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2026-06-05 - 08:09

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 Jun 05, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237902338315,5sleep30-21swapper/319:09:543
237122327305,5sleep00-21swapper/019:08:550
234552318312,4sleep20-21swapper/219:05:362
235892316309,5sleep10-21swapper/119:07:191
24063993010,300cyclictest8898-21kworker/u16:1+efi_rts_wq21:40:131
24065992990,298cyclictest28346-21kworker/u16:2+efi_rts_wq23:45:143
24065992970,296cyclictest8898-21kworker/u16:1+efi_rts_wq23:55:133
24065992970,296cyclictest8898-21kworker/u16:1+efi_rts_wq00:20:123
24062992970,296cyclictest8898-21kworker/u16:1+efi_rts_wq19:45:120
24062992970,295cyclictest8898-21kworker/u16:1+efi_rts_wq20:35:130
24062992960,295cyclictest8898-21kworker/u16:1+efi_rts_wq22:00:130
24063992950,294cyclictest5060-21kworker/u16:0+efi_rts_wq22:40:121
24064992940,293cyclictest8898-21kworker/u16:1+efi_rts_wq21:05:132
24063992940,293cyclictest8898-21kworker/u16:1+efi_rts_wq22:50:141
24063992940,293cyclictest8898-21kworker/u16:1+efi_rts_wq20:10:101
24063992930,292cyclictest25676-21kworker/u16:3+efi_rts_wq19:14:371
24065992920,291cyclictest8898-21kworker/u16:1+efi_rts_wq22:10:133
24065992920,291cyclictest8898-21kworker/u16:1+efi_rts_wq21:45:123
24065992920,291cyclictest25676-21kworker/u16:3+efi_rts_wq20:19:483
24063992900,289cyclictest25676-21kworker/u16:3+efi_rts_wq19:30:121
24065992890,288cyclictest25676-21kworker/u16:3+efi_rts_wq21:25:143
24062992890,288cyclictest8898-21kworker/u16:1+efi_rts_wq00:25:360
24065992880,287cyclictest8898-21kworker/u16:1+efi_rts_wq20:55:113
24065992880,287cyclictest25676-21kworker/u16:3+efi_rts_wq19:20:133
24065992840,283cyclictest8898-21kworker/u16:1+efi_rts_wq21:35:123
24065992840,283cyclictest8898-21kworker/u16:1+efi_rts_wq19:25:113
24062992840,283cyclictest8898-21kworker/u16:1+efi_rts_wq22:50:130
24062992840,283cyclictest25676-21kworker/u16:3+efi_rts_wq20:50:120
24065992830,282cyclictest8898-21kworker/u16:1+efi_rts_wq21:20:143
24064992830,282cyclictest28346-21kworker/u16:2+efi_rts_wq00:30:092
24064992820,280cyclictest25676-21kworker/u16:3+efi_rts_wq19:30:122
24063992820,281cyclictest28346-21kworker/u16:2+efi_rts_wq23:35:121
24065992810,280cyclictest8898-21kworker/u16:1+efi_rts_wq00:10:123
24065992810,280cyclictest8898-21kworker/u16:1+efi_rts_wq00:10:113
24065992810,280cyclictest25676-21kworker/u16:3+efi_rts_wq21:20:003
24064992810,280cyclictest25676-21kworker/u16:3+efi_rts_wq19:20:132
24063992810,280cyclictest8898-21kworker/u16:1+efi_rts_wq21:50:131
24063992810,280cyclictest25676-21kworker/u16:3+efi_rts_wq20:05:131
24062992810,280cyclictest28346-21kworker/u16:2+efi_rts_wq23:20:130
24065992800,279cyclictest8898-21kworker/u16:1+efi_rts_wq21:00:113
24063992800,279cyclictest8898-21kworker/u16:1+efi_rts_wq00:00:121
24065992780,276cyclictest25676-21kworker/u16:3+efi_rts_wq20:40:113
24063992780,277cyclictest8898-21kworker/u16:1+efi_rts_wq00:10:321
24063992780,277cyclictest8898-21kworker/u16:1+efi_rts_wq00:10:311
24063992760,275cyclictest8898-21kworker/u16:1+efi_rts_wq19:45:121
24065992750,274cyclictest8898-21kworker/u16:1+efi_rts_wq21:10:123
24062992750,274cyclictest28346-21kworker/u16:2+efi_rts_wq23:15:200
24065992730,272cyclictest25676-21kworker/u16:3+efi_rts_wq19:10:123
24064992720,271cyclictest8898-21kworker/u16:1+efi_rts_wq00:25:142
24062992720,271cyclictest25676-21kworker/u16:3+efi_rts_wq19:40:120
