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2026-07-03 - 07:52

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 Fri Jul 03, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
181292318311,4sleep20-21swapper/219:05:092
197402317310,4sleep30-21swapper/319:07:073
198522316308,5sleep10-21swapper/119:08:321
197372315308,4sleep00-21swapper/019:07:030
20231993050,302cyclictest6768-21kworker/u16:2+efi_rts_wq21:25:132
20231993050,302cyclictest6768-21kworker/u16:2+efi_rts_wq20:00:132
20230993010,300cyclictest8253-21kworker/u16:1+efi_rts_wq23:35:121
20232992980,297cyclictest2210-21kworker/u16:3+efi_rts_wq20:30:403
20231992980,297cyclictest6768-21kworker/u16:2+efi_rts_wq21:15:142
20232992970,296cyclictest6768-21kworker/u16:2+efi_rts_wq20:50:433
20231992950,294cyclictest2210-21kworker/u16:3+efi_rts_wq19:30:122
20230992950,294cyclictest2210-21kworker/u16:3+efi_rts_wq19:25:121
20232992920,291cyclictest2210-21kworker/u16:3+efi_rts_wq19:45:123
20231992920,291cyclictest2210-21kworker/u16:3+efi_rts_wq20:55:122
20232992910,290cyclictest2210-21kworker/u16:3+efi_rts_wq22:25:123
20231992910,290cyclictest6768-21kworker/u16:2+efi_rts_wq21:40:582
20231992910,290cyclictest2210-21kworker/u16:3+efi_rts_wq21:35:142
20232992890,288cyclictest6768-21kworker/u16:2+efi_rts_wq20:45:123
20232992890,288cyclictest2210-21kworker/u16:3+efi_rts_wq20:55:123
20229992880,287cyclictest6768-21kworker/u16:2+efi_rts_wq19:30:290
20231992870,286cyclictest6768-21kworker/u16:2+efi_rts_wq19:50:142
20231992870,286cyclictest2210-21kworker/u16:3+efi_rts_wq22:10:112
20229992870,286cyclictest2210-21kworker/u16:3+efi_rts_wq19:15:120
20230992860,285cyclictest8253-21kworker/u16:1+efi_rts_wq23:06:151
20229992860,285cyclictest25184-21kworker/u16:3+efi_rts_wq23:26:180
20232992850,284cyclictest11505-21kworker/u16:0+efi_rts_wq00:20:123
20229992850,284cyclictest8253-21kworker/u16:1+efi_rts_wq22:40:120
20229992850,284cyclictest8253-21kworker/u16:1+efi_rts_wq22:40:110
20231992830,282cyclictest9003-21kworker/u16:2+efi_rts_wq23:50:142
20231992830,282cyclictest2210-21kworker/u16:3+efi_rts_wq19:10:132
20232992820,281cyclictest2210-21kworker/u16:3+efi_rts_wq22:15:123
20231992820,279cyclictest2210-21kworker/u16:3+efi_rts_wq22:20:132
20231992800,279cyclictest9003-21kworker/u16:2+efi_rts_wq23:45:142
20230992800,279cyclictest14567-21kworker/u16:2+efi_rts_wq23:00:181
20232992780,277cyclictest9003-21kworker/u16:2+efi_rts_wq00:15:133
20232992780,277cyclictest6768-21kworker/u16:2+efi_rts_wq20:20:143
20230992760,275cyclictest8253-21kworker/u16:1+efi_rts_wq23:15:131
20229992760,275cyclictest25184-21kworker/u16:3+efi_rts_wq23:20:130
20229992740,273cyclictest2210-21kworker/u16:3+efi_rts_wq21:30:140
20231992730,272cyclictest2210-21kworker/u16:3+efi_rts_wq21:05:142
20230992720,271cyclictest6768-21kworker/u16:2+efi_rts_wq22:30:131
20229992720,271cyclictest9003-21kworker/u16:2+efi_rts_wq23:51:230
20232992710,270cyclictest2210-21kworker/u16:3+efi_rts_wq21:20:133
20229992710,270cyclictest25184-21kworker/u16:3+efi_rts_wq23:10:110
20230992700,269cyclictest9003-21kworker/u16:2+efi_rts_wq00:25:171
20232992690,268cyclictest6768-21kworker/u16:2+efi_rts_wq21:15:143
20232992690,268cyclictest2210-21kworker/u16:3+efi_rts_wq19:50:143
20229992690,268cyclictest8253-21kworker/u16:1+efi_rts_wq23:16:170
20231992650,264cyclictest6768-21kworker/u16:2+efi_rts_wq21:00:122
20232992640,263cyclictest2210-21kworker/u16:3+efi_rts_wq20:00:353
