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2026-07-17 - 11:50

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 Jul 17, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225322320306,5sleep20-21swapper/219:06:532
226182318303,5sleep30-21swapper/319:07:583
224162316309,5sleep00-21swapper/019:05:230
224792314306,5sleep10-21swapper/119:06:121
23044993000,297cyclictest18256-21kworker/u16:2+efi_rts_wq23:00:143
23044992980,295cyclictest23487-21kworker/u16:0+efi_rts_wq20:40:123
23044992970,296cyclictest18256-21kworker/u16:2+efi_rts_wq21:40:123
23043992970,296cyclictest17139-21kworker/u16:1+efi_rts_wq21:30:132
23043992960,295cyclictest23487-21kworker/u16:0+efi_rts_wq20:09:552
23042992940,293cyclictest19060-21kworker/u16:2+efi_rts_wq00:30:121
23044992920,291cyclictest23487-21kworker/u16:0+efi_rts_wq21:05:053
23042992920,291cyclictest21415-21kworker/u16:1+efi_rts_wq00:20:121
23041992920,291cyclictest23487-21kworker/u16:0+efi_rts_wq21:45:140
23041992910,290cyclictest23487-21kworker/u16:0+efi_rts_wq22:10:120
23044992900,289cyclictest17139-21kworker/u16:1+efi_rts_wq19:55:123
23042992890,288cyclictest23487-21kworker/u16:0+efi_rts_wq19:50:121
23042992880,287cyclictest752-21kworker/u16:1+efi_rts_wq23:45:341
23043992870,286cyclictest18256-21kworker/u16:2+efi_rts_wq21:50:152
23042992870,286cyclictest19060-21kworker/u16:2+efi_rts_wq00:10:131
23044992860,285cyclictest25535-21kworker/u16:3+efi_rts_wq23:15:133
23044992860,285cyclictest23487-21kworker/u16:0+efi_rts_wq19:49:513
23044992850,284cyclictest752-21kworker/u16:1+efi_rts_wq23:40:133
23044992850,284cyclictest16751-21kworker/u16:0+efi_rts_wq23:55:133
23042992850,284cyclictest17139-21kworker/u16:1+efi_rts_wq19:24:461
23043992840,283cyclictest17139-21kworker/u16:1+efi_rts_wq21:10:102
23042992840,283cyclictest17139-21kworker/u16:1+efi_rts_wq19:15:131
23042992840,282cyclictest18256-21kworker/u16:2+efi_rts_wq22:45:141
23044992830,281cyclictest25535-21kworker/u16:3+efi_rts_wq23:05:133
23042992820,281cyclictest23487-21kworker/u16:0+efi_rts_wq21:30:111
23042992820,281cyclictest23487-21kworker/u16:0+efi_rts_wq19:25:111
23041992820,281cyclictest23487-21kworker/u16:0+efi_rts_wq21:25:120
23041992820,281cyclictest23487-21kworker/u16:0+efi_rts_wq21:25:120
23043992800,279cyclictest23487-21kworker/u16:0+efi_rts_wq20:55:032
23043992790,278cyclictest23487-21kworker/u16:0+efi_rts_wq22:25:212
23043992790,278cyclictest21415-21kworker/u16:1+efi_rts_wq00:20:132
23043992770,276cyclictest23487-21kworker/u16:0+efi_rts_wq20:10:122
23043992770,276cyclictest21415-21kworker/u16:1+efi_rts_wq00:05:162
23043992770,276cyclictest18256-21kworker/u16:2+efi_rts_wq21:40:122
23044992750,274cyclictest17139-21kworker/u16:1+efi_rts_wq20:50:023
23042992740,273cyclictest17139-21kworker/u16:1+efi_rts_wq19:40:121
23042992730,271cyclictest752-21kworker/u16:1+efi_rts_wq23:35:131
23044992720,271cyclictest17139-21kworker/u16:1+efi_rts_wq19:20:103
23043992720,271cyclictest18256-21kworker/u16:2+efi_rts_wq22:20:122
23042992720,271cyclictest752-21kworker/u16:1+efi_rts_wq23:40:131
23042992720,271cyclictest23487-21kworker/u16:0+efi_rts_wq22:40:131
23043992700,269cyclictest25535-21kworker/u16:3+efi_rts_wq23:15:302
23044992690,268cyclictest23487-21kworker/u16:0+efi_rts_wq19:50:123
23044992690,268cyclictest18256-21kworker/u16:2+efi_rts_wq21:35:133
23044992690,268cyclictest17139-21kworker/u16:1+efi_rts_wq19:15:133
23043992690,268cyclictest23487-21kworker/u16:0+efi_rts_wq19:30:112
