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2026-08-07 - 11:41

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 Fri Aug 07, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199232320314,4sleep20-21swapper/219:08:282
182902319311,5sleep00-21swapper/019:05:130
199042315308,5sleep30-21swapper/319:08:133
200042314306,5sleep10-21swapper/119:09:311
20308993010,300cyclictest14305-21kworker/u16:1+efi_rts_wq22:50:162
20309992990,298cyclictest4234-21kworker/u16:3+efi_rts_wq19:40:133
20307992990,298cyclictest32068-21kworker/u16:2+efi_rts_wq20:25:581
20307992990,298cyclictest25944-21kworker/u16:3+efi_rts_wq00:30:141
20306992990,298cyclictest26839-21kworker/u16:2+efi_rts_wq00:05:130
20308992970,296cyclictest32080-21kworker/u16:0+efi_rts_wq21:15:122
20308992960,295cyclictest4234-21kworker/u16:3+efi_rts_wq22:35:122
20308992960,295cyclictest16819-21kworker/u16:0+efi_rts_wq22:56:302
20308992950,294cyclictest26839-21kworker/u16:2+efi_rts_wq00:00:132
20307992950,294cyclictest4234-21kworker/u16:3+efi_rts_wq19:15:131
20307992950,294cyclictest14305-21kworker/u16:1+efi_rts_wq00:20:141
20308992940,293cyclictest4234-21kworker/u16:3+efi_rts_wq19:45:122
20308992940,293cyclictest4234-21kworker/u16:3+efi_rts_wq19:15:132
20306992940,293cyclictest14305-21kworker/u16:1+efi_rts_wq00:15:140
20309992930,292cyclictest32080-21kworker/u16:0+efi_rts_wq21:25:133
20309992930,292cyclictest14305-21kworker/u16:1+efi_rts_wq23:26:363
20307992930,291cyclictest4234-21kworker/u16:3+efi_rts_wq22:30:141
20309992920,291cyclictest32080-21kworker/u16:0+efi_rts_wq22:26:253
20307992920,291cyclictest4234-21kworker/u16:3+efi_rts_wq20:20:121
20307992920,291cyclictest32068-21kworker/u16:2+efi_rts_wq20:00:141
20306992920,291cyclictest4234-21kworker/u16:3+efi_rts_wq22:35:120
20306992920,291cyclictest32080-21kworker/u16:0+efi_rts_wq21:05:120
20306992920,291cyclictest22238-21kworker/u16:3+efi_rts_wq23:15:150
20307992910,290cyclictest26839-21kworker/u16:2+efi_rts_wq00:10:121
20309992900,289cyclictest14305-21kworker/u16:1+efi_rts_wq23:30:133
20309992890,287cyclictest4234-21kworker/u16:3+efi_rts_wq22:30:133
20307992890,288cyclictest32068-21kworker/u16:2+efi_rts_wq20:10:551
20306992890,288cyclictest4234-21kworker/u16:3+efi_rts_wq20:40:110
20307992870,286cyclictest14305-21kworker/u16:1+efi_rts_wq00:26:481
20306992870,286cyclictest32080-21kworker/u16:0+efi_rts_wq22:11:230
20309992860,285cyclictest4234-21kworker/u16:3+efi_rts_wq19:10:463
20306992850,282cyclictest32080-21kworker/u16:0+efi_rts_wq21:30:120
20307992840,283cyclictest14305-21kworker/u16:1+efi_rts_wq23:31:371
20306992820,281cyclictest14305-21kworker/u16:1+efi_rts_wq23:45:130
20308992810,280cyclictest26839-21kworker/u16:2+efi_rts_wq23:46:402
20306992810,280cyclictest4234-21kworker/u16:3+efi_rts_wq20:05:140
20309992790,278cyclictest4234-21kworker/u16:3+efi_rts_wq22:35:123
20307992790,278cyclictest32068-21kworker/u16:2+efi_rts_wq19:25:131
20309992760,275cyclictest26839-21kworker/u16:2+efi_rts_wq00:05:133
20309992760,274cyclictest4234-21kworker/u16:3+efi_rts_wq19:50:133
20309992760,274cyclictest4234-21kworker/u16:3+efi_rts_wq19:50:133
20306992760,275cyclictest32080-21kworker/u16:0+efi_rts_wq20:55:130
20306992750,274cyclictest14305-21kworker/u16:1+efi_rts_wq23:50:140
20306992740,273cyclictest14305-21kworker/u16:1+efi_rts_wq22:51:290
20309992710,270cyclictest4234-21kworker/u16:3+efi_rts_wq19:15:013
20307992710,270cyclictest14305-21kworker/u16:1+efi_rts_wq00:06:461
