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2026-06-08 - 10:36

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 Mon Jun 08, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310532319312,4sleep30-21swapper/319:06:573
309762319305,5sleep10-21swapper/119:05:591
312792315307,5sleep00-21swapper/019:09:510
309772313305,5sleep20-21swapper/219:06:002
31555993000,299cyclictest17108-21kworker/u16:0+efi_rts_wq19:50:131
31555992990,298cyclictest17108-21kworker/u16:0+efi_rts_wq21:39:451
31556992960,295cyclictest17108-21kworker/u16:0+efi_rts_wq19:50:132
31555992930,292cyclictest1792-21kworker/u16:3+efi_rts_wq20:10:111
31554992930,292cyclictest7883-21kworker/u16:2+efi_rts_wq23:25:130
31554992930,292cyclictest1792-21kworker/u16:3+efi_rts_wq21:24:400
31554992920,291cyclictest30461-21kworker/u16:0+efi_rts_wq23:10:010
31554992910,290cyclictest1792-21kworker/u16:3+efi_rts_wq21:44:460
31554992910,290cyclictest17108-21kworker/u16:0+efi_rts_wq21:49:460
31557992900,289cyclictest17108-21kworker/u16:0+efi_rts_wq20:05:123
31554992900,289cyclictest17108-21kworker/u16:0+efi_rts_wq20:45:130
31554992900,289cyclictest17108-21kworker/u16:0+efi_rts_wq20:25:150
31555992890,288cyclictest1792-21kworker/u16:3+efi_rts_wq19:45:111
31557992880,287cyclictest1792-21kworker/u16:3+efi_rts_wq22:35:123
31557992880,287cyclictest1792-21kworker/u16:3+efi_rts_wq21:20:123
31557992850,284cyclictest1792-21kworker/u16:3+efi_rts_wq19:45:113
31557992840,283cyclictest17108-21kworker/u16:0+efi_rts_wq21:05:113
31554992830,282cyclictest1792-21kworker/u16:3+efi_rts_wq21:00:120
31557992820,281cyclictest17108-21kworker/u16:0+efi_rts_wq22:04:483
31556992820,278cyclictest17108-21kworker/u16:0+efi_rts_wq21:15:142
31556992790,277cyclictest7883-21kworker/u16:2+efi_rts_wq22:50:132
31555992790,278cyclictest1792-21kworker/u16:3+efi_rts_wq20:39:331
31557992780,277cyclictest30461-21kworker/u16:0+efi_rts_wq23:50:133
31554992780,277cyclictest21940-21kworker/u16:1+efi_rts_wq00:36:120
31554992780,277cyclictest1792-21kworker/u16:3+efi_rts_wq19:25:140
31557992750,274cyclictest17108-21kworker/u16:0+efi_rts_wq19:54:243
31554992750,274cyclictest1792-21kworker/u16:3+efi_rts_wq21:34:420
31556992730,271cyclictest7883-21kworker/u16:2+efi_rts_wq23:00:132
31554992730,272cyclictest21940-21kworker/u16:1+efi_rts_wq23:55:140
31554992730,272cyclictest21940-21kworker/u16:1+efi_rts_wq23:55:130
31555992720,271cyclictest1792-21kworker/u16:3+efi_rts_wq20:00:131
31555992700,268cyclictest1792-21kworker/u16:3+efi_rts_wq21:40:131
31554992690,268cyclictest30461-21kworker/u16:0+efi_rts_wq23:40:070
31554992690,268cyclictest22481-21kworker/u16:1+efi_rts_wq22:49:560
31555992680,267cyclictest30461-21kworker/u16:0+efi_rts_wq23:30:111
31554992670,266cyclictest30461-21kworker/u16:0+efi_rts_wq00:15:130
31554992670,266cyclictest1792-21kworker/u16:3+efi_rts_wq22:05:130
31556992660,265cyclictest7883-21kworker/u16:2+efi_rts_wq23:20:042
31555992660,265cyclictest17108-21kworker/u16:0+efi_rts_wq20:15:131
31554992650,264cyclictest7883-21kworker/u16:2+efi_rts_wq23:15:030
31555992640,263cyclictest1792-21kworker/u16:3+efi_rts_wq22:25:131
31555992630,262cyclictest30461-21kworker/u16:0+efi_rts_wq23:45:131
31554992620,261cyclictest30461-21kworker/u16:0+efi_rts_wq00:01:060
31554992620,261cyclictest30461-21kworker/u16:0+efi_rts_wq00:01:050
31555992610,260cyclictest17108-21kworker/u16:0+efi_rts_wq22:00:121
31557992600,258cyclictest7883-21kworker/u16:2+efi_rts_wq23:00:133
