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2026-04-26 - 10:03

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 Apr 26, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9052334312,5sleep00-21swapper/019:09:420
5652322311,9sleep20-21swapper/219:06:002
5712319313,4sleep30-21swapper/319:06:053
5132316308,5sleep10-21swapper/119:05:231
1192993130,312cyclictest6675-21kworker/u16:3+efi_rts_wq21:40:120
1193993100,309cyclictest6675-21kworker/u16:3+efi_rts_wq21:25:131
1195993090,308cyclictest9594-21kworker/u16:2+efi_rts_wq00:00:133
1194993090,308cyclictest32057-21kworker/u16:1+efi_rts_wq23:15:132
1193993070,305cyclictest32057-21kworker/u16:1+efi_rts_wq23:05:141
1192993060,305cyclictest6675-21kworker/u16:3+efi_rts_wq19:45:130
1193993050,304cyclictest31880-21kworker/u16:3+efi_rts_wq23:45:131
1192993040,303cyclictest11780-21kworker/u16:2+efi_rts_wq19:40:130
1195993020,301cyclictest6675-21kworker/u16:3+efi_rts_wq20:05:143
1195993020,301cyclictest11780-21kworker/u16:2+efi_rts_wq22:40:143
1195993020,301cyclictest11780-21kworker/u16:2+efi_rts_wq20:54:563
1195993020,301cyclictest11780-21kworker/u16:2+efi_rts_wq20:45:143
1194993020,301cyclictest11780-21kworker/u16:2+efi_rts_wq21:20:132
1193993020,301cyclictest10604-21kworker/u16:2+efi_rts_wq23:30:141
1195993000,299cyclictest11780-21kworker/u16:2+efi_rts_wq19:29:413
1193992990,298cyclictest11780-21kworker/u16:2+efi_rts_wq22:30:141
1195992980,297cyclictest9594-21kworker/u16:2+efi_rts_wq00:35:393
1192992980,297cyclictest11780-21kworker/u16:2+efi_rts_wq19:50:130
1194992970,296cyclictest6675-21kworker/u16:3+efi_rts_wq19:45:142
1194992960,293cyclictest32057-21kworker/u16:1+efi_rts_wq22:35:132
1192992960,295cyclictest6675-21kworker/u16:3+efi_rts_wq20:15:130
1194992950,294cyclictest7079-21kworker/u16:0+efi_rts_wq00:05:132
1193992950,294cyclictest11780-21kworker/u16:2+efi_rts_wq21:00:141
1195992940,293cyclictest32057-21kworker/u16:1+efi_rts_wq23:15:133
1195992940,293cyclictest32057-21kworker/u16:1+efi_rts_wq22:50:203
1192992940,292cyclictest6675-21kworker/u16:3+efi_rts_wq21:55:120
1195992930,292cyclictest11780-21kworker/u16:2+efi_rts_wq22:25:133
1195992930,292cyclictest11780-21kworker/u16:2+efi_rts_wq19:39:423
1194992930,292cyclictest10604-21kworker/u16:2+efi_rts_wq23:10:242
1193992920,291cyclictest6675-21kworker/u16:3+efi_rts_wq21:50:081
1195992890,288cyclictest11780-21kworker/u16:2+efi_rts_wq20:20:133
1195992880,287cyclictest11780-21kworker/u16:2+efi_rts_wq21:20:123
1192992880,287cyclictest7079-21kworker/u16:0+efi_rts_wq23:55:320
1194992870,286cyclictest11780-21kworker/u16:2+efi_rts_wq22:40:182
1193992870,284cyclictest31880-21kworker/u16:3+efi_rts_wq23:40:131
1195992840,283cyclictest11780-21kworker/u16:2+efi_rts_wq21:50:143
1194992840,283cyclictest6675-21kworker/u16:3+efi_rts_wq22:10:122
1193992840,283cyclictest11780-21kworker/u16:2+efi_rts_wq20:45:141
1194992830,282cyclictest11780-21kworker/u16:2+efi_rts_wq19:15:012
1194992800,279cyclictest6675-21kworker/u16:3+efi_rts_wq20:50:132
1193992800,279cyclictest6675-21kworker/u16:3+efi_rts_wq21:05:131
1192992790,278cyclictest11780-21kworker/u16:2+efi_rts_wq21:25:030
1195992780,277cyclictest11780-21kworker/u16:2+efi_rts_wq19:10:133
1194992780,277cyclictest6675-21kworker/u16:3+efi_rts_wq22:15:142
1192992780,277cyclictest31880-21kworker/u16:3+efi_rts_wq23:50:120
1193992770,276cyclictest6675-21kworker/u16:3+efi_rts_wq20:59:581
