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2026-04-12 - 06:01

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 Apr 12, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
299572319313,4sleep10-21swapper/119:09:261
298082319307,4sleep20-21swapper/219:07:302
297502318310,5sleep30-21swapper/319:06:473
296822315309,4sleep00-21swapper/019:05:520
30381993140,313cyclictest12666-21kworker/u16:2+efi_rts_wq20:00:120
30381993140,312cyclictest30554-21kworker/u16:3+efi_rts_wq23:15:130
30386993130,312cyclictest4896-21kworker/u16:1+efi_rts_wq22:45:143
30386993130,312cyclictest12666-21kworker/u16:2+efi_rts_wq19:25:133
30384993130,312cyclictest12666-21kworker/u16:2+efi_rts_wq19:15:122
30382993130,312cyclictest4896-21kworker/u16:1+efi_rts_wq20:15:131
30384993110,310cyclictest12666-21kworker/u16:2+efi_rts_wq21:15:132
30381993090,308cyclictest4896-21kworker/u16:1+efi_rts_wq20:25:130
30384993070,306cyclictest29488-21kworker/u16:2+efi_rts_wq23:55:132
30382993071,305cyclictest11223-21kworker/u16:1+efi_rts_wq00:00:331
30384993060,305cyclictest12666-21kworker/u16:2+efi_rts_wq22:30:152
30386993050,304cyclictest4896-21kworker/u16:1+efi_rts_wq19:40:113
30384993050,304cyclictest30554-21kworker/u16:3+efi_rts_wq23:15:232
30381993050,304cyclictest12666-21kworker/u16:2+efi_rts_wq20:50:130
30381993040,303cyclictest12666-21kworker/u16:2+efi_rts_wq22:25:100
30382993030,302cyclictest4896-21kworker/u16:1+efi_rts_wq22:15:131
30382993020,301cyclictest4896-21kworker/u16:1+efi_rts_wq21:05:011
30382993000,299cyclictest11858-21kworker/u16:3+efi_rts_wq00:35:131
30382993000,299cyclictest11223-21kworker/u16:1+efi_rts_wq23:45:121
30386992990,298cyclictest11223-21kworker/u16:1+efi_rts_wq23:35:283
30382992990,298cyclictest4896-21kworker/u16:1+efi_rts_wq21:55:141
30382992980,297cyclictest30554-21kworker/u16:3+efi_rts_wq23:25:131
30386992970,296cyclictest29488-21kworker/u16:2+efi_rts_wq23:50:133
30382992970,296cyclictest30554-21kworker/u16:3+efi_rts_wq23:30:281
30381992970,296cyclictest12666-21kworker/u16:2+efi_rts_wq20:14:530
30382992960,295cyclictest4896-21kworker/u16:1+efi_rts_wq21:45:091
30381992960,295cyclictest11223-21kworker/u16:1+efi_rts_wq23:45:120
30386992950,294cyclictest12666-21kworker/u16:2+efi_rts_wq20:40:133
30382992950,294cyclictest4896-21kworker/u16:1+efi_rts_wq21:20:131
30382992950,294cyclictest4896-21kworker/u16:1+efi_rts_wq21:20:131
30386992940,293cyclictest12666-21kworker/u16:2+efi_rts_wq19:45:133
30381992940,293cyclictest12666-21kworker/u16:2+efi_rts_wq21:25:060
30381992940,292cyclictest29488-21kworker/u16:2+efi_rts_wq23:55:140
30384992930,292cyclictest7605-21kworker/u16:0+efi_rts_wq00:05:342
30384992930,292cyclictest29488-21kworker/u16:2+efi_rts_wq23:35:112
30386992920,291cyclictest4896-21kworker/u16:1+efi_rts_wq21:35:133
30381992920,291cyclictest12666-21kworker/u16:2+efi_rts_wq20:20:110
30382992910,290cyclictest4896-21kworker/u16:1+efi_rts_wq19:14:411
30381992910,290cyclictest4896-21kworker/u16:1+efi_rts_wq19:19:420
30381992910,290cyclictest12666-21kworker/u16:2+efi_rts_wq22:10:130
30381992900,289cyclictest12666-21kworker/u16:2+efi_rts_wq19:25:130
30386992880,287cyclictest7605-21kworker/u16:0+efi_rts_wq00:25:383
30384992870,286cyclictest12666-21kworker/u16:2+efi_rts_wq21:50:132
30384992860,285cyclictest12666-21kworker/u16:2+efi_rts_wq22:25:112
30384992860,285cyclictest12666-21kworker/u16:2+efi_rts_wq21:20:132
30384992860,285cyclictest12666-21kworker/u16:2+efi_rts_wq21:20:122
