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2025-10-14 - 08:53

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 Oct 14, 2025 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193782319304,5sleep20-21swapper/219:06:092
194562318303,5sleep30-21swapper/319:07:093
193562316308,5sleep00-21swapper/019:05:500
193522316303,10sleep10-21swapper/119:05:481
19947992950,294cyclictest11570-21kworker/u16:1+efi_rts_wq21:40:122
19948992920,291cyclictest11570-21kworker/u16:1+efi_rts_wq22:55:173
19948992910,290cyclictest2892-21kworker/u16:3+efi_rts_wq21:25:133
19947992910,290cyclictest10384-21kworker/u16:0+efi_rts_wq20:15:132
19946992890,288cyclictest7782-21kworker/u16:3+efi_rts_wq00:00:521
19946992890,288cyclictest17544-21kworker/u16:2+efi_rts_wq19:15:141
19946992890,286cyclictest2892-21kworker/u16:3+efi_rts_wq22:10:121
19946992880,287cyclictest11570-21kworker/u16:1+efi_rts_wq21:45:151
19948992870,286cyclictest2892-21kworker/u16:3+efi_rts_wq23:30:153
19948992870,286cyclictest10384-21kworker/u16:0+efi_rts_wq19:55:073
19946992870,286cyclictest2892-21kworker/u16:3+efi_rts_wq22:20:161
19946992870,286cyclictest17544-21kworker/u16:2+efi_rts_wq19:50:171
19946992870,286cyclictest11570-21kworker/u16:1+efi_rts_wq23:10:131
19948992850,284cyclictest28901-21kworker/u16:3+efi_rts_wq19:30:153
19948992840,283cyclictest28901-21kworker/u16:3+efi_rts_wq19:25:133
19947992840,283cyclictest10384-21kworker/u16:0+efi_rts_wq19:40:142
19946992840,283cyclictest29126-21kworker/u16:0+efi_rts_wq23:40:131
19948992830,282cyclictest29126-21kworker/u16:0+efi_rts_wq23:50:143
19948992830,282cyclictest17544-21kworker/u16:2+efi_rts_wq20:10:173
19948992820,281cyclictest17544-21kworker/u16:2+efi_rts_wq19:50:173
19948992810,277cyclictest7782-21kworker/u16:3+efi_rts_wq00:05:133
19948992800,279cyclictest11570-21kworker/u16:1+efi_rts_wq22:05:303
19946992800,279cyclictest2892-21kworker/u16:3+efi_rts_wq22:50:391
19946992790,278cyclictest7782-21kworker/u16:3+efi_rts_wq23:55:121
19948992780,277cyclictest10384-21kworker/u16:0+efi_rts_wq20:20:173
19947992770,276cyclictest29126-21kworker/u16:0+efi_rts_wq23:25:152
19946992770,276cyclictest17544-21kworker/u16:2+efi_rts_wq20:50:141
19948992750,274cyclictest28037-21kworker/u16:1+efi_rts_wq00:30:573
19946992750,274cyclictest11570-21kworker/u16:1+efi_rts_wq22:15:161
19946992740,273cyclictest11570-21kworker/u16:1+efi_rts_wq21:55:281
19945992740,273cyclictest11570-21kworker/u16:1+efi_rts_wq23:20:130
19946992720,271cyclictest17544-21kworker/u16:2+efi_rts_wq20:30:141
19946992710,269cyclictest2892-21kworker/u16:3+efi_rts_wq22:45:141
19945992710,270cyclictest2892-21kworker/u16:3+efi_rts_wq22:30:130
19946992700,269cyclictest17544-21kworker/u16:2+efi_rts_wq20:05:081
19945992680,267cyclictest11570-21kworker/u16:1+efi_rts_wq22:05:130
19946992670,266cyclictest2892-21kworker/u16:3+efi_rts_wq22:00:141
19945992670,266cyclictest28901-21kworker/u16:3+efi_rts_wq19:20:140
19948992660,265cyclictest10384-21kworker/u16:0+efi_rts_wq20:05:153
19948992650,264cyclictest11570-21kworker/u16:1+efi_rts_wq21:50:153
19948992650,262cyclictest11570-21kworker/u16:1+efi_rts_wq22:15:153
19947992650,264cyclictest17544-21kworker/u16:2+efi_rts_wq20:10:172
19947992640,263cyclictest7782-21kworker/u16:3+efi_rts_wq00:25:132
19947992640,263cyclictest29126-21kworker/u16:0+efi_rts_wq23:40:132
19947992640,262cyclictest17544-21kworker/u16:2+efi_rts_wq20:00:142
19948992630,262cyclictest29126-21kworker/u16:0+efi_rts_wq23:25:153
