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2026-05-10 - 07:31

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 10, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318342316308,5sleep30-21swapper/319:08:313
317302316309,5sleep00-21swapper/019:07:110
317712314306,5sleep20-21swapper/219:07:422
317062314308,4sleep10-21swapper/119:06:521
32214992990,298cyclictest1336-21kworker/u16:3+efi_rts_wq00:20:132
32212992990,298cyclictest17770-21kworker/u16:3+efi_rts_wq20:05:430
32213992980,297cyclictest10508-21kworker/u16:2+efi_rts_wq22:10:121
32212992980,297cyclictest8650-21kworker/u16:2+efi_rts_wq00:00:130
32212992970,296cyclictest10508-21kworker/u16:2+efi_rts_wq22:36:120
32215992960,295cyclictest9771-21kworker/u16:1+efi_rts_wq21:00:123
32215992960,295cyclictest13930-21kworker/u16:3+efi_rts_wq21:15:133
32215992960,295cyclictest10291-21kworker/u16:2+efi_rts_wq20:20:133
32213992960,295cyclictest29758-21kworker/u16:0+efi_rts_wq00:10:111
32212992960,295cyclictest1753-21kworker/u16:0+efi_rts_wq20:40:130
32212992960,295cyclictest10291-21kworker/u16:2+efi_rts_wq20:25:130
32215992950,294cyclictest9846-21kworker/u16:0+efi_rts_wq19:25:143
32212992950,294cyclictest17770-21kworker/u16:3+efi_rts_wq20:00:420
32214992930,292cyclictest24067-21kworker/u16:3+efi_rts_wq23:00:122
32212992930,292cyclictest20464-21kworker/u16:0+efi_rts_wq22:45:130
32215992920,291cyclictest8650-21kworker/u16:2+efi_rts_wq23:50:123
32215992920,291cyclictest13492-21kworker/u16:3+efi_rts_wq23:45:123
32215992920,291cyclictest10291-21kworker/u16:2+efi_rts_wq20:55:143
32213992910,290cyclictest16837-21kworker/u16:1+efi_rts_wq23:20:151
32212992910,290cyclictest9846-21kworker/u16:0+efi_rts_wq19:15:000
32212992910,290cyclictest9771-21kworker/u16:1+efi_rts_wq20:50:120
32212992900,289cyclictest13492-21kworker/u16:3+efi_rts_wq23:51:270
32212992900,289cyclictest10291-21kworker/u16:2+efi_rts_wq21:05:560
32215992890,288cyclictest20464-21kworker/u16:0+efi_rts_wq22:15:143
32212992870,286cyclictest10291-21kworker/u16:2+efi_rts_wq20:10:440
32215992860,285cyclictest20464-21kworker/u16:0+efi_rts_wq22:20:123
32214992860,285cyclictest8650-21kworker/u16:2+efi_rts_wq23:50:122
32213992860,285cyclictest10291-21kworker/u16:2+efi_rts_wq19:35:121
32212992860,285cyclictest16837-21kworker/u16:1+efi_rts_wq23:25:120
32213992840,283cyclictest20464-21kworker/u16:0+efi_rts_wq22:40:121
32212992840,283cyclictest3402-21kworker/u16:4+efi_rts_wq00:36:360
32213992810,280cyclictest10291-21kworker/u16:2+efi_rts_wq20:55:141
32212992810,280cyclictest13930-21kworker/u16:3+efi_rts_wq21:10:130
32215992800,279cyclictest17770-21kworker/u16:3+efi_rts_wq20:30:143
32215992800,278cyclictest10508-21kworker/u16:2+efi_rts_wq22:35:113
32214992800,279cyclictest20464-21kworker/u16:0+efi_rts_wq22:30:122
32214992800,279cyclictest16837-21kworker/u16:1+efi_rts_wq23:40:122
32212992800,279cyclictest8650-21kworker/u16:2+efi_rts_wq23:21:210
32213992790,276cyclictest16837-21kworker/u16:1+efi_rts_wq23:15:131
32215992780,277cyclictest8650-21kworker/u16:2+efi_rts_wq23:36:243
32215992780,277cyclictest10508-21kworker/u16:2+efi_rts_wq22:31:113
32212992780,277cyclictest6058-21kworker/u16:1+efi_rts_wq19:40:380
32212992780,277cyclictest10291-21kworker/u16:2+efi_rts_wq21:30:130
32212992740,273cyclictest10291-21kworker/u16:2+efi_rts_wq21:40:140
32214992730,272cyclictest17770-21kworker/u16:3+efi_rts_wq20:25:472
32212992730,272cyclictest10291-21kworker/u16:2+efi_rts_wq19:50:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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