclictest3725-21kworker/u16:3+efi_rts_wq21:39:450
11288992920,291cyclictest27114-21kworker/u16:2+efi_rts_wq20:50:143
11287992910,290cyclictest25450-21kworker/u16:0+efi_rts_wq20:05:122
11286992910,290cyclictest5972-21kworker/u16:2+efi_rts_wq23:30:061
11286992910,290cyclictest15880-21kworker/u16:0+efi_rts_wq00:05:121
11285992910,290cyclictest27114-21kworker/u16:2+efi_rts_wq20:50:120
11285992910,290cyclictest20963-21kworker/u16:3+efi_rts_wq00:11:060
11286992900,289cyclictest27479-21kworker/u16:3+efi_rts_wq22:20:131
11285992890,288cyclictest5972-21kworker/u16:2+efi_rts_wq23:35:130
11285992890,288cyclictest21626-21kworker/u16:2+efi_rts_wq20:40:110
11288992880,287cyclictest6029-21kworker/u16:0+efi_rts_wq22:10:123
11288992880,285cyclictest502-21kworker/u16:0+efi_rts_wq00:30:123
11286992870,286cyclictest502-21kworker/u16:0+efi_rts_wq00:20:111
11287992860,285cyclictest28116-21kworker/u16:1+efi_rts_wq19:55:112
11286992850,284cyclictest21626-21kworker/u16:2+efi_rts_wq19:20:121
11288992830,282cyclictest27479-21kworker/u16:3+efi_rts_wq22:30:123
11288992830,282cyclictest13523-21kworker/u16:2+efi_rts_wq22:40:123
11288992830,282cyclictest12804-21kworker/u16:3+efi_rts_wq23:40:083
11285992830,282cyclictest19674-21kworker/u16:1+efi_rts_wq20:35:140
11288992810,280cyclictest21626-21kworker/u16:2+efi_rts_wq20:10:133
11286992810,280cyclictest8063-21kworker/u16:1+efi_rts_wq20:20:121
11286992790,278cyclictest25181-21kworker/u16:1+efi_rts_wq22:00:151
11286992780,277cyclictest20963-21kworker/u16:3+efi_rts_wq00:15:121
11285992740,273cyclictest6029-21kworker/u16:0+efi_rts_wq22:35:120
11287992720,271cyclictest25181-21kworker/u16:1+efi_rts_wq22:00:152
11286992720,271cyclictest6415-21kworker/u16:2+efi_rts_wq22:25:111
11288992710,270cyclictest19674-21kworker/u16:1+efi_rts_wq20:45:113
11285992710,270cyclictest6029-21kworker/u16:0+efi_rts_wq23:05:120
11288992700,269cyclictest6029-21kworker/u16:0+efi_rts_wq21:15:143
11286992700,269cyclictest6029-21kworker/u16:0+efi_rts_wq23:15:111
11285992700,269cyclictest27114-21kworker/u16:2+efi_rts_wq21:29:430
11286992680,267cyclictest25450-21kworker/u16:0+efi_rts_wq20:00:121
11287992660,265cyclictest27479-21kworker/u16:3+efi_rts_wq23:25:122
11285992660,265cyclictest27479-21kworker/u16:3+efi_rts_wq22:20:130
11285992660,265cyclictest25181-21kworker/u16:1+efi_rts_wq21:55:100
11286992650,264cyclictest25450-21kworker/u16:0+efi_rts_wq19:39:231
11286992650,264cyclictest25450-21kworker/u16:0+efi_rts_wq19:39:221
11288992640,263cyclictest19674-21kworker/u16:1+efi_rts_wq20:44:353
11287992610,260cyclictest15880-21kworker/u16:0+efi_rts_wq00:10:152
11286992610,260cyclictest27479-21kworker/u16:3+efi_rts_wq22:15:121
11286992610,260cyclictest13523-21kworker/u16:2+efi_rts_wq22:49:581
11285992610,260cyclictest21626-21kworker/u16:2+efi_rts_wq19:35:130
11285992610,260cyclictest21626-21kworker/u16:2+efi_rts_wq19:35:120
11288992590,258cyclictest25450-21kworker/u16:0+efi_rts_wq20:05:123
11285992570,256cyclictest6029-21kworker/u16:0+efi_rts_wq22:10:130
11285992570,256cyclictest19674-21kworker/u16:1+efi_rts_wq20:45:120
11285992520,251cyclictest1290-21kworker/u16:1+efi_rts_wq21:10:120
11285992510,250cyclictest6029-21kworker/u16:0+efi_rts_wq23:20:110
11285992510,250cyclictest13523-21kworker/u16:2+efi_rts_wq22:44:580
11287992500,249cyclictest10220-21kworker/u16:1+efi_rts_wq00:25:132
11286992500,249cyclictest5972-21kworker/u16:2+efi_rts_wq23:45:131
11286992490,248cyclictest21626-21kworker/u16:2+efi_rts_wq19:19:181
11287992460,245cyclictest20963-21kworker/u16:3+efi_rts_wq00:15:122
11288992450,244cyclictest27114-21kworker/u16:2+efi_rts_wq21:25:133
11287992450,244cyclictest21626-21kworker/u16:2+efi_rts_wq20:40:122
11286992450,244cyclictest24798-21kworker/u16:0+efi_rts_wq21:05:131
11285992450,244cyclictest27479-21kworker/u16:3+efi_rts_wq23:25:130
11287992440,243cyclictest27114-21kworker/u16:2+efi_rts_wq21:00:132
11288992430,242cyclictest6029-21kworker/u16:0+efi_rts_wq21:14:403
11286992420,241cyclictest6029-21kworker/u16:0+efi_rts_wq21:49:471
11286992420,241cyclictest25450-21kworker/u16:0+efi_rts_wq19:40:121
11288992410,240cyclictest25450-21kworker/u16:0+efi_rts_wq20:00:133
11287992410,240cyclictest28116-21kworker/u16:1+efi_rts_wq19:50:122
11285992410,240cyclictest6415-21kworker/u16:2+efi_rts_wq22:25:110
11287992390,238cyclictest13523-21kworker/u16:2+efi_rts_wq22:40:132
11287992370,236cyclictest3725-21kworker/u16:3+efi_rts_wq21:45:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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