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2026-01-09 - 05:23

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 Fri Jan 09, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126942320306,5sleep20-21swapper/219:07:302
126802319312,4sleep30-21swapper/319:07:193
126732316308,5sleep10-21swapper/119:07:131
13158993150,314cyclictest32114-21kworker/u16:3+efi_rts_wq00:00:111
13158993150,314cyclictest29338-21kworker/u16:2+efi_rts_wq19:20:111
13158993150,313cyclictest17850-21kworker/u16:0+efi_rts_wq22:35:121
13157993150,314cyclictest20694-21kworker/u16:2+efi_rts_wq23:25:140
13160993140,312cyclictest10432-21kworker/u16:1+efi_rts_wq23:00:123
13158993140,313cyclictest6646-21kworker/u16:2+efi_rts_wq00:30:121
110472314307,5sleep00-21swapper/019:05:040
13157993130,312cyclictest6646-21kworker/u16:2+efi_rts_wq00:25:490
13160993120,311cyclictest6646-21kworker/u16:2+efi_rts_wq00:15:143
13160993120,311cyclictest32114-21kworker/u16:3+efi_rts_wq20:55:113
13158993120,311cyclictest19637-21kworker/u16:1+efi_rts_wq20:55:081
13160993110,310cyclictest17850-21kworker/u16:0+efi_rts_wq22:50:133
13159993110,310cyclictest29338-21kworker/u16:2+efi_rts_wq19:25:132
13158993110,309cyclictest32114-21kworker/u16:3+efi_rts_wq22:45:131
13157993100,309cyclictest29338-21kworker/u16:2+efi_rts_wq19:34:530
13159993080,307cyclictest32114-21kworker/u16:3+efi_rts_wq22:55:102
13160993070,306cyclictest32114-21kworker/u16:3+efi_rts_wq21:10:123
13159993070,306cyclictest19637-21kworker/u16:1+efi_rts_wq21:55:122
13158993070,306cyclictest32114-21kworker/u16:3+efi_rts_wq19:10:111
13157993070,306cyclictest32114-21kworker/u16:3+efi_rts_wq23:05:340
13160993050,304cyclictest32114-21kworker/u16:3+efi_rts_wq20:50:073
13160993050,304cyclictest32114-21kworker/u16:3+efi_rts_wq20:40:123
13158993040,303cyclictest6646-21kworker/u16:2+efi_rts_wq23:55:131
13160993030,302cyclictest32114-21kworker/u16:3+efi_rts_wq22:00:203
13160993030,302cyclictest25583-21kworker/u16:0+efi_rts_wq23:35:123
13159993010,300cyclictest32114-21kworker/u16:3+efi_rts_wq00:05:462
13160993000,299cyclictest25583-21kworker/u16:0+efi_rts_wq23:30:133
13159993000,299cyclictest29338-21kworker/u16:2+efi_rts_wq20:25:032
13158992990,298cyclictest6646-21kworker/u16:2+efi_rts_wq00:35:121
13157992990,298cyclictest19637-21kworker/u16:1+efi_rts_wq21:25:130
13160992980,297cyclictest29338-21kworker/u16:2+efi_rts_wq20:10:113
13160992970,296cyclictest32114-21kworker/u16:3+efi_rts_wq22:40:133
13158992970,296cyclictest32114-21kworker/u16:3+efi_rts_wq00:20:111
13160992950,294cyclictest32114-21kworker/u16:3+efi_rts_wq19:19:513
13160992940,293cyclictest19637-21kworker/u16:1+efi_rts_wq22:05:133
13159992930,292cyclictest32114-21kworker/u16:3+efi_rts_wq20:55:112
13158992920,291cyclictest19637-21kworker/u16:1+efi_rts_wq21:30:121
13159992910,290cyclictest32114-21kworker/u16:3+efi_rts_wq20:45:132
13157992910,290cyclictest32114-21kworker/u16:3+efi_rts_wq21:45:130
13159992890,288cyclictest19637-21kworker/u16:1+efi_rts_wq21:00:132
13157992890,288cyclictest32114-21kworker/u16:3+efi_rts_wq00:00:440
13157992890,287cyclictest25583-21kworker/u16:0+efi_rts_wq23:20:360
13160992870,286cyclictest19637-21kworker/u16:1+efi_rts_wq22:25:253
13158992860,285cyclictest32114-21kworker/u16:3+efi_rts_wq22:10:131
13157992850,284cyclictest6646-21kworker/u16:2+efi_rts_wq00:35:510
13160992840,283cyclictest32114-21kworker/u16:3+efi_rts_wq23:50:113
13160992820,281cyclictest32114-21kworker/u16:3+efi_rts_wq00:05:113
