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2026-08-28 - 15:01

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 Aug 28, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
118692319306,4sleep20-21swapper/219:07:372
119892316310,4sleep30-21swapper/319:09:113
113052314306,5sleep00-21swapper/019:05:360
102172313306,5sleep10-21swapper/119:05:081
12320993050,302cyclictest20033-21kworker/u16:2+efi_rts_wq21:20:143
12319993000,299cyclictest21936-21kworker/u16:1+efi_rts_wq19:25:112
12318993000,299cyclictest20033-21kworker/u16:2+efi_rts_wq20:20:131
12320992990,298cyclictest6622-21kworker/u16:2+efi_rts_wq00:00:133
12320992990,298cyclictest20033-21kworker/u16:2+efi_rts_wq19:19:503
12317992980,297cyclictest21936-21kworker/u16:1+efi_rts_wq19:15:140
12319992970,296cyclictest21936-21kworker/u16:1+efi_rts_wq19:24:502
12320992940,293cyclictest1508-21kworker/u16:1+efi_rts_wq00:35:533
12318992940,293cyclictest20033-21kworker/u16:2+efi_rts_wq20:09:591
12317992940,293cyclictest1508-21kworker/u16:1+efi_rts_wq23:50:430
12317992930,292cyclictest21936-21kworker/u16:1+efi_rts_wq20:40:130
12320992920,291cyclictest21936-21kworker/u16:1+efi_rts_wq20:20:033
12320992920,290cyclictest2352-21kworker/u16:3+efi_rts_wq23:25:133
12319992920,291cyclictest2352-21kworker/u16:3+efi_rts_wq23:25:122
12318992920,291cyclictest21936-21kworker/u16:1+efi_rts_wq19:10:131
12317992910,290cyclictest1508-21kworker/u16:1+efi_rts_wq00:35:130
12320992900,289cyclictest1508-21kworker/u16:1+efi_rts_wq00:10:133
12319992900,289cyclictest6622-21kworker/u16:2+efi_rts_wq00:20:132
12319992870,286cyclictest1508-21kworker/u16:1+efi_rts_wq00:25:142
12317992870,286cyclictest20033-21kworker/u16:2+efi_rts_wq22:20:140
12320992860,285cyclictest2352-21kworker/u16:3+efi_rts_wq22:55:143
12317992860,285cyclictest21936-21kworker/u16:1+efi_rts_wq19:30:120
12317992850,284cyclictest6622-21kworker/u16:2+efi_rts_wq00:15:480
12317992850,282cyclictest21936-21kworker/u16:1+efi_rts_wq20:00:130
12319992840,283cyclictest2352-21kworker/u16:3+efi_rts_wq22:45:312
12317992830,282cyclictest2352-21kworker/u16:3+efi_rts_wq23:05:140
12317992830,282cyclictest14778-21kworker/u16:1+efi_rts_wq23:10:120
12320992820,281cyclictest21936-21kworker/u16:1+efi_rts_wq21:30:143
12317992820,281cyclictest1508-21kworker/u16:1+efi_rts_wq00:30:120
12320992810,280cyclictest20033-21kworker/u16:2+efi_rts_wq21:45:143
12320992790,278cyclictest20033-21kworker/u16:2+efi_rts_wq19:50:123
12318992790,278cyclictest2352-21kworker/u16:3+efi_rts_wq23:45:131
12317992790,278cyclictest21936-21kworker/u16:1+efi_rts_wq20:15:120
12320992780,277cyclictest1508-21kworker/u16:1+efi_rts_wq23:55:443
12317992770,276cyclictest20033-21kworker/u16:2+efi_rts_wq21:40:120
12317992770,276cyclictest20033-21kworker/u16:2+efi_rts_wq21:40:120
12318992760,275cyclictest21936-21kworker/u16:1+efi_rts_wq19:45:121
12318992750,274cyclictest21936-21kworker/u16:1+efi_rts_wq19:35:121
12320992740,273cyclictest21936-21kworker/u16:1+efi_rts_wq19:45:123
12320992720,270cyclictest2352-21kworker/u16:3+efi_rts_wq23:45:133
12320992710,270cyclictest20033-21kworker/u16:2+efi_rts_wq22:45:143
12318992700,267cyclictest20033-21kworker/u16:2+efi_rts_wq20:30:121
12318992690,268cyclictest2352-21kworker/u16:3+efi_rts_wq23:20:121
12317992690,268cyclictest20033-21kworker/u16:2+efi_rts_wq22:00:120
12320992680,267cyclictest14778-21kworker/u16:1+efi_rts_wq23:05:363
12320992670,266cyclictest20033-21kworker/u16:2+efi_rts_wq21:00:133