31557992600,257cyclictest30461-21kworker/u16:0+efi_rts_wq23:15:113
31554992590,258cyclictest7883-21kworker/u16:2+efi_rts_wq22:54:590
31554992590,258cyclictest21940-21kworker/u16:1+efi_rts_wq00:10:130
31554992590,258cyclictest1792-21kworker/u16:3+efi_rts_wq22:15:120
31554992590,258cyclictest1792-21kworker/u16:3+efi_rts_wq19:15:010
31557992570,256cyclictest17108-21kworker/u16:0+efi_rts_wq22:20:123
31557992560,255cyclictest17108-21kworker/u16:0+efi_rts_wq21:45:133
31557992560,254cyclictest7883-21kworker/u16:2+efi_rts_wq22:34:543
31556992550,252cyclictest1792-21kworker/u16:3+efi_rts_wq19:35:122
31555992540,253cyclictest21940-21kworker/u16:1+efi_rts_wq00:00:181
31555992540,253cyclictest21940-21kworker/u16:1+efi_rts_wq00:00:171
31555992530,252cyclictest21940-21kworker/u16:1+efi_rts_wq00:20:121
31555992520,251cyclictest30461-21kworker/u16:0+efi_rts_wq00:15:131
31554992520,251cyclictest1792-21kworker/u16:3+efi_rts_wq19:55:130
31555992510,249cyclictest7883-21kworker/u16:2+efi_rts_wq23:00:131
31557992500,249cyclictest21940-21kworker/u16:1+efi_rts_wq00:11:073
31554992500,248cyclictest1792-21kworker/u16:3+efi_rts_wq20:20:130
31555992470,246cyclictest17108-21kworker/u16:0+efi_rts_wq22:10:131
31557992450,244cyclictest1792-21kworker/u16:3+efi_rts_wq22:25:143
31556992440,243cyclictest1792-21kworker/u16:3+efi_rts_wq20:10:122
31555992410,240cyclictest1792-21kworker/u16:3+efi_rts_wq20:30:121
31555992410,240cyclictest17108-21kworker/u16:0+efi_rts_wq21:10:121
31555992400,239cyclictest1792-21kworker/u16:3+efi_rts_wq22:15:121
31555992380,237cyclictest17108-21kworker/u16:0+efi_rts_wq19:20:131
31554992380,237cyclictest7883-21kworker/u16:2+efi_rts_wq23:20:130
31555992360,235cyclictest7883-21kworker/u16:2+efi_rts_wq22:40:151
31555992360,235cyclictest30461-21kworker/u16:0+efi_rts_wq23:51:031
31557992340,233cyclictest13216-21kworker/u16:3+efi_rts_wq23:35:113
31556992310,229cyclictest17108-21kworker/u16:0+efi_rts_wq22:20:112
31557992300,229cyclictest21940-21kworker/u16:1+efi_rts_wq23:55:143
31557992300,229cyclictest21940-21kworker/u16:1+efi_rts_wq23:55:133
31555992300,229cyclictest17108-21kworker/u16:0+efi_rts_wq20:29:311
31556992290,228cyclictest1792-21kworker/u16:3+efi_rts_wq19:55:122
31555992280,227cyclictest17108-21kworker/u16:0+efi_rts_wq20:55:131
31557992250,223cyclictest7883-21kworker/u16:2+efi_rts_wq23:20:143
31554992250,224cyclictest1792-21kworker/u16:3+efi_rts_wq19:30:130
31555992240,223cyclictest1792-21kworker/u16:3+efi_rts_wq19:10:121
31556992230,222cyclictest13216-21kworker/u16:3+efi_rts_wq23:35:052
31554992170,216cyclictest21940-21kworker/u16:1+efi_rts_wq00:25:130
31554992160,215cyclictest17108-21kworker/u16:0+efi_rts_wq20:05:130
31557992150,214cyclictest1792-21kworker/u16:3+efi_rts_wq19:10:113
31555992140,213cyclictest17108-21kworker/u16:0+efi_rts_wq20:09:261
31557992130,212cyclictest17108-21kworker/u16:0+efi_rts_wq22:10:133
31555992130,212cyclictest1792-21kworker/u16:3+efi_rts_wq20:44:331
31554992130,212cyclictest30461-21kworker/u16:0+efi_rts_wq23:50:120
31556992110,210cyclictest17108-21kworker/u16:0+efi_rts_wq21:10:122
31557992100,209cyclictest17108-21kworker/u16:0+efi_rts_wq19:40:133
31555992100,209cyclictest1792-21kworker/u16:3+efi_rts_wq19:15:011
31554992080,205cyclictest7883-21kworker/u16:2+efi_rts_wq22:40:140
31554992070,206cyclictest30461-21kworker/u16:0+efi_rts_wq23:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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