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2026-03-16 - 05:15

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 Mar 16, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
153592334304,5sleep20-21swapper/219:09:462
150322326319,4sleep30-21swapper/319:05:353
150522317303,5sleep10-21swapper/119:05:491
152672316309,5sleep00-21swapper/019:08:360
15641993150,314cyclictest16542-21kworker/u16:1+efi_rts_wq20:10:140
15642993140,313cyclictest16542-21kworker/u16:1+efi_rts_wq21:40:111
15644993130,312cyclictest18838-21kworker/u16:3+efi_rts_wq20:49:293
15641993120,311cyclictest18838-21kworker/u16:3+efi_rts_wq22:15:120
15644993100,309cyclictest18838-21kworker/u16:3+efi_rts_wq19:20:113
15641993100,309cyclictest16542-21kworker/u16:1+efi_rts_wq20:00:140
15643993090,308cyclictest18838-21kworker/u16:3+efi_rts_wq21:20:132
15644993080,306cyclictest22048-21kworker/u16:0+efi_rts_wq22:50:123
15642993080,307cyclictest18838-21kworker/u16:3+efi_rts_wq20:15:131
15641993080,307cyclictest18838-21kworker/u16:3+efi_rts_wq20:24:260
15643993070,306cyclictest22048-21kworker/u16:0+efi_rts_wq22:59:562
15644993050,304cyclictest18838-21kworker/u16:3+efi_rts_wq19:25:133
15643993050,304cyclictest18838-21kworker/u16:3+efi_rts_wq19:35:142
15642993050,304cyclictest22048-21kworker/u16:0+efi_rts_wq22:50:121
15644993040,303cyclictest18838-21kworker/u16:3+efi_rts_wq22:25:123
15644993040,303cyclictest16542-21kworker/u16:1+efi_rts_wq20:35:133
15642993040,303cyclictest18838-21kworker/u16:3+efi_rts_wq19:15:131
15642993040,303cyclictest16542-21kworker/u16:1+efi_rts_wq20:14:241
15641993040,303cyclictest18838-21kworker/u16:3+efi_rts_wq19:15:000
15644993030,302cyclictest16542-21kworker/u16:1+efi_rts_wq19:40:123
15642993030,302cyclictest18838-21kworker/u16:3+efi_rts_wq23:35:141
15642993030,302cyclictest16542-21kworker/u16:1+efi_rts_wq21:39:401
15644993020,301cyclictest18838-21kworker/u16:3+efi_rts_wq22:10:123
15643993020,301cyclictest18838-21kworker/u16:3+efi_rts_wq22:29:502
15644992990,298cyclictest18838-21kworker/u16:3+efi_rts_wq20:59:313
15643992990,298cyclictest16542-21kworker/u16:1+efi_rts_wq20:25:132
15641992990,298cyclictest18838-21kworker/u16:3+efi_rts_wq00:36:100
15641992970,296cyclictest22048-21kworker/u16:0+efi_rts_wq23:20:120
15641992970,296cyclictest22048-21kworker/u16:0+efi_rts_wq23:05:140
15641992970,296cyclictest16542-21kworker/u16:1+efi_rts_wq21:40:120
15644992960,295cyclictest22048-21kworker/u16:0+efi_rts_wq23:15:133
15642992960,295cyclictest18838-21kworker/u16:3+efi_rts_wq22:40:111
15643992950,294cyclictest18838-21kworker/u16:3+efi_rts_wq21:05:112
15643992950,294cyclictest18838-21kworker/u16:3+efi_rts_wq21:00:112
15641992950,294cyclictest22048-21kworker/u16:0+efi_rts_wq00:15:120
15641992950,294cyclictest18838-21kworker/u16:3+efi_rts_wq00:11:060
15644992940,293cyclictest18838-21kworker/u16:3+efi_rts_wq22:39:523
15642992940,293cyclictest18838-21kworker/u16:3+efi_rts_wq19:45:121
15641992940,293cyclictest18838-21kworker/u16:3+efi_rts_wq19:10:130
15644992930,292cyclictest16542-21kworker/u16:1+efi_rts_wq19:30:123
15644992920,291cyclictest18838-21kworker/u16:3+efi_rts_wq22:40:123
15642992920,291cyclictest18838-21kworker/u16:3+efi_rts_wq21:20:131
15642992920,291cyclictest16542-21kworker/u16:1+efi_rts_wq20:25:131
15643992910,290cyclictest18838-21kworker/u16:3+efi_rts_wq22:20:132
15641992910,290cyclictest18838-21kworker/u16:3+efi_rts_wq22:25:120
15643992900,289cyclictest16542-21kworker/u16:1+efi_rts_wq21:45:112