12317992670,266cyclictest20033-21kworker/u16:2+efi_rts_wq21:10:130
12317992670,266cyclictest20033-21kworker/u16:2+efi_rts_wq21:05:100
12319992660,265cyclictest21936-21kworker/u16:1+efi_rts_wq19:55:112
12319992650,263cyclictest20033-21kworker/u16:2+efi_rts_wq22:35:142
12319992640,263cyclictest6622-21kworker/u16:2+efi_rts_wq00:05:132
12317992640,263cyclictest21936-21kworker/u16:1+efi_rts_wq20:35:130
12318992620,261cyclictest21936-21kworker/u16:1+efi_rts_wq21:55:121
12320992590,258cyclictest21936-21kworker/u16:1+efi_rts_wq20:35:053
12318992590,258cyclictest20033-21kworker/u16:2+efi_rts_wq22:50:131
12317992590,258cyclictest20033-21kworker/u16:2+efi_rts_wq20:30:040
12320992580,257cyclictest20033-21kworker/u16:2+efi_rts_wq22:10:123
12318992580,257cyclictest21936-21kworker/u16:1+efi_rts_wq20:35:131
12318992570,256cyclictest1508-21kworker/u16:1+efi_rts_wq00:15:121
12317992550,254cyclictest2352-21kworker/u16:3+efi_rts_wq23:25:120
12320992540,251cyclictest21936-21kworker/u16:1+efi_rts_wq20:15:123
12319992540,253cyclictest20033-21kworker/u16:2+efi_rts_wq20:25:122
12318992540,253cyclictest20033-21kworker/u16:2+efi_rts_wq21:05:131
12318992500,249cyclictest20033-21kworker/u16:2+efi_rts_wq21:10:131
12319992480,247cyclictest20033-21kworker/u16:2+efi_rts_wq20:50:122
12318992480,247cyclictest21936-21kworker/u16:1+efi_rts_wq21:15:141
12319992460,245cyclictest20033-21kworker/u16:2+efi_rts_wq19:50:112
12319992440,242cyclictest2352-21kworker/u16:3+efi_rts_wq23:15:142
12318992440,243cyclictest20033-21kworker/u16:2+efi_rts_wq21:20:131
12319992430,242cyclictest2352-21kworker/u16:3+efi_rts_wq23:35:132
12317992430,241cyclictest20033-21kworker/u16:2+efi_rts_wq22:30:130
12318992390,238cyclictest20033-21kworker/u16:2+efi_rts_wq22:10:121
12317992390,238cyclictest6622-21kworker/u16:2+efi_rts_wq00:05:120
12318992380,237cyclictest6622-21kworker/u16:2+efi_rts_wq00:30:511
12320992370,236cyclictest20033-21kworker/u16:2+efi_rts_wq21:50:133
12320992340,233cyclictest21936-21kworker/u16:1+efi_rts_wq20:55:133
12317992340,233cyclictest2352-21kworker/u16:3+efi_rts_wq23:20:380
12317992340,232cyclictest21936-21kworker/u16:1+efi_rts_wq21:25:120
12319992320,231cyclictest21936-21kworker/u16:1+efi_rts_wq20:55:132
12319992320,231cyclictest21936-21kworker/u16:1+efi_rts_wq19:40:132
12318992290,228cyclictest27042-21kworker/u16:0+efi_rts_wq23:40:421
12319992280,227cyclictest20033-21kworker/u16:2+efi_rts_wq22:15:122
12317992260,225cyclictest21936-21kworker/u16:1+efi_rts_wq22:25:160
12320992250,224cyclictest14778-21kworker/u16:1+efi_rts_wq23:30:393
12318992250,224cyclictest20033-21kworker/u16:2+efi_rts_wq22:05:231
12319992220,220cyclictest2352-21kworker/u16:3+efi_rts_wq23:05:142
12318992200,219cyclictest1508-21kworker/u16:1+efi_rts_wq00:00:451
12320992190,218cyclictest21936-21kworker/u16:1+efi_rts_wq21:35:173
12318992190,218cyclictest1508-21kworker/u16:1+efi_rts_wq23:50:131
12317992180,216cyclictest14778-21kworker/u16:1+efi_rts_wq23:00:130
12320992120,211cyclictest20033-21kworker/u16:2+efi_rts_wq22:15:133
12317992120,211cyclictest21936-21kworker/u16:1+efi_rts_wq21:15:120
12320992100,209cyclictest20033-21kworker/u16:2+efi_rts_wq20:10:133
12317992090,208cyclictest2352-21kworker/u16:3+efi_rts_wq23:35:130
12319992050,204cyclictest21936-21kworker/u16:1+efi_rts_wq22:25:162
12320992040,203cyclictest1508-21kworker/u16:1+efi_rts_wq00:15:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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