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2025-11-22 - 10:46

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 Nov 22, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303452325319,4sleep00-21swapper/019:06:070
303112316309,4sleep30-21swapper/319:05:413
305282315307,5sleep10-21swapper/119:08:281
288122315308,5sleep20-21swapper/219:05:092
30915992990,298cyclictest18892-21kworker/u16:0+efi_rts_wq00:16:173
30913992990,298cyclictest25249-21kworker/u16:3+efi_rts_wq22:25:121
30913992980,297cyclictest5313-21kworker/u16:2+efi_rts_wq23:45:141
30915992950,293cyclictest2812-21kworker/u16:1+efi_rts_wq22:55:123
30915992940,293cyclictest2812-21kworker/u16:1+efi_rts_wq21:29:543
30915992940,293cyclictest25249-21kworker/u16:3+efi_rts_wq23:35:123
30915992930,292cyclictest2812-21kworker/u16:1+efi_rts_wq21:20:133
30914992930,290cyclictest18892-21kworker/u16:0+efi_rts_wq00:20:122
30913992920,291cyclictest2812-21kworker/u16:1+efi_rts_wq20:25:131
30915992910,290cyclictest7127-21kworker/u16:3+efi_rts_wq20:30:123
30915992910,290cyclictest7127-21kworker/u16:3+efi_rts_wq20:15:123
30915992910,290cyclictest7127-21kworker/u16:3+efi_rts_wq20:10:113
30912992910,290cyclictest25877-21kworker/u16:2+efi_rts_wq19:45:120
30912992900,289cyclictest2812-21kworker/u16:1+efi_rts_wq21:24:520
30912992890,288cyclictest25249-21kworker/u16:3+efi_rts_wq22:50:070
30913992880,287cyclictest25249-21kworker/u16:3+efi_rts_wq22:35:141
30915992850,283cyclictest2812-21kworker/u16:1+efi_rts_wq21:45:123
30913992840,283cyclictest7127-21kworker/u16:3+efi_rts_wq20:00:151
30915992830,282cyclictest7127-21kworker/u16:3+efi_rts_wq20:20:153
30914992830,282cyclictest18892-21kworker/u16:0+efi_rts_wq00:10:122
30912992830,282cyclictest25249-21kworker/u16:3+efi_rts_wq23:05:130
30914992820,281cyclictest14226-21kworker/u16:0+efi_rts_wq19:15:152
30915992810,280cyclictest25877-21kworker/u16:2+efi_rts_wq19:40:173
30915992810,279cyclictest2812-21kworker/u16:1+efi_rts_wq22:40:143
30913992810,280cyclictest25877-21kworker/u16:2+efi_rts_wq19:20:151
30912992810,280cyclictest2812-21kworker/u16:1+efi_rts_wq19:55:120
30913992800,279cyclictest25877-21kworker/u16:2+efi_rts_wq19:50:131
30913992770,276cyclictest2812-21kworker/u16:1+efi_rts_wq19:35:121
30913992770,276cyclictest25249-21kworker/u16:3+efi_rts_wq22:15:121
30913992770,276cyclictest25249-21kworker/u16:3+efi_rts_wq22:10:121
30912992760,275cyclictest5313-21kworker/u16:2+efi_rts_wq00:15:150
30914992740,273cyclictest25877-21kworker/u16:2+efi_rts_wq19:45:132
30914992740,273cyclictest25249-21kworker/u16:3+efi_rts_wq23:20:122
30913992740,272cyclictest2812-21kworker/u16:1+efi_rts_wq22:50:151
30915992730,272cyclictest5313-21kworker/u16:2+efi_rts_wq23:50:123
30915992730,271cyclictest25249-21kworker/u16:3+efi_rts_wq22:10:123
30915992720,271cyclictest25249-21kworker/u16:3+efi_rts_wq23:40:163
30915992710,270cyclictest5313-21kworker/u16:2+efi_rts_wq23:25:153
30915992710,269cyclictest25249-21kworker/u16:3+efi_rts_wq23:05:103
30914992700,269cyclictest25249-21kworker/u16:3+efi_rts_wq23:05:122
30913992680,267cyclictest2812-21kworker/u16:1+efi_rts_wq20:50:111
30915992670,266cyclictest25249-21kworker/u16:3+efi_rts_wq22:05:133
30915992660,265cyclictest5313-21kworker/u16:2+efi_rts_wq00:06:153
30912992660,265cyclictest18892-21kworker/u16:0+efi_rts_wq00:00:130
30915992640,263cyclictest25877-21kworker/u16:2+efi_rts_wq20:05:133
30915992640,259cyclictest25877-21kworker/u16:2+efi_rts_wq19:20:143
