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2026-03-15 - 05:29

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 Sun Mar 15, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73532325318,4sleep30-21swapper/319:09:593
72442320306,5sleep00-21swapper/019:08:350
70992317310,4sleep10-21swapper/119:06:441
71992316308,5sleep20-21swapper/219:08:012
7620993150,314cyclictest11441-21kworker/u16:3+efi_rts_wq00:35:121
7620993150,314cyclictest11441-21kworker/u16:3+efi_rts_wq00:35:121
7620993140,313cyclictest19147-21kworker/u16:1+efi_rts_wq20:00:121
7620993130,312cyclictest28759-21kworker/u16:0+efi_rts_wq21:20:101
7622993100,309cyclictest19147-21kworker/u16:1+efi_rts_wq22:30:123
7619993100,309cyclictest19147-21kworker/u16:1+efi_rts_wq22:55:100
7622993080,307cyclictest19147-21kworker/u16:1+efi_rts_wq21:30:053
7621993070,306cyclictest14474-21kworker/u16:0+efi_rts_wq00:30:132
7619993070,306cyclictest11441-21kworker/u16:3+efi_rts_wq00:35:120
7619993070,306cyclictest11441-21kworker/u16:3+efi_rts_wq00:35:110
7619993060,305cyclictest28759-21kworker/u16:0+efi_rts_wq21:45:070
7619993060,305cyclictest19147-21kworker/u16:1+efi_rts_wq22:05:110
7621993050,304cyclictest19251-21kworker/u16:2+efi_rts_wq19:55:122
7619993050,304cyclictest28759-21kworker/u16:0+efi_rts_wq22:25:130
7621993040,303cyclictest28759-21kworker/u16:0+efi_rts_wq21:05:002
7620993040,303cyclictest23120-21kworker/u16:2+efi_rts_wq23:40:281
7620993040,303cyclictest19147-21kworker/u16:1+efi_rts_wq20:50:121
7619993040,302cyclictest19147-21kworker/u16:1+efi_rts_wq22:50:180
7622993030,302cyclictest11441-21kworker/u16:3+efi_rts_wq23:55:123
7620993030,302cyclictest28759-21kworker/u16:0+efi_rts_wq21:10:131
7619993030,302cyclictest19147-21kworker/u16:1+efi_rts_wq21:25:140
7621993020,301cyclictest28759-21kworker/u16:0+efi_rts_wq21:40:122
7620993020,301cyclictest19147-21kworker/u16:1+efi_rts_wq22:30:121
7622993010,300cyclictest14474-21kworker/u16:0+efi_rts_wq00:15:333
7622993010,300cyclictest11441-21kworker/u16:3+efi_rts_wq00:20:333
7622993000,297cyclictest23120-21kworker/u16:2+efi_rts_wq23:35:133
7621993000,299cyclictest19147-21kworker/u16:1+efi_rts_wq21:50:082
7621993000,299cyclictest19147-21kworker/u16:1+efi_rts_wq20:20:112
7620992990,297cyclictest28759-21kworker/u16:0+efi_rts_wq22:40:101
7620992980,297cyclictest14474-21kworker/u16:0+efi_rts_wq00:10:131
7619992980,297cyclictest19147-21kworker/u16:1+efi_rts_wq23:40:130
7622992960,295cyclictest19147-21kworker/u16:1+efi_rts_wq23:25:133
7622992960,295cyclictest14474-21kworker/u16:0+efi_rts_wq00:10:123
7619992960,295cyclictest19251-21kworker/u16:2+efi_rts_wq19:19:390
7619992960,295cyclictest19147-21kworker/u16:1+efi_rts_wq21:05:110
7621992950,294cyclictest28759-21kworker/u16:0+efi_rts_wq23:05:132
7621992950,294cyclictest11441-21kworker/u16:3+efi_rts_wq00:05:132
7622992940,293cyclictest19251-21kworker/u16:2+efi_rts_wq19:20:123
7622992940,291cyclictest19147-21kworker/u16:1+efi_rts_wq19:25:143
7620992940,293cyclictest19147-21kworker/u16:1+efi_rts_wq21:40:061
7621992930,292cyclictest28759-21kworker/u16:0+efi_rts_wq21:25:042
7622992920,291cyclictest19251-21kworker/u16:2+efi_rts_wq20:10:123
7619992920,291cyclictest11441-21kworker/u16:3+efi_rts_wq23:50:300
7620992910,290cyclictest28759-21kworker/u16:0+efi_rts_wq21:30:121
7620992910,290cyclictest19147-21kworker/u16:1+efi_rts_wq19:35:131
7621992900,289cyclictest23120-21kworker/u16:2+efi_rts_wq23:45:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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