24065992710,270cyclictest25676-21kworker/u16:3+efi_rts_wq22:05:123
24064992690,268cyclictest8898-21kworker/u16:1+efi_rts_wq21:55:052
24062992690,268cyclictest8898-21kworker/u16:1+efi_rts_wq23:10:130
24062992690,267cyclictest5060-21kworker/u16:0+efi_rts_wq22:45:130
24064992680,267cyclictest8898-21kworker/u16:1+efi_rts_wq20:20:122
24064992680,267cyclictest28346-21kworker/u16:2+efi_rts_wq00:05:142
24063992680,267cyclictest25676-21kworker/u16:3+efi_rts_wq19:44:431
24065992670,266cyclictest5060-21kworker/u16:0+efi_rts_wq22:55:143
24063992670,266cyclictest28346-21kworker/u16:2+efi_rts_wq23:25:231
24063992670,266cyclictest25676-21kworker/u16:3+efi_rts_wq19:50:111
24062992640,263cyclictest8898-21kworker/u16:1+efi_rts_wq20:04:450
24063992630,262cyclictest25676-21kworker/u16:3+efi_rts_wq20:44:531
24062992630,262cyclictest28346-21kworker/u16:2+efi_rts_wq23:30:240
24064992620,261cyclictest28346-21kworker/u16:2+efi_rts_wq23:10:112
24062992620,261cyclictest5060-21kworker/u16:0+efi_rts_wq22:35:130
24062992610,260cyclictest8898-21kworker/u16:1+efi_rts_wq22:30:120
24062992610,260cyclictest25676-21kworker/u16:3+efi_rts_wq21:55:140
24063992600,259cyclictest8898-21kworker/u16:1+efi_rts_wq22:15:091
24064992580,257cyclictest8898-21kworker/u16:1+efi_rts_wq19:25:112
24062992580,257cyclictest8898-21kworker/u16:1+efi_rts_wq23:05:120
24064992570,256cyclictest8898-21kworker/u16:1+efi_rts_wq23:05:132
24064992570,256cyclictest28346-21kworker/u16:2+efi_rts_wq23:40:262
24065992560,255cyclictest8898-21kworker/u16:1+efi_rts_wq21:30:133
24062992560,255cyclictest8898-21kworker/u16:1+efi_rts_wq20:59:550
24065992540,253cyclictest8898-21kworker/u16:1+efi_rts_wq19:55:113
24064992540,253cyclictest8898-21kworker/u16:1+efi_rts_wq23:30:122
24065992530,252cyclictest5060-21kworker/u16:0+efi_rts_wq22:30:123
24063992530,252cyclictest8898-21kworker/u16:1+efi_rts_wq20:45:121
24065992520,251cyclictest8898-21kworker/u16:1+efi_rts_wq00:35:143
24063992500,249cyclictest28346-21kworker/u16:2+efi_rts_wq00:05:141
24062992480,247cyclictest5060-21kworker/u16:0+efi_rts_wq23:00:140
24065992440,243cyclictest5060-21kworker/u16:0+efi_rts_wq22:25:133
24065992430,242cyclictest25676-21kworker/u16:3+efi_rts_wq19:15:013
24064992410,240cyclictest25676-21kworker/u16:3+efi_rts_wq20:25:132
24062992360,235cyclictest25676-21kworker/u16:3+efi_rts_wq21:30:010
24065992330,232cyclictest8898-21kworker/u16:1+efi_rts_wq20:20:123
24063992330,232cyclictest8898-21kworker/u16:1+efi_rts_wq20:30:111
24065992300,229cyclictest28346-21kworker/u16:2+efi_rts_wq00:15:143
24063992300,229cyclictest25676-21kworker/u16:3+efi_rts_wq21:15:121
24063992290,228cyclictest25676-21kworker/u16:3+efi_rts_wq22:10:071
24062992290,228cyclictest8898-21kworker/u16:1+efi_rts_wq22:25:110
24063992280,227cyclictest8898-21kworker/u16:1+efi_rts_wq00:20:341
24062992280,226cyclictest8898-21kworker/u16:1+efi_rts_wq19:55:120
24065992270,226cyclictest8898-21kworker/u16:1+efi_rts_wq23:05:133
24063992270,225cyclictest8898-21kworker/u16:1+efi_rts_wq23:15:131
24062992260,225cyclictest25676-21kworker/u16:3+efi_rts_wq19:10:120
24062992250,224cyclictest25676-21kworker/u16:3+efi_rts_wq20:15:120
24064992240,223cyclictest25676-21kworker/u16:3+efi_rts_wq22:15:122
24065992200,219cyclictest28346-21kworker/u16:2+efi_rts_wq23:20:123
24065992170,216cyclictest8898-21kworker/u16:1+efi_rts_wq23:00:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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