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2026-09-18 - 09:24

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 Sep 18, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
112622317309,5sleep20-21swapper/219:09:202
112112316310,4sleep10-21swapper/119:08:391
94812314307,5sleep30-21swapper/319:05:093
109922314307,5sleep00-21swapper/019:05:500
11581993040,303cyclictest14281-21kworker/u16:2+efi_rts_wq22:25:111
11582993030,302cyclictest8467-21kworker/u16:3+efi_rts_wq20:45:142
11580993030,302cyclictest25381-21kworker/u16:3+efi_rts_wq23:55:120
11583993020,300cyclictest8468-21kworker/u16:1+efi_rts_wq00:30:113
11582993020,301cyclictest25381-21kworker/u16:3+efi_rts_wq23:55:332
11582993020,300cyclictest14281-21kworker/u16:2+efi_rts_wq22:50:132
11580993020,301cyclictest8467-21kworker/u16:3+efi_rts_wq21:30:120
11582993000,299cyclictest20083-21kworker/u16:0+efi_rts_wq19:10:112
11582993000,297cyclictest25381-21kworker/u16:3+efi_rts_wq23:30:132
11581993000,299cyclictest20083-21kworker/u16:0+efi_rts_wq20:20:111
11580992980,297cyclictest14281-21kworker/u16:2+efi_rts_wq23:25:260
11583992970,296cyclictest14281-21kworker/u16:2+efi_rts_wq23:10:123
11582992970,296cyclictest8468-21kworker/u16:1+efi_rts_wq23:15:122
11582992960,295cyclictest8467-21kworker/u16:3+efi_rts_wq19:15:132
11581992960,295cyclictest20083-21kworker/u16:0+efi_rts_wq21:15:121
11583992950,294cyclictest14281-21kworker/u16:2+efi_rts_wq22:05:113
11580992950,294cyclictest8468-21kworker/u16:1+efi_rts_wq23:10:230
11582992940,293cyclictest20083-21kworker/u16:0+efi_rts_wq19:34:442
11583992930,290cyclictest23355-21kworker/u16:1+efi_rts_wq22:10:123
11580992930,292cyclictest25381-21kworker/u16:3+efi_rts_wq00:15:130
11583992920,291cyclictest8467-21kworker/u16:3+efi_rts_wq21:20:123
11582992920,291cyclictest8467-21kworker/u16:3+efi_rts_wq20:00:122
11581992920,290cyclictest14281-21kworker/u16:2+efi_rts_wq22:30:161
11583992910,290cyclictest8467-21kworker/u16:3+efi_rts_wq20:00:123
11582992910,290cyclictest8468-21kworker/u16:1+efi_rts_wq23:25:132
11582992910,289cyclictest23355-21kworker/u16:1+efi_rts_wq21:45:122
11581992910,290cyclictest8468-21kworker/u16:1+efi_rts_wq23:50:141
11580992910,290cyclictest8467-21kworker/u16:3+efi_rts_wq20:19:520
11582992900,289cyclictest20083-21kworker/u16:0+efi_rts_wq20:05:142
11582992890,288cyclictest8468-21kworker/u16:1+efi_rts_wq00:20:132
11580992890,287cyclictest8467-21kworker/u16:3+efi_rts_wq19:50:110
11582992880,287cyclictest20083-21kworker/u16:0+efi_rts_wq21:25:112
11580992880,287cyclictest8467-21kworker/u16:3+efi_rts_wq19:15:000
11580992870,286cyclictest8468-21kworker/u16:1+efi_rts_wq23:30:130
11582992860,285cyclictest23355-21kworker/u16:1+efi_rts_wq21:40:142
11581992860,285cyclictest8468-21kworker/u16:1+efi_rts_wq00:00:131
11581992860,285cyclictest8467-21kworker/u16:3+efi_rts_wq19:54:471
11580992840,283cyclictest8468-21kworker/u16:1+efi_rts_wq00:20:150
11582992800,279cyclictest20083-21kworker/u16:0+efi_rts_wq20:24:532
11581992800,278cyclictest14281-21kworker/u16:2+efi_rts_wq22:45:141
11580992800,279cyclictest8468-21kworker/u16:1+efi_rts_wq23:20:120
11582992790,278cyclictest25381-21kworker/u16:3+efi_rts_wq00:35:132
11581992790,278cyclictest8468-21kworker/u16:1+efi_rts_wq23:20:251
11583992780,277cyclictest8467-21kworker/u16:3+efi_rts_wq19:40:123
11582992780,277cyclictest23355-21kworker/u16:1+efi_rts_wq22:35:162
11581992780,277cyclictest20083-21kworker/u16:0+efi_rts_wq19:55:131
