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2026-08-10 - 04:33

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 Mon Aug 10, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66112324317,4sleep00-21swapper/019:06:450
68392319311,5sleep30-21swapper/319:09:413
68642317310,5sleep20-21swapper/219:10:002
66902315307,5sleep10-21swapper/119:07:471
7130992980,297cyclictest30434-21kworker/u16:2+efi_rts_wq20:20:133
7127992970,296cyclictest24706-21kworker/u16:0+efi_rts_wq22:34:590
7128992960,295cyclictest23470-21kworker/u16:3+efi_rts_wq00:10:131
7130992950,294cyclictest3361-21kworker/u16:3+efi_rts_wq22:04:533
7130992940,293cyclictest2537-21kworker/u16:0+efi_rts_wq20:14:333
7128992940,293cyclictest9261-21kworker/u16:1+efi_rts_wq23:30:131
7128992940,293cyclictest30434-21kworker/u16:2+efi_rts_wq19:20:131
7127992940,293cyclictest9261-21kworker/u16:1+efi_rts_wq00:20:110
7128992930,292cyclictest2537-21kworker/u16:0+efi_rts_wq21:25:121
7129992910,290cyclictest9261-21kworker/u16:1+efi_rts_wq23:50:132
7128992900,289cyclictest30434-21kworker/u16:2+efi_rts_wq21:50:131
7130992890,288cyclictest30434-21kworker/u16:2+efi_rts_wq21:00:133
7128992890,288cyclictest2537-21kworker/u16:0+efi_rts_wq19:59:301
7127992890,288cyclictest30434-21kworker/u16:2+efi_rts_wq20:30:120
7128992880,287cyclictest30434-21kworker/u16:2+efi_rts_wq21:40:141
7127992870,286cyclictest9261-21kworker/u16:1+efi_rts_wq00:15:140
7130992860,284cyclictest9261-21kworker/u16:1+efi_rts_wq23:10:133
7128992860,284cyclictest6521-21kworker/u16:2+efi_rts_wq23:15:131
7130992840,283cyclictest2537-21kworker/u16:0+efi_rts_wq20:40:143
7129992840,283cyclictest30434-21kworker/u16:2+efi_rts_wq20:50:122
7130992820,281cyclictest30434-21kworker/u16:2+efi_rts_wq20:54:403
7130992820,281cyclictest18677-21kworker/u16:3+efi_rts_wq23:20:133
7128992820,281cyclictest2537-21kworker/u16:0+efi_rts_wq19:30:121
7127992820,281cyclictest30434-21kworker/u16:2+efi_rts_wq21:45:150
7128992800,277cyclictest9261-21kworker/u16:1+efi_rts_wq23:10:131
7130992790,278cyclictest30434-21kworker/u16:2+efi_rts_wq19:50:153
7130992790,278cyclictest30434-21kworker/u16:2+efi_rts_wq19:50:143
7130992780,277cyclictest30434-21kworker/u16:2+efi_rts_wq20:35:133
7129992780,277cyclictest23470-21kworker/u16:3+efi_rts_wq00:05:172
7127992780,277cyclictest3361-21kworker/u16:3+efi_rts_wq22:05:140
7130992770,276cyclictest30434-21kworker/u16:2+efi_rts_wq22:20:133
7127992770,276cyclictest2537-21kworker/u16:0+efi_rts_wq20:40:140
7130992760,275cyclictest30989-21kworker/u16:3+efi_rts_wq22:55:043
7127992760,275cyclictest30434-21kworker/u16:2+efi_rts_wq19:35:160
7127992760,275cyclictest2537-21kworker/u16:0+efi_rts_wq19:25:120
7128992750,274cyclictest2537-21kworker/u16:0+efi_rts_wq20:55:161
7130992740,272cyclictest9261-21kworker/u16:1+efi_rts_wq23:35:123
7130992740,272cyclictest30989-21kworker/u16:3+efi_rts_wq22:50:123
7128992740,273cyclictest30434-21kworker/u16:2+efi_rts_wq19:15:141
7127992730,271cyclictest27467-21kworker/u16:1+efi_rts_wq22:45:120
7128992710,270cyclictest2537-21kworker/u16:0+efi_rts_wq21:00:131
7129992690,268cyclictest9261-21kworker/u16:1+efi_rts_wq00:21:122
7128992670,266cyclictest2537-21kworker/u16:0+efi_rts_wq21:30:161
7130992660,265cyclictest23470-21kworker/u16:3+efi_rts_wq00:06:083
7129992660,265cyclictest24706-21kworker/u16:0+efi_rts_wq22:35:132
7130992640,263cyclictest3361-21kworker/u16:3+efi_rts_wq21:59:523
