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2026-08-11 - 05:47

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 Aug 11, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178822319305,4sleep30-21swapper/319:09:113
176972317306,8sleep00-21swapper/019:06:470
175952315308,5sleep20-21swapper/219:05:292
177442314306,5sleep10-21swapper/119:07:231
18212993070,303cyclictest5144-21kworker/u16:3+efi_rts_wq23:15:150
18213993000,299cyclictest23295-21kworker/u16:2+efi_rts_wq19:20:141
18213992990,298cyclictest980-21kworker/u16:0+efi_rts_wq20:25:001
18214992980,297cyclictest29404-21kworker/u16:1+efi_rts_wq23:35:122
18213992980,297cyclictest27651-21kworker/u16:2+efi_rts_wq00:30:451
18215992970,296cyclictest24485-21kworker/u16:0+efi_rts_wq22:00:163
18214992970,296cyclictest10341-21kworker/u16:3+efi_rts_wq22:10:182
18215992960,295cyclictest28146-21kworker/u16:1+efi_rts_wq21:30:153
18212992950,294cyclictest23295-21kworker/u16:2+efi_rts_wq19:25:120
18214992940,293cyclictest30122-21kworker/u16:1+efi_rts_wq19:10:132
18212992940,293cyclictest12670-21kworker/u16:3+efi_rts_wq00:05:390
18212992940,293cyclictest10978-21kworker/u16:1+efi_rts_wq20:10:120
18214992930,292cyclictest30122-21kworker/u16:1+efi_rts_wq19:15:142
18214992920,291cyclictest28146-21kworker/u16:1+efi_rts_wq20:55:122
18213992920,291cyclictest10341-21kworker/u16:3+efi_rts_wq21:45:131
18214992910,290cyclictest5577-21kworker/u16:3+efi_rts_wq23:40:132
18214992900,289cyclictest8650-21kworker/u16:4+efi_rts_wq23:45:372
18213992900,289cyclictest26514-21kworker/u16:3+efi_rts_wq19:30:141
18212992880,287cyclictest10978-21kworker/u16:1+efi_rts_wq20:20:120
18212992880,287cyclictest10341-21kworker/u16:3+efi_rts_wq22:10:120
18214992870,286cyclictest980-21kworker/u16:0+efi_rts_wq21:05:142
18212992870,286cyclictest12670-21kworker/u16:3+efi_rts_wq00:00:150
18212992870,285cyclictest29404-21kworker/u16:1+efi_rts_wq23:25:130
18214992860,285cyclictest5144-21kworker/u16:3+efi_rts_wq22:55:132
18214992860,285cyclictest5144-21kworker/u16:3+efi_rts_wq22:30:122
18213992860,285cyclictest29404-21kworker/u16:1+efi_rts_wq23:35:121
18215992850,284cyclictest23295-21kworker/u16:2+efi_rts_wq19:50:133
18213992850,284cyclictest28146-21kworker/u16:1+efi_rts_wq21:25:121
18213992840,281cyclictest24485-21kworker/u16:0+efi_rts_wq22:05:131
18213992830,282cyclictest31929-21kworker/u16:0+efi_rts_wq23:30:131
18213992830,282cyclictest10341-21kworker/u16:3+efi_rts_wq22:15:131
18212992830,282cyclictest31929-21kworker/u16:0+efi_rts_wq00:20:160
18215992820,281cyclictest25736-21kworker/u16:3+efi_rts_wq21:00:123
18215992820,281cyclictest17244-21kworker/u16:1+efi_rts_wq00:00:383
18214992820,279cyclictest5778-21kworker/u16:3+efi_rts_wq21:15:162
18212992810,280cyclictest23295-21kworker/u16:2+efi_rts_wq19:45:120
18212992800,279cyclictest12670-21kworker/u16:3+efi_rts_wq00:15:130
18212992800,277cyclictest980-21kworker/u16:0+efi_rts_wq20:50:120
18214992770,276cyclictest23295-21kworker/u16:2+efi_rts_wq19:35:102
18214992770,276cyclictest12670-21kworker/u16:3+efi_rts_wq00:10:132
18214992760,275cyclictest24485-21kworker/u16:0+efi_rts_wq22:05:132
18213992750,274cyclictest25736-21kworker/u16:3+efi_rts_wq20:50:031
18214992740,273cyclictest980-21kworker/u16:0+efi_rts_wq20:35:022
18215992730,272cyclictest17244-21kworker/u16:1+efi_rts_wq00:05:173
18212992710,270cyclictest8190-21kworker/u16:2+efi_rts_wq21:50:130
18213992700,269cyclictest30318-21kworker/u16:2+efi_rts_wq23:10:121
