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2026-06-09 - 10:45

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 Jun 09, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
168382321315,4sleep30-21swapper/319:07:383
167572318310,5sleep20-21swapper/219:06:372
169132317309,5sleep10-21swapper/119:08:361
167182313307,4sleep00-21swapper/019:06:070
17287993030,302cyclictest16547-21kworker/u16:1+efi_rts_wq22:55:131
17289992990,298cyclictest26231-21kworker/u16:3+efi_rts_wq20:10:133
17286992990,298cyclictest7985-21kworker/u16:2+efi_rts_wq21:15:120
17286992970,296cyclictest26231-21kworker/u16:3+efi_rts_wq21:55:110
17287992960,295cyclictest26231-21kworker/u16:3+efi_rts_wq20:05:161
17286992960,295cyclictest1322-21kworker/u16:3+efi_rts_wq00:10:370
17286992950,294cyclictest11494-21kworker/u16:2+efi_rts_wq23:40:120
17289992940,293cyclictest7985-21kworker/u16:2+efi_rts_wq20:15:133
17287992940,293cyclictest26231-21kworker/u16:3+efi_rts_wq22:45:121
17286992940,293cyclictest26231-21kworker/u16:3+efi_rts_wq19:45:130
17286992930,292cyclictest26231-21kworker/u16:3+efi_rts_wq21:00:050
17287992920,291cyclictest26231-21kworker/u16:3+efi_rts_wq19:50:121
17287992920,291cyclictest14123-21kworker/u16:0+efi_rts_wq22:25:111
17286992920,291cyclictest11494-21kworker/u16:2+efi_rts_wq00:20:390
17289992910,290cyclictest14123-21kworker/u16:0+efi_rts_wq22:40:123
17288992910,290cyclictest26231-21kworker/u16:3+efi_rts_wq22:00:162
17288992910,290cyclictest26231-21kworker/u16:3+efi_rts_wq21:35:122
17288992910,290cyclictest26231-21kworker/u16:3+efi_rts_wq21:10:122
17289992870,286cyclictest11494-21kworker/u16:2+efi_rts_wq23:20:293
17287992870,286cyclictest7985-21kworker/u16:2+efi_rts_wq19:49:511
17286992870,286cyclictest7985-21kworker/u16:2+efi_rts_wq21:25:110
17286992870,286cyclictest26231-21kworker/u16:3+efi_rts_wq20:35:130
17286992870,286cyclictest1322-21kworker/u16:3+efi_rts_wq00:25:140
17287992860,285cyclictest16547-21kworker/u16:1+efi_rts_wq23:10:121
17286992850,284cyclictest7985-21kworker/u16:2+efi_rts_wq20:25:120
17289992830,282cyclictest555-21kworker/u16:0+efi_rts_wq19:29:483
17288992830,282cyclictest14123-21kworker/u16:0+efi_rts_wq22:40:232
17286992830,282cyclictest7985-21kworker/u16:2+efi_rts_wq21:50:140
17287992820,281cyclictest26231-21kworker/u16:3+efi_rts_wq20:24:581
17288992810,280cyclictest26231-21kworker/u16:3+efi_rts_wq20:05:152
17286992810,280cyclictest7985-21kworker/u16:2+efi_rts_wq20:55:120
17287992780,277cyclictest7985-21kworker/u16:2+efi_rts_wq19:10:131
17287992780,277cyclictest555-21kworker/u16:0+efi_rts_wq19:25:131
17287992780,277cyclictest26231-21kworker/u16:3+efi_rts_wq19:39:491
17286992780,277cyclictest7985-21kworker/u16:2+efi_rts_wq20:00:120
17286992770,276cyclictest16547-21kworker/u16:1+efi_rts_wq23:05:260
17289992750,274cyclictest555-21kworker/u16:0+efi_rts_wq19:20:123
17289992750,274cyclictest1322-21kworker/u16:3+efi_rts_wq00:25:403
17287992750,274cyclictest555-21kworker/u16:0+efi_rts_wq19:30:131
17289992740,273cyclictest27073-21kworker/u16:3+efi_rts_wq23:15:103
17286992740,272cyclictest1322-21kworker/u16:3+efi_rts_wq23:50:120
17288992730,272cyclictest1322-21kworker/u16:3+efi_rts_wq23:45:132
17287992730,272cyclictest1322-21kworker/u16:3+efi_rts_wq23:35:121
17289992720,271cyclictest1322-21kworker/u16:3+efi_rts_wq00:30:123
17286992710,270cyclictest1322-21kworker/u16:3+efi_rts_wq00:30:120
17289992700,269cyclictest7985-21kworker/u16:2+efi_rts_wq19:40:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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