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2026-07-07 - 04:27

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 Jul 07, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29212330308,4sleep00-21swapper/019:08:430
27892321314,5sleep30-21swapper/319:07:033
27052315308,4sleep10-21swapper/119:05:561
27112314308,4sleep20-21swapper/219:06:012
3291993000,299cyclictest19991-21kworker/u16:2+efi_rts_wq21:15:123
3290993000,297cyclictest11552-21kworker/u16:1+efi_rts_wq22:20:122
3291992990,298cyclictest19991-21kworker/u16:2+efi_rts_wq20:15:013
3288992990,298cyclictest19991-21kworker/u16:2+efi_rts_wq22:15:240
3291992980,297cyclictest19991-21kworker/u16:2+efi_rts_wq21:25:133
3289992980,297cyclictest19991-21kworker/u16:2+efi_rts_wq20:35:131
3289992980,297cyclictest11552-21kworker/u16:1+efi_rts_wq23:35:121
3289992980,297cyclictest11552-21kworker/u16:1+efi_rts_wq23:35:121
3288992980,297cyclictest23286-21kworker/u16:3+efi_rts_wq20:30:120
3290992970,294cyclictest23286-21kworker/u16:3+efi_rts_wq19:50:122
3289992970,296cyclictest23286-21kworker/u16:3+efi_rts_wq20:45:141
3288992970,296cyclictest23286-21kworker/u16:3+efi_rts_wq21:20:140
3288992970,295cyclictest19991-21kworker/u16:2+efi_rts_wq21:25:110
3291992960,295cyclictest11552-21kworker/u16:1+efi_rts_wq22:50:123
3290992960,295cyclictest11552-21kworker/u16:1+efi_rts_wq00:00:122
3288992960,295cyclictest19991-21kworker/u16:2+efi_rts_wq20:15:120
3289992950,294cyclictest19991-21kworker/u16:2+efi_rts_wq00:15:461
3288992940,293cyclictest19991-21kworker/u16:2+efi_rts_wq00:20:110
3288992940,293cyclictest11552-21kworker/u16:1+efi_rts_wq22:55:170
3288992940,293cyclictest11552-21kworker/u16:1+efi_rts_wq00:00:110
3291992930,292cyclictest19991-21kworker/u16:2+efi_rts_wq00:25:143
3291992920,291cyclictest19991-21kworker/u16:2+efi_rts_wq21:35:163
3289992910,290cyclictest23286-21kworker/u16:3+efi_rts_wq20:20:011
3291992900,289cyclictest11552-21kworker/u16:1+efi_rts_wq22:25:143
3290992900,289cyclictest19991-21kworker/u16:2+efi_rts_wq22:30:142
3289992870,286cyclictest23286-21kworker/u16:3+efi_rts_wq19:50:131
3289992870,286cyclictest19991-21kworker/u16:2+efi_rts_wq19:45:101
3289992870,286cyclictest11552-21kworker/u16:1+efi_rts_wq22:30:281
3291992860,285cyclictest23286-21kworker/u16:3+efi_rts_wq19:29:523
3290992850,284cyclictest23286-21kworker/u16:3+efi_rts_wq21:40:132
3290992850,284cyclictest23286-21kworker/u16:3+efi_rts_wq19:15:112
3291992840,283cyclictest11552-21kworker/u16:1+efi_rts_wq23:20:143
3291992830,282cyclictest23286-21kworker/u16:3+efi_rts_wq19:39:543
3291992830,282cyclictest19991-21kworker/u16:2+efi_rts_wq22:15:133
3291992820,281cyclictest19991-21kworker/u16:2+efi_rts_wq23:50:423
3291992820,281cyclictest19991-21kworker/u16:2+efi_rts_wq20:55:143
3290992820,281cyclictest19991-21kworker/u16:2+efi_rts_wq21:10:112
3290992820,281cyclictest11552-21kworker/u16:1+efi_rts_wq22:35:122
3289992820,281cyclictest23286-21kworker/u16:3+efi_rts_wq21:35:151
3289992810,280cyclictest23286-21kworker/u16:3+efi_rts_wq19:20:141
3289992810,280cyclictest19991-21kworker/u16:2+efi_rts_wq00:25:481
3291992800,279cyclictest19991-21kworker/u16:2+efi_rts_wq00:15:133
3288992800,279cyclictest23286-21kworker/u16:3+efi_rts_wq19:20:150
3288992790,278cyclictest23286-21kworker/u16:3+efi_rts_wq21:45:120
3291992780,277cyclictest19991-21kworker/u16:2+efi_rts_wq22:45:123
3289992780,277cyclictest11552-21kworker/u16:1+efi_rts_wq23:55:431
