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2025-12-10 - 09:46

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 Wed Dec 10, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
108822322315,5sleep00-21swapper/019:05:400
109992320305,5sleep10-21swapper/119:07:081
109122319305,5sleep30-21swapper/319:06:023
109012314306,5sleep20-21swapper/219:05:532
11490993010,300cyclictest6621-21kworker/u16:0+efi_rts_wq22:29:472
11488993010,300cyclictest6621-21kworker/u16:0+efi_rts_wq22:45:120
11490993000,298cyclictest18011-21kworker/u16:1+efi_rts_wq23:10:162
11491992990,298cyclictest31324-21kworker/u16:2+efi_rts_wq22:04:433
11489992990,298cyclictest7321-21kworker/u16:3+efi_rts_wq19:35:141
11491992980,297cyclictest8422-21kworker/u16:0+efi_rts_wq00:20:083
11490992970,296cyclictest31324-21kworker/u16:2+efi_rts_wq20:25:162
11490992970,296cyclictest18011-21kworker/u16:1+efi_rts_wq23:29:592
11488992950,294cyclictest18011-21kworker/u16:1+efi_rts_wq23:35:140
11491992940,293cyclictest10327-21kworker/u16:1+efi_rts_wq22:54:523
11490992940,293cyclictest31324-21kworker/u16:2+efi_rts_wq22:00:142
11491992930,291cyclictest31324-21kworker/u16:2+efi_rts_wq21:15:143
11491992930,291cyclictest31324-21kworker/u16:2+efi_rts_wq21:15:143
11490992930,292cyclictest7321-21kworker/u16:3+efi_rts_wq19:35:132
11488992930,292cyclictest4366-21kworker/u16:4+efi_rts_wq23:55:150
11489992920,291cyclictest31324-21kworker/u16:2+efi_rts_wq19:45:141
11490992910,290cyclictest31324-21kworker/u16:2+efi_rts_wq20:40:132
11491992890,288cyclictest7321-21kworker/u16:3+efi_rts_wq19:30:133
11489992880,287cyclictest31324-21kworker/u16:2+efi_rts_wq22:09:431
11490992850,284cyclictest18011-21kworker/u16:1+efi_rts_wq23:40:012
11489992850,284cyclictest31324-21kworker/u16:2+efi_rts_wq20:29:251
11490992840,283cyclictest7321-21kworker/u16:3+efi_rts_wq19:19:122
11489992840,283cyclictest4366-21kworker/u16:4+efi_rts_wq00:30:131
11489992840,283cyclictest31324-21kworker/u16:2+efi_rts_wq19:20:121
11488992840,283cyclictest4366-21kworker/u16:4+efi_rts_wq00:00:130
11490992830,282cyclictest31324-21kworker/u16:2+efi_rts_wq21:45:132
11490992810,280cyclictest6621-21kworker/u16:0+efi_rts_wq22:19:452
11489992790,278cyclictest7321-21kworker/u16:3+efi_rts_wq19:40:111
11491992770,276cyclictest31324-21kworker/u16:2+efi_rts_wq20:49:293
11489992770,276cyclictest31324-21kworker/u16:2+efi_rts_wq21:29:371
11491992760,275cyclictest31324-21kworker/u16:2+efi_rts_wq20:25:153
11489992750,274cyclictest18011-21kworker/u16:1+efi_rts_wq23:35:001
11489992750,273cyclictest31324-21kworker/u16:2+efi_rts_wq19:10:131
11491992740,273cyclictest6621-21kworker/u16:0+efi_rts_wq20:35:133
11491992740,273cyclictest31324-21kworker/u16:2+efi_rts_wq21:20:133
11491992740,271cyclictest6621-21kworker/u16:0+efi_rts_wq23:15:133
11490992730,272cyclictest31324-21kworker/u16:2+efi_rts_wq19:45:142
11489992730,272cyclictest7321-21kworker/u16:3+efi_rts_wq19:50:131
11489992720,271cyclictest4366-21kworker/u16:4+efi_rts_wq23:50:131
11489992720,271cyclictest31324-21kworker/u16:2+efi_rts_wq23:00:141
11491992710,270cyclictest31324-21kworker/u16:2+efi_rts_wq22:15:133
11490992710,270cyclictest6621-21kworker/u16:0+efi_rts_wq23:20:152
11490992710,269cyclictest6621-21kworker/u16:0+efi_rts_wq23:15:132
11491992700,269cyclictest31324-21kworker/u16:2+efi_rts_wq20:05:143
11489992700,269cyclictest8422-21kworker/u16:0+efi_rts_wq00:35:141
11489992700,269cyclictest4366-21kworker/u16:4+efi_rts_wq00:15:131
