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2025-10-22 - 08:42

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 Wed Oct 22, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
266972336310,23sleep00-21swapper/019:05:330
269292319305,5sleep20-21swapper/219:08:322
267052318311,4sleep30-21swapper/319:05:413
267552314306,5sleep10-21swapper/119:06:191
27311992980,297cyclictest8039-21kworker/u16:0+efi_rts_wq23:54:511
27312992940,293cyclictest5507-21kworker/u16:3+efi_rts_wq23:34:472
27313992930,292cyclictest24229-21kworker/u16:1+efi_rts_wq22:40:143
27313992930,292cyclictest15817-21kworker/u16:2+efi_rts_wq21:34:283
27311992930,292cyclictest15817-21kworker/u16:2+efi_rts_wq22:30:131
27311992920,291cyclictest24229-21kworker/u16:1+efi_rts_wq22:10:161
27310992920,291cyclictest24229-21kworker/u16:1+efi_rts_wq20:20:150
27313992910,290cyclictest15817-21kworker/u16:2+efi_rts_wq22:15:143
27313992900,289cyclictest8039-21kworker/u16:0+efi_rts_wq00:00:163
27313992890,288cyclictest15817-21kworker/u16:2+efi_rts_wq21:45:133
27311992890,288cyclictest8039-21kworker/u16:0+efi_rts_wq00:29:591
27311992890,288cyclictest24722-21kworker/u16:2+efi_rts_wq22:54:411
27313992870,286cyclictest15817-21kworker/u16:2+efi_rts_wq21:59:313
27313992870,286cyclictest15817-21kworker/u16:2+efi_rts_wq20:00:163
27310992870,286cyclictest15817-21kworker/u16:2+efi_rts_wq21:29:270
27310992870,286cyclictest15817-21kworker/u16:2+efi_rts_wq21:00:170
27310992850,284cyclictest14427-21kworker/u16:2+efi_rts_wq00:05:150
27313992840,283cyclictest15817-21kworker/u16:2+efi_rts_wq20:45:113
27313992830,282cyclictest24229-21kworker/u16:1+efi_rts_wq20:55:113
27312992830,282cyclictest24229-21kworker/u16:1+efi_rts_wq23:20:152
27311992830,282cyclictest15817-21kworker/u16:2+efi_rts_wq22:25:141
27311992830,282cyclictest14427-21kworker/u16:2+efi_rts_wq00:10:151
27310992830,282cyclictest24722-21kworker/u16:2+efi_rts_wq23:09:430
27310992830,282cyclictest15817-21kworker/u16:2+efi_rts_wq21:50:190
27313992780,277cyclictest15817-21kworker/u16:2+efi_rts_wq19:30:123
27312992770,276cyclictest10866-21kworker/u16:3+efi_rts_wq20:19:152
27311992770,276cyclictest24722-21kworker/u16:2+efi_rts_wq23:25:131
27312992760,275cyclictest24722-21kworker/u16:2+efi_rts_wq22:55:142
27310992750,274cyclictest14427-21kworker/u16:2+efi_rts_wq00:20:150
27313992740,272cyclictest15817-21kworker/u16:2+efi_rts_wq19:55:143
27313992720,271cyclictest24722-21kworker/u16:2+efi_rts_wq23:25:123
27311992720,270cyclictest8039-21kworker/u16:0+efi_rts_wq23:40:131
27310992720,271cyclictest24229-21kworker/u16:1+efi_rts_wq21:40:140
27313992710,269cyclictest15817-21kworker/u16:2+efi_rts_wq21:05:153
27311992710,270cyclictest14427-21kworker/u16:2+efi_rts_wq23:45:141
27311992710,268cyclictest15817-21kworker/u16:2+efi_rts_wq22:00:141
27310992710,270cyclictest15817-21kworker/u16:2+efi_rts_wq19:40:150
27313992670,266cyclictest24229-21kworker/u16:1+efi_rts_wq21:25:143
27310992670,266cyclictest15817-21kworker/u16:2+efi_rts_wq20:29:160
27312992660,265cyclictest10866-21kworker/u16:3+efi_rts_wq19:45:122
27311992650,264cyclictest15817-21kworker/u16:2+efi_rts_wq22:15:151
27313992630,262cyclictest24229-21kworker/u16:1+efi_rts_wq21:15:133
27311992630,262cyclictest24722-21kworker/u16:2+efi_rts_wq23:04:421
27312992620,261cyclictest24229-21kworker/u16:1+efi_rts_wq20:50:152
27313992610,260cyclictest15817-21kworker/u16:2+efi_rts_wq20:10:153
27312992610,260cyclictest24229-21kworker/u16:1+efi_rts_wq21:40:132