20308992700,269cyclictest14305-21kworker/u16:1+efi_rts_wq00:25:152
20306992700,269cyclictest32068-21kworker/u16:2+efi_rts_wq20:30:130
20306992700,269cyclictest25944-21kworker/u16:3+efi_rts_wq00:36:500
20308992690,267cyclictest22238-21kworker/u16:3+efi_rts_wq23:15:152
20308992680,264cyclictest4234-21kworker/u16:3+efi_rts_wq19:10:132
20309992670,266cyclictest4234-21kworker/u16:3+efi_rts_wq21:10:123
20307992670,266cyclictest4234-21kworker/u16:3+efi_rts_wq21:11:071
20309992660,265cyclictest4234-21kworker/u16:3+efi_rts_wq21:35:133
20307992660,265cyclictest4234-21kworker/u16:3+efi_rts_wq21:45:141
20307992660,265cyclictest32068-21kworker/u16:2+efi_rts_wq20:50:101
20309992650,264cyclictest32080-21kworker/u16:0+efi_rts_wq21:00:133
20309992650,264cyclictest32068-21kworker/u16:2+efi_rts_wq20:10:123
20306992650,264cyclictest32080-21kworker/u16:0+efi_rts_wq22:25:140
20309992640,262cyclictest14305-21kworker/u16:1+efi_rts_wq23:45:123
20309992630,262cyclictest4234-21kworker/u16:3+efi_rts_wq19:55:543
20309992620,261cyclictest14305-21kworker/u16:1+efi_rts_wq00:15:143
20306992620,261cyclictest32080-21kworker/u16:0+efi_rts_wq21:25:130
20307992600,259cyclictest32080-21kworker/u16:0+efi_rts_wq21:26:121
20307992590,258cyclictest32080-21kworker/u16:0+efi_rts_wq21:20:171
20308992580,257cyclictest4234-21kworker/u16:3+efi_rts_wq20:05:142
20306992580,257cyclictest14305-21kworker/u16:1+efi_rts_wq23:00:120
20307992570,256cyclictest32068-21kworker/u16:2+efi_rts_wq19:35:121
20306992550,254cyclictest32080-21kworker/u16:0+efi_rts_wq22:15:120
20309992530,252cyclictest26839-21kworker/u16:2+efi_rts_wq23:50:143
20307992530,252cyclictest14305-21kworker/u16:1+efi_rts_wq00:15:151
20306992510,250cyclictest4234-21kworker/u16:3+efi_rts_wq19:50:130
20306992510,250cyclictest4234-21kworker/u16:3+efi_rts_wq19:50:130
20309992480,247cyclictest32068-21kworker/u16:2+efi_rts_wq19:30:133
20307992470,246cyclictest14305-21kworker/u16:1+efi_rts_wq22:50:151
20306992470,246cyclictest4234-21kworker/u16:3+efi_rts_wq21:16:080
20308992460,245cyclictest4234-21kworker/u16:3+efi_rts_wq22:05:122
20306992460,245cyclictest32080-21kworker/u16:0+efi_rts_wq22:06:210
20308992450,244cyclictest32068-21kworker/u16:2+efi_rts_wq20:50:102
20307992450,244cyclictest4234-21kworker/u16:3+efi_rts_wq20:40:111
20309992430,242cyclictest4234-21kworker/u16:3+efi_rts_wq21:21:083
20306992430,242cyclictest26839-21kworker/u16:2+efi_rts_wq23:40:130
20309992410,240cyclictest14305-21kworker/u16:1+efi_rts_wq23:11:343
20309992410,239cyclictest26839-21kworker/u16:2+efi_rts_wq23:55:133
20307992390,238cyclictest4234-21kworker/u16:3+efi_rts_wq19:30:501
20307992390,238cyclictest26839-21kworker/u16:2+efi_rts_wq23:55:131
20306992390,238cyclictest14305-21kworker/u16:1+efi_rts_wq00:11:460
20307992370,236cyclictest14305-21kworker/u16:1+efi_rts_wq23:10:121
20306992370,236cyclictest32068-21kworker/u16:2+efi_rts_wq20:35:150
20308992340,233cyclictest14305-21kworker/u16:1+efi_rts_wq23:41:392
20306992340,233cyclictest14305-21kworker/u16:1+efi_rts_wq00:00:130
20309992330,232cyclictest11742-21kworker/u16:2+efi_rts_wq22:41:283
20307992330,232cyclictest4234-21kworker/u16:3+efi_rts_wq21:55:131
20306992320,231cyclictest14305-21kworker/u16:1+efi_rts_wq00:20:130
20309992310,230cyclictest4234-21kworker/u16:3+efi_rts_wq20:45:133
20309992310,230cyclictest14305-21kworker/u16:1+efi_rts_wq23:21:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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