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2025-11-23 - 06:45

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 100 highest latencies:
System rackcslot3s.osadl.org (updated Sun Nov 23, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34672334312,5sleep30-21swapper/319:09:193
34402315308,5sleep10-21swapper/119:08:571
32122315308,5sleep20-21swapper/219:06:012
32152314306,5sleep00-21swapper/019:06:030
3790993020,299cyclictest20978-21kworker/u16:2+efi_rts_wq21:40:142
3790993010,300cyclictest384-21kworker/u16:3+efi_rts_wq23:05:122
3789993000,299cyclictest20978-21kworker/u16:2+efi_rts_wq21:05:141
3791992990,297cyclictest20141-21kworker/u16:1+efi_rts_wq23:55:163
3790992980,297cyclictest20978-21kworker/u16:2+efi_rts_wq21:45:072
3788992980,297cyclictest30335-21kworker/u16:0+efi_rts_wq23:45:310
3790992970,296cyclictest3838-21kworker/u16:1+efi_rts_wq22:25:132
3790992970,295cyclictest30335-21kworker/u16:0+efi_rts_wq22:50:152
3789992970,295cyclictest3838-21kworker/u16:1+efi_rts_wq22:35:171
3790992940,293cyclictest20978-21kworker/u16:2+efi_rts_wq19:55:152
3788992940,293cyclictest384-21kworker/u16:3+efi_rts_wq23:00:230
3790992930,292cyclictest384-21kworker/u16:3+efi_rts_wq23:10:132
3790992920,291cyclictest20978-21kworker/u16:2+efi_rts_wq21:55:142
3790992910,290cyclictest3838-21kworker/u16:1+efi_rts_wq21:50:082
3788992910,290cyclictest20978-21kworker/u16:2+efi_rts_wq20:24:520
3791992900,289cyclictest3838-21kworker/u16:1+efi_rts_wq20:20:143
3789992900,289cyclictest3838-21kworker/u16:1+efi_rts_wq20:15:151
3788992900,289cyclictest20978-21kworker/u16:2+efi_rts_wq20:40:140
3789992890,288cyclictest3838-21kworker/u16:1+efi_rts_wq22:25:131
3789992880,287cyclictest20978-21kworker/u16:2+efi_rts_wq19:30:151
3790992870,286cyclictest3838-21kworker/u16:1+efi_rts_wq19:34:412
3791992850,284cyclictest20141-21kworker/u16:1+efi_rts_wq23:30:283
3788992840,283cyclictest20141-21kworker/u16:1+efi_rts_wq23:30:130
3791992830,282cyclictest1415-21kworker/u16:3+efi_rts_wq00:30:143
3788992830,282cyclictest3838-21kworker/u16:1+efi_rts_wq22:20:130
3788992820,281cyclictest3838-21kworker/u16:1+efi_rts_wq19:15:130
3788992820,280cyclictest384-21kworker/u16:3+efi_rts_wq23:25:150
3791992810,280cyclictest384-21kworker/u16:3+efi_rts_wq23:00:133
3788992810,279cyclictest3838-21kworker/u16:1+efi_rts_wq22:45:130
3790992800,279cyclictest20141-21kworker/u16:1+efi_rts_wq23:50:122
3789992790,278cyclictest30335-21kworker/u16:0+efi_rts_wq00:25:141
3789992790,278cyclictest20141-21kworker/u16:1+efi_rts_wq23:55:161
3791992780,277cyclictest384-21kworker/u16:3+efi_rts_wq23:10:143
3791992780,277cyclictest3838-21kworker/u16:1+efi_rts_wq19:45:133
3791992780,277cyclictest20978-21kworker/u16:2+efi_rts_wq21:55:143
3789992780,277cyclictest3838-21kworker/u16:1+efi_rts_wq22:40:131
3789992760,275cyclictest30335-21kworker/u16:0+efi_rts_wq23:15:251
3790992750,274cyclictest3838-21kworker/u16:1+efi_rts_wq21:35:052
3788992750,274cyclictest3838-21kworker/u16:1+efi_rts_wq21:04:590
3788992740,273cyclictest3838-21kworker/u16:1+efi_rts_wq22:15:130
3791992730,272cyclictest20978-21kworker/u16:2+efi_rts_wq21:30:123
3790992730,272cyclictest20978-21kworker/u16:2+efi_rts_wq20:35:142
3790992730,270cyclictest20978-21kworker/u16:2+efi_rts_wq21:05:142
3789992730,272cyclictest30335-21kworker/u16:0+efi_rts_wq23:45:141
3788992730,271cyclictest20141-21kworker/u16:1+efi_rts_wq23:40:130
3791992720,271cyclictest20978-21kworker/u16:2+efi_rts_wq21:00:133