27312992610,260cyclictest15817-21kworker/u16:2+efi_rts_wq19:59:132
27311992600,259cyclictest15817-21kworker/u16:2+efi_rts_wq20:15:141
27313992570,256cyclictest15817-21kworker/u16:2+efi_rts_wq21:20:173
27312992560,255cyclictest24229-21kworker/u16:1+efi_rts_wq22:19:352
27311992560,253cyclictest14427-21kworker/u16:2+efi_rts_wq00:20:141
27312992550,254cyclictest15817-21kworker/u16:2+efi_rts_wq22:24:372
27311992540,253cyclictest10866-21kworker/u16:3+efi_rts_wq19:15:141
27311992510,250cyclictest15817-21kworker/u16:2+efi_rts_wq20:45:101
27312992500,249cyclictest10866-21kworker/u16:3+efi_rts_wq20:05:132
27311992500,249cyclictest8039-21kworker/u16:0+efi_rts_wq00:09:551
27312992490,247cyclictest24229-21kworker/u16:1+efi_rts_wq22:40:142
27311992490,248cyclictest15817-21kworker/u16:2+efi_rts_wq21:44:301
27313992480,247cyclictest24229-21kworker/u16:1+efi_rts_wq21:10:153
27312992460,245cyclictest15817-21kworker/u16:2+efi_rts_wq21:35:142
27311992460,245cyclictest24229-21kworker/u16:1+efi_rts_wq21:25:141
27310992460,245cyclictest15817-21kworker/u16:2+efi_rts_wq22:05:160
27311992450,244cyclictest24229-21kworker/u16:1+efi_rts_wq23:20:151
27310992450,244cyclictest14427-21kworker/u16:2+efi_rts_wq00:15:130
27311992430,242cyclictest15817-21kworker/u16:2+efi_rts_wq19:40:151
27312992420,241cyclictest14427-21kworker/u16:2+efi_rts_wq00:15:132
27311992420,239cyclictest24229-21kworker/u16:1+efi_rts_wq20:25:141
27313992410,240cyclictest8039-21kworker/u16:0+efi_rts_wq23:44:493
27310992410,240cyclictest14427-21kworker/u16:2+efi_rts_wq23:45:140
27313992370,236cyclictest10866-21kworker/u16:3+efi_rts_wq19:45:133
27313992350,233cyclictest15817-21kworker/u16:2+efi_rts_wq22:30:143
27312992320,231cyclictest24229-21kworker/u16:1+efi_rts_wq20:20:152
27312992310,230cyclictest10866-21kworker/u16:3+efi_rts_wq20:00:162
27311992310,230cyclictest24229-21kworker/u16:1+efi_rts_wq23:05:141
27311992310,230cyclictest10866-21kworker/u16:3+efi_rts_wq19:20:131
27310992310,230cyclictest15817-21kworker/u16:2+efi_rts_wq20:44:200
27311992290,228cyclictest15817-21kworker/u16:2+efi_rts_wq20:30:161
27312992260,225cyclictest8039-21kworker/u16:0+efi_rts_wq23:40:142
27312992260,225cyclictest24722-21kworker/u16:2+efi_rts_wq23:15:152
27310992260,225cyclictest10866-21kworker/u16:3+efi_rts_wq19:35:150
27313992250,224cyclictest24229-21kworker/u16:1+efi_rts_wq22:35:123
27311992240,223cyclictest14427-21kworker/u16:2+efi_rts_wq00:35:141
27313992230,222cyclictest8039-21kworker/u16:0+efi_rts_wq00:30:173
27313992230,222cyclictest10866-21kworker/u16:3+efi_rts_wq19:50:173
27312992220,221cyclictest15817-21kworker/u16:2+efi_rts_wq19:10:142
27311992190,218cyclictest15817-21kworker/u16:2+efi_rts_wq20:10:151
27311992190,218cyclictest15817-21kworker/u16:2+efi_rts_wq19:55:131
27313992180,217cyclictest8039-21kworker/u16:0+efi_rts_wq23:55:143
27310992170,216cyclictest24722-21kworker/u16:2+efi_rts_wq23:00:130
27310992170,216cyclictest10866-21kworker/u16:3+efi_rts_wq19:15:000
27312992160,215cyclictest10866-21kworker/u16:3+efi_rts_wq20:14:152
27310992160,215cyclictest24722-21kworker/u16:2+efi_rts_wq23:10:150
27310992160,215cyclictest14427-21kworker/u16:2+efi_rts_wq23:50:130
27311992130,212cyclictest8039-21kworker/u16:0+efi_rts_wq23:35:141
27311992130,212cyclictest15817-21kworker/u16:2+efi_rts_wq21:24:261
27312992120,211cyclictest15817-21kworker/u16:2+efi_rts_wq22:25:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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