30913992630,262cyclictest25249-21kworker/u16:3+efi_rts_wq22:05:121
30913992620,261cyclictest2812-21kworker/u16:1+efi_rts_wq23:10:171
30912992620,261cyclictest2812-21kworker/u16:1+efi_rts_wq21:34:540
30912992610,260cyclictest2812-21kworker/u16:1+efi_rts_wq21:19:510
30914992600,259cyclictest5313-21kworker/u16:2+efi_rts_wq23:25:152
30914992600,259cyclictest18892-21kworker/u16:0+efi_rts_wq00:25:122
30914992590,258cyclictest25877-21kworker/u16:2+efi_rts_wq19:34:322
30914992570,256cyclictest2812-21kworker/u16:1+efi_rts_wq21:05:132
30913992570,256cyclictest5313-21kworker/u16:2+efi_rts_wq23:55:111
30913992570,256cyclictest25877-21kworker/u16:2+efi_rts_wq19:15:021
30914992560,255cyclictest2812-21kworker/u16:1+efi_rts_wq20:35:162
30914992560,255cyclictest25877-21kworker/u16:2+efi_rts_wq19:54:352
30914992540,253cyclictest2812-21kworker/u16:1+efi_rts_wq19:25:152
30913992540,253cyclictest14226-21kworker/u16:0+efi_rts_wq19:10:111
30914992520,251cyclictest25249-21kworker/u16:3+efi_rts_wq23:10:172
30914992480,247cyclictest2812-21kworker/u16:1+efi_rts_wq21:39:562
30912992480,247cyclictest5313-21kworker/u16:2+efi_rts_wq23:15:130
30915992470,246cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:123
30915992470,246cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:113
30914992470,245cyclictest25249-21kworker/u16:3+efi_rts_wq22:45:062
30913992470,246cyclictest5313-21kworker/u16:2+efi_rts_wq00:35:141
30913992450,244cyclictest5313-21kworker/u16:2+efi_rts_wq00:15:151
30913992450,244cyclictest18892-21kworker/u16:0+efi_rts_wq00:30:131
30912992450,244cyclictest7127-21kworker/u16:3+efi_rts_wq21:00:130
30912992440,243cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:120
30912992440,243cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:110
30914992420,241cyclictest2812-21kworker/u16:1+efi_rts_wq20:45:152
30913992400,239cyclictest5313-21kworker/u16:2+efi_rts_wq23:30:141
30913992400,239cyclictest25249-21kworker/u16:3+efi_rts_wq23:20:131
30915992380,236cyclictest2812-21kworker/u16:1+efi_rts_wq22:45:153
30914992380,237cyclictest5313-21kworker/u16:2+efi_rts_wq00:05:132
30913992380,237cyclictest2812-21kworker/u16:1+efi_rts_wq20:40:101
30912992380,237cyclictest7127-21kworker/u16:3+efi_rts_wq20:00:150
30915992370,236cyclictest25877-21kworker/u16:2+efi_rts_wq19:49:343
30912992370,236cyclictest25249-21kworker/u16:3+efi_rts_wq21:54:570
30913992360,235cyclictest7127-21kworker/u16:3+efi_rts_wq21:00:131
30914992350,234cyclictest14226-21kworker/u16:0+efi_rts_wq19:10:112
30912992350,234cyclictest18892-21kworker/u16:0+efi_rts_wq00:30:130
30915992320,231cyclictest2812-21kworker/u16:1+efi_rts_wq22:50:163
30914992310,230cyclictest25249-21kworker/u16:3+efi_rts_wq21:55:162
30914992300,229cyclictest2812-21kworker/u16:1+efi_rts_wq21:45:122
30913992300,229cyclictest18892-21kworker/u16:0+efi_rts_wq00:25:121
30913992280,227cyclictest2812-21kworker/u16:1+efi_rts_wq19:29:321
30913992280,227cyclictest25249-21kworker/u16:3+efi_rts_wq23:00:141
30914992270,226cyclictest2812-21kworker/u16:1+efi_rts_wq21:30:142
30914992260,225cyclictest25249-21kworker/u16:3+efi_rts_wq21:50:132
30913992260,225cyclictest25249-21kworker/u16:3+efi_rts_wq22:30:121
30912992260,225cyclictest4328-21kworker/u16:0+efi_rts_wq21:10:130
30912992250,224cyclictest25249-21kworker/u16:3+efi_rts_wq21:59:570
30912992240,223cyclictest7127-21kworker/u16:3+efi_rts_wq20:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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