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2025-12-23 - 04:19

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 Tue Dec 23, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59122326304,19sleep00-21swapper/019:06:090
58652320313,5sleep30-21swapper/319:05:333
60252319312,4sleep20-21swapper/219:07:362
59032314308,4sleep10-21swapper/119:06:031
6480993120,311cyclictest11229-21kworker/u16:1+efi_rts_wq21:00:133
6479993090,308cyclictest11229-21kworker/u16:1+efi_rts_wq19:39:572
6477993080,307cyclictest20461-21kworker/u16:2+efi_rts_wq19:35:140
6479993070,306cyclictest15231-21kworker/u16:2+efi_rts_wq00:20:142
6479993070,306cyclictest11229-21kworker/u16:1+efi_rts_wq22:05:132
6477993070,306cyclictest20461-21kworker/u16:2+efi_rts_wq20:45:120
6477993070,306cyclictest11229-21kworker/u16:1+efi_rts_wq22:00:220
6479993060,305cyclictest11229-21kworker/u16:1+efi_rts_wq22:20:162
6480993040,303cyclictest20461-21kworker/u16:2+efi_rts_wq19:40:113
6478993040,303cyclictest20461-21kworker/u16:2+efi_rts_wq20:35:131
6480993030,301cyclictest15231-21kworker/u16:2+efi_rts_wq00:00:153
6479993030,302cyclictest20461-21kworker/u16:2+efi_rts_wq22:45:292
6479993030,302cyclictest11229-21kworker/u16:1+efi_rts_wq22:30:132
6478993030,302cyclictest11229-21kworker/u16:1+efi_rts_wq19:24:531
6477993020,298cyclictest20461-21kworker/u16:2+efi_rts_wq21:15:130
6478992990,298cyclictest8026-21kworker/u16:0+efi_rts_wq22:15:121
6478992990,298cyclictest20461-21kworker/u16:2+efi_rts_wq21:30:131
6478992990,298cyclictest11229-21kworker/u16:1+efi_rts_wq22:25:151
6478992990,298cyclictest11229-21kworker/u16:1+efi_rts_wq22:25:141
6480992980,297cyclictest11229-21kworker/u16:1+efi_rts_wq22:10:123
6479992980,297cyclictest20461-21kworker/u16:2+efi_rts_wq19:15:012
6478992970,296cyclictest20461-21kworker/u16:2+efi_rts_wq19:25:121
6478992970,296cyclictest11229-21kworker/u16:1+efi_rts_wq21:45:131
6478992960,295cyclictest422-21kworker/u16:3+efi_rts_wq00:25:141
6477992960,295cyclictest20461-21kworker/u16:2+efi_rts_wq22:40:130
6477992960,295cyclictest20461-21kworker/u16:2+efi_rts_wq20:50:090
6480992950,294cyclictest20461-21kworker/u16:2+efi_rts_wq19:55:163
6480992950,294cyclictest11229-21kworker/u16:1+efi_rts_wq19:50:133
6478992940,293cyclictest32355-21kworker/u16:3+efi_rts_wq22:50:131
6478992940,293cyclictest20461-21kworker/u16:2+efi_rts_wq20:30:121
6477992930,292cyclictest20461-21kworker/u16:2+efi_rts_wq20:10:000
6480992910,290cyclictest2441-21kworker/u16:0+efi_rts_wq23:25:363
6479992910,290cyclictest2441-21kworker/u16:0+efi_rts_wq23:45:132
6478992890,288cyclictest422-21kworker/u16:3+efi_rts_wq23:55:151
6479992880,287cyclictest20461-21kworker/u16:2+efi_rts_wq21:05:132
6478992870,286cyclictest15231-21kworker/u16:2+efi_rts_wq23:30:131
6477992870,286cyclictest15231-21kworker/u16:2+efi_rts_wq23:25:120
6480992850,284cyclictest15231-21kworker/u16:2+efi_rts_wq00:30:123
6480992830,282cyclictest15231-21kworker/u16:2+efi_rts_wq00:10:133
6480992830,282cyclictest11229-21kworker/u16:1+efi_rts_wq19:30:133
6480992820,281cyclictest20461-21kworker/u16:2+efi_rts_wq20:55:153
6479992820,278cyclictest2441-21kworker/u16:0+efi_rts_wq23:40:142
6477992820,280cyclictest4995-21kworker/u16:2+efi_rts_wq23:00:130
6478992790,278cyclictest15231-21kworker/u16:2+efi_rts_wq00:10:451
6479992760,275cyclictest15231-21kworker/u16:2+efi_rts_wq23:20:142
6478992760,275cyclictest20461-21kworker/u16:2+efi_rts_wq21:50:161
