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2026-04-22 - 12:50

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 Wed Apr 22, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271362333310,5sleep30-21swapper/319:09:453
269352323315,5sleep20-21swapper/219:07:082
269692319311,5sleep10-21swapper/119:07:351
269212318304,5sleep00-21swapper/019:06:580
27422993110,309cyclictest29739-21kworker/u16:3+efi_rts_wq22:50:100
27424993080,307cyclictest27089-21kworker/u16:3+efi_rts_wq20:30:132
27425993070,305cyclictest29739-21kworker/u16:3+efi_rts_wq23:45:133
27423993070,306cyclictest30743-21kworker/u16:0+efi_rts_wq22:05:431
27423993070,306cyclictest27089-21kworker/u16:3+efi_rts_wq19:50:131
27422993070,306cyclictest27089-21kworker/u16:3+efi_rts_wq21:10:150
27422993050,304cyclictest30743-21kworker/u16:0+efi_rts_wq22:30:120
27423993040,303cyclictest5737-21kworker/u16:2+efi_rts_wq20:15:131
27425993030,302cyclictest26502-21kworker/u16:1+efi_rts_wq00:20:133
27423993030,302cyclictest27089-21kworker/u16:3+efi_rts_wq21:40:121
27422993030,301cyclictest26502-21kworker/u16:1+efi_rts_wq23:25:130
27424993020,301cyclictest26502-21kworker/u16:1+efi_rts_wq23:00:122
27425993010,300cyclictest29739-21kworker/u16:3+efi_rts_wq23:26:013
27425993000,299cyclictest27089-21kworker/u16:3+efi_rts_wq21:30:123
27425993000,299cyclictest26502-21kworker/u16:1+efi_rts_wq23:15:133
27423993000,299cyclictest29739-21kworker/u16:3+efi_rts_wq22:55:141
27424992990,298cyclictest26502-21kworker/u16:1+efi_rts_wq22:40:132
27425992980,297cyclictest26502-21kworker/u16:1+efi_rts_wq00:10:133
27423992980,295cyclictest26502-21kworker/u16:1+efi_rts_wq23:10:131
27424992970,296cyclictest29739-21kworker/u16:3+efi_rts_wq22:45:512
27424992970,296cyclictest26502-21kworker/u16:1+efi_rts_wq23:05:562
27422992970,296cyclictest27089-21kworker/u16:3+efi_rts_wq20:40:240
27422992970,296cyclictest27089-21kworker/u16:3+efi_rts_wq20:25:130
27423992960,295cyclictest27089-21kworker/u16:3+efi_rts_wq21:00:271
27422992960,293cyclictest5737-21kworker/u16:2+efi_rts_wq19:20:120
27424992950,294cyclictest27089-21kworker/u16:3+efi_rts_wq21:25:132
27422992940,293cyclictest5737-21kworker/u16:2+efi_rts_wq21:30:330
27424992930,292cyclictest5737-21kworker/u16:2+efi_rts_wq22:20:132
27424992920,290cyclictest5737-21kworker/u16:2+efi_rts_wq20:15:142
27422992920,291cyclictest26502-21kworker/u16:1+efi_rts_wq23:05:140
27424992910,290cyclictest27089-21kworker/u16:3+efi_rts_wq20:40:122
27425992900,289cyclictest26502-21kworker/u16:1+efi_rts_wq23:50:113
27423992900,289cyclictest27089-21kworker/u16:3+efi_rts_wq21:30:121
27422992900,289cyclictest30743-21kworker/u16:0+efi_rts_wq22:25:140
27424992890,288cyclictest5737-21kworker/u16:2+efi_rts_wq21:50:402
27422992890,288cyclictest26502-21kworker/u16:1+efi_rts_wq22:35:130
27424992880,287cyclictest27089-21kworker/u16:3+efi_rts_wq20:05:152
27423992880,287cyclictest27089-21kworker/u16:3+efi_rts_wq20:45:241
27425992870,286cyclictest27089-21kworker/u16:3+efi_rts_wq19:15:143
27424992870,286cyclictest5737-21kworker/u16:2+efi_rts_wq19:50:052
27422992870,286cyclictest5737-21kworker/u16:2+efi_rts_wq19:35:130
27422992870,286cyclictest27089-21kworker/u16:3+efi_rts_wq22:00:130
27425992860,285cyclictest27089-21kworker/u16:3+efi_rts_wq20:45:123
27423992860,285cyclictest1902-21kworker/u16:0+efi_rts_wq00:25:121
27423992850,284cyclictest27089-21kworker/u16:3+efi_rts_wq20:25:131
27424992840,283cyclictest5737-21kworker/u16:2+efi_rts_wq20:00:132
