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2026-03-28 - 14:43

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 Sat Mar 28, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150162325318,5sleep00-21swapper/019:05:590
149972321306,4sleep10-21swapper/119:05:441
150832319305,5sleep30-21swapper/319:06:513
15594993150,314cyclictest5778-21kworker/u16:1+efi_rts_wq21:45:121
150922315308,5sleep20-21swapper/219:06:582
15594993140,313cyclictest19074-21kworker/u16:1+efi_rts_wq23:05:131
15594993130,310cyclictest15630-21kworker/u16:0+efi_rts_wq20:40:111
15596993120,311cyclictest15630-21kworker/u16:0+efi_rts_wq19:45:123
15595993120,311cyclictest779-21kworker/u16:2+efi_rts_wq00:15:112
15595993120,311cyclictest27669-21kworker/u16:3+efi_rts_wq00:00:142
15595993110,310cyclictest15630-21kworker/u16:0+efi_rts_wq20:50:122
15594993110,309cyclictest779-21kworker/u16:2+efi_rts_wq23:25:111
15596993100,309cyclictest5778-21kworker/u16:1+efi_rts_wq20:35:133
15594993100,309cyclictest27669-21kworker/u16:3+efi_rts_wq00:11:201
15594993090,306cyclictest5778-21kworker/u16:1+efi_rts_wq22:00:141
15596993080,307cyclictest5778-21kworker/u16:1+efi_rts_wq21:30:133
15594993080,307cyclictest5778-21kworker/u16:1+efi_rts_wq21:05:111
15595993060,305cyclictest5778-21kworker/u16:1+efi_rts_wq21:50:132
15596993050,304cyclictest779-21kworker/u16:2+efi_rts_wq23:50:133
15596993050,304cyclictest5778-21kworker/u16:1+efi_rts_wq22:25:123
15595993050,304cyclictest5778-21kworker/u16:1+efi_rts_wq20:35:132
15596993040,303cyclictest19074-21kworker/u16:1+efi_rts_wq23:05:133
15594993040,303cyclictest15630-21kworker/u16:0+efi_rts_wq22:34:471
15594993040,303cyclictest15630-21kworker/u16:0+efi_rts_wq19:59:171
15596993030,302cyclictest27669-21kworker/u16:3+efi_rts_wq23:45:123
15596993030,302cyclictest15630-21kworker/u16:0+efi_rts_wq22:45:123
15593993030,302cyclictest19074-21kworker/u16:1+efi_rts_wq23:00:120
15593993020,301cyclictest27669-21kworker/u16:3+efi_rts_wq23:30:130
15596993010,300cyclictest5778-21kworker/u16:1+efi_rts_wq21:05:113
15595993010,300cyclictest779-21kworker/u16:2+efi_rts_wq00:35:122
15595993010,300cyclictest15630-21kworker/u16:0+efi_rts_wq21:40:102
15595992980,297cyclictest5778-21kworker/u16:1+efi_rts_wq21:35:122
15595992980,297cyclictest5778-21kworker/u16:1+efi_rts_wq21:35:122
15595992980,297cyclictest5778-21kworker/u16:1+efi_rts_wq20:20:132
15594992980,297cyclictest779-21kworker/u16:2+efi_rts_wq23:40:121
15594992980,297cyclictest15630-21kworker/u16:0+efi_rts_wq20:30:121
15594992970,296cyclictest779-21kworker/u16:2+efi_rts_wq23:34:571
15596992960,295cyclictest19074-21kworker/u16:1+efi_rts_wq23:20:123
15596992960,295cyclictest15630-21kworker/u16:0+efi_rts_wq20:10:123
15595992960,295cyclictest15630-21kworker/u16:0+efi_rts_wq21:55:122
15596992950,294cyclictest27669-21kworker/u16:3+efi_rts_wq00:10:113
15595992950,294cyclictest5778-21kworker/u16:1+efi_rts_wq22:04:402
15593992940,293cyclictest779-21kworker/u16:2+efi_rts_wq23:35:130
15594992930,292cyclictest779-21kworker/u16:2+efi_rts_wq23:55:111
15596992920,290cyclictest27669-21kworker/u16:3+efi_rts_wq23:15:133
15596992910,290cyclictest27669-21kworker/u16:3+efi_rts_wq00:25:133
15595992910,290cyclictest5778-21kworker/u16:1+efi_rts_wq21:30:142
15595992910,290cyclictest15630-21kworker/u16:0+efi_rts_wq21:10:142
15594992900,289cyclictest5778-21kworker/u16:1+efi_rts_wq20:49:251
15596992890,288cyclictest15630-21kworker/u16:0+efi_rts_wq22:30:133