30386992850,284cyclictest4896-21kworker/u16:1+efi_rts_wq21:30:053
30386992830,282cyclictest12666-21kworker/u16:2+efi_rts_wq19:59:503
30382992820,281cyclictest4896-21kworker/u16:1+efi_rts_wq22:40:131
30381992810,280cyclictest12666-21kworker/u16:2+efi_rts_wq21:40:130
30384992800,279cyclictest4896-21kworker/u16:1+efi_rts_wq20:05:132
30384992800,277cyclictest11223-21kworker/u16:1+efi_rts_wq23:40:132
30382992800,279cyclictest12666-21kworker/u16:2+efi_rts_wq19:50:131
30386992780,277cyclictest12666-21kworker/u16:2+efi_rts_wq20:50:133
30386992780,277cyclictest12666-21kworker/u16:2+efi_rts_wq20:35:143
30382992770,276cyclictest7605-21kworker/u16:0+efi_rts_wq00:20:111
30381992770,276cyclictest30554-21kworker/u16:3+efi_rts_wq22:50:130
30386992760,275cyclictest4896-21kworker/u16:1+efi_rts_wq20:45:153
30386992750,274cyclictest4896-21kworker/u16:1+efi_rts_wq21:25:143
30382992730,272cyclictest12666-21kworker/u16:2+efi_rts_wq21:40:131
30386992720,271cyclictest11223-21kworker/u16:1+efi_rts_wq23:30:123
30386992720,269cyclictest12666-21kworker/u16:2+efi_rts_wq21:45:143
30382992720,271cyclictest4896-21kworker/u16:1+efi_rts_wq20:25:131
30381992700,269cyclictest4896-21kworker/u16:1+efi_rts_wq19:24:430
30381992700,269cyclictest11858-21kworker/u16:3+efi_rts_wq00:30:140
30382992690,268cyclictest4896-21kworker/u16:1+efi_rts_wq20:50:131
30382992690,268cyclictest11858-21kworker/u16:3+efi_rts_wq00:10:121
30381992680,267cyclictest11858-21kworker/u16:3+efi_rts_wq00:05:120
30382992660,263cyclictest30554-21kworker/u16:3+efi_rts_wq23:20:131
30381992660,265cyclictest11223-21kworker/u16:1+efi_rts_wq23:25:130
30384992640,263cyclictest12666-21kworker/u16:2+efi_rts_wq20:30:152
30382992620,261cyclictest11858-21kworker/u16:3+efi_rts_wq00:15:131
30382992620,259cyclictest4896-21kworker/u16:1+efi_rts_wq20:40:131
30381992620,261cyclictest29488-21kworker/u16:2+efi_rts_wq23:35:120
30386992600,259cyclictest7605-21kworker/u16:0+efi_rts_wq00:20:113
30382992600,259cyclictest11223-21kworker/u16:1+efi_rts_wq23:10:131
30382992580,257cyclictest12666-21kworker/u16:2+efi_rts_wq20:35:131
30381992580,257cyclictest4896-21kworker/u16:1+efi_rts_wq20:05:120
30384992570,256cyclictest4896-21kworker/u16:1+efi_rts_wq21:10:142
30384992570,256cyclictest30554-21kworker/u16:3+efi_rts_wq22:50:192
30386992560,255cyclictest4896-21kworker/u16:1+efi_rts_wq22:10:123
30386992560,255cyclictest4896-21kworker/u16:1+efi_rts_wq21:20:133
30386992560,255cyclictest4896-21kworker/u16:1+efi_rts_wq21:20:123
30386992560,255cyclictest30554-21kworker/u16:3+efi_rts_wq23:00:133
30381992560,255cyclictest4896-21kworker/u16:1+efi_rts_wq19:30:120
30381992530,252cyclictest4896-21kworker/u16:1+efi_rts_wq20:15:130
30386992520,251cyclictest4896-21kworker/u16:1+efi_rts_wq19:15:123
30386992500,249cyclictest30554-21kworker/u16:3+efi_rts_wq22:55:133
30386992500,248cyclictest11223-21kworker/u16:1+efi_rts_wq23:40:133
30381992490,248cyclictest12666-21kworker/u16:2+efi_rts_wq19:44:470
30386992480,247cyclictest12666-21kworker/u16:2+efi_rts_wq22:05:143
30382992480,247cyclictest7605-21kworker/u16:0+efi_rts_wq00:25:141
30382992480,247cyclictest4896-21kworker/u16:1+efi_rts_wq19:20:121
30386992470,246cyclictest11858-21kworker/u16:3+efi_rts_wq00:10:123
30386992460,245cyclictest4896-21kworker/u16:1+efi_rts_wq19:35:123
30386992450,244cyclictest4896-21kworker/u16:1+efi_rts_wq20:24:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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