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2026-06-20 - 04:37

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 Jun 20, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128792334312,4sleep30-21swapper/319:05:273
131922319312,4sleep10-21swapper/119:09:241
132202316303,4sleep20-21swapper/219:09:452
130232314308,4sleep00-21swapper/019:07:150
13504993020,301cyclictest32580-21kworker/u16:2+efi_rts_wq23:50:121
13506993010,300cyclictest9638-21kworker/u16:3+efi_rts_wq19:14:153
13504992990,298cyclictest10521-21kworker/u16:3+efi_rts_wq23:05:111
13503992980,296cyclictest13312-21kworker/u16:1+efi_rts_wq23:25:130
13506992960,295cyclictest15829-21kworker/u16:0+efi_rts_wq21:44:443
13505992960,294cyclictest18320-21kworker/u16:2+efi_rts_wq22:49:582
13503992960,294cyclictest21297-21kworker/u16:2+efi_rts_wq23:15:100
13505992940,293cyclictest11543-21kworker/u16:0+efi_rts_wq00:25:132
13503992940,293cyclictest15829-21kworker/u16:0+efi_rts_wq21:40:120
13506992930,292cyclictest15829-21kworker/u16:0+efi_rts_wq21:05:133
13506992930,292cyclictest15829-21kworker/u16:0+efi_rts_wq20:15:133
13505992930,292cyclictest15829-21kworker/u16:0+efi_rts_wq19:10:112
13505992930,292cyclictest10521-21kworker/u16:3+efi_rts_wq22:55:132
13504992930,292cyclictest9638-21kworker/u16:3+efi_rts_wq22:25:121
13504992920,291cyclictest9638-21kworker/u16:3+efi_rts_wq20:05:131
13503992920,290cyclictest9638-21kworker/u16:3+efi_rts_wq22:30:110
13503992910,290cyclictest9638-21kworker/u16:3+efi_rts_wq20:09:260
13503992910,290cyclictest23784-21kworker/u16:3+efi_rts_wq23:40:120
13504992890,288cyclictest9638-21kworker/u16:3+efi_rts_wq20:45:131
13503992890,288cyclictest15829-21kworker/u16:0+efi_rts_wq22:45:120
13504992880,287cyclictest21297-21kworker/u16:2+efi_rts_wq23:15:111
13503992880,287cyclictest15829-21kworker/u16:0+efi_rts_wq20:35:120
13503992880,287cyclictest11543-21kworker/u16:0+efi_rts_wq00:00:120
13505992870,286cyclictest4783-21kworker/u16:1+efi_rts_wq00:01:072
13506992860,285cyclictest9638-21kworker/u16:3+efi_rts_wq19:30:133
13505992860,285cyclictest15829-21kworker/u16:0+efi_rts_wq19:55:122
13504992860,285cyclictest15829-21kworker/u16:0+efi_rts_wq21:30:111
13504992860,285cyclictest15829-21kworker/u16:0+efi_rts_wq19:44:201
13504992850,284cyclictest15829-21kworker/u16:0+efi_rts_wq22:04:491
13504992850,284cyclictest15829-21kworker/u16:0+efi_rts_wq21:15:131
13503992850,284cyclictest9638-21kworker/u16:3+efi_rts_wq21:45:120
13503992850,284cyclictest4783-21kworker/u16:1+efi_rts_wq00:30:120
13506992830,282cyclictest15829-21kworker/u16:0+efi_rts_wq20:30:133
13505992830,282cyclictest13312-21kworker/u16:1+efi_rts_wq23:00:122
13503992830,282cyclictest9638-21kworker/u16:3+efi_rts_wq19:24:160
13504992820,281cyclictest9638-21kworker/u16:3+efi_rts_wq21:55:131
13504992810,280cyclictest23784-21kworker/u16:3+efi_rts_wq23:40:121
13503992800,279cyclictest15829-21kworker/u16:0+efi_rts_wq21:09:370
13506992790,278cyclictest11543-21kworker/u16:0+efi_rts_wq00:20:123
13506992780,277cyclictest23784-21kworker/u16:3+efi_rts_wq23:30:073
13503992780,277cyclictest15829-21kworker/u16:0+efi_rts_wq20:55:130
13506992760,273cyclictest9638-21kworker/u16:3+efi_rts_wq20:45:133
13506992750,274cyclictest15829-21kworker/u16:0+efi_rts_wq20:40:123
13503992750,274cyclictest15829-21kworker/u16:0+efi_rts_wq19:25:130
13504992730,272cyclictest10521-21kworker/u16:3+efi_rts_wq22:55:131
13504992720,271cyclictest9638-21kworker/u16:3+efi_rts_wq20:14:271
