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2026-04-30 - 19:21

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 Thu Apr 30, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199392336314,5sleep30-21swapper/307:09:353
196552314306,5sleep00-21swapper/007:05:550
196392314308,4sleep10-21swapper/107:05:441
197452313307,4sleep20-21swapper/207:07:052
20240993020,301cyclictest8524-21kworker/u16:1+efi_rts_wq08:25:122
20240993020,299cyclictest13541-21kworker/u16:1+efi_rts_wq11:05:132
20240993010,298cyclictest10154-21kworker/u16:1+efi_rts_wq12:35:132
20240992990,298cyclictest7711-21kworker/u16:0+efi_rts_wq12:30:122
20239992960,295cyclictest25930-21kworker/u16:2+efi_rts_wq10:35:121
20241992950,294cyclictest8524-21kworker/u16:1+efi_rts_wq07:22:433
20239992950,294cyclictest8524-21kworker/u16:1+efi_rts_wq09:40:141
20239992950,294cyclictest7711-21kworker/u16:0+efi_rts_wq12:20:111
20241992940,293cyclictest25930-21kworker/u16:2+efi_rts_wq10:00:133
20239992940,293cyclictest10154-21kworker/u16:1+efi_rts_wq11:55:131
20241992930,292cyclictest8524-21kworker/u16:1+efi_rts_wq09:38:103
20241992920,291cyclictest8524-21kworker/u16:1+efi_rts_wq09:53:133
20239992910,290cyclictest8524-21kworker/u16:1+efi_rts_wq08:12:531
20238992910,288cyclictest8524-21kworker/u16:1+efi_rts_wq09:55:140
20241992900,289cyclictest25930-21kworker/u16:2+efi_rts_wq10:48:223
20241992900,289cyclictest16515-21kworker/u16:3+efi_rts_wq08:07:523
20241992900,288cyclictest23721-21kworker/u16:3+efi_rts_wq11:10:133
20238992900,289cyclictest23721-21kworker/u16:3+efi_rts_wq11:40:120
20240992890,288cyclictest25930-21kworker/u16:2+efi_rts_wq11:15:122
20240992890,288cyclictest25930-21kworker/u16:2+efi_rts_wq10:50:112
20239992890,288cyclictest25930-21kworker/u16:2+efi_rts_wq11:00:141
20241992880,287cyclictest7711-21kworker/u16:0+efi_rts_wq12:38:373
20240992880,287cyclictest8524-21kworker/u16:1+efi_rts_wq09:30:152
20239992880,287cyclictest25670-21kworker/u16:0+efi_rts_wq10:05:291
20240992860,285cyclictest16515-21kworker/u16:3+efi_rts_wq07:10:092
20240992850,284cyclictest8524-21kworker/u16:1+efi_rts_wq07:45:122
20240992850,284cyclictest8524-21kworker/u16:1+efi_rts_wq07:45:122
20238992850,284cyclictest25670-21kworker/u16:0+efi_rts_wq10:45:130
20239992840,283cyclictest25670-21kworker/u16:0+efi_rts_wq10:25:131
20239992820,281cyclictest10154-21kworker/u16:1+efi_rts_wq12:15:111
20239992810,280cyclictest8524-21kworker/u16:1+efi_rts_wq07:57:501
20241992800,279cyclictest16515-21kworker/u16:3+efi_rts_wq08:10:123
20241992800,279cyclictest10154-21kworker/u16:1+efi_rts_wq12:15:113
20240992800,279cyclictest8524-21kworker/u16:1+efi_rts_wq09:25:132
20239992800,279cyclictest25930-21kworker/u16:2+efi_rts_wq10:13:171
20239992790,277cyclictest16515-21kworker/u16:3+efi_rts_wq07:25:131
20241992780,277cyclictest23721-21kworker/u16:3+efi_rts_wq11:33:283
20240992770,276cyclictest25930-21kworker/u16:2+efi_rts_wq11:35:142
20239992760,275cyclictest10154-21kworker/u16:1+efi_rts_wq12:30:121
20241992740,273cyclictest25930-21kworker/u16:2+efi_rts_wq10:20:113
20238992740,273cyclictest25930-21kworker/u16:2+efi_rts_wq10:10:150
20241992730,272cyclictest10154-21kworker/u16:1+efi_rts_wq12:13:333
20239992720,271cyclictest10154-21kworker/u16:1+efi_rts_wq12:05:121
20241992710,270cyclictest25930-21kworker/u16:2+efi_rts_wq11:25:133
20240992710,270cyclictest25930-21kworker/u16:2+efi_rts_wq11:00:142
20240992680,267cyclictest25670-21kworker/u16:0+efi_rts_wq10:05:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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