18213992670,266cyclictest10341-21kworker/u16:3+efi_rts_wq21:55:111
18212992660,265cyclictest23295-21kworker/u16:2+efi_rts_wq20:30:110
18212992650,264cyclictest23295-21kworker/u16:2+efi_rts_wq19:24:480
18212992630,262cyclictest31292-21kworker/u16:3+efi_rts_wq20:00:130
18212992620,261cyclictest27418-21kworker/u16:0+efi_rts_wq19:19:470
18212992620,261cyclictest17244-21kworker/u16:1+efi_rts_wq00:35:450
18212992610,260cyclictest9193-21kworker/u16:0+efi_rts_wq23:00:120
18212992610,260cyclictest9193-21kworker/u16:0+efi_rts_wq23:00:120
18214992600,259cyclictest23295-21kworker/u16:2+efi_rts_wq20:15:142
18214992580,257cyclictest8650-21kworker/u16:4+efi_rts_wq23:50:122
18215992570,255cyclictest29404-21kworker/u16:1+efi_rts_wq23:25:133
18214992570,256cyclictest12670-21kworker/u16:3+efi_rts_wq00:00:162
18215992560,255cyclictest12670-21kworker/u16:3+efi_rts_wq23:55:113
18213992560,255cyclictest5144-21kworker/u16:3+efi_rts_wq22:30:121
18212992560,255cyclictest980-21kworker/u16:0+efi_rts_wq20:05:140
18212992560,255cyclictest10978-21kworker/u16:1+efi_rts_wq20:19:580
18212992550,254cyclictest10341-21kworker/u16:3+efi_rts_wq21:45:140
18214992540,252cyclictest9193-21kworker/u16:0+efi_rts_wq22:45:152
18213992540,253cyclictest28146-21kworker/u16:1+efi_rts_wq21:20:151
18213992520,251cyclictest10978-21kworker/u16:1+efi_rts_wq20:10:121
18214992500,249cyclictest23624-21kworker/u16:1+efi_rts_wq20:40:142
18213992500,249cyclictest16493-21kworker/u16:0+efi_rts_wq21:40:131
18214992490,248cyclictest30318-21kworker/u16:2+efi_rts_wq23:30:332
18214992490,248cyclictest17244-21kworker/u16:1+efi_rts_wq00:35:142
18215992470,246cyclictest5144-21kworker/u16:3+efi_rts_wq22:50:153
18213992420,241cyclictest23295-21kworker/u16:2+efi_rts_wq20:45:141
18212992410,240cyclictest10341-21kworker/u16:3+efi_rts_wq21:55:110
18212992400,239cyclictest30318-21kworker/u16:2+efi_rts_wq22:40:130
18215992380,236cyclictest20914-21kworker/u16:1+efi_rts_wq22:35:113
18212992380,237cyclictest20914-21kworker/u16:1+efi_rts_wq22:35:100
18213992370,234cyclictest5144-21kworker/u16:3+efi_rts_wq23:20:141
18215992320,231cyclictest30122-21kworker/u16:1+efi_rts_wq19:15:153
18214992310,228cyclictest31929-21kworker/u16:0+efi_rts_wq00:20:162
18215992300,229cyclictest5144-21kworker/u16:3+efi_rts_wq22:45:263
18212992290,228cyclictest5144-21kworker/u16:3+efi_rts_wq22:30:230
18214992280,227cyclictest30318-21kworker/u16:2+efi_rts_wq22:35:112
18213992280,227cyclictest5144-21kworker/u16:3+efi_rts_wq22:50:151
18215992270,226cyclictest9193-21kworker/u16:0+efi_rts_wq23:00:123
18215992270,226cyclictest9193-21kworker/u16:0+efi_rts_wq23:00:123
18213992260,225cyclictest31929-21kworker/u16:0+efi_rts_wq23:40:371
18215992210,220cyclictest980-21kworker/u16:0+efi_rts_wq20:50:133
18212992200,219cyclictest17244-21kworker/u16:1+efi_rts_wq00:30:130
18215992190,218cyclictest23295-21kworker/u16:2+efi_rts_wq19:10:133
18212992180,217cyclictest30318-21kworker/u16:2+efi_rts_wq23:10:130
18214992170,216cyclictest28146-21kworker/u16:1+efi_rts_wq21:20:082
18214992170,215cyclictest30318-21kworker/u16:2+efi_rts_wq23:05:142
18212992160,215cyclictest30122-21kworker/u16:1+efi_rts_wq19:10:130
18213992150,214cyclictest24485-21kworker/u16:0+efi_rts_wq22:25:131
18215992140,213cyclictest8190-21kworker/u16:2+efi_rts_wq21:50:123
18212992140,213cyclictest28146-21kworker/u16:1+efi_rts_wq21:10:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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