20231992640,263cyclictest25184-21kworker/u16:3+efi_rts_wq23:30:132
20229992640,263cyclictest9003-21kworker/u16:2+efi_rts_wq00:05:140
20229992640,263cyclictest2210-21kworker/u16:3+efi_rts_wq21:40:130
20232992630,262cyclictest2210-21kworker/u16:3+efi_rts_wq20:35:123
20230992630,262cyclictest2210-21kworker/u16:3+efi_rts_wq19:40:131
20231992620,260cyclictest9003-21kworker/u16:2+efi_rts_wq00:00:122
20232992600,259cyclictest6768-21kworker/u16:2+efi_rts_wq20:25:383
20229992600,259cyclictest6768-21kworker/u16:2+efi_rts_wq19:20:140
20229992600,259cyclictest2210-21kworker/u16:3+efi_rts_wq21:35:130
20229992600,259cyclictest14567-21kworker/u16:2+efi_rts_wq23:00:180
20232992580,257cyclictest6768-21kworker/u16:2+efi_rts_wq19:35:123
20232992580,257cyclictest11505-21kworker/u16:0+efi_rts_wq00:35:133
20230992580,257cyclictest2210-21kworker/u16:3+efi_rts_wq20:10:371
20232992570,256cyclictest6768-21kworker/u16:2+efi_rts_wq19:40:313
20232992570,255cyclictest11505-21kworker/u16:0+efi_rts_wq23:55:133
20229992570,256cyclictest2210-21kworker/u16:3+efi_rts_wq20:15:120
20232992560,255cyclictest6768-21kworker/u16:2+efi_rts_wq19:25:293
20230992530,252cyclictest2210-21kworker/u16:3+efi_rts_wq21:20:141
20229992530,249cyclictest2210-21kworker/u16:3+efi_rts_wq19:40:120
20231992510,250cyclictest6768-21kworker/u16:2+efi_rts_wq22:00:132
20229992510,250cyclictest6768-21kworker/u16:2+efi_rts_wq20:40:110
20229992490,248cyclictest6768-21kworker/u16:2+efi_rts_wq21:45:120
20230992480,247cyclictest6768-21kworker/u16:2+efi_rts_wq20:25:111
20229992470,245cyclictest5930-21kworker/u16:0+efi_rts_wq22:45:130
20230992460,245cyclictest9003-21kworker/u16:2+efi_rts_wq00:00:121
20232992450,244cyclictest6768-21kworker/u16:2+efi_rts_wq19:15:013
20229992430,242cyclictest6768-21kworker/u16:2+efi_rts_wq19:35:290
20230992420,241cyclictest6768-21kworker/u16:2+efi_rts_wq19:55:331
20229992420,241cyclictest11505-21kworker/u16:0+efi_rts_wq23:55:140
20232992410,240cyclictest9003-21kworker/u16:2+efi_rts_wq00:01:253
20232992410,240cyclictest6768-21kworker/u16:2+efi_rts_wq22:00:123
20229992410,240cyclictest11505-21kworker/u16:0+efi_rts_wq00:21:280
20231992390,238cyclictest6768-21kworker/u16:2+efi_rts_wq20:05:352
20229992390,238cyclictest6768-21kworker/u16:2+efi_rts_wq22:05:110
20230992380,237cyclictest25184-21kworker/u16:3+efi_rts_wq23:10:121
20230992380,235cyclictest6768-21kworker/u16:2+efi_rts_wq21:50:131
20229992380,237cyclictest8253-21kworker/u16:1+efi_rts_wq23:41:220
20229992380,237cyclictest6768-21kworker/u16:2+efi_rts_wq21:55:120
20229992380,237cyclictest11505-21kworker/u16:0+efi_rts_wq00:30:130
20231992360,234cyclictest8253-21kworker/u16:1+efi_rts_wq23:05:112
20232992350,234cyclictest9003-21kworker/u16:2+efi_rts_wq23:50:143
20229992350,234cyclictest6768-21kworker/u16:2+efi_rts_wq21:00:120
20232992340,233cyclictest11505-21kworker/u16:0+efi_rts_wq23:46:233
20231992320,231cyclictest8253-21kworker/u16:1+efi_rts_wq23:40:132
20230992320,231cyclictest2210-21kworker/u16:3+efi_rts_wq20:05:121
20232992310,230cyclictest9003-21kworker/u16:2+efi_rts_wq00:31:303
20232992280,227cyclictest14567-21kworker/u16:2+efi_rts_wq23:00:173
20230992250,224cyclictest2210-21kworker/u16:3+efi_rts_wq22:25:121
20230992250,224cyclictest2210-21kworker/u16:3+efi_rts_wq21:10:101
20229992250,224cyclictest2210-21kworker/u16:3+efi_rts_wq21:10:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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