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2026-06-21 - 15:58

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 Jun 21, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
270852333311,4sleep20-21swapper/207:08:522
269132326319,5sleep30-21swapper/307:06:403
268642318303,5sleep10-21swapper/107:06:021
268232315307,5sleep00-21swapper/007:05:290
27438993040,301cyclictest27449-21kworker/u16:2+efi_rts_wq10:20:120
27441993010,300cyclictest1873-21kworker/u16:2+efi_rts_wq12:25:123
27439992990,298cyclictest20928-21kworker/u16:3+efi_rts_wq09:10:121
27438992990,298cyclictest20928-21kworker/u16:3+efi_rts_wq07:35:130
27439992980,297cyclictest20928-21kworker/u16:3+efi_rts_wq07:31:581
27438992980,297cyclictest24048-21kworker/u16:0+efi_rts_wq12:20:120
27441992950,294cyclictest20928-21kworker/u16:3+efi_rts_wq09:30:133
27441992950,294cyclictest1873-21kworker/u16:2+efi_rts_wq11:50:123
27440992950,293cyclictest27449-21kworker/u16:2+efi_rts_wq10:45:142
27439992950,294cyclictest27449-21kworker/u16:2+efi_rts_wq10:30:131
27440992940,293cyclictest24048-21kworker/u16:0+efi_rts_wq10:55:132
27440992940,293cyclictest1873-21kworker/u16:2+efi_rts_wq11:40:102
27441992900,289cyclictest24048-21kworker/u16:0+efi_rts_wq11:15:133
27440992900,289cyclictest20928-21kworker/u16:3+efi_rts_wq07:10:132
27440992890,288cyclictest28847-21kworker/u16:0+efi_rts_wq07:15:142
27440992890,288cyclictest27449-21kworker/u16:2+efi_rts_wq08:35:142
27440992860,285cyclictest24048-21kworker/u16:0+efi_rts_wq11:00:132
27439992860,285cyclictest24048-21kworker/u16:0+efi_rts_wq12:20:121
27441992850,284cyclictest20928-21kworker/u16:3+efi_rts_wq07:45:113
27441992850,284cyclictest1873-21kworker/u16:2+efi_rts_wq11:20:123
27440992850,284cyclictest20928-21kworker/u16:3+efi_rts_wq09:47:232
27439992840,283cyclictest24048-21kworker/u16:0+efi_rts_wq11:37:461
27438992840,283cyclictest27449-21kworker/u16:2+efi_rts_wq10:10:140
27441992830,282cyclictest28847-21kworker/u16:0+efi_rts_wq07:20:133
27441992830,282cyclictest27449-21kworker/u16:2+efi_rts_wq09:05:133
27439992830,282cyclictest1873-21kworker/u16:2+efi_rts_wq11:27:441
27440992820,281cyclictest27449-21kworker/u16:2+efi_rts_wq08:00:132
27440992820,281cyclictest27449-21kworker/u16:2+efi_rts_wq07:26:572
27439992820,281cyclictest27449-21kworker/u16:2+efi_rts_wq10:00:131
27439992820,281cyclictest24048-21kworker/u16:0+efi_rts_wq11:00:121
27438992800,279cyclictest24048-21kworker/u16:0+efi_rts_wq12:30:130
27439992780,277cyclictest1873-21kworker/u16:2+efi_rts_wq11:30:111
27439992760,275cyclictest20928-21kworker/u16:3+efi_rts_wq08:05:141
27438992760,275cyclictest24048-21kworker/u16:0+efi_rts_wq12:10:110
27441992730,270cyclictest27449-21kworker/u16:2+efi_rts_wq07:25:123
27441992710,270cyclictest20928-21kworker/u16:3+efi_rts_wq08:25:123
27441992700,269cyclictest20928-21kworker/u16:3+efi_rts_wq07:36:593
27440992700,269cyclictest27449-21kworker/u16:2+efi_rts_wq07:50:142
27439992700,269cyclictest24048-21kworker/u16:0+efi_rts_wq12:02:501
27441992690,268cyclictest20928-21kworker/u16:3+efi_rts_wq09:27:193
27439992690,268cyclictest1873-21kworker/u16:2+efi_rts_wq12:32:561
27438992690,268cyclictest28847-21kworker/u16:0+efi_rts_wq07:16:560
27439992680,267cyclictest27449-21kworker/u16:2+efi_rts_wq10:22:311
27439992670,266cyclictest20928-21kworker/u16:3+efi_rts_wq07:55:111
27438992640,263cyclictest20928-21kworker/u16:3+efi_rts_wq09:57:250
27438992640,263cyclictest20928-21kworker/u16:3+efi_rts_wq09:35:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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