3791992680,267cyclictest3838-21kworker/u16:1+efi_rts_wq20:15:153
3791992680,267cyclictest20978-21kworker/u16:2+efi_rts_wq19:30:143
3791992680,267cyclictest1415-21kworker/u16:3+efi_rts_wq00:10:133
3790992670,266cyclictest3838-21kworker/u16:1+efi_rts_wq22:05:122
3790992670,266cyclictest1415-21kworker/u16:3+efi_rts_wq00:25:392
3790992640,263cyclictest3838-21kworker/u16:1+efi_rts_wq19:45:132
3789992630,260cyclictest20978-21kworker/u16:2+efi_rts_wq19:55:151
3788992630,262cyclictest20141-21kworker/u16:1+efi_rts_wq23:55:160
3791992610,260cyclictest20978-21kworker/u16:2+efi_rts_wq19:50:123
3789992610,260cyclictest3838-21kworker/u16:1+efi_rts_wq19:10:151
3789992600,259cyclictest3838-21kworker/u16:1+efi_rts_wq22:45:131
3788992600,259cyclictest3838-21kworker/u16:1+efi_rts_wq20:25:160
3790992580,257cyclictest384-21kworker/u16:3+efi_rts_wq23:20:122
3788992580,257cyclictest20978-21kworker/u16:2+efi_rts_wq21:30:110
3790992570,255cyclictest3838-21kworker/u16:1+efi_rts_wq22:20:142
3788992570,256cyclictest30335-21kworker/u16:0+efi_rts_wq00:35:140
3791992560,255cyclictest30335-21kworker/u16:0+efi_rts_wq00:05:123
3791992560,253cyclictest20141-21kworker/u16:1+efi_rts_wq23:35:123
3791992550,254cyclictest3838-21kworker/u16:1+efi_rts_wq22:00:133
3791992550,254cyclictest20978-21kworker/u16:2+efi_rts_wq21:45:143
3789992550,253cyclictest3838-21kworker/u16:1+efi_rts_wq22:30:131
3788992550,254cyclictest30335-21kworker/u16:0+efi_rts_wq22:55:220
3791992540,253cyclictest3838-21kworker/u16:1+efi_rts_wq19:40:153
3791992540,253cyclictest20978-21kworker/u16:2+efi_rts_wq20:00:143
3790992540,253cyclictest30335-21kworker/u16:0+efi_rts_wq00:15:132
3789992540,253cyclictest3838-21kworker/u16:1+efi_rts_wq20:55:141
3788992540,251cyclictest20978-21kworker/u16:2+efi_rts_wq20:35:140
3790992530,252cyclictest3838-21kworker/u16:1+efi_rts_wq19:25:152
3791992520,251cyclictest3838-21kworker/u16:1+efi_rts_wq19:29:403
3789992520,251cyclictest3838-21kworker/u16:1+efi_rts_wq22:55:131
3791992510,250cyclictest20978-21kworker/u16:2+efi_rts_wq21:15:143
3790992510,250cyclictest1415-21kworker/u16:3+efi_rts_wq00:20:152
3790992490,248cyclictest20978-21kworker/u16:2+efi_rts_wq19:19:392
3788992490,247cyclictest1415-21kworker/u16:3+efi_rts_wq00:30:140
3791992470,246cyclictest3838-21kworker/u16:1+efi_rts_wq22:25:153
3789992470,246cyclictest3838-21kworker/u16:1+efi_rts_wq20:54:571
3791992460,245cyclictest20978-21kworker/u16:2+efi_rts_wq19:20:123
3791992440,243cyclictest30335-21kworker/u16:0+efi_rts_wq00:35:143
3790992440,243cyclictest20978-21kworker/u16:2+efi_rts_wq20:09:482
3789992440,242cyclictest3838-21kworker/u16:1+efi_rts_wq21:20:141
3789992440,242cyclictest3838-21kworker/u16:1+efi_rts_wq21:20:141
3788992440,242cyclictest20978-21kworker/u16:2+efi_rts_wq22:05:110
3789992410,240cyclictest384-21kworker/u16:3+efi_rts_wq23:25:151
3790992390,238cyclictest20978-21kworker/u16:2+efi_rts_wq21:15:142
3788992390,238cyclictest3838-21kworker/u16:1+efi_rts_wq20:50:140
3791992380,237cyclictest30335-21kworker/u16:0+efi_rts_wq00:15:133
3788992380,237cyclictest3838-21kworker/u16:1+efi_rts_wq20:45:140
3788992380,237cyclictest30335-21kworker/u16:0+efi_rts_wq00:00:330
3790992370,236cyclictest30335-21kworker/u16:0+efi_rts_wq23:15:142
3789992370,236cyclictest3838-21kworker/u16:1+efi_rts_wq21:50:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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