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2026-04-25 - 09:29

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 Sat Apr 25, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267852321315,4sleep20-21swapper/219:06:542
269572318303,5sleep00-21swapper/019:09:080
249632318311,4sleep30-21swapper/319:05:063
27291993170,316cyclictest25059-21kworker/u16:3+efi_rts_wq23:45:130
266902317310,5sleep10-21swapper/119:05:411
27294993140,313cyclictest17745-21kworker/u16:3+efi_rts_wq19:20:133
27294993140,313cyclictest17745-21kworker/u16:3+efi_rts_wq19:15:133
27292993140,313cyclictest17745-21kworker/u16:3+efi_rts_wq19:45:131
27291993120,311cyclictest18887-21kworker/u16:1+efi_rts_wq22:40:130
27294993100,309cyclictest18887-21kworker/u16:1+efi_rts_wq23:05:133
27291993100,309cyclictest30117-21kworker/u16:0+efi_rts_wq21:24:450
27294993090,308cyclictest12858-21kworker/u16:0+efi_rts_wq00:25:143
27291993090,308cyclictest12858-21kworker/u16:0+efi_rts_wq00:05:120
27294993080,307cyclictest18887-21kworker/u16:1+efi_rts_wq20:55:133
27291993080,307cyclictest10113-21kworker/u16:2+efi_rts_wq23:05:050
27294993070,306cyclictest17745-21kworker/u16:3+efi_rts_wq20:24:363
27293993070,306cyclictest18887-21kworker/u16:1+efi_rts_wq22:45:012
27293993070,306cyclictest18887-21kworker/u16:1+efi_rts_wq20:59:422
27293993070,306cyclictest17745-21kworker/u16:3+efi_rts_wq19:15:022
27292993030,302cyclictest12858-21kworker/u16:0+efi_rts_wq23:50:121
27291993020,301cyclictest7053-21kworker/u16:3+efi_rts_wq23:15:120
27291993020,301cyclictest17745-21kworker/u16:3+efi_rts_wq19:35:120
27294993010,300cyclictest18887-21kworker/u16:1+efi_rts_wq22:25:143
27294993000,299cyclictest12858-21kworker/u16:0+efi_rts_wq23:40:133
27293993000,299cyclictest17745-21kworker/u16:3+efi_rts_wq19:10:122
27291993000,299cyclictest18887-21kworker/u16:1+efi_rts_wq22:19:570
27291993000,299cyclictest12858-21kworker/u16:0+efi_rts_wq00:10:120
27292992990,298cyclictest18887-21kworker/u16:1+efi_rts_wq22:25:131
27292992980,297cyclictest22375-21kworker/u16:2+efi_rts_wq19:40:121
27294992970,296cyclictest18887-21kworker/u16:1+efi_rts_wq21:20:103
27293992970,296cyclictest22375-21kworker/u16:2+efi_rts_wq19:30:122
27291992970,296cyclictest30117-21kworker/u16:0+efi_rts_wq20:25:130
27292992950,294cyclictest12858-21kworker/u16:0+efi_rts_wq23:30:111
27292992940,293cyclictest12858-21kworker/u16:0+efi_rts_wq00:00:111
27292992930,290cyclictest30117-21kworker/u16:0+efi_rts_wq21:25:121
27294992910,290cyclictest18887-21kworker/u16:1+efi_rts_wq23:25:143
27291992910,290cyclictest17745-21kworker/u16:3+efi_rts_wq19:55:120
27294992900,289cyclictest30117-21kworker/u16:0+efi_rts_wq21:40:133
27294992900,289cyclictest18887-21kworker/u16:1+efi_rts_wq20:50:123
27293992900,289cyclictest25059-21kworker/u16:3+efi_rts_wq00:15:152
27292992900,289cyclictest18887-21kworker/u16:1+efi_rts_wq21:35:131
27292992900,289cyclictest18887-21kworker/u16:1+efi_rts_wq20:39:381
27291992890,288cyclictest12858-21kworker/u16:0+efi_rts_wq00:30:120
27291992880,287cyclictest18887-21kworker/u16:1+efi_rts_wq20:55:130
27291992880,287cyclictest18887-21kworker/u16:1+efi_rts_wq20:45:140
27294992860,285cyclictest30117-21kworker/u16:0+efi_rts_wq21:50:133
27294992860,285cyclictest18887-21kworker/u16:1+efi_rts_wq23:20:133
27294992840,283cyclictest30117-21kworker/u16:0+efi_rts_wq21:45:153
27291992840,283cyclictest18887-21kworker/u16:1+efi_rts_wq21:55:120
27291992840,283cyclictest17745-21kworker/u16:3+efi_rts_wq19:10:120
