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2025-11-26 - 09:10

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 50 highest latencies:
System rackcslot3s.osadl.org (updated Wed Nov 26, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
297872317310,5sleep20-21swapper/219:07:302
297682317311,4sleep30-21swapper/319:07:143
296352317303,5sleep10-21swapper/119:05:331
298382314306,5sleep00-21swapper/019:08:080
30252993000,298cyclictest2388-21kworker/u16:3+efi_rts_wq23:30:133
30252993000,298cyclictest19603-21kworker/u16:1+efi_rts_wq00:30:113
30252992990,298cyclictest23513-21kworker/u16:1+efi_rts_wq22:29:593
30251992990,298cyclictest24590-21kworker/u16:2+efi_rts_wq23:05:052
30252992980,297cyclictest21187-21kworker/u16:3+efi_rts_wq22:40:023
30251992980,297cyclictest29130-21kworker/u16:2+efi_rts_wq20:29:392
30252992960,295cyclictest29130-21kworker/u16:2+efi_rts_wq19:35:143
30252992940,292cyclictest19798-21kworker/u16:0+efi_rts_wq20:55:133
30250992940,293cyclictest21187-21kworker/u16:3+efi_rts_wq21:29:501
30250992930,292cyclictest2388-21kworker/u16:3+efi_rts_wq23:20:151
30249992930,292cyclictest29130-21kworker/u16:2+efi_rts_wq20:00:130
30250992920,291cyclictest21939-21kworker/u16:0+efi_rts_wq00:00:181
30249992920,291cyclictest29130-21kworker/u16:2+efi_rts_wq20:24:370
30250992910,289cyclictest24590-21kworker/u16:2+efi_rts_wq22:45:111
30249992910,290cyclictest29130-21kworker/u16:2+efi_rts_wq21:00:140
30251992900,289cyclictest29130-21kworker/u16:2+efi_rts_wq19:49:322
30251992900,289cyclictest29130-21kworker/u16:2+efi_rts_wq19:30:132
30251992900,289cyclictest19798-21kworker/u16:0+efi_rts_wq20:40:122
30250992890,287cyclictest29130-21kworker/u16:2+efi_rts_wq21:00:131
30252992870,286cyclictest29130-21kworker/u16:2+efi_rts_wq20:50:133
30250992870,286cyclictest29130-21kworker/u16:2+efi_rts_wq21:10:131
30252992860,285cyclictest21187-21kworker/u16:3+efi_rts_wq22:35:133
30251992850,284cyclictest21187-21kworker/u16:3+efi_rts_wq22:00:132
30251992850,284cyclictest19798-21kworker/u16:0+efi_rts_wq20:09:352
30250992850,284cyclictest29130-21kworker/u16:2+efi_rts_wq20:25:141
30252992840,283cyclictest24590-21kworker/u16:2+efi_rts_wq22:55:123
30251992830,282cyclictest2388-21kworker/u16:3+efi_rts_wq23:30:132
30251992830,282cyclictest19798-21kworker/u16:0+efi_rts_wq21:05:122
30250992830,282cyclictest23513-21kworker/u16:1+efi_rts_wq21:55:121
30249992820,281cyclictest19603-21kworker/u16:1+efi_rts_wq23:55:140
30252992800,279cyclictest21939-21kworker/u16:0+efi_rts_wq23:50:123
30249992790,278cyclictest21187-21kworker/u16:3+efi_rts_wq22:04:560
30252992760,275cyclictest23513-21kworker/u16:1+efi_rts_wq21:30:153
30252992760,275cyclictest23513-21kworker/u16:1+efi_rts_wq21:30:143
30251992760,275cyclictest23513-21kworker/u16:1+efi_rts_wq21:30:152
30251992760,275cyclictest23513-21kworker/u16:1+efi_rts_wq21:30:142
30252992750,274cyclictest23513-21kworker/u16:1+efi_rts_wq22:20:143
30251992750,274cyclictest27079-21kworker/u16:0+efi_rts_wq23:00:142
30251992750,273cyclictest21939-21kworker/u16:0+efi_rts_wq00:15:122
30250992750,274cyclictest23513-21kworker/u16:1+efi_rts_wq21:35:161
30252992720,271cyclictest2388-21kworker/u16:3+efi_rts_wq23:25:133
30251992720,271cyclictest21187-21kworker/u16:3+efi_rts_wq22:25:002
30251992720,271cyclictest19798-21kworker/u16:0+efi_rts_wq19:15:112
30250992720,271cyclictest19603-21kworker/u16:1+efi_rts_wq00:20:141
30249992720,271cyclictest21187-21kworker/u16:3+efi_rts_wq22:10:160
30249992720,270cyclictest21939-21kworker/u16:0+efi_rts_wq00:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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