11490992690,268cyclictest6621-21kworker/u16:0+efi_rts_wq21:05:132
11490992680,266cyclictest8422-21kworker/u16:0+efi_rts_wq00:10:142
11489992670,266cyclictest6621-21kworker/u16:0+efi_rts_wq20:50:151
11491992650,264cyclictest31324-21kworker/u16:2+efi_rts_wq19:25:123
11488992650,263cyclictest6621-21kworker/u16:0+efi_rts_wq23:25:140
11491992640,263cyclictest6621-21kworker/u16:0+efi_rts_wq22:44:503
11488992640,263cyclictest31324-21kworker/u16:2+efi_rts_wq19:25:140
11491992630,262cyclictest31324-21kworker/u16:2+efi_rts_wq22:35:163
11488992630,262cyclictest4366-21kworker/u16:4+efi_rts_wq23:50:120
11489992620,261cyclictest6621-21kworker/u16:0+efi_rts_wq22:25:151
11489992610,258cyclictest31324-21kworker/u16:2+efi_rts_wq21:30:131
11490992600,259cyclictest6621-21kworker/u16:0+efi_rts_wq20:45:142
11490992600,259cyclictest31324-21kworker/u16:2+efi_rts_wq22:34:482
11489992590,258cyclictest8422-21kworker/u16:0+efi_rts_wq00:10:141
11489992580,257cyclictest6621-21kworker/u16:0+efi_rts_wq20:55:151
11489992570,256cyclictest31324-21kworker/u16:2+efi_rts_wq20:20:131
11489992570,255cyclictest4366-21kworker/u16:4+efi_rts_wq23:55:031
11491992560,255cyclictest7321-21kworker/u16:3+efi_rts_wq20:10:163
11491992550,254cyclictest4366-21kworker/u16:4+efi_rts_wq00:05:053
11490992550,253cyclictest31324-21kworker/u16:2+efi_rts_wq23:00:132
11489992550,252cyclictest6621-21kworker/u16:0+efi_rts_wq23:05:131
11488992550,254cyclictest6621-21kworker/u16:0+efi_rts_wq20:35:120
11491992540,253cyclictest31324-21kworker/u16:2+efi_rts_wq19:20:123
11488992510,250cyclictest7321-21kworker/u16:3+efi_rts_wq20:00:150
11489992500,249cyclictest6621-21kworker/u16:0+efi_rts_wq23:45:131
11488992500,249cyclictest31324-21kworker/u16:2+efi_rts_wq19:55:120
11491992490,248cyclictest7321-21kworker/u16:3+efi_rts_wq19:14:113
11489992480,247cyclictest31324-21kworker/u16:2+efi_rts_wq21:10:141
11491992470,246cyclictest6621-21kworker/u16:0+efi_rts_wq20:30:123
11490992460,245cyclictest10327-21kworker/u16:1+efi_rts_wq22:55:152
11491992450,244cyclictest31324-21kworker/u16:2+efi_rts_wq21:14:333
11490992440,241cyclictest6621-21kworker/u16:0+efi_rts_wq20:50:162
11489992440,243cyclictest18011-21kworker/u16:1+efi_rts_wq23:14:571
11489992430,242cyclictest6621-21kworker/u16:0+efi_rts_wq20:30:121
11490992420,241cyclictest31324-21kworker/u16:2+efi_rts_wq21:20:132
11489992420,241cyclictest4366-21kworker/u16:4+efi_rts_wq00:05:171
11489992410,240cyclictest6621-21kworker/u16:0+efi_rts_wq22:10:121
11491992400,239cyclictest7321-21kworker/u16:3+efi_rts_wq19:40:113
11491992400,239cyclictest6621-21kworker/u16:0+efi_rts_wq21:55:143
11489992400,239cyclictest6621-21kworker/u16:0+efi_rts_wq22:30:151
11488992400,239cyclictest31324-21kworker/u16:2+efi_rts_wq23:04:550
11491992380,237cyclictest4366-21kworker/u16:4+efi_rts_wq00:00:143
11488992381,236cyclictest31324-21kworker/u16:2+efi_rts_wq21:30:130
11489992360,235cyclictest31324-21kworker/u16:2+efi_rts_wq22:35:161
11491992350,234cyclictest31324-21kworker/u16:2+efi_rts_wq22:20:133
11490992340,232cyclictest31324-21kworker/u16:2+efi_rts_wq21:50:132
11489992340,233cyclictest6621-21kworker/u16:0+efi_rts_wq21:15:141
11489992340,233cyclictest6621-21kworker/u16:0+efi_rts_wq21:15:141
11490992320,230cyclictest31324-21kworker/u16:2+efi_rts_wq22:40:122
11489992300,229cyclictest6621-21kworker/u16:0+efi_rts_wq21:59:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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