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2026-03-25 - 14:40

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 50 highest latencies:
System rackcslot3s.osadl.org (updated Wed Mar 25, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314952328321,5sleep00-21swapper/019:05:500
317862324309,5sleep30-21swapper/319:09:333
316012321306,5sleep20-21swapper/219:07:122
314962316309,4sleep10-21swapper/119:05:511
32086993150,314cyclictest2721-21kworker/u16:2+efi_rts_wq23:45:132
32084993130,312cyclictest5667-21kworker/u16:3+efi_rts_wq00:15:070
32084993110,310cyclictest5667-21kworker/u16:3+efi_rts_wq00:35:130
32087993080,304cyclictest25941-21kworker/u16:3+efi_rts_wq22:35:133
32087993070,306cyclictest25941-21kworker/u16:3+efi_rts_wq22:00:123
32087993070,306cyclictest12230-21kworker/u16:1+efi_rts_wq19:30:123
32086993070,306cyclictest25941-21kworker/u16:3+efi_rts_wq21:25:132
32084993070,306cyclictest25941-21kworker/u16:3+efi_rts_wq20:40:120
32085993060,305cyclictest5667-21kworker/u16:3+efi_rts_wq23:55:141
32085993040,303cyclictest12230-21kworker/u16:1+efi_rts_wq20:50:131
32087993030,302cyclictest25941-21kworker/u16:3+efi_rts_wq22:40:133
32084993010,300cyclictest25941-21kworker/u16:3+efi_rts_wq20:10:160
32085993000,299cyclictest12230-21kworker/u16:1+efi_rts_wq19:35:141
32084992990,298cyclictest21392-21kworker/u16:2+efi_rts_wq23:25:140
32087992980,297cyclictest29954-21kworker/u16:1+efi_rts_wq23:40:133
32087992980,297cyclictest25941-21kworker/u16:3+efi_rts_wq19:10:143
32086992960,295cyclictest25941-21kworker/u16:3+efi_rts_wq22:40:132
32085992940,293cyclictest12230-21kworker/u16:1+efi_rts_wq21:20:131
32085992930,292cyclictest29954-21kworker/u16:1+efi_rts_wq23:35:141
32085992930,292cyclictest14441-21kworker/u16:0+efi_rts_wq23:24:571
32084992930,292cyclictest25941-21kworker/u16:3+efi_rts_wq22:05:140
32084992930,292cyclictest12230-21kworker/u16:1+efi_rts_wq21:00:130
32084992930,292cyclictest12230-21kworker/u16:1+efi_rts_wq20:05:130
32087992920,291cyclictest25941-21kworker/u16:3+efi_rts_wq20:25:133
32087992920,291cyclictest25941-21kworker/u16:3+efi_rts_wq20:00:143
32087992920,291cyclictest14441-21kworker/u16:0+efi_rts_wq00:30:113
32087992910,290cyclictest25941-21kworker/u16:3+efi_rts_wq19:40:133
32087992910,290cyclictest25941-21kworker/u16:3+efi_rts_wq19:40:133
32087992900,289cyclictest25941-21kworker/u16:3+efi_rts_wq19:15:023
32087992890,288cyclictest28508-21kworker/u16:2+efi_rts_wq22:50:143
32084992880,287cyclictest25941-21kworker/u16:3+efi_rts_wq19:15:130
32086992860,282cyclictest28508-21kworker/u16:2+efi_rts_wq23:00:122
32085992860,285cyclictest17340-21kworker/u16:3+efi_rts_wq23:15:111
32087992850,284cyclictest12230-21kworker/u16:1+efi_rts_wq19:54:183
32085992850,284cyclictest25941-21kworker/u16:3+efi_rts_wq20:44:261
32086992840,283cyclictest28508-21kworker/u16:2+efi_rts_wq22:34:472
32085992830,282cyclictest25941-21kworker/u16:3+efi_rts_wq22:15:121
32085992830,282cyclictest25941-21kworker/u16:3+efi_rts_wq20:55:111
32087992820,281cyclictest25941-21kworker/u16:3+efi_rts_wq22:05:143
32087992820,281cyclictest12230-21kworker/u16:1+efi_rts_wq19:45:123
32087992820,281cyclictest12230-21kworker/u16:1+efi_rts_wq19:45:123
32086992810,280cyclictest25941-21kworker/u16:3+efi_rts_wq21:34:362
32085992810,280cyclictest14441-21kworker/u16:0+efi_rts_wq00:15:141
32087992800,279cyclictest14441-21kworker/u16:0+efi_rts_wq23:09:543
32085992800,279cyclictest14441-21kworker/u16:0+efi_rts_wq00:25:141
32085992800,279cyclictest14441-21kworker/u16:0+efi_rts_wq00:05:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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