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2025-12-28 - 05:02

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 Sun Dec 28, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205932351304,29sleep00-21swapper/019:07:380
205852327320,5sleep20-21swapper/219:07:332
207382319313,4sleep10-21swapper/119:09:321
206832317310,4sleep30-21swapper/319:08:503
21043993110,310cyclictest2898-21kworker/u16:3+efi_rts_wq19:30:133
21043993110,310cyclictest22938-21kworker/u16:0+efi_rts_wq00:10:143
21041993110,310cyclictest27338-21kworker/u16:3+efi_rts_wq23:55:141
21041993100,309cyclictest2898-21kworker/u16:3+efi_rts_wq19:30:141
21040993100,309cyclictest633-21kworker/u16:2+efi_rts_wq20:35:140
21043993080,307cyclictest22938-21kworker/u16:0+efi_rts_wq00:30:133
21041993080,307cyclictest8630-21kworker/u16:3+efi_rts_wq21:40:421
21040993080,307cyclictest20320-21kworker/u16:1+efi_rts_wq21:10:360
21043993061,304cyclictest2761-21kworker/u16:1+efi_rts_wq19:50:133
21041993060,305cyclictest28773-21kworker/u16:0+efi_rts_wq19:25:151
21042993040,303cyclictest27338-21kworker/u16:3+efi_rts_wq23:50:122
21043993020,301cyclictest19718-21kworker/u16:0+efi_rts_wq23:05:133
21040993020,301cyclictest633-21kworker/u16:2+efi_rts_wq20:30:160
21040992990,298cyclictest28773-21kworker/u16:0+efi_rts_wq19:40:150
21043992980,297cyclictest15857-21kworker/u16:2+efi_rts_wq00:05:153
21041992980,297cyclictest3487-21kworker/u16:4+efi_rts_wq22:35:541
21041992980,295cyclictest20320-21kworker/u16:1+efi_rts_wq20:40:141
21040992950,294cyclictest633-21kworker/u16:2+efi_rts_wq21:15:120
21040992950,294cyclictest633-21kworker/u16:2+efi_rts_wq21:00:140
21043992940,293cyclictest20320-21kworker/u16:1+efi_rts_wq22:05:143
21040992940,293cyclictest17156-21kworker/u16:1+efi_rts_wq22:55:130
21041992910,290cyclictest633-21kworker/u16:2+efi_rts_wq20:55:151
21041992910,290cyclictest20320-21kworker/u16:1+efi_rts_wq22:00:161
21040992890,288cyclictest2761-21kworker/u16:1+efi_rts_wq20:00:170
21040992880,287cyclictest7925-21kworker/u16:0+efi_rts_wq22:30:130
21040992880,287cyclictest7925-21kworker/u16:0+efi_rts_wq22:30:120
21043992870,286cyclictest633-21kworker/u16:2+efi_rts_wq21:25:143
21041992820,281cyclictest28773-21kworker/u16:0+efi_rts_wq19:20:151
21040992820,281cyclictest633-21kworker/u16:2+efi_rts_wq20:10:150
21040992820,281cyclictest15857-21kworker/u16:2+efi_rts_wq00:31:170
21043992810,280cyclictest29881-21kworker/u16:1+efi_rts_wq23:30:143
21042992810,280cyclictest8630-21kworker/u16:3+efi_rts_wq22:25:142
21042992800,279cyclictest8630-21kworker/u16:3+efi_rts_wq22:10:132
21040992800,279cyclictest24807-21kworker/u16:2+efi_rts_wq23:11:010
21042992780,277cyclictest27338-21kworker/u16:3+efi_rts_wq23:31:062
21043992760,275cyclictest8630-21kworker/u16:3+efi_rts_wq21:50:163
21040992760,275cyclictest22938-21kworker/u16:0+efi_rts_wq00:15:120
21043992750,274cyclictest22938-21kworker/u16:0+efi_rts_wq00:20:133
21042992750,274cyclictest633-21kworker/u16:2+efi_rts_wq20:25:162
21041992750,274cyclictest20320-21kworker/u16:1+efi_rts_wq21:10:131
21043992730,272cyclictest2761-21kworker/u16:1+efi_rts_wq20:00:163
21041992730,272cyclictest20320-21kworker/u16:1+efi_rts_wq21:45:141
21040992730,272cyclictest17156-21kworker/u16:1+efi_rts_wq22:45:570
21042992720,271cyclictest633-21kworker/u16:2+efi_rts_wq20:15:142
21040992720,269cyclictest8630-21kworker/u16:3+efi_rts_wq22:10:140
21041992710,270cyclictest2761-21kworker/u16:1+efi_rts_wq19:55:141