13506992710,270cyclictest9638-21kworker/u16:3+efi_rts_wq21:00:133
13503992690,268cyclictest9638-21kworker/u16:3+efi_rts_wq21:24:400
13506992660,265cyclictest9638-21kworker/u16:3+efi_rts_wq22:15:113
13505992650,264cyclictest9638-21kworker/u16:3+efi_rts_wq19:15:122
13505992640,263cyclictest32580-21kworker/u16:2+efi_rts_wq23:50:112
13503992640,263cyclictest15829-21kworker/u16:0+efi_rts_wq21:50:120
13506992630,262cyclictest9638-21kworker/u16:3+efi_rts_wq20:25:123
13506992630,261cyclictest9638-21kworker/u16:3+efi_rts_wq22:40:113
13506992620,261cyclictest11543-21kworker/u16:0+efi_rts_wq00:26:133
13503992620,260cyclictest9638-21kworker/u16:3+efi_rts_wq22:40:110
13505992610,260cyclictest9638-21kworker/u16:3+efi_rts_wq22:05:132
13505992610,260cyclictest9638-21kworker/u16:3+efi_rts_wq19:45:122
13505992610,260cyclictest15916-21kworker/u16:0+efi_rts_wq23:10:112
13503992610,260cyclictest11543-21kworker/u16:0+efi_rts_wq00:10:130
13506992600,259cyclictest9638-21kworker/u16:3+efi_rts_wq21:34:423
13504992600,259cyclictest32580-21kworker/u16:2+efi_rts_wq23:35:131
13505992580,257cyclictest15829-21kworker/u16:0+efi_rts_wq20:55:132
13503992560,254cyclictest15916-21kworker/u16:0+efi_rts_wq23:10:110
13504992550,254cyclictest15829-21kworker/u16:0+efi_rts_wq20:15:131
13504992540,253cyclictest23784-21kworker/u16:3+efi_rts_wq23:45:121
13503992530,252cyclictest32580-21kworker/u16:2+efi_rts_wq23:55:130
13506992500,249cyclictest15829-21kworker/u16:0+efi_rts_wq22:24:533
13505992490,248cyclictest15829-21kworker/u16:0+efi_rts_wq22:50:112
13505992460,245cyclictest9638-21kworker/u16:3+efi_rts_wq21:20:112
13505992460,245cyclictest13312-21kworker/u16:1+efi_rts_wq23:25:132
13503992460,245cyclictest9638-21kworker/u16:3+efi_rts_wq19:39:190
13503992450,244cyclictest9638-21kworker/u16:3+efi_rts_wq21:10:120
13504992440,242cyclictest23784-21kworker/u16:3+efi_rts_wq23:30:111
13506992430,242cyclictest15829-21kworker/u16:0+efi_rts_wq20:04:253
13504992420,241cyclictest15829-21kworker/u16:0+efi_rts_wq19:25:131
13503992390,238cyclictest15829-21kworker/u16:0+efi_rts_wq22:00:120
13503992370,236cyclictest4783-21kworker/u16:1+efi_rts_wq00:15:130
13506992360,235cyclictest9638-21kworker/u16:3+efi_rts_wq21:45:123
13503992360,235cyclictest9638-21kworker/u16:3+efi_rts_wq22:09:500
13506992350,234cyclictest4783-21kworker/u16:1+efi_rts_wq00:15:133
13506992350,234cyclictest15829-21kworker/u16:0+efi_rts_wq22:10:123
13506992350,234cyclictest15829-21kworker/u16:0+efi_rts_wq21:35:123
13505992350,234cyclictest23784-21kworker/u16:3+efi_rts_wq23:30:122
13504992350,234cyclictest9638-21kworker/u16:3+efi_rts_wq20:50:111
13503992350,234cyclictest15829-21kworker/u16:0+efi_rts_wq22:20:130
13505992330,232cyclictest15829-21kworker/u16:0+efi_rts_wq21:35:122
13505992330,229cyclictest15829-21kworker/u16:0+efi_rts_wq22:20:132
13506992320,231cyclictest15829-21kworker/u16:0+efi_rts_wq22:00:123
13503992310,230cyclictest9638-21kworker/u16:3+efi_rts_wq20:00:120
13506992270,226cyclictest15829-21kworker/u16:0+efi_rts_wq21:25:103
13505992240,223cyclictest15829-21kworker/u16:0+efi_rts_wq19:40:132
13503992240,223cyclictest13312-21kworker/u16:1+efi_rts_wq23:00:120
13504992230,222cyclictest9638-21kworker/u16:3+efi_rts_wq21:49:451
13504992210,220cyclictest9638-21kworker/u16:3+efi_rts_wq22:35:111
13503992190,218cyclictest15829-21kworker/u16:0+efi_rts_wq19:54:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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