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2026-09-20 - 08:54

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 Sun Sep 20, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74772339313,24sleep20-21swapper/219:05:562
75652318310,5sleep30-21swapper/319:07:053
76462315307,5sleep00-21swapper/019:08:070
75432314306,5sleep10-21swapper/119:06:471
8059993060,305cyclictest5364-21kworker/u16:3+efi_rts_wq23:00:122
8059993050,304cyclictest18286-21kworker/u16:2+efi_rts_wq19:15:132
8059993040,303cyclictest18286-21kworker/u16:2+efi_rts_wq22:35:132
8059993040,303cyclictest18286-21kworker/u16:2+efi_rts_wq20:09:382
8059993030,302cyclictest18286-21kworker/u16:2+efi_rts_wq19:50:132
8057993030,302cyclictest18286-21kworker/u16:2+efi_rts_wq20:04:360
8060993020,301cyclictest18004-21kworker/u16:3+efi_rts_wq22:30:123
8058993020,301cyclictest25006-21kworker/u16:2+efi_rts_wq00:00:141
8058993020,301cyclictest25006-21kworker/u16:2+efi_rts_wq00:00:141
8060993010,299cyclictest5364-21kworker/u16:3+efi_rts_wq23:00:143
8059993010,300cyclictest10718-21kworker/u16:1+efi_rts_wq21:10:142
8057993010,300cyclictest18286-21kworker/u16:2+efi_rts_wq22:40:130
8060993000,299cyclictest5364-21kworker/u16:3+efi_rts_wq23:15:133
8060993000,299cyclictest18286-21kworker/u16:2+efi_rts_wq22:15:123
8059992990,298cyclictest10718-21kworker/u16:1+efi_rts_wq19:40:142
8060992980,297cyclictest7947-21kworker/u16:1+efi_rts_wq00:20:133
8059992980,297cyclictest7947-21kworker/u16:1+efi_rts_wq23:50:122
8059992970,296cyclictest18286-21kworker/u16:2+efi_rts_wq21:00:152
8059992960,295cyclictest7947-21kworker/u16:1+efi_rts_wq00:15:142
8057992950,294cyclictest18286-21kworker/u16:2+efi_rts_wq21:20:140
8057992950,294cyclictest18286-21kworker/u16:2+efi_rts_wq20:35:140
8057992950,294cyclictest10718-21kworker/u16:1+efi_rts_wq22:05:140
8057992940,293cyclictest10718-21kworker/u16:1+efi_rts_wq20:25:110
8060992910,290cyclictest18286-21kworker/u16:2+efi_rts_wq21:45:113
8058992910,290cyclictest7947-21kworker/u16:1+efi_rts_wq23:25:131
8058992910,290cyclictest18286-21kworker/u16:2+efi_rts_wq20:20:161
8058992910,290cyclictest18286-21kworker/u16:2+efi_rts_wq19:49:341
8057992910,290cyclictest7947-21kworker/u16:1+efi_rts_wq23:40:150
8060992900,289cyclictest25006-21kworker/u16:2+efi_rts_wq00:05:203
8057992900,289cyclictest25006-21kworker/u16:2+efi_rts_wq00:10:200
8059992890,288cyclictest7947-21kworker/u16:1+efi_rts_wq23:40:112
8058992870,286cyclictest18286-21kworker/u16:2+efi_rts_wq20:45:131
8057992860,285cyclictest18286-21kworker/u16:2+efi_rts_wq21:59:560
8057992860,285cyclictest18286-21kworker/u16:2+efi_rts_wq21:40:130
8057992830,282cyclictest25006-21kworker/u16:2+efi_rts_wq00:00:140
8057992830,282cyclictest25006-21kworker/u16:2+efi_rts_wq00:00:130
8060992820,281cyclictest7947-21kworker/u16:1+efi_rts_wq23:30:133
8060992820,281cyclictest5364-21kworker/u16:3+efi_rts_wq23:25:123
8060992820,281cyclictest10718-21kworker/u16:1+efi_rts_wq19:15:003
8057992810,280cyclictest18286-21kworker/u16:2+efi_rts_wq20:44:430
8059992800,279cyclictest25006-21kworker/u16:2+efi_rts_wq23:55:192
8059992800,279cyclictest10718-21kworker/u16:1+efi_rts_wq22:00:112
8060992780,277cyclictest7947-21kworker/u16:1+efi_rts_wq00:30:143
8060992780,277cyclictest18286-21kworker/u16:2+efi_rts_wq19:25:143
8057992780,275cyclictest18004-21kworker/u16:3+efi_rts_wq22:25:130
8057992760,275cyclictest18004-21kworker/u16:3+efi_rts_wq22:30:000
