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2025-05-02 - 12:14

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 Fri May 02, 2025 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16042321299,5sleep30-21swapper/319:08:433
15702316303,4sleep10-21swapper/119:08:161
14942316309,5sleep20-21swapper/219:07:172
15022315308,4sleep00-21swapper/019:07:230
1968993110,310cyclictest22734-21kworker/u16:2+efi_rts_wq23:55:131
1970993090,308cyclictest17505-21kworker/u16:0+efi_rts_wq19:30:143
1968993080,307cyclictest13486-21kworker/u16:2+efi_rts_wq22:30:141
1968993080,307cyclictest1029-21kworker/u16:3+efi_rts_wq23:40:131
1968993080,306cyclictest17505-21kworker/u16:0+efi_rts_wq21:00:181
1968993070,306cyclictest17505-21kworker/u16:0+efi_rts_wq19:35:121
1967993070,306cyclictest3594-21kworker/u16:2+efi_rts_wq23:10:130
1970993060,303cyclictest17505-21kworker/u16:0+efi_rts_wq21:40:153
1968993060,305cyclictest22734-21kworker/u16:2+efi_rts_wq00:20:151
1968993060,305cyclictest17505-21kworker/u16:0+efi_rts_wq21:10:171
1967993060,305cyclictest17972-21kworker/u16:1+efi_rts_wq00:00:130
1969993050,304cyclictest22734-21kworker/u16:2+efi_rts_wq23:45:162
1969993050,304cyclictest17505-21kworker/u16:0+efi_rts_wq21:35:162
1970993040,303cyclictest17505-21kworker/u16:0+efi_rts_wq20:20:163
1968993030,302cyclictest13486-21kworker/u16:2+efi_rts_wq21:15:131
1967993030,301cyclictest13486-21kworker/u16:2+efi_rts_wq19:25:130
1969993020,301cyclictest17972-21kworker/u16:1+efi_rts_wq00:00:132
1969993020,301cyclictest17505-21kworker/u16:0+efi_rts_wq20:55:182
1969993020,301cyclictest13486-21kworker/u16:2+efi_rts_wq20:15:162
1969993000,299cyclictest1029-21kworker/u16:3+efi_rts_wq23:00:152
1968992990,298cyclictest1029-21kworker/u16:3+efi_rts_wq23:35:141
1970992980,297cyclictest13486-21kworker/u16:2+efi_rts_wq22:10:123
1967992980,297cyclictest17505-21kworker/u16:0+efi_rts_wq21:10:170
1967992960,295cyclictest17505-21kworker/u16:0+efi_rts_wq22:50:150
1969992950,294cyclictest13486-21kworker/u16:2+efi_rts_wq21:30:182
1968992930,292cyclictest13486-21kworker/u16:2+efi_rts_wq20:30:131
1968992930,292cyclictest13486-21kworker/u16:2+efi_rts_wq19:10:151
1968992920,291cyclictest13486-21kworker/u16:2+efi_rts_wq21:20:191
1967992890,288cyclictest17505-21kworker/u16:0+efi_rts_wq20:25:160
1970992880,287cyclictest13486-21kworker/u16:2+efi_rts_wq21:20:183
1969992870,283cyclictest17505-21kworker/u16:0+efi_rts_wq21:40:162
1968992870,286cyclictest17505-21kworker/u16:0+efi_rts_wq20:40:191
1970992860,285cyclictest17505-21kworker/u16:0+efi_rts_wq21:50:143
1968992860,285cyclictest17505-21kworker/u16:0+efi_rts_wq21:45:151
1969992850,283cyclictest22734-21kworker/u16:2+efi_rts_wq00:05:142
1967992830,282cyclictest13486-21kworker/u16:2+efi_rts_wq22:20:140
1969992810,280cyclictest3594-21kworker/u16:2+efi_rts_wq23:20:142
1969992810,280cyclictest13486-21kworker/u16:2+efi_rts_wq21:05:142
1970992800,279cyclictest17505-21kworker/u16:0+efi_rts_wq22:00:143
1968992770,276cyclictest17505-21kworker/u16:0+efi_rts_wq19:50:141
1970992730,272cyclictest22734-21kworker/u16:2+efi_rts_wq00:35:143
1970992730,272cyclictest17505-21kworker/u16:0+efi_rts_wq21:25:173
1969992730,272cyclictest21662-21kworker/u16:1+efi_rts_wq22:40:132
1970992710,270cyclictest17505-21kworker/u16:0+efi_rts_wq19:40:213
1967992710,270cyclictest13486-21kworker/u16:2+efi_rts_wq19:45:180
1969992690,268cyclictest22734-21kworker/u16:2+efi_rts_wq00:30:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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