21041992710,269cyclictest3487-21kworker/u16:4+efi_rts_wq22:40:131
21040992710,270cyclictest15857-21kworker/u16:2+efi_rts_wq00:05:150
21040992690,268cyclictest2898-21kworker/u16:3+efi_rts_wq19:35:120
21043992680,267cyclictest28773-21kworker/u16:0+efi_rts_wq19:25:123
21041992660,265cyclictest2898-21kworker/u16:3+efi_rts_wq19:35:171
21041992650,264cyclictest8630-21kworker/u16:3+efi_rts_wq21:35:141
21041992650,264cyclictest28773-21kworker/u16:0+efi_rts_wq19:40:181
21041992640,263cyclictest633-21kworker/u16:2+efi_rts_wq20:05:161
21041992640,263cyclictest29881-21kworker/u16:1+efi_rts_wq23:20:121
21040992640,263cyclictest633-21kworker/u16:2+efi_rts_wq20:50:320
21040992630,262cyclictest22938-21kworker/u16:0+efi_rts_wq00:20:110
21040992620,261cyclictest8630-21kworker/u16:3+efi_rts_wq22:25:130
21040992600,259cyclictest15857-21kworker/u16:2+efi_rts_wq00:35:140
21043992590,258cyclictest29881-21kworker/u16:1+efi_rts_wq23:25:163
21041992590,258cyclictest3487-21kworker/u16:4+efi_rts_wq22:55:591
21041992590,258cyclictest20320-21kworker/u16:1+efi_rts_wq22:15:491
21040992580,257cyclictest27338-21kworker/u16:3+efi_rts_wq23:46:090
21043992550,254cyclictest8630-21kworker/u16:3+efi_rts_wq22:25:133
21041992540,253cyclictest3487-21kworker/u16:4+efi_rts_wq22:45:121
21041992520,251cyclictest13685-21kworker/u16:0+efi_rts_wq20:20:131
21043992510,250cyclictest29881-21kworker/u16:1+efi_rts_wq00:00:143
21042992490,248cyclictest20320-21kworker/u16:1+efi_rts_wq22:00:162
21041992490,248cyclictest29881-21kworker/u16:1+efi_rts_wq23:35:131
21043992480,247cyclictest20320-21kworker/u16:1+efi_rts_wq22:20:173
21040992470,246cyclictest29881-21kworker/u16:1+efi_rts_wq23:35:130
21040992470,246cyclictest24807-21kworker/u16:2+efi_rts_wq23:15:140
21040992470,244cyclictest633-21kworker/u16:2+efi_rts_wq19:45:150
21041992450,243cyclictest27338-21kworker/u16:3+efi_rts_wq23:45:161
21041992440,243cyclictest633-21kworker/u16:2+efi_rts_wq21:15:121
21043992420,241cyclictest633-21kworker/u16:2+efi_rts_wq20:15:143
21042992420,241cyclictest28773-21kworker/u16:0+efi_rts_wq19:10:152
21041992420,241cyclictest8630-21kworker/u16:3+efi_rts_wq21:55:141
21041992420,241cyclictest28773-21kworker/u16:0+efi_rts_wq19:45:191
21041992390,238cyclictest3487-21kworker/u16:4+efi_rts_wq22:50:131
21040992390,238cyclictest3487-21kworker/u16:4+efi_rts_wq22:50:570
21041992370,236cyclictest2761-21kworker/u16:1+efi_rts_wq20:00:221
21043992350,234cyclictest29881-21kworker/u16:1+efi_rts_wq23:20:133
21043992350,234cyclictest20320-21kworker/u16:1+efi_rts_wq21:45:143
21041992340,233cyclictest20320-21kworker/u16:1+efi_rts_wq21:25:381
21043992330,231cyclictest3487-21kworker/u16:4+efi_rts_wq22:35:133
21041992310,230cyclictest28773-21kworker/u16:0+efi_rts_wq19:10:151
21042992290,228cyclictest8630-21kworker/u16:3+efi_rts_wq21:30:142
21041992290,228cyclictest28773-21kworker/u16:0+efi_rts_wq19:15:151
21040992290,227cyclictest2761-21kworker/u16:1+efi_rts_wq19:50:140
21040992280,227cyclictest27338-21kworker/u16:3+efi_rts_wq23:41:070
21040992280,227cyclictest20320-21kworker/u16:1+efi_rts_wq22:20:170
21043992270,226cyclictest633-21kworker/u16:2+efi_rts_wq20:40:293
21042992260,225cyclictest29881-21kworker/u16:1+efi_rts_wq23:35:132
21041992260,225cyclictest29881-21kworker/u16:1+efi_rts_wq00:00:131
21043992210,220cyclictest2898-21kworker/u16:3+efi_rts_wq19:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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