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2025-12-01 - 09:51

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 Sun Nov 30, 2025 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311752322308,4sleep30-21swapper/307:07:143
310412321306,5sleep10-21swapper/107:05:321
312672317310,5sleep20-21swapper/207:08:252
313052315307,5sleep00-21swapper/007:08:560
31658993000,299cyclictest11591-21kworker/u16:4+efi_rts_wq08:57:133
31657993000,299cyclictest3755-21kworker/u16:0+efi_rts_wq11:30:132
31658992990,298cyclictest11591-21kworker/u16:4+efi_rts_wq09:45:133
31658992990,298cyclictest11591-21kworker/u16:4+efi_rts_wq09:45:133
31656992990,298cyclictest1692-21kworker/u16:1+efi_rts_wq12:15:141
31656992980,297cyclictest21469-21kworker/u16:0+efi_rts_wq10:50:151
31655992970,296cyclictest32043-21kworker/u16:0+efi_rts_wq08:40:140
31658992960,295cyclictest3415-21kworker/u16:1+efi_rts_wq07:15:153
31656992960,295cyclictest32043-21kworker/u16:0+efi_rts_wq08:50:131
31657992940,293cyclictest32043-21kworker/u16:0+efi_rts_wq07:40:162
31655992930,292cyclictest31116-21kworker/u16:2+efi_rts_wq11:55:140
31658992920,291cyclictest31469-21kworker/u16:3+efi_rts_wq12:35:143
31656992910,290cyclictest31469-21kworker/u16:3+efi_rts_wq12:35:141
31655992910,290cyclictest9527-21kworker/u16:3+efi_rts_wq10:25:140
31655992910,290cyclictest11591-21kworker/u16:4+efi_rts_wq09:10:130
31657992900,289cyclictest31469-21kworker/u16:3+efi_rts_wq12:10:152
31657992900,289cyclictest11591-21kworker/u16:4+efi_rts_wq09:30:122
31655992900,289cyclictest31116-21kworker/u16:2+efi_rts_wq11:00:130
31658992890,288cyclictest3755-21kworker/u16:0+efi_rts_wq11:32:413
31656992890,288cyclictest1692-21kworker/u16:1+efi_rts_wq12:07:481
31655992880,287cyclictest9527-21kworker/u16:3+efi_rts_wq10:20:150
31655992880,287cyclictest11591-21kworker/u16:4+efi_rts_wq10:15:120
31655992870,286cyclictest32043-21kworker/u16:0+efi_rts_wq07:30:130
31658992860,285cyclictest31469-21kworker/u16:3+efi_rts_wq12:20:133
31657992860,285cyclictest31116-21kworker/u16:2+efi_rts_wq11:05:132
31655992860,285cyclictest31116-21kworker/u16:2+efi_rts_wq11:27:400
31657992850,284cyclictest3415-21kworker/u16:1+efi_rts_wq08:37:092
31657992850,284cyclictest11591-21kworker/u16:4+efi_rts_wq09:10:132
31658992840,283cyclictest9527-21kworker/u16:3+efi_rts_wq10:02:253
31656992840,283cyclictest32043-21kworker/u16:0+efi_rts_wq08:15:151
31655992840,283cyclictest3415-21kworker/u16:1+efi_rts_wq07:15:010
31655992840,283cyclictest21469-21kworker/u16:0+efi_rts_wq10:55:130
31657992820,281cyclictest3415-21kworker/u16:1+efi_rts_wq08:22:062
31656992820,281cyclictest3415-21kworker/u16:1+efi_rts_wq07:36:581
31657992810,280cyclictest9527-21kworker/u16:3+efi_rts_wq10:47:332
31656992810,280cyclictest31116-21kworker/u16:2+efi_rts_wq11:10:131
31657992800,279cyclictest31116-21kworker/u16:2+efi_rts_wq11:22:392
31658992790,278cyclictest3755-21kworker/u16:0+efi_rts_wq12:05:143
31655992790,278cyclictest3415-21kworker/u16:1+efi_rts_wq08:20:140
31657992760,275cyclictest11591-21kworker/u16:4+efi_rts_wq09:02:142
31655992760,275cyclictest3755-21kworker/u16:0+efi_rts_wq11:20:140
31657992740,273cyclictest3415-21kworker/u16:1+efi_rts_wq08:05:142
31657992730,272cyclictest11591-21kworker/u16:4+efi_rts_wq10:40:132
31656992730,272cyclictest3415-21kworker/u16:1+efi_rts_wq08:45:141
31657992720,270cyclictest31116-21kworker/u16:2+efi_rts_wq11:10:142
31655992720,271cyclictest3415-21kworker/u16:1+efi_rts_wq07:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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