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2026-06-14 - 05:12

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 Jun 14, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312992322316,4sleep00-21swapper/019:08:270
312712318305,4sleep20-21swapper/219:08:052
313742315308,5sleep30-21swapper/319:09:263
311652314307,5sleep10-21swapper/119:06:441
31797993070,304cyclictest22798-21kworker/u16:2+efi_rts_wq22:00:130
31799993000,299cyclictest1499-21kworker/u16:0+efi_rts_wq23:05:121
31800992990,298cyclictest26324-21kworker/u16:3+efi_rts_wq23:35:142
31800992980,297cyclictest31404-21kworker/u16:1+efi_rts_wq23:00:312
31799992970,296cyclictest22798-21kworker/u16:2+efi_rts_wq21:35:111
31800992940,293cyclictest11131-21kworker/u16:4+efi_rts_wq23:40:112
31797992940,292cyclictest9009-21kworker/u16:1+efi_rts_wq00:25:120
31802992930,291cyclictest27258-21kworker/u16:0+efi_rts_wq19:15:013
31797992930,292cyclictest22798-21kworker/u16:2+efi_rts_wq21:00:130
31800992910,290cyclictest22798-21kworker/u16:2+efi_rts_wq20:45:092
31802992900,289cyclictest8541-21kworker/u16:1+efi_rts_wq19:45:133
31799992900,289cyclictest8541-21kworker/u16:1+efi_rts_wq19:39:571
31799992900,287cyclictest14987-21kworker/u16:4+efi_rts_wq21:55:161
31797992900,289cyclictest27258-21kworker/u16:0+efi_rts_wq20:00:110
31800992890,288cyclictest14987-21kworker/u16:4+efi_rts_wq21:45:122
31799992890,288cyclictest22798-21kworker/u16:2+efi_rts_wq21:30:121
31799992890,286cyclictest22798-21kworker/u16:2+efi_rts_wq22:40:131
31797992890,288cyclictest14987-21kworker/u16:4+efi_rts_wq21:10:130
31802992860,285cyclictest22798-21kworker/u16:2+efi_rts_wq22:25:123
31802992851,283cyclictest26324-21kworker/u16:3+efi_rts_wq22:45:293
31802992850,284cyclictest22798-21kworker/u16:2+efi_rts_wq20:10:123
31797992850,284cyclictest30874-21kworker/u16:0+efi_rts_wq00:05:130
31797992850,284cyclictest30874-21kworker/u16:0+efi_rts_wq00:05:130
31799992840,283cyclictest6070-21kworker/u16:1+efi_rts_wq19:10:121
31802992830,281cyclictest11131-21kworker/u16:4+efi_rts_wq23:20:133
31800992830,282cyclictest22798-21kworker/u16:2+efi_rts_wq22:20:242
31802992820,281cyclictest30874-21kworker/u16:0+efi_rts_wq00:10:163
31802992820,281cyclictest22798-21kworker/u16:2+efi_rts_wq20:25:133
31802992810,279cyclictest6646-21kworker/u16:2+efi_rts_wq23:10:103
31797992810,280cyclictest26324-21kworker/u16:3+efi_rts_wq23:30:130
31797992810,280cyclictest22798-21kworker/u16:2+efi_rts_wq22:35:120
31802992800,279cyclictest22798-21kworker/u16:2+efi_rts_wq21:25:123
31797992790,278cyclictest22798-21kworker/u16:2+efi_rts_wq20:15:040
31797992780,277cyclictest26324-21kworker/u16:3+efi_rts_wq23:25:350
31802992770,276cyclictest9009-21kworker/u16:1+efi_rts_wq00:35:123
31799992770,276cyclictest27258-21kworker/u16:0+efi_rts_wq20:50:131
31802992750,274cyclictest14987-21kworker/u16:4+efi_rts_wq21:05:123
31799992750,274cyclictest11131-21kworker/u16:4+efi_rts_wq23:45:391
31797992750,274cyclictest22798-21kworker/u16:2+efi_rts_wq20:20:130
31797992740,273cyclictest22798-21kworker/u16:2+efi_rts_wq22:30:260
31800992730,272cyclictest26324-21kworker/u16:3+efi_rts_wq23:55:132
31800992730,272cyclictest14987-21kworker/u16:4+efi_rts_wq21:00:132
31799992730,272cyclictest6646-21kworker/u16:2+efi_rts_wq23:10:101
31802992720,271cyclictest27258-21kworker/u16:0+efi_rts_wq19:30:133
31799992720,271cyclictest30874-21kworker/u16:0+efi_rts_wq00:15:121
31797992720,271cyclictest742-21kworker/u16:2+efi_rts_wq00:20:460
