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2026-05-03 - 22:39

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 May 03, 2026 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
238732316308,5sleep20-21swapper/207:09:452
235452315308,5sleep30-21swapper/307:05:333
237932313306,4sleep10-21swapper/107:08:431
236092313306,5sleep00-21swapper/007:06:220
24159992980,297cyclictest8105-21kworker/u16:2+efi_rts_wq10:45:133
24158992980,297cyclictest20596-21kworker/u16:3+efi_rts_wq10:55:132
24159992970,296cyclictest20596-21kworker/u16:3+efi_rts_wq09:00:133
24154992960,295cyclictest8105-21kworker/u16:2+efi_rts_wq07:40:120
24157992930,292cyclictest20596-21kworker/u16:3+efi_rts_wq10:35:131
24159992920,291cyclictest27118-21kworker/u16:0+efi_rts_wq11:15:133
24157992920,291cyclictest9564-21kworker/u16:0+efi_rts_wq12:38:251
24157992910,290cyclictest20596-21kworker/u16:3+efi_rts_wq10:28:021
24154992910,290cyclictest20596-21kworker/u16:3+efi_rts_wq07:52:270
24154992910,290cyclictest20596-21kworker/u16:3+efi_rts_wq07:52:270
24159992900,289cyclictest2237-21kworker/u16:2+efi_rts_wq11:43:163
24159992900,289cyclictest20596-21kworker/u16:3+efi_rts_wq07:47:263
24157992900,289cyclictest20596-21kworker/u16:3+efi_rts_wq08:55:121
24157992900,289cyclictest20596-21kworker/u16:3+efi_rts_wq08:20:131
24159992880,286cyclictest27118-21kworker/u16:0+efi_rts_wq11:10:123
24157992860,285cyclictest8105-21kworker/u16:2+efi_rts_wq10:10:111
24159992840,283cyclictest20596-21kworker/u16:3+efi_rts_wq08:45:133
24157992840,283cyclictest8105-21kworker/u16:2+efi_rts_wq08:35:121
24157992840,283cyclictest2237-21kworker/u16:2+efi_rts_wq12:18:221
24159992830,282cyclictest2237-21kworker/u16:2+efi_rts_wq11:45:133
24159992820,281cyclictest20596-21kworker/u16:3+efi_rts_wq09:40:133
24158992820,280cyclictest2237-21kworker/u16:2+efi_rts_wq11:38:132
24159992810,280cyclictest20596-21kworker/u16:3+efi_rts_wq10:12:593
24154992810,280cyclictest20596-21kworker/u16:3+efi_rts_wq09:20:120
24154992790,278cyclictest8105-21kworker/u16:2+efi_rts_wq10:30:110
24159992750,274cyclictest20596-21kworker/u16:3+efi_rts_wq08:50:133
24159992730,272cyclictest27118-21kworker/u16:0+efi_rts_wq11:00:133
24159992730,272cyclictest20596-21kworker/u16:3+efi_rts_wq07:10:133
24157992730,272cyclictest20596-21kworker/u16:3+efi_rts_wq10:20:121
24157992730,272cyclictest20596-21kworker/u16:3+efi_rts_wq10:15:131
24157992730,272cyclictest20596-21kworker/u16:3+efi_rts_wq09:15:121
24159992720,271cyclictest8105-21kworker/u16:2+efi_rts_wq09:17:493
24158992700,268cyclictest9564-21kworker/u16:0+efi_rts_wq11:55:142
24154992700,269cyclictest9564-21kworker/u16:0+efi_rts_wq11:40:130
24157992680,267cyclictest20596-21kworker/u16:3+efi_rts_wq09:50:121
24154992680,266cyclictest20596-21kworker/u16:3+efi_rts_wq11:05:120
24159992660,265cyclictest8105-21kworker/u16:2+efi_rts_wq07:57:293
24159992660,265cyclictest8105-21kworker/u16:2+efi_rts_wq07:57:283
24154992650,264cyclictest9564-21kworker/u16:0+efi_rts_wq12:05:120
24159992640,263cyclictest20596-21kworker/u16:3+efi_rts_wq07:15:013
24157992640,263cyclictest8105-21kworker/u16:2+efi_rts_wq09:42:541
24157992640,263cyclictest27118-21kworker/u16:0+efi_rts_wq11:08:081
24157992640,263cyclictest20596-21kworker/u16:3+efi_rts_wq10:40:131
24157992640,262cyclictest20596-21kworker/u16:3+efi_rts_wq10:05:141
24154992640,263cyclictest8105-21kworker/u16:2+efi_rts_wq08:25:140
24154992640,263cyclictest8105-21kworker/u16:2+efi_rts_wq07:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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