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2026-04-30 - 14:10

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 Thu Apr 30, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2131993000,299cyclictest8119-21kworker/u16:1+efi_rts_wq21:10:143
2129993000,299cyclictest7608-21kworker/u16:0+efi_rts_wq22:20:141
2129993000,299cyclictest121-21kworker/u16:5+efi_rts_wq20:30:131
2130992980,297cyclictest8119-21kworker/u16:1+efi_rts_wq19:15:142
2129992960,295cyclictest8119-21kworker/u16:1+efi_rts_wq20:50:141
2129992950,294cyclictest121-21kworker/u16:5+efi_rts_wq19:40:141
2129992940,293cyclictest7608-21kworker/u16:0+efi_rts_wq22:30:141
2129992940,293cyclictest24518-21kworker/u16:2+efi_rts_wq22:00:141
2129992940,291cyclictest8119-21kworker/u16:1+efi_rts_wq19:25:141
2128992930,292cyclictest8119-21kworker/u16:1+efi_rts_wq20:10:150
2128992920,291cyclictest24518-21kworker/u16:2+efi_rts_wq22:50:130
2129992910,290cyclictest8119-21kworker/u16:1+efi_rts_wq21:00:131
2129992910,290cyclictest8119-21kworker/u16:1+efi_rts_wq21:00:131
2128992910,290cyclictest24518-21kworker/u16:2+efi_rts_wq22:00:140
2130992900,287cyclictest6731-21kworker/u16:0+efi_rts_wq00:00:132
2128992890,288cyclictest8119-21kworker/u16:1+efi_rts_wq21:10:140
2128992880,287cyclictest7608-21kworker/u16:0+efi_rts_wq21:25:140
2131992860,285cyclictest121-21kworker/u16:5+efi_rts_wq19:30:143
2130992860,285cyclictest121-21kworker/u16:5+efi_rts_wq20:00:132
2130992850,284cyclictest121-21kworker/u16:5+efi_rts_wq20:35:152
2130992850,283cyclictest24518-21kworker/u16:2+efi_rts_wq22:50:132
2128992840,283cyclictest7608-21kworker/u16:0+efi_rts_wq22:10:130
2130992830,282cyclictest6731-21kworker/u16:0+efi_rts_wq00:20:132
2129992820,281cyclictest8119-21kworker/u16:1+efi_rts_wq19:18:481
2129992810,280cyclictest8119-21kworker/u16:1+efi_rts_wq19:45:131
2128992800,279cyclictest8119-21kworker/u16:1+efi_rts_wq20:20:140
2131992790,278cyclictest8119-21kworker/u16:1+efi_rts_wq19:25:143
2131992790,278cyclictest121-21kworker/u16:5+efi_rts_wq20:05:143
2131992780,277cyclictest7608-21kworker/u16:0+efi_rts_wq21:59:193
2129992780,277cyclictest7608-21kworker/u16:0+efi_rts_wq23:04:341
2128992770,276cyclictest121-21kworker/u16:5+efi_rts_wq20:29:030
2130992760,275cyclictest7608-21kworker/u16:0+efi_rts_wq23:20:132
2129992760,275cyclictest121-21kworker/u16:5+efi_rts_wq20:25:131
18032274235,13sleep00-21swapper/019:09:130
16612274235,13sleep30-21swapper/319:07:233
2130992730,272cyclictest7608-21kworker/u16:0+efi_rts_wq21:40:122
2131992720,271cyclictest8119-21kworker/u16:1+efi_rts_wq19:50:123
2131992720,271cyclictest24518-21kworker/u16:2+efi_rts_wq21:30:133
2131992710,270cyclictest8119-21kworker/u16:1+efi_rts_wq20:40:153
2131992710,270cyclictest121-21kworker/u16:5+efi_rts_wq20:30:133
2129992710,270cyclictest6731-21kworker/u16:0+efi_rts_wq23:50:131
2129992710,270cyclictest6731-21kworker/u16:0+efi_rts_wq00:10:131
2131992690,268cyclictest24518-21kworker/u16:2+efi_rts_wq21:45:143
2128992690,268cyclictest8119-21kworker/u16:1+efi_rts_wq19:45:130
2129992680,264cyclictest121-21kworker/u16:5+efi_rts_wq20:15:121
15472268229,13sleep10-21swapper/119:05:571
2131992660,265cyclictest8119-21kworker/u16:1+efi_rts_wq21:15:123
2128992660,265cyclictest8119-21kworker/u16:1+efi_rts_wq20:34:040
2128992660,265cyclictest24518-21kworker/u16:2+efi_rts_wq21:50:140
2130992650,264cyclictest7608-21kworker/u16:0+efi_rts_wq22:20:152