13158992820,281cyclictest19637-21kworker/u16:1+efi_rts_wq22:25:121
13159992810,280cyclictest19637-21kworker/u16:1+efi_rts_wq22:05:122
13157992810,280cyclictest29338-21kworker/u16:2+efi_rts_wq20:35:120
13160992800,279cyclictest29338-21kworker/u16:2+efi_rts_wq19:49:573
13160992780,277cyclictest32114-21kworker/u16:3+efi_rts_wq19:35:133
13158992770,276cyclictest20694-21kworker/u16:2+efi_rts_wq23:20:101
13160992710,270cyclictest6646-21kworker/u16:2+efi_rts_wq00:10:133
13160992710,270cyclictest32114-21kworker/u16:3+efi_rts_wq21:35:133
13158992710,268cyclictest29338-21kworker/u16:2+efi_rts_wq20:20:131
13160992700,269cyclictest29338-21kworker/u16:2+efi_rts_wq19:25:133
13158992700,269cyclictest32114-21kworker/u16:3+efi_rts_wq22:20:131
13157992700,269cyclictest32114-21kworker/u16:3+efi_rts_wq20:05:120
13160992680,267cyclictest32114-21kworker/u16:3+efi_rts_wq22:30:123
13158992680,267cyclictest20694-21kworker/u16:2+efi_rts_wq23:15:131
13157992680,267cyclictest19637-21kworker/u16:1+efi_rts_wq21:40:110
13160992670,266cyclictest29338-21kworker/u16:2+efi_rts_wq20:00:103
13157992660,265cyclictest32114-21kworker/u16:3+efi_rts_wq20:15:130
13159992630,262cyclictest19637-21kworker/u16:1+efi_rts_wq22:15:122
13159992620,261cyclictest19637-21kworker/u16:1+efi_rts_wq21:10:122
13157992610,260cyclictest6646-21kworker/u16:2+efi_rts_wq00:15:140
13158992600,259cyclictest29338-21kworker/u16:2+efi_rts_wq19:40:111
13158992600,259cyclictest20694-21kworker/u16:2+efi_rts_wq23:10:341
13160992590,258cyclictest19637-21kworker/u16:1+efi_rts_wq21:25:143
13158992590,258cyclictest19637-21kworker/u16:1+efi_rts_wq22:30:131
13160992580,257cyclictest32114-21kworker/u16:3+efi_rts_wq19:10:113
13157992580,257cyclictest29338-21kworker/u16:2+efi_rts_wq19:55:110
13158992550,254cyclictest19637-21kworker/u16:1+efi_rts_wq21:55:191
13159992500,248cyclictest25583-21kworker/u16:0+efi_rts_wq23:45:122
13158992490,248cyclictest32114-21kworker/u16:3+efi_rts_wq21:20:141
13157992490,248cyclictest19637-21kworker/u16:1+efi_rts_wq21:55:120
13160992470,246cyclictest19637-21kworker/u16:1+efi_rts_wq21:15:113
13158992460,245cyclictest29338-21kworker/u16:2+efi_rts_wq20:15:011
13160992450,244cyclictest32114-21kworker/u16:3+efi_rts_wq21:50:143
13160992450,244cyclictest32114-21kworker/u16:3+efi_rts_wq21:50:133
13157992450,244cyclictest32114-21kworker/u16:3+efi_rts_wq21:50:190
13157992450,244cyclictest32114-21kworker/u16:3+efi_rts_wq21:50:180
13157992440,243cyclictest6646-21kworker/u16:2+efi_rts_wq00:10:460
13160992420,241cyclictest32114-21kworker/u16:3+efi_rts_wq21:45:123
13157992420,241cyclictest29338-21kworker/u16:2+efi_rts_wq20:05:000
13159992390,236cyclictest32114-21kworker/u16:3+efi_rts_wq22:45:132
13157992380,237cyclictest32114-21kworker/u16:3+efi_rts_wq19:50:140
13159992370,236cyclictest32114-21kworker/u16:3+efi_rts_wq19:15:022
13159992360,235cyclictest10432-21kworker/u16:1+efi_rts_wq23:15:352
13157992350,234cyclictest32114-21kworker/u16:3+efi_rts_wq19:24:510
13157992350,234cyclictest32114-21kworker/u16:3+efi_rts_wq19:14:490
13158992340,233cyclictest20694-21kworker/u16:2+efi_rts_wq23:25:131
13158992340,233cyclictest19637-21kworker/u16:1+efi_rts_wq21:15:111
13157992320,231cyclictest32114-21kworker/u16:3+efi_rts_wq22:00:130
13160992310,230cyclictest25583-21kworker/u16:0+efi_rts_wq23:45:113
13157992310,230cyclictest29338-21kworker/u16:2+efi_rts_wq20:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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