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2026-07-09 - 10:30

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 Jul 09, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261552320314,4sleep10-21swapper/119:06:521
262022317303,5sleep00-21swapper/019:07:270
262972316308,5sleep30-21swapper/319:08:423
261212314308,4sleep20-21swapper/219:06:252
26668992980,297cyclictest26314-21kworker/u16:1+efi_rts_wq19:43:583
26668992960,295cyclictest31395-21kworker/u16:0+efi_rts_wq00:16:123
26666992960,295cyclictest31395-21kworker/u16:0+efi_rts_wq22:15:101
26666992940,293cyclictest32271-21kworker/u16:2+efi_rts_wq21:50:131
26668992930,292cyclictest29287-21kworker/u16:1+efi_rts_wq23:46:063
26666992930,292cyclictest26314-21kworker/u16:1+efi_rts_wq20:40:111
26665992930,292cyclictest32271-21kworker/u16:2+efi_rts_wq21:10:120
26665992920,291cyclictest29287-21kworker/u16:1+efi_rts_wq00:15:090
26667992910,290cyclictest31395-21kworker/u16:0+efi_rts_wq22:34:312
26668992900,289cyclictest27819-21kworker/u16:3+efi_rts_wq21:04:153
26667992890,288cyclictest24027-21kworker/u16:0+efi_rts_wq20:19:052
26666992890,288cyclictest27819-21kworker/u16:3+efi_rts_wq21:00:121
26665992890,288cyclictest24027-21kworker/u16:0+efi_rts_wq19:15:120
26667992880,287cyclictest31395-21kworker/u16:0+efi_rts_wq23:05:122
26667992870,284cyclictest32271-21kworker/u16:2+efi_rts_wq21:50:132
26666992870,285cyclictest31395-21kworker/u16:0+efi_rts_wq22:25:111
26665992870,286cyclictest31395-21kworker/u16:0+efi_rts_wq00:05:110
26665992860,285cyclictest29287-21kworker/u16:1+efi_rts_wq23:15:140
26667992850,284cyclictest31395-21kworker/u16:0+efi_rts_wq23:35:122
26668992840,283cyclictest31395-21kworker/u16:0+efi_rts_wq23:19:403
26668992840,282cyclictest27819-21kworker/u16:3+efi_rts_wq21:35:113
26665992830,282cyclictest26314-21kworker/u16:1+efi_rts_wq20:20:120
26668992820,281cyclictest31395-21kworker/u16:0+efi_rts_wq00:20:123
26667992810,280cyclictest27819-21kworker/u16:3+efi_rts_wq21:25:112
26666992810,280cyclictest26314-21kworker/u16:1+efi_rts_wq20:15:111
26668992790,278cyclictest26314-21kworker/u16:1+efi_rts_wq20:14:063
26666992790,278cyclictest31395-21kworker/u16:0+efi_rts_wq22:30:131
26665992790,278cyclictest26314-21kworker/u16:1+efi_rts_wq19:40:130
26668992780,276cyclictest29287-21kworker/u16:1+efi_rts_wq23:00:133
26668992770,276cyclictest26314-21kworker/u16:1+efi_rts_wq20:49:103
26666992770,276cyclictest27819-21kworker/u16:3+efi_rts_wq21:34:201
26665992750,274cyclictest32271-21kworker/u16:2+efi_rts_wq21:30:120
26667992740,273cyclictest26314-21kworker/u16:1+efi_rts_wq19:40:122
26666992740,273cyclictest24027-21kworker/u16:0+efi_rts_wq19:59:021
26666992730,272cyclictest26314-21kworker/u16:1+efi_rts_wq20:20:131
26665992720,271cyclictest29287-21kworker/u16:1+efi_rts_wq00:01:090
26668992710,270cyclictest26314-21kworker/u16:1+efi_rts_wq19:10:123
26667992710,270cyclictest31395-21kworker/u16:0+efi_rts_wq22:35:112
26665992700,269cyclictest29287-21kworker/u16:1+efi_rts_wq23:20:110
26665992700,269cyclictest27819-21kworker/u16:3+efi_rts_wq21:20:120
26665992690,268cyclictest24027-21kworker/u16:0+efi_rts_wq19:45:100
26668992670,266cyclictest29287-21kworker/u16:1+efi_rts_wq22:00:133
26667992670,266cyclictest29287-21kworker/u16:1+efi_rts_wq23:34:422
26667992670,266cyclictest27819-21kworker/u16:3+efi_rts_wq20:35:112
26666992660,265cyclictest31395-21kworker/u16:0+efi_rts_wq22:20:121
26666992660,265cyclictest29287-21kworker/u16:1+efi_rts_wq00:11:101