8058992750,274cyclictest18004-21kworker/u16:3+efi_rts_wq22:10:151
8059992740,273cyclictest18286-21kworker/u16:2+efi_rts_wq22:50:142
8060992720,271cyclictest18286-21kworker/u16:2+efi_rts_wq21:30:153
8058992720,271cyclictest10718-21kworker/u16:1+efi_rts_wq21:09:481
8057992720,270cyclictest7947-21kworker/u16:1+efi_rts_wq00:20:120
8058992710,270cyclictest18286-21kworker/u16:2+efi_rts_wq20:30:141
8058992710,270cyclictest10718-21kworker/u16:1+efi_rts_wq21:55:131
8060992700,269cyclictest18286-21kworker/u16:2+efi_rts_wq20:50:123
8057992700,269cyclictest18286-21kworker/u16:2+efi_rts_wq20:55:140
8058992690,268cyclictest18004-21kworker/u16:3+efi_rts_wq22:24:591
8057992680,267cyclictest10718-21kworker/u16:1+efi_rts_wq21:50:120
8058992670,266cyclictest7947-21kworker/u16:1+efi_rts_wq23:50:121
8059992660,265cyclictest7947-21kworker/u16:1+efi_rts_wq00:25:232
8059992660,265cyclictest18286-21kworker/u16:2+efi_rts_wq20:24:402
8058992660,265cyclictest25006-21kworker/u16:2+efi_rts_wq00:05:141
8059992650,264cyclictest18286-21kworker/u16:2+efi_rts_wq20:10:132
8057992650,264cyclictest18286-21kworker/u16:2+efi_rts_wq21:05:130
8059992640,263cyclictest7947-21kworker/u16:1+efi_rts_wq23:30:122
8059992640,263cyclictest16568-21kworker/u16:0+efi_rts_wq00:35:142
8058992630,262cyclictest10718-21kworker/u16:1+efi_rts_wq19:30:141
8057992630,262cyclictest7947-21kworker/u16:1+efi_rts_wq23:20:110
8058992600,259cyclictest18286-21kworker/u16:2+efi_rts_wq19:20:141
8059992570,255cyclictest18286-21kworker/u16:2+efi_rts_wq22:20:132
8057992560,255cyclictest10718-21kworker/u16:1+efi_rts_wq21:29:510
8060992550,254cyclictest10718-21kworker/u16:1+efi_rts_wq21:35:133
8059992540,253cyclictest18286-21kworker/u16:2+efi_rts_wq20:50:122
8058992540,253cyclictest18286-21kworker/u16:2+efi_rts_wq19:55:151
8060992530,252cyclictest7947-21kworker/u16:1+efi_rts_wq23:45:153
8060992520,251cyclictest5364-21kworker/u16:3+efi_rts_wq23:10:143
8058992500,249cyclictest7947-21kworker/u16:1+efi_rts_wq00:10:141
8057992490,248cyclictest7947-21kworker/u16:1+efi_rts_wq23:00:060
8060992480,247cyclictest18286-21kworker/u16:2+efi_rts_wq20:10:133
8058992480,247cyclictest7947-21kworker/u16:1+efi_rts_wq00:25:141
8058992460,245cyclictest18004-21kworker/u16:3+efi_rts_wq22:30:111
8060992450,244cyclictest28260-21kworker/u16:0+efi_rts_wq22:40:033
8060992430,242cyclictest18286-21kworker/u16:2+efi_rts_wq21:24:503
8060992430,242cyclictest18286-21kworker/u16:2+efi_rts_wq19:10:153
8058992430,242cyclictest10718-21kworker/u16:1+efi_rts_wq19:19:281
8060992410,240cyclictest18286-21kworker/u16:2+efi_rts_wq22:55:143
8060992390,238cyclictest5364-21kworker/u16:3+efi_rts_wq23:05:143
8058992390,238cyclictest18286-21kworker/u16:2+efi_rts_wq21:04:471
8060992380,237cyclictest10718-21kworker/u16:1+efi_rts_wq22:05:143
8057992380,237cyclictest28260-21kworker/u16:0+efi_rts_wq22:50:040
8057992380,237cyclictest18286-21kworker/u16:2+efi_rts_wq19:15:140
8060992340,233cyclictest18286-21kworker/u16:2+efi_rts_wq21:15:133
8059992340,233cyclictest10718-21kworker/u16:1+efi_rts_wq19:14:282
8060992330,232cyclictest10718-21kworker/u16:1+efi_rts_wq21:50:133
8059992320,231cyclictest18286-21kworker/u16:2+efi_rts_wq21:44:542
8057992310,230cyclictest18286-21kworker/u16:2+efi_rts_wq20:15:130
8060992290,228cyclictest20727-21kworker/u16:4+efi_rts_wq00:35:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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