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2026-04-28 - 12:29

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 100 highest latencies:
System rackcslot3s.osadl.org (updated Tue Apr 28, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21872324317,4sleep30-21swapper/319:06:193
21802321314,5sleep10-21swapper/119:06:121
21512319312,4sleep20-21swapper/219:05:492
2862993160,315cyclictest12414-21kworker/u16:0+efi_rts_wq23:15:211
2862993140,312cyclictest1145-21kworker/u16:1+efi_rts_wq23:30:111
21942313305,5sleep00-21swapper/019:06:230
2858993090,308cyclictest30179-21kworker/u16:3+efi_rts_wq21:05:130
2858993090,308cyclictest12414-21kworker/u16:0+efi_rts_wq23:40:120
2865993080,307cyclictest30179-21kworker/u16:3+efi_rts_wq21:40:133
2864993080,307cyclictest12414-21kworker/u16:0+efi_rts_wq00:05:132
2865993060,305cyclictest351-21kworker/u16:2+efi_rts_wq21:35:123
2865993060,305cyclictest351-21kworker/u16:2+efi_rts_wq20:50:113
2864993060,304cyclictest12414-21kworker/u16:0+efi_rts_wq23:30:232
2864993060,304cyclictest1145-21kworker/u16:1+efi_rts_wq23:10:132
2862993060,305cyclictest351-21kworker/u16:2+efi_rts_wq20:35:121
2862993060,304cyclictest1145-21kworker/u16:1+efi_rts_wq23:55:111
2865993050,304cyclictest351-21kworker/u16:2+efi_rts_wq21:45:033
2864993050,303cyclictest351-21kworker/u16:2+efi_rts_wq22:30:132
2862993030,302cyclictest12414-21kworker/u16:0+efi_rts_wq23:25:131
2858993030,300cyclictest351-21kworker/u16:2+efi_rts_wq22:00:140
2862993010,300cyclictest13740-21kworker/u16:2+efi_rts_wq00:35:121
2865993000,299cyclictest351-21kworker/u16:2+efi_rts_wq22:50:133
2865993000,299cyclictest351-21kworker/u16:2+efi_rts_wq20:20:123
2864993000,299cyclictest351-21kworker/u16:2+efi_rts_wq21:04:572
2865992990,298cyclictest30179-21kworker/u16:3+efi_rts_wq20:49:533
2862992980,297cyclictest30179-21kworker/u16:3+efi_rts_wq19:29:381
2858992980,297cyclictest351-21kworker/u16:2+efi_rts_wq21:15:140
2865992970,296cyclictest30179-21kworker/u16:3+efi_rts_wq19:30:123
2865992970,296cyclictest1145-21kworker/u16:1+efi_rts_wq23:05:143
2865992970,295cyclictest1145-21kworker/u16:1+efi_rts_wq23:10:123
2862992970,296cyclictest12414-21kworker/u16:0+efi_rts_wq00:20:141
2858992970,296cyclictest13740-21kworker/u16:2+efi_rts_wq00:15:140
2865992960,295cyclictest351-21kworker/u16:2+efi_rts_wq21:20:123
2862992960,295cyclictest30179-21kworker/u16:3+efi_rts_wq20:40:141
2858992960,295cyclictest351-21kworker/u16:2+efi_rts_wq20:25:130
2864992930,292cyclictest351-21kworker/u16:2+efi_rts_wq21:15:142
2862992920,291cyclictest30179-21kworker/u16:3+efi_rts_wq21:55:051
2865992910,290cyclictest1145-21kworker/u16:1+efi_rts_wq23:00:183
2862992910,290cyclictest13740-21kworker/u16:2+efi_rts_wq00:30:351
2864992890,288cyclictest351-21kworker/u16:2+efi_rts_wq20:05:132
2864992880,287cyclictest351-21kworker/u16:2+efi_rts_wq21:20:132
2858992880,287cyclictest12414-21kworker/u16:0+efi_rts_wq23:15:130
2865992870,286cyclictest351-21kworker/u16:2+efi_rts_wq20:30:123
2858992870,285cyclictest351-21kworker/u16:2+efi_rts_wq22:50:140
2865992860,285cyclictest12414-21kworker/u16:0+efi_rts_wq23:40:113
2862992860,285cyclictest351-21kworker/u16:2+efi_rts_wq22:45:151
2864992850,284cyclictest351-21kworker/u16:2+efi_rts_wq22:35:102
2862992810,280cyclictest30179-21kworker/u16:3+efi_rts_wq21:10:141
2858992810,279cyclictest351-21kworker/u16:2+efi_rts_wq22:55:120
2864992800,279cyclictest30179-21kworker/u16:3+efi_rts_wq21:30:142