1193992770,276cyclictest32057-21kworker/u16:1+efi_rts_wq22:55:131
1194992760,275cyclictest9594-21kworker/u16:2+efi_rts_wq00:35:142
1192992760,275cyclictest7079-21kworker/u16:0+efi_rts_wq00:20:360
1192992760,274cyclictest31880-21kworker/u16:3+efi_rts_wq23:45:140
1195992740,273cyclictest6675-21kworker/u16:3+efi_rts_wq21:15:133
1195992730,272cyclictest32057-21kworker/u16:1+efi_rts_wq22:45:193
1193992730,272cyclictest6675-21kworker/u16:3+efi_rts_wq19:35:141
1193992730,272cyclictest11780-21kworker/u16:2+efi_rts_wq21:10:141
1192992730,272cyclictest6675-21kworker/u16:3+efi_rts_wq20:25:120
1195992710,270cyclictest11780-21kworker/u16:2+efi_rts_wq21:55:093
1194992710,270cyclictest6675-21kworker/u16:3+efi_rts_wq21:15:142
1194992710,270cyclictest10604-21kworker/u16:2+efi_rts_wq23:35:282
1194992700,269cyclictest11780-21kworker/u16:2+efi_rts_wq21:10:142
1192992690,268cyclictest7079-21kworker/u16:0+efi_rts_wq00:10:120
1192992690,268cyclictest11780-21kworker/u16:2+efi_rts_wq19:25:140
1195992680,267cyclictest11780-21kworker/u16:2+efi_rts_wq20:39:543
1193992680,267cyclictest6675-21kworker/u16:3+efi_rts_wq22:05:141
1193992680,267cyclictest6675-21kworker/u16:3+efi_rts_wq22:05:141
1192992680,266cyclictest6675-21kworker/u16:3+efi_rts_wq23:00:140
1194992670,266cyclictest32057-21kworker/u16:1+efi_rts_wq22:55:132
1194992670,266cyclictest11780-21kworker/u16:2+efi_rts_wq20:10:132
1192992670,266cyclictest6675-21kworker/u16:3+efi_rts_wq19:55:120
1193992660,265cyclictest7079-21kworker/u16:0+efi_rts_wq00:30:141
1194992650,264cyclictest6675-21kworker/u16:3+efi_rts_wq20:55:132
1195992640,263cyclictest11780-21kworker/u16:2+efi_rts_wq21:30:133
1193992640,263cyclictest7079-21kworker/u16:0+efi_rts_wq00:20:141
1193992640,263cyclictest11780-21kworker/u16:2+efi_rts_wq19:25:141
1195992610,260cyclictest11780-21kworker/u16:2+efi_rts_wq20:00:143
1193992600,259cyclictest11780-21kworker/u16:2+efi_rts_wq20:30:131
1195992540,253cyclictest7079-21kworker/u16:0+efi_rts_wq00:05:343
1195992530,252cyclictest11780-21kworker/u16:2+efi_rts_wq22:00:143
1194992510,250cyclictest6675-21kworker/u16:3+efi_rts_wq20:29:522
1193992510,250cyclictest6675-21kworker/u16:3+efi_rts_wq21:35:051
1192992500,249cyclictest6675-21kworker/u16:3+efi_rts_wq20:34:530
1193992480,247cyclictest6675-21kworker/u16:3+efi_rts_wq19:30:141
1193992480,247cyclictest32057-21kworker/u16:1+efi_rts_wq23:20:131
1195992460,244cyclictest10604-21kworker/u16:2+efi_rts_wq23:10:123
1193992440,243cyclictest9594-21kworker/u16:2+efi_rts_wq00:25:121
1192992420,241cyclictest6675-21kworker/u16:3+efi_rts_wq19:20:130
1195992390,238cyclictest6675-21kworker/u16:3+efi_rts_wq20:19:503
1193992380,237cyclictest11780-21kworker/u16:2+efi_rts_wq21:40:061
1193992380,237cyclictest11780-21kworker/u16:2+efi_rts_wq19:15:141
1192992370,236cyclictest6675-21kworker/u16:3+efi_rts_wq22:45:140
1195992350,234cyclictest6675-21kworker/u16:3+efi_rts_wq21:45:143
1195992350,234cyclictest6675-21kworker/u16:3+efi_rts_wq21:25:133
1193992340,233cyclictest6675-21kworker/u16:3+efi_rts_wq20:09:481
1192992330,232cyclictest11780-21kworker/u16:2+efi_rts_wq21:35:130
1195992320,231cyclictest10604-21kworker/u16:2+efi_rts_wq23:30:143
1195992310,230cyclictest32057-21kworker/u16:1+efi_rts_wq23:05:233
1192992290,226cyclictest6675-21kworker/u16:3+efi_rts_wq21:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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