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2026-06-18 - 14:46

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 Jun 18, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69332325319,4sleep00-21swapper/019:05:280
72172318305,10sleep20-21swapper/219:09:102
70862318310,5sleep30-21swapper/319:07:273
70012316308,5sleep10-21swapper/119:06:211
7549992960,295cyclictest29476-21kworker/u16:2+efi_rts_wq00:20:130
7551992950,294cyclictest29476-21kworker/u16:2+efi_rts_wq23:45:122
7550992950,294cyclictest17621-21kworker/u16:2+efi_rts_wq22:00:051
7552992940,293cyclictest17621-21kworker/u16:2+efi_rts_wq22:40:153
7552992930,292cyclictest17621-21kworker/u16:2+efi_rts_wq21:04:553
7552992930,292cyclictest17621-21kworker/u16:2+efi_rts_wq20:24:473
7551992930,292cyclictest3203-21kworker/u16:0+efi_rts_wq20:09:452
7551992930,292cyclictest17621-21kworker/u16:2+efi_rts_wq22:25:122
7551992920,291cyclictest3203-21kworker/u16:0+efi_rts_wq20:00:112
7550992920,291cyclictest17621-21kworker/u16:2+efi_rts_wq21:00:121
7549992920,291cyclictest3203-21kworker/u16:0+efi_rts_wq21:25:000
7549992920,291cyclictest3203-21kworker/u16:0+efi_rts_wq20:50:130
7550992910,290cyclictest3203-21kworker/u16:0+efi_rts_wq19:40:141
7552992900,287cyclictest24913-21kworker/u16:0+efi_rts_wq23:55:133
7551992900,289cyclictest3203-21kworker/u16:0+efi_rts_wq22:15:092
7549992900,289cyclictest3203-21kworker/u16:0+efi_rts_wq20:44:520
7549992900,288cyclictest17621-21kworker/u16:2+efi_rts_wq22:45:120
7552992890,288cyclictest17621-21kworker/u16:2+efi_rts_wq19:45:123
7550992890,288cyclictest17621-21kworker/u16:2+efi_rts_wq20:45:111
7552992880,287cyclictest8022-21kworker/u16:3+efi_rts_wq23:20:123
7552992880,287cyclictest3203-21kworker/u16:0+efi_rts_wq23:15:123
7552992880,287cyclictest3203-21kworker/u16:0+efi_rts_wq21:40:033
7551992880,287cyclictest3203-21kworker/u16:0+efi_rts_wq22:35:122
7551992880,287cyclictest3203-21kworker/u16:0+efi_rts_wq22:00:112
7551992880,287cyclictest29476-21kworker/u16:2+efi_rts_wq00:05:152
7550992880,287cyclictest17621-21kworker/u16:2+efi_rts_wq20:30:101
7552992870,286cyclictest3203-21kworker/u16:0+efi_rts_wq19:15:123
7551992860,285cyclictest3203-21kworker/u16:0+efi_rts_wq23:15:122
7552992840,283cyclictest17621-21kworker/u16:2+efi_rts_wq19:50:133
7549992830,282cyclictest29476-21kworker/u16:2+efi_rts_wq00:10:120
7552992820,281cyclictest29476-21kworker/u16:2+efi_rts_wq00:21:113
7550992800,279cyclictest3203-21kworker/u16:0+efi_rts_wq20:25:121
7552992790,278cyclictest3203-21kworker/u16:0+efi_rts_wq22:55:123
7549992790,278cyclictest3203-21kworker/u16:0+efi_rts_wq20:35:120
7549992790,278cyclictest3203-21kworker/u16:0+efi_rts_wq19:10:130
7550992770,276cyclictest3203-21kworker/u16:0+efi_rts_wq23:05:141
7550992770,276cyclictest29476-21kworker/u16:2+efi_rts_wq00:31:141
7550992760,275cyclictest17621-21kworker/u16:2+efi_rts_wq21:25:111
7551992750,274cyclictest3203-21kworker/u16:0+efi_rts_wq20:59:542
7550992750,274cyclictest24913-21kworker/u16:0+efi_rts_wq00:11:101
7552992740,273cyclictest17621-21kworker/u16:2+efi_rts_wq21:10:113
7549992740,272cyclictest8022-21kworker/u16:3+efi_rts_wq23:00:120
7551992730,272cyclictest3203-21kworker/u16:0+efi_rts_wq22:30:112
7551992720,271cyclictest17621-21kworker/u16:2+efi_rts_wq20:15:112
7551992720,270cyclictest18464-21kworker/u16:1+efi_rts_wq23:35:122
7551992710,270cyclictest3203-21kworker/u16:0+efi_rts_wq20:35:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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