27425992820,281cyclictest5737-21kworker/u16:2+efi_rts_wq19:25:123
27424992810,280cyclictest1902-21kworker/u16:0+efi_rts_wq00:26:112
27423992810,280cyclictest27089-21kworker/u16:3+efi_rts_wq20:35:201
27422992810,279cyclictest29739-21kworker/u16:3+efi_rts_wq22:55:140
27423992790,277cyclictest26502-21kworker/u16:1+efi_rts_wq23:35:131
27423992790,277cyclictest26502-21kworker/u16:1+efi_rts_wq23:30:131
27425992780,277cyclictest29739-21kworker/u16:3+efi_rts_wq23:35:133
27425992780,277cyclictest27089-21kworker/u16:3+efi_rts_wq22:00:133
27425992770,276cyclictest1902-21kworker/u16:0+efi_rts_wq00:15:123
27423992760,275cyclictest5737-21kworker/u16:2+efi_rts_wq22:35:501
27422992760,275cyclictest26502-21kworker/u16:1+efi_rts_wq00:05:140
27424992750,273cyclictest29739-21kworker/u16:3+efi_rts_wq23:45:132
27423992750,274cyclictest26502-21kworker/u16:1+efi_rts_wq00:30:121
27422992750,274cyclictest5737-21kworker/u16:2+efi_rts_wq19:45:040
27422992730,272cyclictest5737-21kworker/u16:2+efi_rts_wq19:30:130
27422992730,272cyclictest5737-21kworker/u16:2+efi_rts_wq19:30:130
27424992720,271cyclictest27089-21kworker/u16:3+efi_rts_wq19:45:122
27425992710,269cyclictest1902-21kworker/u16:0+efi_rts_wq00:00:133
27424992710,269cyclictest29739-21kworker/u16:3+efi_rts_wq23:55:112
27422992710,268cyclictest5737-21kworker/u16:2+efi_rts_wq21:00:130
27422992700,269cyclictest5737-21kworker/u16:2+efi_rts_wq21:05:130
27422992700,269cyclictest27089-21kworker/u16:3+efi_rts_wq19:10:120
27424992690,268cyclictest27089-21kworker/u16:3+efi_rts_wq19:15:012
27424992690,268cyclictest1902-21kworker/u16:0+efi_rts_wq00:00:132
27425992670,266cyclictest26502-21kworker/u16:1+efi_rts_wq23:31:023
27422992660,265cyclictest1902-21kworker/u16:0+efi_rts_wq00:25:120
27425992640,263cyclictest26502-21kworker/u16:1+efi_rts_wq23:56:063
27422992630,262cyclictest26502-21kworker/u16:1+efi_rts_wq23:40:140
27425992610,260cyclictest5737-21kworker/u16:2+efi_rts_wq20:00:143
27424992600,259cyclictest29739-21kworker/u16:3+efi_rts_wq23:20:132
27423992600,259cyclictest26502-21kworker/u16:1+efi_rts_wq22:40:131
27425992570,256cyclictest27089-21kworker/u16:3+efi_rts_wq21:40:383
27423992570,256cyclictest5737-21kworker/u16:2+efi_rts_wq22:15:461
27423992550,254cyclictest27089-21kworker/u16:3+efi_rts_wq19:40:131
27423992540,253cyclictest27089-21kworker/u16:3+efi_rts_wq21:15:141
27422992540,253cyclictest26502-21kworker/u16:1+efi_rts_wq23:30:130
27422992530,252cyclictest27089-21kworker/u16:3+efi_rts_wq19:40:030
27423992520,249cyclictest29739-21kworker/u16:3+efi_rts_wq23:00:121
27422992520,251cyclictest5737-21kworker/u16:2+efi_rts_wq21:50:130
27423992510,250cyclictest29739-21kworker/u16:3+efi_rts_wq23:45:121
27423992500,247cyclictest27089-21kworker/u16:3+efi_rts_wq21:20:141
27423992490,248cyclictest26502-21kworker/u16:1+efi_rts_wq23:55:111
27425992480,247cyclictest5737-21kworker/u16:2+efi_rts_wq19:40:133
27425992450,244cyclictest26502-21kworker/u16:1+efi_rts_wq22:45:133
27424992450,244cyclictest26502-21kworker/u16:1+efi_rts_wq23:25:122
27423992420,241cyclictest26502-21kworker/u16:1+efi_rts_wq23:15:131
27422992420,241cyclictest27089-21kworker/u16:3+efi_rts_wq21:35:140
27425992400,239cyclictest27089-21kworker/u16:3+efi_rts_wq20:50:133
27423992400,239cyclictest5737-21kworker/u16:2+efi_rts_wq22:20:141
27424992390,238cyclictest27089-21kworker/u16:3+efi_rts_wq20:55:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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