3288992780,277cyclictest23286-21kworker/u16:3+efi_rts_wq21:50:120
3288992780,277cyclictest11552-21kworker/u16:1+efi_rts_wq23:20:130
3291992770,276cyclictest19991-21kworker/u16:2+efi_rts_wq20:25:153
3288992770,276cyclictest23286-21kworker/u16:3+efi_rts_wq20:40:120
3291992760,275cyclictest11552-21kworker/u16:1+efi_rts_wq23:15:133
3289992760,275cyclictest19991-21kworker/u16:2+efi_rts_wq20:25:151
3290992750,274cyclictest23286-21kworker/u16:3+efi_rts_wq20:05:122
3290992750,274cyclictest19991-21kworker/u16:2+efi_rts_wq23:00:132
3288992740,271cyclictest11552-21kworker/u16:1+efi_rts_wq22:35:120
3290992730,272cyclictest19991-21kworker/u16:2+efi_rts_wq21:20:132
3291992710,270cyclictest19991-21kworker/u16:2+efi_rts_wq19:19:513
3290992710,270cyclictest19991-21kworker/u16:2+efi_rts_wq19:55:152
3289992700,269cyclictest23286-21kworker/u16:3+efi_rts_wq19:40:141
3291992680,267cyclictest11552-21kworker/u16:1+efi_rts_wq23:40:123
3291992680,267cyclictest11552-21kworker/u16:1+efi_rts_wq22:35:283
3290992680,267cyclictest11552-21kworker/u16:1+efi_rts_wq23:40:122
3291992670,266cyclictest11552-21kworker/u16:1+efi_rts_wq00:05:133
3291992670,266cyclictest11552-21kworker/u16:1+efi_rts_wq00:00:433
3288992660,265cyclictest19991-21kworker/u16:2+efi_rts_wq00:35:490
3291992620,261cyclictest11552-21kworker/u16:1+efi_rts_wq23:45:123
3288992600,259cyclictest23286-21kworker/u16:3+efi_rts_wq21:00:130
3291992580,257cyclictest19991-21kworker/u16:2+efi_rts_wq19:34:533
3290992580,255cyclictest23286-21kworker/u16:3+efi_rts_wq21:15:132
3288992570,256cyclictest23286-21kworker/u16:3+efi_rts_wq22:10:240
3288992540,253cyclictest19991-21kworker/u16:2+efi_rts_wq21:10:140
3288992540,253cyclictest11552-21kworker/u16:1+efi_rts_wq22:25:140
3290992530,252cyclictest19991-21kworker/u16:2+efi_rts_wq20:55:142
3290992530,252cyclictest11552-21kworker/u16:1+efi_rts_wq23:35:122
3290992530,252cyclictest11552-21kworker/u16:1+efi_rts_wq23:35:122
3291992520,251cyclictest23286-21kworker/u16:3+efi_rts_wq21:05:133
3291992520,251cyclictest19991-21kworker/u16:2+efi_rts_wq23:25:153
3291992490,248cyclictest19991-21kworker/u16:2+efi_rts_wq23:05:123
3290992460,245cyclictest19991-21kworker/u16:2+efi_rts_wq23:05:332
3290992450,244cyclictest19991-21kworker/u16:2+efi_rts_wq20:50:132
3288992450,244cyclictest23286-21kworker/u16:3+efi_rts_wq22:05:110
3290992440,243cyclictest11552-21kworker/u16:1+efi_rts_wq23:25:152
3288992420,241cyclictest19991-21kworker/u16:2+efi_rts_wq22:30:130
3289992410,240cyclictest11552-21kworker/u16:1+efi_rts_wq23:15:351
3290992400,239cyclictest11552-21kworker/u16:1+efi_rts_wq23:50:122
3289992400,239cyclictest19991-21kworker/u16:2+efi_rts_wq21:25:111
3289992400,239cyclictest11552-21kworker/u16:1+efi_rts_wq23:10:121
3288992400,239cyclictest19991-21kworker/u16:2+efi_rts_wq22:45:130
3289992380,237cyclictest23286-21kworker/u16:3+efi_rts_wq20:09:591
3289992340,233cyclictest11552-21kworker/u16:1+efi_rts_wq22:40:141
3291992330,232cyclictest11552-21kworker/u16:1+efi_rts_wq23:35:123
3291992330,232cyclictest11552-21kworker/u16:1+efi_rts_wq23:35:123
3289992300,229cyclictest23286-21kworker/u16:3+efi_rts_wq22:00:121
3289992290,228cyclictest19991-21kworker/u16:2+efi_rts_wq23:45:411
3288992290,228cyclictest11552-21kworker/u16:1+efi_rts_wq23:10:120
3289992280,227cyclictest19991-21kworker/u16:2+efi_rts_wq21:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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