27293992830,282cyclictest22375-21kworker/u16:2+efi_rts_wq20:15:152
27293992830,282cyclictest22375-21kworker/u16:2+efi_rts_wq20:00:122
27294992810,280cyclictest22375-21kworker/u16:2+efi_rts_wq20:00:123
27292992800,278cyclictest18887-21kworker/u16:1+efi_rts_wq23:20:131
27293992790,278cyclictest18887-21kworker/u16:1+efi_rts_wq20:40:122
27291992790,278cyclictest30117-21kworker/u16:0+efi_rts_wq21:45:140
27293992770,276cyclictest18887-21kworker/u16:1+efi_rts_wq21:29:472
27294992760,275cyclictest17745-21kworker/u16:3+efi_rts_wq19:35:123
27294992760,275cyclictest12858-21kworker/u16:0+efi_rts_wq00:16:063
27293992750,274cyclictest30117-21kworker/u16:0+efi_rts_wq21:40:132
27294992740,272cyclictest17745-21kworker/u16:3+efi_rts_wq19:25:123
27292992720,271cyclictest18887-21kworker/u16:1+efi_rts_wq23:05:121
27291992720,271cyclictest30117-21kworker/u16:0+efi_rts_wq21:50:130
27292992710,270cyclictest18887-21kworker/u16:1+efi_rts_wq22:55:111
27291992710,270cyclictest30117-21kworker/u16:0+efi_rts_wq21:30:130
27292992700,269cyclictest17745-21kworker/u16:3+efi_rts_wq20:20:111
27293992670,266cyclictest22375-21kworker/u16:2+efi_rts_wq19:45:142
27291992670,266cyclictest18887-21kworker/u16:1+efi_rts_wq22:30:130
27293992660,264cyclictest18887-21kworker/u16:1+efi_rts_wq22:35:142
27292992640,263cyclictest25059-21kworker/u16:3+efi_rts_wq23:55:131
27294992620,261cyclictest12858-21kworker/u16:0+efi_rts_wq23:30:113
27291992620,261cyclictest18887-21kworker/u16:1+efi_rts_wq23:00:040
27292992610,260cyclictest18887-21kworker/u16:1+efi_rts_wq20:40:111
27293992600,259cyclictest30117-21kworker/u16:0+efi_rts_wq21:39:502
27292992600,259cyclictest30117-21kworker/u16:0+efi_rts_wq22:50:121
27292992600,259cyclictest18887-21kworker/u16:1+efi_rts_wq22:34:591
27294992590,258cyclictest18887-21kworker/u16:1+efi_rts_wq22:00:133
27294992580,257cyclictest30117-21kworker/u16:0+efi_rts_wq22:09:563
27291992580,257cyclictest12858-21kworker/u16:0+efi_rts_wq23:50:120
27292992560,255cyclictest17745-21kworker/u16:3+efi_rts_wq20:05:131
27294992540,253cyclictest18887-21kworker/u16:1+efi_rts_wq20:30:133
27293992540,251cyclictest18887-21kworker/u16:1+efi_rts_wq22:15:132
27292992540,253cyclictest30117-21kworker/u16:0+efi_rts_wq23:00:131
27292992540,253cyclictest18887-21kworker/u16:1+efi_rts_wq21:05:111
27294992520,251cyclictest18887-21kworker/u16:1+efi_rts_wq22:15:143
27291992520,251cyclictest18887-21kworker/u16:1+efi_rts_wq21:09:430
27294992490,248cyclictest18887-21kworker/u16:1+efi_rts_wq22:24:573
27294992480,247cyclictest18887-21kworker/u16:1+efi_rts_wq21:55:133
27292992440,243cyclictest25059-21kworker/u16:3+efi_rts_wq00:20:121
27292992440,243cyclictest18887-21kworker/u16:1+efi_rts_wq20:30:131
27294992410,240cyclictest18887-21kworker/u16:1+efi_rts_wq23:35:133
27291992410,240cyclictest17745-21kworker/u16:3+efi_rts_wq20:05:130
27294992400,239cyclictest30117-21kworker/u16:0+efi_rts_wq20:25:133
27292992380,237cyclictest18887-21kworker/u16:1+efi_rts_wq22:35:131
27294992370,235cyclictest18887-21kworker/u16:1+efi_rts_wq22:45:163
27292992370,236cyclictest30117-21kworker/u16:0+efi_rts_wq22:10:121
27293992340,233cyclictest12858-21kworker/u16:0+efi_rts_wq23:40:102
27291992340,233cyclictest18887-21kworker/u16:1+efi_rts_wq21:15:120
27293992300,229cyclictest18887-21kworker/u16:1+efi_rts_wq23:10:102
27291992300,229cyclictest18887-21kworker/u16:1+efi_rts_wq20:54:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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