31802992710,270cyclictest22798-21kworker/u16:2+efi_rts_wq20:40:133
31799992710,270cyclictest26324-21kworker/u16:3+efi_rts_wq22:55:301
31799992700,269cyclictest22798-21kworker/u16:2+efi_rts_wq21:20:141
31800992690,268cyclictest22798-21kworker/u16:2+efi_rts_wq22:05:122
31802992680,267cyclictest26324-21kworker/u16:3+efi_rts_wq22:50:143
31799992680,267cyclictest22798-21kworker/u16:2+efi_rts_wq20:05:131
31800992660,265cyclictest27258-21kworker/u16:0+efi_rts_wq19:24:552
31797992660,265cyclictest9009-21kworker/u16:1+efi_rts_wq00:30:480
31797992650,264cyclictest25673-21kworker/u16:1+efi_rts_wq00:00:120
31797992650,264cyclictest25673-21kworker/u16:1+efi_rts_wq00:00:120
31797992650,263cyclictest22798-21kworker/u16:2+efi_rts_wq22:45:120
31797992640,263cyclictest27258-21kworker/u16:0+efi_rts_wq20:45:110
31802992630,262cyclictest26324-21kworker/u16:3+efi_rts_wq23:40:383
31802992630,262cyclictest14987-21kworker/u16:4+efi_rts_wq21:50:133
31800992630,262cyclictest14987-21kworker/u16:4+efi_rts_wq21:40:122
31802992600,259cyclictest26324-21kworker/u16:3+efi_rts_wq23:35:143
31797992600,259cyclictest11131-21kworker/u16:4+efi_rts_wq23:20:130
31799992590,258cyclictest6070-21kworker/u16:1+efi_rts_wq19:15:121
31797992590,258cyclictest27258-21kworker/u16:0+efi_rts_wq20:55:100
31802992580,257cyclictest27258-21kworker/u16:0+efi_rts_wq20:45:123
31802992570,256cyclictest22798-21kworker/u16:2+efi_rts_wq20:15:123
31799992570,255cyclictest26324-21kworker/u16:3+efi_rts_wq23:25:131
31797992560,255cyclictest22798-21kworker/u16:2+efi_rts_wq20:50:100
31797992560,253cyclictest27258-21kworker/u16:0+efi_rts_wq20:30:120
31802992550,254cyclictest14987-21kworker/u16:4+efi_rts_wq21:20:123
31799992550,254cyclictest11131-21kworker/u16:4+efi_rts_wq23:50:131
31797992550,254cyclictest6070-21kworker/u16:1+efi_rts_wq19:10:130
31802992530,252cyclictest22798-21kworker/u16:2+efi_rts_wq22:40:133
31799992530,252cyclictest22798-21kworker/u16:2+efi_rts_wq22:45:121
31799992530,251cyclictest12677-21kworker/u16:3+efi_rts_wq20:15:121
31797992520,251cyclictest27258-21kworker/u16:0+efi_rts_wq19:30:130
31797992500,249cyclictest1499-21kworker/u16:0+efi_rts_wq23:05:120
31797992490,248cyclictest8541-21kworker/u16:1+efi_rts_wq19:45:000
31797992490,248cyclictest14987-21kworker/u16:4+efi_rts_wq21:30:160
31802992460,245cyclictest26324-21kworker/u16:3+efi_rts_wq22:55:123
31800992450,244cyclictest22798-21kworker/u16:2+efi_rts_wq22:40:282
31797992440,243cyclictest6070-21kworker/u16:1+efi_rts_wq19:15:120
31797992440,243cyclictest22798-21kworker/u16:2+efi_rts_wq22:25:120
31799992410,240cyclictest1499-21kworker/u16:0+efi_rts_wq23:15:331
31797992390,238cyclictest22798-21kworker/u16:2+efi_rts_wq21:45:190
31802992360,235cyclictest9009-21kworker/u16:1+efi_rts_wq00:25:123
31802992330,232cyclictest22798-21kworker/u16:2+efi_rts_wq22:35:273
31802992320,231cyclictest14987-21kworker/u16:4+efi_rts_wq22:20:133
31797992320,231cyclictest30874-21kworker/u16:0+efi_rts_wq00:35:130
31799992230,222cyclictest2245-21kworker/u16:2+efi_rts_wq19:20:121
31800992220,221cyclictest22798-21kworker/u16:2+efi_rts_wq21:15:142
31797992200,219cyclictest22798-21kworker/u16:2+efi_rts_wq22:10:230
31797992200,219cyclictest14987-21kworker/u16:4+efi_rts_wq21:35:180
31802992180,217cyclictest8541-21kworker/u16:1+efi_rts_wq19:55:133
31800992180,217cyclictest30874-21kworker/u16:0+efi_rts_wq00:05:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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