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2026-06-02 - 06:10

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 100 highest latencies:
System rackcslot3s.osadl.org (updated Tue Jun 02, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271672318303,5sleep30-21swapper/319:09:333
269802317304,4sleep20-21swapper/219:07:122
268502317302,5sleep00-21swapper/019:05:310
269282313307,4sleep10-21swapper/119:06:321
27465993000,299cyclictest19142-21kworker/u16:1+efi_rts_wq19:44:380
27465992980,297cyclictest2818-21kworker/u16:1+efi_rts_wq00:20:130
27467992970,296cyclictest11886-21kworker/u16:1+efi_rts_wq21:30:112
27465992970,296cyclictest2818-21kworker/u16:1+efi_rts_wq23:40:120
27465992970,296cyclictest27196-21kworker/u16:0+efi_rts_wq19:30:120
27465992970,296cyclictest2183-21kworker/u16:3+efi_rts_wq19:55:130
27468992960,295cyclictest27196-21kworker/u16:0+efi_rts_wq19:45:143
27468992960,294cyclictest19076-21kworker/u16:3+efi_rts_wq22:40:123
27466992940,293cyclictest2183-21kworker/u16:3+efi_rts_wq20:40:151
27466992940,293cyclictest11886-21kworker/u16:1+efi_rts_wq21:35:131
27465992940,293cyclictest2183-21kworker/u16:3+efi_rts_wq19:54:410
27465992940,293cyclictest16484-21kworker/u16:2+efi_rts_wq20:49:490
27466992930,292cyclictest11886-21kworker/u16:1+efi_rts_wq21:30:111
27468992920,291cyclictest19076-21kworker/u16:3+efi_rts_wq22:50:133
27465992920,290cyclictest2183-21kworker/u16:3+efi_rts_wq20:55:160
27468992910,290cyclictest19142-21kworker/u16:1+efi_rts_wq19:34:373
27466992910,289cyclictest9302-21kworker/u16:2+efi_rts_wq23:55:141
27468992900,289cyclictest2183-21kworker/u16:3+efi_rts_wq20:00:123
27466992900,289cyclictest20566-21kworker/u16:4+efi_rts_wq00:05:231
27465992900,289cyclictest2183-21kworker/u16:3+efi_rts_wq20:34:480
27467992890,288cyclictest2818-21kworker/u16:1+efi_rts_wq22:25:142
27467992890,288cyclictest2818-21kworker/u16:1+efi_rts_wq22:05:122
27466992890,288cyclictest2818-21kworker/u16:1+efi_rts_wq00:35:291
27466992890,288cyclictest19076-21kworker/u16:3+efi_rts_wq23:00:121
27468992880,287cyclictest9302-21kworker/u16:2+efi_rts_wq23:45:143
27465992880,287cyclictest11886-21kworker/u16:1+efi_rts_wq21:20:120
27468992870,286cyclictest11886-21kworker/u16:1+efi_rts_wq21:40:133
27465992860,285cyclictest19142-21kworker/u16:1+efi_rts_wq19:35:140
27465992860,285cyclictest16484-21kworker/u16:2+efi_rts_wq21:00:130
27468992840,283cyclictest6988-21kworker/u16:0+efi_rts_wq23:25:133
27468992840,283cyclictest2183-21kworker/u16:3+efi_rts_wq20:59:523
27467992830,282cyclictest1436-21kworker/u16:0+efi_rts_wq00:30:132
27466992830,282cyclictest2183-21kworker/u16:3+efi_rts_wq20:05:121
27468992820,281cyclictest30530-21kworker/u16:4+efi_rts_wq21:50:133
27468992820,280cyclictest9302-21kworker/u16:2+efi_rts_wq00:00:123
27465992820,281cyclictest2818-21kworker/u16:1+efi_rts_wq23:55:210
27465992810,278cyclictest9302-21kworker/u16:2+efi_rts_wq00:15:140
27465992810,278cyclictest9302-21kworker/u16:2+efi_rts_wq00:15:130
27467992800,279cyclictest19076-21kworker/u16:3+efi_rts_wq23:00:122
27466992790,278cyclictest2818-21kworker/u16:1+efi_rts_wq22:25:141
27466992780,277cyclictest29352-21kworker/u16:4+efi_rts_wq23:15:131
27466992770,276cyclictest2183-21kworker/u16:3+efi_rts_wq20:30:131
27466992750,274cyclictest16484-21kworker/u16:2+efi_rts_wq20:54:511
27467992740,273cyclictest19142-21kworker/u16:1+efi_rts_wq19:15:012
27468992730,271cyclictest24320-21kworker/u16:0+efi_rts_wq22:30:133
27466992730,272cyclictest2183-21kworker/u16:3+efi_rts_wq19:55:131