2131992620,261cyclictest24518-21kworker/u16:2+efi_rts_wq23:51:143
2129992620,261cyclictest6731-21kworker/u16:0+efi_rts_wq00:01:171
2128992620,261cyclictest15201-21kworker/u16:1+efi_rts_wq00:30:120
322052261243,11sleep20-21swapper/219:05:012
2129992570,256cyclictest6731-21kworker/u16:0+efi_rts_wq00:21:211
2130992560,255cyclictest7608-21kworker/u16:0+efi_rts_wq23:30:142
2130992540,253cyclictest121-21kworker/u16:5+efi_rts_wq20:25:142
2129992540,253cyclictest8119-21kworker/u16:1+efi_rts_wq19:35:131
2130992520,251cyclictest7608-21kworker/u16:0+efi_rts_wq22:39:292
2129992520,251cyclictest121-21kworker/u16:5+efi_rts_wq20:00:131
2129992500,249cyclictest121-21kworker/u16:5+efi_rts_wq20:55:141
2131992490,248cyclictest121-21kworker/u16:5+efi_rts_wq19:20:123
2131992490,246cyclictest24518-21kworker/u16:2+efi_rts_wq22:40:133
2131992460,245cyclictest7608-21kworker/u16:0+efi_rts_wq23:20:133
2129992460,245cyclictest121-21kworker/u16:5+efi_rts_wq19:20:121
2128992460,245cyclictest24518-21kworker/u16:2+efi_rts_wq23:44:410
2131992450,244cyclictest8119-21kworker/u16:1+efi_rts_wq19:15:023
2131992450,244cyclictest121-21kworker/u16:5+efi_rts_wq20:03:573
2129992450,244cyclictest24518-21kworker/u16:2+efi_rts_wq21:54:181
2129992440,243cyclictest24518-21kworker/u16:2+efi_rts_wq21:24:131
2128992430,242cyclictest24518-21kworker/u16:2+efi_rts_wq21:30:130
2128992410,240cyclictest121-21kworker/u16:5+efi_rts_wq19:43:530
2130992400,239cyclictest24518-21kworker/u16:2+efi_rts_wq23:40:132
2129992400,239cyclictest24518-21kworker/u16:2+efi_rts_wq22:29:271
2128992400,238cyclictest7608-21kworker/u16:0+efi_rts_wq23:10:130
2131992380,237cyclictest7608-21kworker/u16:0+efi_rts_wq23:10:133
2131992360,235cyclictest6731-21kworker/u16:0+efi_rts_wq00:20:133
2129992350,234cyclictest8119-21kworker/u16:1+efi_rts_wq20:40:141
2129992340,233cyclictest7608-21kworker/u16:0+efi_rts_wq23:10:131
2129992330,232cyclictest7608-21kworker/u16:0+efi_rts_wq21:44:171
2131992310,230cyclictest24518-21kworker/u16:2+efi_rts_wq21:35:143
2130992300,229cyclictest121-21kworker/u16:5+efi_rts_wq21:09:102
2130992280,227cyclictest8119-21kworker/u16:1+efi_rts_wq21:15:122
2131992270,226cyclictest24518-21kworker/u16:2+efi_rts_wq22:09:223
2129992250,224cyclictest8119-21kworker/u16:1+efi_rts_wq20:10:151
2129992250,224cyclictest121-21kworker/u16:5+efi_rts_wq20:45:131
2129992240,223cyclictest6731-21kworker/u16:0+efi_rts_wq00:06:181
2128992240,223cyclictest24518-21kworker/u16:2+efi_rts_wq23:46:130
2130992230,222cyclictest121-21kworker/u16:5+efi_rts_wq20:45:142
2128992210,220cyclictest24518-21kworker/u16:2+efi_rts_wq21:20:130
2129992160,215cyclictest7608-21kworker/u16:0+efi_rts_wq22:59:321
2130992140,213cyclictest15201-21kworker/u16:1+efi_rts_wq00:16:202
2131992120,211cyclictest8119-21kworker/u16:1+efi_rts_wq19:10:133
2129992110,210cyclictest8119-21kworker/u16:1+efi_rts_wq19:10:131
2128992090,208cyclictest121-21kworker/u16:5+efi_rts_wq21:05:150
2131992060,203cyclictest8119-21kworker/u16:1+efi_rts_wq21:00:133
2131992060,203cyclictest8119-21kworker/u16:1+efi_rts_wq21:00:133
2131992010,200cyclictest24518-21kworker/u16:2+efi_rts_wq22:49:303
2130991960,195cyclictest121-21kworker/u16:5+efi_rts_wq20:05:142
2131991930,192cyclictest8119-21kworker/u16:1+efi_rts_wq19:45:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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