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2026-06-12 - 13:30

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 Fri Jun 12, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14452321307,4sleep30-21swapper/319:07:463
15532315307,5sleep20-21swapper/219:09:082
14552314306,5sleep10-21swapper/119:07:521
14792313306,5sleep00-21swapper/019:08:110
1888993000,299cyclictest3970-21kworker/u16:1+efi_rts_wq20:15:123
1887993000,299cyclictest11307-21kworker/u16:0+efi_rts_wq00:00:122
1885993000,297cyclictest19445-21kworker/u16:0+efi_rts_wq22:45:140
1886992990,298cyclictest3970-21kworker/u16:1+efi_rts_wq23:10:111
1886992990,298cyclictest11307-21kworker/u16:0+efi_rts_wq23:30:121
1885992980,297cyclictest3970-21kworker/u16:1+efi_rts_wq23:00:120
1888992970,296cyclictest3970-21kworker/u16:1+efi_rts_wq21:15:143
1886992970,296cyclictest3970-21kworker/u16:1+efi_rts_wq21:19:521
1888992960,295cyclictest3970-21kworker/u16:1+efi_rts_wq23:55:123
1888992960,295cyclictest20168-21kworker/u16:3+efi_rts_wq19:40:123
1886992960,295cyclictest14649-21kworker/u16:2+efi_rts_wq23:15:131
1888992950,294cyclictest11307-21kworker/u16:0+efi_rts_wq00:25:253
1888992940,293cyclictest11307-21kworker/u16:0+efi_rts_wq00:30:123
1885992940,293cyclictest3970-21kworker/u16:1+efi_rts_wq19:30:120
1888992930,292cyclictest11307-21kworker/u16:0+efi_rts_wq23:50:193
1886992920,291cyclictest14649-21kworker/u16:2+efi_rts_wq20:20:121
1885992910,290cyclictest14649-21kworker/u16:2+efi_rts_wq23:05:120
1888992900,289cyclictest3970-21kworker/u16:1+efi_rts_wq20:50:123
1887992900,289cyclictest11307-21kworker/u16:0+efi_rts_wq00:05:132
1886992870,286cyclictest3970-21kworker/u16:1+efi_rts_wq21:39:551
1888992860,285cyclictest11307-21kworker/u16:0+efi_rts_wq23:35:123
1887992860,284cyclictest14649-21kworker/u16:2+efi_rts_wq21:40:122
1885992860,285cyclictest3970-21kworker/u16:1+efi_rts_wq20:45:120
1887992840,283cyclictest3970-21kworker/u16:1+efi_rts_wq19:15:112
1887992840,283cyclictest11307-21kworker/u16:0+efi_rts_wq00:35:132
1885992840,283cyclictest11307-21kworker/u16:0+efi_rts_wq00:15:120
1886992830,282cyclictest14649-21kworker/u16:2+efi_rts_wq22:35:121
1888992820,281cyclictest14649-21kworker/u16:2+efi_rts_wq19:55:113
1886992820,281cyclictest14649-21kworker/u16:2+efi_rts_wq22:45:051
1885992820,281cyclictest3970-21kworker/u16:1+efi_rts_wq22:15:120
1885992820,281cyclictest14649-21kworker/u16:2+efi_rts_wq20:44:440
1887992810,280cyclictest14649-21kworker/u16:2+efi_rts_wq22:35:132
1886992810,280cyclictest3970-21kworker/u16:1+efi_rts_wq21:54:571
1887992800,279cyclictest20168-21kworker/u16:3+efi_rts_wq19:25:102
1887992800,278cyclictest3970-21kworker/u16:1+efi_rts_wq23:25:122
1885992790,278cyclictest3970-21kworker/u16:1+efi_rts_wq19:14:320
1888992780,277cyclictest3970-21kworker/u16:1+efi_rts_wq19:35:133
1885992760,275cyclictest20168-21kworker/u16:3+efi_rts_wq19:40:120
1887992750,274cyclictest3970-21kworker/u16:1+efi_rts_wq21:30:112
1885992750,274cyclictest14649-21kworker/u16:2+efi_rts_wq23:15:130
1885992750,274cyclictest14649-21kworker/u16:2+efi_rts_wq20:05:130
1888992740,273cyclictest14649-21kworker/u16:2+efi_rts_wq20:40:123
1885992740,273cyclictest3970-21kworker/u16:1+efi_rts_wq20:30:120
1886992720,271cyclictest14649-21kworker/u16:2+efi_rts_wq21:55:121
1886992720,271cyclictest14649-21kworker/u16:2+efi_rts_wq20:35:121
1885992720,271cyclictest3970-21kworker/u16:1+efi_rts_wq19:24:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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