2858992800,279cyclictest30179-21kworker/u16:3+efi_rts_wq19:25:120
2865992790,278cyclictest12414-21kworker/u16:0+efi_rts_wq00:30:123
2858992780,277cyclictest351-21kworker/u16:2+efi_rts_wq21:45:140
2865992770,276cyclictest351-21kworker/u16:2+efi_rts_wq19:50:123
2864992770,276cyclictest13740-21kworker/u16:2+efi_rts_wq00:25:142
2862992770,276cyclictest351-21kworker/u16:2+efi_rts_wq22:15:131
2862992770,276cyclictest351-21kworker/u16:2+efi_rts_wq20:00:141
2865992760,275cyclictest351-21kworker/u16:2+efi_rts_wq19:35:133
2862992750,274cyclictest30179-21kworker/u16:3+efi_rts_wq19:45:131
2864992740,273cyclictest1145-21kworker/u16:1+efi_rts_wq22:40:122
2858992730,272cyclictest351-21kworker/u16:2+efi_rts_wq20:05:130
2858992730,272cyclictest30179-21kworker/u16:3+efi_rts_wq19:45:130
2864992720,270cyclictest351-21kworker/u16:2+efi_rts_wq22:45:152
2858992720,271cyclictest30179-21kworker/u16:3+efi_rts_wq19:55:130
2864992710,270cyclictest351-21kworker/u16:2+efi_rts_wq19:34:392
2862992700,267cyclictest1145-21kworker/u16:1+efi_rts_wq23:05:131
2864992690,266cyclictest12414-21kworker/u16:0+efi_rts_wq23:20:132
2858992680,267cyclictest1145-21kworker/u16:1+efi_rts_wq23:45:270
2858992680,267cyclictest1145-21kworker/u16:1+efi_rts_wq23:45:260
2858992680,265cyclictest30179-21kworker/u16:3+efi_rts_wq22:05:120
2864992660,265cyclictest351-21kworker/u16:2+efi_rts_wq19:20:122
2864992650,264cyclictest351-21kworker/u16:2+efi_rts_wq19:50:122
2858992630,262cyclictest351-21kworker/u16:2+efi_rts_wq20:15:140
2865992560,255cyclictest1145-21kworker/u16:1+efi_rts_wq23:55:123
2864992550,254cyclictest351-21kworker/u16:2+efi_rts_wq20:50:122
2862992550,254cyclictest351-21kworker/u16:2+efi_rts_wq22:20:131
2865992530,249cyclictest12414-21kworker/u16:0+efi_rts_wq23:15:143
2858992510,250cyclictest30179-21kworker/u16:3+efi_rts_wq19:10:130
2858992510,250cyclictest1145-21kworker/u16:1+efi_rts_wq23:55:280
2864992480,247cyclictest12414-21kworker/u16:0+efi_rts_wq00:30:122
2858992480,247cyclictest351-21kworker/u16:2+efi_rts_wq20:00:140
2862992470,246cyclictest13740-21kworker/u16:2+efi_rts_wq00:10:141
2862992470,246cyclictest12414-21kworker/u16:0+efi_rts_wq23:45:151
2862992470,246cyclictest12414-21kworker/u16:0+efi_rts_wq23:45:141
2865992460,245cyclictest351-21kworker/u16:2+efi_rts_wq19:49:433
2862992460,245cyclictest30179-21kworker/u16:3+efi_rts_wq21:35:011
2858992460,245cyclictest351-21kworker/u16:2+efi_rts_wq20:20:130
2864992450,244cyclictest30179-21kworker/u16:3+efi_rts_wq19:14:362
2862992410,240cyclictest30179-21kworker/u16:3+efi_rts_wq19:30:131
2865992400,239cyclictest30179-21kworker/u16:3+efi_rts_wq19:40:133
2858992400,239cyclictest351-21kworker/u16:2+efi_rts_wq22:15:130
2864992390,238cyclictest351-21kworker/u16:2+efi_rts_wq21:35:122
2858992390,238cyclictest351-21kworker/u16:2+efi_rts_wq20:14:470
2858992380,237cyclictest30179-21kworker/u16:3+efi_rts_wq21:14:590
2865992370,236cyclictest351-21kworker/u16:2+efi_rts_wq22:00:133
2858992370,236cyclictest351-21kworker/u16:2+efi_rts_wq22:25:110
2865992350,234cyclictest351-21kworker/u16:2+efi_rts_wq21:50:133
2865992330,232cyclictest13740-21kworker/u16:2+efi_rts_wq00:35:373
2862992330,232cyclictest351-21kworker/u16:2+efi_rts_wq22:35:101
2865992310,230cyclictest30179-21kworker/u16:3+efi_rts_wq22:10:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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