6478992760,275cyclictest20461-21kworker/u16:2+efi_rts_wq20:05:151
6478992750,274cyclictest15231-21kworker/u16:2+efi_rts_wq23:50:131
6478992740,273cyclictest11229-21kworker/u16:1+efi_rts_wq20:40:131
6477992730,272cyclictest20461-21kworker/u16:2+efi_rts_wq21:40:110
6479992720,271cyclictest20461-21kworker/u16:2+efi_rts_wq19:10:132
6478992710,270cyclictest4995-21kworker/u16:2+efi_rts_wq23:00:311
6480992700,269cyclictest15231-21kworker/u16:2+efi_rts_wq23:50:143
6480992690,268cyclictest422-21kworker/u16:3+efi_rts_wq00:05:143
6477992690,268cyclictest2441-21kworker/u16:0+efi_rts_wq23:35:120
6477992690,268cyclictest20461-21kworker/u16:2+efi_rts_wq21:50:160
6477992670,266cyclictest15231-21kworker/u16:2+efi_rts_wq23:30:140
6477992670,266cyclictest11229-21kworker/u16:1+efi_rts_wq21:35:120
6477992650,264cyclictest20461-21kworker/u16:2+efi_rts_wq20:30:130
6477992640,263cyclictest20461-21kworker/u16:2+efi_rts_wq22:35:120
6478992630,262cyclictest2441-21kworker/u16:0+efi_rts_wq22:55:151
6477992630,262cyclictest11229-21kworker/u16:1+efi_rts_wq19:45:110
6480992620,261cyclictest11229-21kworker/u16:1+efi_rts_wq20:40:133
6480992590,258cyclictest11229-21kworker/u16:1+efi_rts_wq22:00:143
6478992590,258cyclictest11229-21kworker/u16:1+efi_rts_wq21:10:131
6477992590,258cyclictest7633-21kworker/u16:3+efi_rts_wq23:10:140
6480992580,257cyclictest422-21kworker/u16:3+efi_rts_wq00:15:153
6479992580,257cyclictest422-21kworker/u16:3+efi_rts_wq00:15:472
6478992580,257cyclictest20461-21kworker/u16:2+efi_rts_wq19:15:131
6477992570,256cyclictest11229-21kworker/u16:1+efi_rts_wq20:10:150
6480992550,254cyclictest20461-21kworker/u16:2+efi_rts_wq21:40:163
6478992550,254cyclictest11229-21kworker/u16:1+efi_rts_wq22:05:131
6479992540,253cyclictest20461-21kworker/u16:2+efi_rts_wq20:40:062
6479992540,252cyclictest11229-21kworker/u16:1+efi_rts_wq19:50:132
6477992520,251cyclictest11229-21kworker/u16:1+efi_rts_wq22:10:130
6477992510,250cyclictest7633-21kworker/u16:3+efi_rts_wq23:05:150
6479992500,249cyclictest15231-21kworker/u16:2+efi_rts_wq00:10:122
6480992490,247cyclictest7633-21kworker/u16:3+efi_rts_wq23:05:153
6477992490,248cyclictest8026-21kworker/u16:0+efi_rts_wq22:15:230
6477992470,246cyclictest11229-21kworker/u16:1+efi_rts_wq20:15:010
6480992450,244cyclictest11229-21kworker/u16:1+efi_rts_wq21:25:153
6480992440,243cyclictest422-21kworker/u16:3+efi_rts_wq00:35:163
6478992440,243cyclictest2441-21kworker/u16:0+efi_rts_wq23:15:161
6477992440,242cyclictest11229-21kworker/u16:1+efi_rts_wq22:45:180
6477992430,242cyclictest422-21kworker/u16:3+efi_rts_wq23:55:140
6478992420,241cyclictest11229-21kworker/u16:1+efi_rts_wq20:20:131
6478992410,240cyclictest11229-21kworker/u16:1+efi_rts_wq21:25:131
6480992390,237cyclictest11229-21kworker/u16:1+efi_rts_wq20:20:123
6479992390,238cyclictest20461-21kworker/u16:2+efi_rts_wq22:40:132
6480992280,227cyclictest20461-21kworker/u16:2+efi_rts_wq19:10:133
6478992280,227cyclictest11229-21kworker/u16:1+efi_rts_wq22:10:241
6480992270,226cyclictest20461-21kworker/u16:2+efi_rts_wq19:35:153
6479992250,224cyclictest20461-21kworker/u16:2+efi_rts_wq21:40:112
6478992240,222cyclictest11229-21kworker/u16:1+efi_rts_wq19:45:111
6477992240,223cyclictest11229-21kworker/u16:1+efi_rts_wq22:20:240
6480992230,222cyclictest20461-21kworker/u16:2+efi_rts_wq19:25:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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