19947992620,261cyclictest10384-21kworker/u16:0+efi_rts_wq20:30:132
19947992610,260cyclictest14693-21kworker/u16:0+efi_rts_wq00:15:132
19947992570,256cyclictest11570-21kworker/u16:1+efi_rts_wq22:25:132
19947992550,254cyclictest14693-21kworker/u16:0+efi_rts_wq00:10:132
19947992540,253cyclictest17544-21kworker/u16:2+efi_rts_wq19:15:152
19946992540,253cyclictest11570-21kworker/u16:1+efi_rts_wq23:15:131
19946992540,253cyclictest11570-21kworker/u16:1+efi_rts_wq23:00:411
19948992530,252cyclictest11570-21kworker/u16:1+efi_rts_wq21:55:133
19946992520,251cyclictest17544-21kworker/u16:2+efi_rts_wq20:35:151
19948992500,249cyclictest14693-21kworker/u16:0+efi_rts_wq00:20:143
19948992500,248cyclictest17544-21kworker/u16:2+efi_rts_wq21:00:083
19946992470,246cyclictest2892-21kworker/u16:3+efi_rts_wq21:30:111
19946992470,246cyclictest17544-21kworker/u16:2+efi_rts_wq21:05:121
19946992470,245cyclictest2892-21kworker/u16:3+efi_rts_wq22:30:351
19948992460,245cyclictest17544-21kworker/u16:2+efi_rts_wq19:35:143
19947992460,245cyclictest2892-21kworker/u16:3+efi_rts_wq22:00:142
19947992450,244cyclictest2892-21kworker/u16:3+efi_rts_wq22:50:152
19947992440,243cyclictest7782-21kworker/u16:3+efi_rts_wq23:55:132
19945992440,243cyclictest2892-21kworker/u16:3+efi_rts_wq22:15:330
19948992430,242cyclictest14693-21kworker/u16:0+efi_rts_wq00:15:133
19948992420,241cyclictest29126-21kworker/u16:0+efi_rts_wq23:35:133
19948992390,238cyclictest11570-21kworker/u16:1+efi_rts_wq23:15:143
19947992380,237cyclictest17544-21kworker/u16:2+efi_rts_wq20:45:092
19948992370,236cyclictest28901-21kworker/u16:3+efi_rts_wq19:10:143
19947992370,236cyclictest2892-21kworker/u16:3+efi_rts_wq22:10:312
19945992370,236cyclictest10384-21kworker/u16:0+efi_rts_wq20:25:150
19946992360,235cyclictest17544-21kworker/u16:2+efi_rts_wq20:15:101
19946992350,234cyclictest28901-21kworker/u16:3+efi_rts_wq19:25:131
19945992340,233cyclictest10384-21kworker/u16:0+efi_rts_wq20:35:140
19946992330,232cyclictest2892-21kworker/u16:3+efi_rts_wq23:20:131
19946992330,232cyclictest2892-21kworker/u16:3+efi_rts_wq22:40:141
19946992320,231cyclictest14693-21kworker/u16:0+efi_rts_wq00:20:551
19948992310,230cyclictest11570-21kworker/u16:1+efi_rts_wq23:20:133
19947992300,229cyclictest14693-21kworker/u16:0+efi_rts_wq00:30:132
19946992300,229cyclictest11570-21kworker/u16:1+efi_rts_wq21:40:261
19946992290,228cyclictest11570-21kworker/u16:1+efi_rts_wq22:25:141
19947992240,223cyclictest2892-21kworker/u16:3+efi_rts_wq22:20:162
19946992240,223cyclictest10384-21kworker/u16:0+efi_rts_wq19:45:161
19947992230,222cyclictest7782-21kworker/u16:3+efi_rts_wq00:35:132
19945992230,222cyclictest2892-21kworker/u16:3+efi_rts_wq22:35:120
19947992220,221cyclictest2892-21kworker/u16:3+efi_rts_wq21:30:242
19946992190,218cyclictest10384-21kworker/u16:0+efi_rts_wq21:20:221
19946992170,216cyclictest17544-21kworker/u16:2+efi_rts_wq19:55:141
19945992170,216cyclictest14827-21kworker/u16:2+efi_rts_wq23:00:130
19948992150,214cyclictest17544-21kworker/u16:2+efi_rts_wq21:05:123
19947992150,214cyclictest29126-21kworker/u16:0+efi_rts_wq23:30:462
19946992150,214cyclictest2892-21kworker/u16:3+efi_rts_wq21:35:121
19946992150,214cyclictest14693-21kworker/u16:0+efi_rts_wq00:30:131
19948992140,213cyclictest2892-21kworker/u16:3+efi_rts_wq22:45:133
19948992130,212cyclictest10384-21kworker/u16:0+efi_rts_wq20:15:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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