27468992710,270cyclictest19142-21kworker/u16:1+efi_rts_wq19:20:123
27468992710,270cyclictest16484-21kworker/u16:2+efi_rts_wq19:59:423
27465992710,270cyclictest20566-21kworker/u16:4+efi_rts_wq00:05:120
27468992700,266cyclictest2818-21kworker/u16:1+efi_rts_wq22:35:143
27468992690,267cyclictest2818-21kworker/u16:1+efi_rts_wq22:55:133
27466992670,266cyclictest16484-21kworker/u16:2+efi_rts_wq20:25:101
27468992640,263cyclictest2818-21kworker/u16:1+efi_rts_wq23:55:133
27468992640,263cyclictest11886-21kworker/u16:1+efi_rts_wq21:35:123
27465992640,263cyclictest24320-21kworker/u16:0+efi_rts_wq21:39:590
27465992630,262cyclictest20183-21kworker/u16:3+efi_rts_wq22:00:120
27468992620,261cyclictest2818-21kworker/u16:1+efi_rts_wq23:40:123
27465992620,261cyclictest27196-21kworker/u16:0+efi_rts_wq19:45:140
27465992620,261cyclictest19076-21kworker/u16:3+efi_rts_wq22:50:110
27465992610,260cyclictest19076-21kworker/u16:3+efi_rts_wq23:05:130
27465992600,259cyclictest27196-21kworker/u16:0+efi_rts_wq19:15:120
27468992590,258cyclictest2183-21kworker/u16:3+efi_rts_wq20:20:123
27467992580,257cyclictest19076-21kworker/u16:3+efi_rts_wq22:50:122
27467992580,257cyclictest16484-21kworker/u16:2+efi_rts_wq21:00:132
27465992580,255cyclictest2183-21kworker/u16:3+efi_rts_wq20:00:130
27466992570,256cyclictest24320-21kworker/u16:0+efi_rts_wq21:55:021
27465992570,256cyclictest27196-21kworker/u16:0+efi_rts_wq19:25:120
27468992560,255cyclictest2183-21kworker/u16:3+efi_rts_wq20:45:143
27467992550,254cyclictest2183-21kworker/u16:3+efi_rts_wq21:05:142
27468992540,253cyclictest24320-21kworker/u16:0+efi_rts_wq21:45:143
27466992520,251cyclictest2818-21kworker/u16:1+efi_rts_wq23:10:141
27468992510,250cyclictest19076-21kworker/u16:3+efi_rts_wq23:05:143
27467992510,250cyclictest6988-21kworker/u16:0+efi_rts_wq23:25:132
27468992490,248cyclictest2818-21kworker/u16:1+efi_rts_wq22:20:133
27465992470,246cyclictest2183-21kworker/u16:3+efi_rts_wq20:10:130
27466992460,245cyclictest2818-21kworker/u16:1+efi_rts_wq00:25:131
27468992450,244cyclictest2818-21kworker/u16:1+efi_rts_wq22:25:143
27467992450,244cyclictest2183-21kworker/u16:3+efi_rts_wq20:45:132
27467992450,244cyclictest16484-21kworker/u16:2+efi_rts_wq21:14:552
27466992450,244cyclictest6988-21kworker/u16:0+efi_rts_wq23:25:131
27465992450,244cyclictest27196-21kworker/u16:0+efi_rts_wq19:10:120
27465992430,242cyclictest24320-21kworker/u16:0+efi_rts_wq22:05:030
27466992410,240cyclictest9302-21kworker/u16:2+efi_rts_wq23:35:131
27465992380,237cyclictest2818-21kworker/u16:1+efi_rts_wq00:35:120
27468992360,235cyclictest2818-21kworker/u16:1+efi_rts_wq23:10:143
27467992360,235cyclictest2818-21kworker/u16:1+efi_rts_wq23:20:122
27468992350,233cyclictest29352-21kworker/u16:4+efi_rts_wq23:15:143
27466992340,233cyclictest2818-21kworker/u16:1+efi_rts_wq23:50:211
27465992340,232cyclictest2818-21kworker/u16:1+efi_rts_wq23:10:150
27465992310,230cyclictest2183-21kworker/u16:3+efi_rts_wq20:50:120
27468992300,229cyclictest2183-21kworker/u16:3+efi_rts_wq20:05:123
27466992270,225cyclictest9302-21kworker/u16:2+efi_rts_wq00:00:131
27466992260,225cyclictest2818-21kworker/u16:1+efi_rts_wq23:40:191
27466992260,225cyclictest2183-21kworker/u16:3+efi_rts_wq20:55:151
27465992260,225cyclictest2818-21kworker/u16:1+efi_rts_wq22:15:140
27468992250,224cyclictest19142-21kworker/u16:1+efi_rts_wq19:50:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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