7129992630,262cyclictest30434-21kworker/u16:2+efi_rts_wq22:15:112
7130992620,261cyclictest30434-21kworker/u16:2+efi_rts_wq21:05:123
7127992620,261cyclictest3361-21kworker/u16:3+efi_rts_wq22:10:120
7130992610,260cyclictest2537-21kworker/u16:0+efi_rts_wq21:39:493
7128992600,259cyclictest30434-21kworker/u16:2+efi_rts_wq21:09:441
7127992590,257cyclictest9261-21kworker/u16:1+efi_rts_wq23:30:140
7130992580,257cyclictest27467-21kworker/u16:1+efi_rts_wq22:40:003
7130992580,255cyclictest2537-21kworker/u16:0+efi_rts_wq19:55:153
7127992570,256cyclictest2537-21kworker/u16:0+efi_rts_wq21:20:130
7129992560,255cyclictest2537-21kworker/u16:0+efi_rts_wq20:00:212
7128992550,254cyclictest30434-21kworker/u16:2+efi_rts_wq20:49:391
7130992520,251cyclictest2537-21kworker/u16:0+efi_rts_wq20:25:133
7128992520,251cyclictest30434-21kworker/u16:2+efi_rts_wq20:05:131
7127992520,251cyclictest30434-21kworker/u16:2+efi_rts_wq21:10:160
7128992500,249cyclictest2537-21kworker/u16:0+efi_rts_wq20:15:121
7130992480,247cyclictest2537-21kworker/u16:0+efi_rts_wq19:19:233
7130992460,245cyclictest30434-21kworker/u16:2+efi_rts_wq20:45:133
7127992460,244cyclictest23470-21kworker/u16:3+efi_rts_wq00:00:150
7130992450,244cyclictest30434-21kworker/u16:2+efi_rts_wq21:20:143
7129992450,244cyclictest30434-21kworker/u16:2+efi_rts_wq19:10:132
7128992450,244cyclictest9261-21kworker/u16:1+efi_rts_wq23:40:131
7129992420,241cyclictest18677-21kworker/u16:3+efi_rts_wq23:20:132
7129992400,239cyclictest2537-21kworker/u16:0+efi_rts_wq20:05:142
7128992400,239cyclictest30434-21kworker/u16:2+efi_rts_wq19:40:141
7129992390,238cyclictest2537-21kworker/u16:0+efi_rts_wq21:25:122
7130992380,237cyclictest30434-21kworker/u16:2+efi_rts_wq19:29:253
7128992380,237cyclictest9261-21kworker/u16:1+efi_rts_wq00:15:131
7127992380,237cyclictest2537-21kworker/u16:0+efi_rts_wq21:35:110
7127992370,236cyclictest30434-21kworker/u16:2+efi_rts_wq19:45:130
7130992360,235cyclictest23470-21kworker/u16:3+efi_rts_wq00:11:093
7128992350,234cyclictest30989-21kworker/u16:3+efi_rts_wq22:50:121
7127992350,234cyclictest23470-21kworker/u16:3+efi_rts_wq00:05:180
7127992340,233cyclictest30434-21kworker/u16:2+efi_rts_wq19:10:120
7127992330,232cyclictest6521-21kworker/u16:2+efi_rts_wq23:15:130
7129992320,231cyclictest3361-21kworker/u16:3+efi_rts_wq22:30:112
7128992290,228cyclictest30434-21kworker/u16:2+efi_rts_wq22:29:591
7127992290,228cyclictest27467-21kworker/u16:1+efi_rts_wq22:40:120
7127992270,226cyclictest30434-21kworker/u16:2+efi_rts_wq22:20:130
7127992270,226cyclictest23470-21kworker/u16:3+efi_rts_wq00:30:130
7130992260,225cyclictest2537-21kworker/u16:0+efi_rts_wq20:55:163
7127992260,225cyclictest2537-21kworker/u16:0+efi_rts_wq20:19:340
7128992250,224cyclictest23470-21kworker/u16:3+efi_rts_wq23:56:061
7130992240,223cyclictest9261-21kworker/u16:1+efi_rts_wq00:25:153
7128992240,223cyclictest30434-21kworker/u16:2+efi_rts_wq21:20:131
7127992230,222cyclictest18677-21kworker/u16:3+efi_rts_wq23:20:140
7130992220,221cyclictest30434-21kworker/u16:2+efi_rts_wq22:25:133
7130992210,220cyclictest9261-21kworker/u16:1+efi_rts_wq00:20:113
7127992210,220cyclictest9261-21kworker/u16:1+efi_rts_wq00:26:110
7127992200,219cyclictest30989-21kworker/u16:3+efi_rts_wq22:50:020
7129992190,218cyclictest24706-21kworker/u16:0+efi_rts_wq22:45:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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