15641992900,289cyclictest18838-21kworker/u16:3+efi_rts_wq23:10:130
15644992890,288cyclictest16542-21kworker/u16:1+efi_rts_wq21:44:413
15642992890,288cyclictest18838-21kworker/u16:3+efi_rts_wq23:30:021
15642992880,287cyclictest18838-21kworker/u16:3+efi_rts_wq22:15:131
15642992870,286cyclictest18838-21kworker/u16:3+efi_rts_wq00:20:131
15644992860,285cyclictest18838-21kworker/u16:3+efi_rts_wq22:20:143
15644992860,285cyclictest18838-21kworker/u16:3+efi_rts_wq19:10:123
15644992860,285cyclictest18838-21kworker/u16:3+efi_rts_wq00:10:123
15644992840,283cyclictest22048-21kworker/u16:0+efi_rts_wq23:55:133
15642992840,283cyclictest16542-21kworker/u16:1+efi_rts_wq22:35:111
15642992830,281cyclictest18838-21kworker/u16:3+efi_rts_wq22:55:131
15644992820,281cyclictest18838-21kworker/u16:3+efi_rts_wq00:25:113
15642992820,281cyclictest16542-21kworker/u16:1+efi_rts_wq19:54:211
15642992810,280cyclictest16542-21kworker/u16:1+efi_rts_wq22:45:111
15641992810,280cyclictest18838-21kworker/u16:3+efi_rts_wq23:50:120
15642992800,279cyclictest18838-21kworker/u16:3+efi_rts_wq22:30:121
15644992790,278cyclictest18838-21kworker/u16:3+efi_rts_wq21:09:333
15644992770,276cyclictest16542-21kworker/u16:1+efi_rts_wq19:50:123
15641992770,276cyclictest18838-21kworker/u16:3+efi_rts_wq20:40:110
15643992740,273cyclictest22048-21kworker/u16:0+efi_rts_wq22:50:132
15644992730,272cyclictest18838-21kworker/u16:3+efi_rts_wq21:30:133
15642992720,271cyclictest18838-21kworker/u16:3+efi_rts_wq20:04:221
15644992710,270cyclictest18838-21kworker/u16:3+efi_rts_wq21:15:113
15643992710,270cyclictest18838-21kworker/u16:3+efi_rts_wq23:51:022
15644992700,269cyclictest18838-21kworker/u16:3+efi_rts_wq21:49:403
15643992700,269cyclictest18838-21kworker/u16:3+efi_rts_wq20:05:132
15641992690,268cyclictest16542-21kworker/u16:1+efi_rts_wq22:34:500
15643992680,266cyclictest18838-21kworker/u16:3+efi_rts_wq22:30:122
15643992660,265cyclictest18838-21kworker/u16:3+efi_rts_wq21:25:122
15644992650,264cyclictest22048-21kworker/u16:0+efi_rts_wq00:05:133
15641992650,264cyclictest18838-21kworker/u16:3+efi_rts_wq21:14:340
15642992640,263cyclictest18838-21kworker/u16:3+efi_rts_wq23:50:131
15642992640,263cyclictest16542-21kworker/u16:1+efi_rts_wq19:40:121
15643992630,262cyclictest22048-21kworker/u16:0+efi_rts_wq23:45:132
15642992620,261cyclictest16542-21kworker/u16:1+efi_rts_wq21:10:131
15643992600,259cyclictest18838-21kworker/u16:3+efi_rts_wq19:49:202
15641992600,259cyclictest18838-21kworker/u16:3+efi_rts_wq20:45:130
15644992580,257cyclictest18838-21kworker/u16:3+efi_rts_wq19:45:133
15642992560,255cyclictest22048-21kworker/u16:0+efi_rts_wq00:31:101
15642992560,255cyclictest16542-21kworker/u16:1+efi_rts_wq22:09:451
15642992560,255cyclictest16542-21kworker/u16:1+efi_rts_wq22:09:441
15641992560,255cyclictest18838-21kworker/u16:3+efi_rts_wq22:05:130
15641992560,255cyclictest18838-21kworker/u16:3+efi_rts_wq22:05:120
15644992550,254cyclictest22048-21kworker/u16:0+efi_rts_wq23:00:113
15642992550,254cyclictest16542-21kworker/u16:1+efi_rts_wq20:44:301
15641992540,253cyclictest16542-21kworker/u16:1+efi_rts_wq20:25:130
15642992530,251cyclictest22048-21kworker/u16:0+efi_rts_wq23:55:121
15641992530,252cyclictest18838-21kworker/u16:3+efi_rts_wq21:50:120
15642992520,251cyclictest22048-21kworker/u16:0+efi_rts_wq23:00:111
15643992500,249cyclictest18838-21kworker/u16:3+efi_rts_wq21:55:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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