26665992630,262cyclictest31395-21kworker/u16:0+efi_rts_wq23:51:070
26668992620,261cyclictest31395-21kworker/u16:0+efi_rts_wq22:55:123
26665992620,261cyclictest27819-21kworker/u16:3+efi_rts_wq20:54:110
26666992610,260cyclictest31395-21kworker/u16:0+efi_rts_wq23:40:131
26665992610,260cyclictest29287-21kworker/u16:1+efi_rts_wq00:30:130
26667992600,259cyclictest32271-21kworker/u16:2+efi_rts_wq20:59:142
26666992600,259cyclictest26314-21kworker/u16:1+efi_rts_wq19:18:551
26666992600,259cyclictest24027-21kworker/u16:0+efi_rts_wq19:50:121
26666992590,258cyclictest29287-21kworker/u16:1+efi_rts_wq22:45:111
26665992580,257cyclictest31395-21kworker/u16:0+efi_rts_wq22:30:120
26668992560,255cyclictest31395-21kworker/u16:0+efi_rts_wq22:25:113
26665992560,255cyclictest31395-21kworker/u16:0+efi_rts_wq22:15:120
26666992540,253cyclictest26314-21kworker/u16:1+efi_rts_wq19:25:121
26665992530,250cyclictest27819-21kworker/u16:3+efi_rts_wq20:55:120
26666992510,250cyclictest31395-21kworker/u16:0+efi_rts_wq22:35:111
26668992500,249cyclictest32271-21kworker/u16:2+efi_rts_wq21:20:133
26665992500,249cyclictest31395-21kworker/u16:0+efi_rts_wq23:45:120
26668992480,247cyclictest29287-21kworker/u16:1+efi_rts_wq00:00:113
26666992480,247cyclictest26314-21kworker/u16:1+efi_rts_wq20:30:141
26666992470,246cyclictest24027-21kworker/u16:0+efi_rts_wq19:30:131
26665992470,246cyclictest29287-21kworker/u16:1+efi_rts_wq22:00:140
26667992460,245cyclictest26314-21kworker/u16:1+efi_rts_wq19:25:122
26665992460,245cyclictest26314-21kworker/u16:1+efi_rts_wq20:30:130
26668992450,244cyclictest27819-21kworker/u16:3+efi_rts_wq21:14:183
26668992450,243cyclictest24027-21kworker/u16:0+efi_rts_wq19:50:113
26666992450,244cyclictest27819-21kworker/u16:3+efi_rts_wq21:25:121
26668992430,242cyclictest27819-21kworker/u16:3+efi_rts_wq21:40:133
26668992430,242cyclictest27819-21kworker/u16:3+efi_rts_wq21:40:123
26668992420,241cyclictest24027-21kworker/u16:0+efi_rts_wq20:25:123
26667992400,239cyclictest31395-21kworker/u16:0+efi_rts_wq00:31:142
26666992400,239cyclictest32271-21kworker/u16:2+efi_rts_wq21:49:221
26665992390,238cyclictest31395-21kworker/u16:0+efi_rts_wq00:10:120
26665992390,238cyclictest29287-21kworker/u16:1+efi_rts_wq23:55:110
26665992370,236cyclictest24027-21kworker/u16:0+efi_rts_wq19:55:110
26665992340,233cyclictest31395-21kworker/u16:0+efi_rts_wq22:50:130
26665992330,232cyclictest29287-21kworker/u16:1+efi_rts_wq22:45:120
26668992310,228cyclictest27819-21kworker/u16:3+efi_rts_wq20:55:113
26667992290,228cyclictest29287-21kworker/u16:1+efi_rts_wq23:25:112
26665992290,228cyclictest24027-21kworker/u16:0+efi_rts_wq20:25:120
26665992290,228cyclictest24027-21kworker/u16:0+efi_rts_wq20:00:150
26668992280,227cyclictest32271-21kworker/u16:2+efi_rts_wq21:45:133
26668992280,227cyclictest32271-21kworker/u16:2+efi_rts_wq20:50:133
26665992260,224cyclictest26314-21kworker/u16:1+efi_rts_wq19:35:090
26666992240,223cyclictest29287-21kworker/u16:1+efi_rts_wq21:59:241
26667992230,221cyclictest31395-21kworker/u16:0+efi_rts_wq22:05:112
26668992220,221cyclictest26314-21kworker/u16:1+efi_rts_wq20:44:113
26668992200,219cyclictest27819-21kworker/u16:3+efi_rts_wq21:29:193
26668992190,218cyclictest31395-21kworker/u16:0+efi_rts_wq23:10:123
26665992190,218cyclictest29287-21kworker/u16:1+efi_rts_wq23:44:450
26668992180,217cyclictest24027-21kworker/u16:0+efi_rts_wq20:09:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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