11581992780,276cyclictest14281-21kworker/u16:2+efi_rts_wq23:00:221
11581992770,276cyclictest20083-21kworker/u16:0+efi_rts_wq21:05:121
11580992750,274cyclictest14281-21kworker/u16:2+efi_rts_wq22:15:140
11580992750,274cyclictest14281-21kworker/u16:2+efi_rts_wq22:15:130
11583992740,273cyclictest8468-21kworker/u16:1+efi_rts_wq23:20:123
11581992740,273cyclictest8468-21kworker/u16:1+efi_rts_wq23:25:131
11583992730,272cyclictest25381-21kworker/u16:3+efi_rts_wq23:55:143
11583992730,272cyclictest25381-21kworker/u16:3+efi_rts_wq23:35:123
11582992720,271cyclictest8468-21kworker/u16:1+efi_rts_wq23:35:292
11580992720,271cyclictest8467-21kworker/u16:3+efi_rts_wq19:30:110
11583992710,270cyclictest14281-21kworker/u16:2+efi_rts_wq22:55:143
11583992690,268cyclictest25381-21kworker/u16:3+efi_rts_wq23:50:313
11583992690,268cyclictest25381-21kworker/u16:3+efi_rts_wq00:35:133
11582992690,268cyclictest8468-21kworker/u16:1+efi_rts_wq00:05:142
11580992690,268cyclictest20083-21kworker/u16:0+efi_rts_wq20:40:140
11581992680,267cyclictest8467-21kworker/u16:3+efi_rts_wq21:30:121
11580992670,266cyclictest8467-21kworker/u16:3+efi_rts_wq20:55:110
11582992660,265cyclictest25381-21kworker/u16:3+efi_rts_wq00:10:162
11580992650,264cyclictest8467-21kworker/u16:3+efi_rts_wq20:34:560
11580992630,262cyclictest25381-21kworker/u16:3+efi_rts_wq23:45:120
11582992610,260cyclictest23355-21kworker/u16:1+efi_rts_wq21:50:082
11582992600,259cyclictest8468-21kworker/u16:1+efi_rts_wq23:50:142
11581992590,258cyclictest8467-21kworker/u16:3+efi_rts_wq20:15:121
11583992580,257cyclictest20083-21kworker/u16:0+efi_rts_wq20:40:133
11580992580,256cyclictest25381-21kworker/u16:3+efi_rts_wq23:40:140
11581992560,255cyclictest8468-21kworker/u16:1+efi_rts_wq00:20:381
11583992550,254cyclictest23355-21kworker/u16:1+efi_rts_wq21:45:133
11580992550,254cyclictest14281-21kworker/u16:2+efi_rts_wq22:25:110
11582992530,252cyclictest8467-21kworker/u16:3+efi_rts_wq20:15:142
11581992520,251cyclictest8467-21kworker/u16:3+efi_rts_wq21:00:131
11583992510,250cyclictest2792-21kworker/u16:4+efi_rts_wq22:40:143
11582992500,249cyclictest23355-21kworker/u16:1+efi_rts_wq22:05:122
11581992500,249cyclictest8467-21kworker/u16:3+efi_rts_wq20:25:121
11583992480,247cyclictest25381-21kworker/u16:3+efi_rts_wq00:25:143
11582992480,247cyclictest8467-21kworker/u16:3+efi_rts_wq21:00:002
11583992470,246cyclictest8468-21kworker/u16:1+efi_rts_wq00:00:333
11583992440,243cyclictest8467-21kworker/u16:3+efi_rts_wq19:25:143
11582992440,243cyclictest23355-21kworker/u16:1+efi_rts_wq22:20:122
11581992420,241cyclictest25381-21kworker/u16:3+efi_rts_wq00:25:131
11580992420,241cyclictest20083-21kworker/u16:0+efi_rts_wq20:14:520
11582992410,239cyclictest8468-21kworker/u16:1+efi_rts_wq23:05:122
11580992400,238cyclictest8467-21kworker/u16:3+efi_rts_wq20:35:130
11583992380,237cyclictest20083-21kworker/u16:0+efi_rts_wq19:35:133
11582992380,237cyclictest14281-21kworker/u16:2+efi_rts_wq23:10:122
11581992380,237cyclictest20083-21kworker/u16:0+efi_rts_wq20:30:121
11580992380,237cyclictest8468-21kworker/u16:1+efi_rts_wq00:00:140
11580992360,233cyclictest20083-21kworker/u16:0+efi_rts_wq19:55:120
11583992350,234cyclictest23355-21kworker/u16:1+efi_rts_wq21:55:133
11582992320,231cyclictest20083-21kworker/u16:0+efi_rts_wq20:50:122
11581992320,231cyclictest20083-21kworker/u16:0+efi_rts_wq19:10:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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