15595992890,288cyclictest15630-21kworker/u16:0+efi_rts_wq21:00:132
15596992880,287cyclictest5778-21kworker/u16:1+efi_rts_wq22:15:113
15594992880,285cyclictest5778-21kworker/u16:1+efi_rts_wq19:50:131
15594992870,286cyclictest15630-21kworker/u16:0+efi_rts_wq22:05:131
15593992870,286cyclictest15630-21kworker/u16:0+efi_rts_wq20:10:120
15596992860,283cyclictest15630-21kworker/u16:0+efi_rts_wq20:05:133
15595992860,285cyclictest15630-21kworker/u16:0+efi_rts_wq22:24:442
15593992860,285cyclictest15630-21kworker/u16:0+efi_rts_wq20:50:120
15595992850,284cyclictest15630-21kworker/u16:0+efi_rts_wq22:40:102
15593992850,284cyclictest5778-21kworker/u16:1+efi_rts_wq19:54:150
15593992830,282cyclictest5778-21kworker/u16:1+efi_rts_wq22:29:450
15594992820,281cyclictest19074-21kworker/u16:1+efi_rts_wq22:59:501
15593992820,281cyclictest19074-21kworker/u16:1+efi_rts_wq23:19:530
15594992780,277cyclictest15630-21kworker/u16:0+efi_rts_wq19:49:141
15593992760,275cyclictest5778-21kworker/u16:1+efi_rts_wq19:40:130
15595992740,273cyclictest5778-21kworker/u16:1+efi_rts_wq19:15:012
15594992740,273cyclictest779-21kworker/u16:2+efi_rts_wq00:05:141
15594992740,273cyclictest15630-21kworker/u16:0+efi_rts_wq20:24:211
15594992740,271cyclictest15630-21kworker/u16:0+efi_rts_wq21:10:141
15593992740,273cyclictest15630-21kworker/u16:0+efi_rts_wq19:45:130
15596992720,271cyclictest5778-21kworker/u16:1+efi_rts_wq20:55:123
15595992720,271cyclictest15630-21kworker/u16:0+efi_rts_wq20:30:122
15596992700,269cyclictest15630-21kworker/u16:0+efi_rts_wq19:20:143
15596992700,267cyclictest15630-21kworker/u16:0+efi_rts_wq19:35:133
15594992700,269cyclictest15630-21kworker/u16:0+efi_rts_wq19:30:141
15594992690,268cyclictest15630-21kworker/u16:0+efi_rts_wq21:55:121
15596992680,267cyclictest779-21kworker/u16:2+efi_rts_wq00:30:133
15595992680,267cyclictest19074-21kworker/u16:1+efi_rts_wq23:20:122
15593992660,265cyclictest779-21kworker/u16:2+efi_rts_wq00:30:130
15594992630,262cyclictest27669-21kworker/u16:3+efi_rts_wq23:04:511
15596992600,259cyclictest5778-21kworker/u16:1+efi_rts_wq21:50:133
15595992600,259cyclictest779-21kworker/u16:2+efi_rts_wq23:40:112
15593992600,259cyclictest5778-21kworker/u16:1+efi_rts_wq19:14:080
15596992590,258cyclictest5778-21kworker/u16:1+efi_rts_wq20:15:123
15595992590,258cyclictest779-21kworker/u16:2+efi_rts_wq23:50:132
15596992580,257cyclictest15630-21kworker/u16:0+efi_rts_wq21:19:323
15595992570,256cyclictest5778-21kworker/u16:1+efi_rts_wq20:25:132
15595992560,255cyclictest15630-21kworker/u16:0+efi_rts_wq21:25:122
15596992550,254cyclictest15630-21kworker/u16:0+efi_rts_wq21:29:333
15593992540,253cyclictest21815-21kworker/u16:2+efi_rts_wq22:50:140
15596992520,251cyclictest5778-21kworker/u16:1+efi_rts_wq20:25:133
15596992520,251cyclictest27669-21kworker/u16:3+efi_rts_wq23:30:133
15595992520,251cyclictest15630-21kworker/u16:0+efi_rts_wq22:05:132
15593992510,250cyclictest15630-21kworker/u16:0+efi_rts_wq21:34:340
15595992490,248cyclictest779-21kworker/u16:2+efi_rts_wq00:06:192
15593992470,246cyclictest5778-21kworker/u16:1+efi_rts_wq20:45:150
15595992460,245cyclictest15630-21kworker/u16:0+efi_rts_wq19:30:142
15594992460,245cyclictest5778-21kworker/u16:1+efi_rts_wq19:19:091
15595992450,244cyclictest15630-21kworker/u16:0+efi_rts_wq20:40:102
15596992430,242cyclictest15630-21kworker/u16:0+efi_rts_wq20:00:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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