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2026-09-08 - 14:04

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 Tue Sep 08, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
109362337312,23sleep00-21swapper/019:09:270
108012320306,4sleep10-21swapper/119:07:431
107602318311,5sleep30-21swapper/319:07:133
108242316309,5sleep20-21swapper/219:08:002
11243993040,301cyclictest12023-21kworker/u16:2+efi_rts_wq19:40:122
11243993040,301cyclictest12023-21kworker/u16:2+efi_rts_wq19:40:122
11243993010,300cyclictest12023-21kworker/u16:2+efi_rts_wq21:40:362
11241993000,299cyclictest9819-21kworker/u16:3+efi_rts_wq22:55:130
11241992990,298cyclictest9819-21kworker/u16:3+efi_rts_wq21:50:380
11244992980,297cyclictest25695-21kworker/u16:0+efi_rts_wq00:36:103
11241992980,297cyclictest12909-21kworker/u16:0+efi_rts_wq20:50:270
11244992960,295cyclictest9819-21kworker/u16:3+efi_rts_wq23:10:173
11242992960,295cyclictest11001-21kworker/u16:0+efi_rts_wq23:05:531
11243992950,294cyclictest9819-21kworker/u16:3+efi_rts_wq22:35:132
11241992950,294cyclictest9819-21kworker/u16:3+efi_rts_wq22:20:130
11243992930,291cyclictest9819-21kworker/u16:3+efi_rts_wq23:10:172
11242992920,291cyclictest12023-21kworker/u16:2+efi_rts_wq21:35:141
11244992910,290cyclictest12909-21kworker/u16:0+efi_rts_wq21:30:163
11243992910,290cyclictest12909-21kworker/u16:0+efi_rts_wq20:45:122
11241992910,290cyclictest12023-21kworker/u16:2+efi_rts_wq22:05:410
11244992890,288cyclictest12023-21kworker/u16:2+efi_rts_wq19:35:133
11242992890,288cyclictest21162-21kworker/u16:2+efi_rts_wq00:31:081
11241992880,287cyclictest20211-21kworker/u16:1+efi_rts_wq19:15:130
11244992870,286cyclictest12023-21kworker/u16:2+efi_rts_wq21:55:133
11242992870,286cyclictest11001-21kworker/u16:0+efi_rts_wq23:00:531
11241992870,286cyclictest20211-21kworker/u16:1+efi_rts_wq20:05:130
11241992860,285cyclictest12909-21kworker/u16:0+efi_rts_wq21:30:340
11243992850,284cyclictest20211-21kworker/u16:1+efi_rts_wq20:05:182
11242992850,284cyclictest25695-21kworker/u16:0+efi_rts_wq00:16:061
11244992840,283cyclictest3327-21kworker/u16:1+efi_rts_wq22:45:133
11243992840,283cyclictest9819-21kworker/u16:3+efi_rts_wq22:00:102
11243992830,281cyclictest12023-21kworker/u16:2+efi_rts_wq21:25:122
11241992830,282cyclictest9819-21kworker/u16:3+efi_rts_wq22:10:160
11244992820,281cyclictest20211-21kworker/u16:1+efi_rts_wq19:55:153
11241992820,281cyclictest11001-21kworker/u16:0+efi_rts_wq23:00:120
11244992810,280cyclictest3327-21kworker/u16:1+efi_rts_wq22:40:133
11241992810,280cyclictest25695-21kworker/u16:0+efi_rts_wq00:00:120
11241992810,280cyclictest12023-21kworker/u16:2+efi_rts_wq22:15:430
11243992800,279cyclictest12023-21kworker/u16:2+efi_rts_wq21:35:362
11242992800,279cyclictest21162-21kworker/u16:2+efi_rts_wq23:30:121
11243992780,277cyclictest12023-21kworker/u16:2+efi_rts_wq20:55:112
11241992780,277cyclictest20211-21kworker/u16:1+efi_rts_wq19:55:130
11241992770,276cyclictest12023-21kworker/u16:2+efi_rts_wq21:25:120
11241992760,275cyclictest12023-21kworker/u16:2+efi_rts_wq20:00:130
11244992740,273cyclictest25695-21kworker/u16:0+efi_rts_wq23:45:123
11242992740,273cyclictest9819-21kworker/u16:3+efi_rts_wq22:10:421
11241992740,273cyclictest21162-21kworker/u16:2+efi_rts_wq23:50:170
11241992740,273cyclictest12023-21kworker/u16:2+efi_rts_wq21:05:160
11241992740,273cyclictest12023-21kworker/u16:2+efi_rts_wq20:20:120
11244992730,272cyclictest9819-21kworker/u16:3+efi_rts_wq22:20:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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