23042992690,268cyclictest21415-21kworker/u16:1+efi_rts_wq00:05:161
23043992680,266cyclictest18256-21kworker/u16:2+efi_rts_wq22:30:222
23044992650,264cyclictest752-21kworker/u16:1+efi_rts_wq23:45:143
23043992650,261cyclictest19060-21kworker/u16:2+efi_rts_wq00:15:132
23044992640,263cyclictest17139-21kworker/u16:1+efi_rts_wq19:14:443
23043992640,262cyclictest25535-21kworker/u16:3+efi_rts_wq23:10:142
23043992630,262cyclictest17139-21kworker/u16:1+efi_rts_wq20:00:132
23043992600,259cyclictest25535-21kworker/u16:3+efi_rts_wq23:40:342
23044992590,258cyclictest17139-21kworker/u16:1+efi_rts_wq19:35:113
23042992590,258cyclictest19060-21kworker/u16:2+efi_rts_wq00:25:121
23044992580,257cyclictest23487-21kworker/u16:0+efi_rts_wq19:29:473
23042992570,256cyclictest18256-21kworker/u16:2+efi_rts_wq22:55:131
23044992560,255cyclictest18256-21kworker/u16:2+efi_rts_wq21:55:133
23044992550,254cyclictest18256-21kworker/u16:2+efi_rts_wq22:55:263
23042992550,254cyclictest23487-21kworker/u16:0+efi_rts_wq22:35:141
23042992550,254cyclictest23487-21kworker/u16:0+efi_rts_wq21:20:131
23041992550,254cyclictest21415-21kworker/u16:1+efi_rts_wq00:35:120
23041992550,254cyclictest21415-21kworker/u16:1+efi_rts_wq00:00:370
23042992540,253cyclictest18256-21kworker/u16:2+efi_rts_wq22:50:251
23044992500,249cyclictest17139-21kworker/u16:1+efi_rts_wq21:15:133
23043992490,248cyclictest21415-21kworker/u16:1+efi_rts_wq00:35:132
23043992490,248cyclictest18256-21kworker/u16:2+efi_rts_wq21:55:122
23044992480,247cyclictest23487-21kworker/u16:0+efi_rts_wq22:30:123
23043992480,247cyclictest21415-21kworker/u16:1+efi_rts_wq00:00:142
23041992480,247cyclictest25535-21kworker/u16:3+efi_rts_wq23:25:320
23044992470,246cyclictest23487-21kworker/u16:0+efi_rts_wq21:45:143
23044992470,246cyclictest23487-21kworker/u16:0+efi_rts_wq20:45:133
23042992470,246cyclictest752-21kworker/u16:1+efi_rts_wq23:30:131
23043992450,244cyclictest17139-21kworker/u16:1+efi_rts_wq20:15:142
23042992450,244cyclictest23487-21kworker/u16:0+efi_rts_wq22:05:131
23043992430,242cyclictest25535-21kworker/u16:3+efi_rts_wq23:50:132
23044992410,239cyclictest17139-21kworker/u16:1+efi_rts_wq20:10:123
23041992410,240cyclictest23487-21kworker/u16:0+efi_rts_wq20:55:120
23044992400,238cyclictest18256-21kworker/u16:2+efi_rts_wq22:40:233
23044992380,237cyclictest23487-21kworker/u16:0+efi_rts_wq21:50:123
23044992340,233cyclictest752-21kworker/u16:1+efi_rts_wq23:25:143
23041992330,232cyclictest25535-21kworker/u16:3+efi_rts_wq23:10:130
23042992320,231cyclictest17139-21kworker/u16:1+efi_rts_wq19:35:121
23043992290,228cyclictest23487-21kworker/u16:0+efi_rts_wq19:54:522
23041992280,227cyclictest25535-21kworker/u16:3+efi_rts_wq23:20:310
23041992271,225cyclictest18256-21kworker/u16:2+efi_rts_wq22:45:140
23042992260,225cyclictest17139-21kworker/u16:1+efi_rts_wq19:55:121
23044992250,224cyclictest23487-21kworker/u16:0+efi_rts_wq21:00:123
23043992250,224cyclictest23487-21kworker/u16:0+efi_rts_wq20:50:122
23043992250,224cyclictest17139-21kworker/u16:1+efi_rts_wq21:15:132
23044992240,223cyclictest18256-21kworker/u16:2+efi_rts_wq22:15:133
23043992240,223cyclictest752-21kworker/u16:1+efi_rts_wq23:30:122
23042992240,222cyclictest752-21kworker/u16:1+efi_rts_wq23:20:111
23041992230,222cyclictest25535-21kworker/u16:3+efi_rts_wq23:15:130
23042992220,221cyclictest18256-21kworker/u16:2+efi_rts_wq21:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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