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2026-04-26 - 21:14

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 Sun Apr 26, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17452352330,5sleep30-21swapper/307:07:303
16382316309,5sleep10-21swapper/107:06:081
2210993150,314cyclictest18915-21kworker/u16:0+efi_rts_wq08:32:073
2207993150,314cyclictest6475-21kworker/u16:1+efi_rts_wq11:27:401
2206993150,312cyclictest17892-21kworker/u16:2+efi_rts_wq10:20:110
18412315308,5sleep00-21swapper/007:08:420
16042315308,5sleep20-21swapper/207:05:412
2207993140,313cyclictest17892-21kworker/u16:2+efi_rts_wq10:40:111
2206993140,313cyclictest17892-21kworker/u16:2+efi_rts_wq11:40:110
2206993130,312cyclictest17892-21kworker/u16:2+efi_rts_wq09:35:130
2210993120,311cyclictest17892-21kworker/u16:2+efi_rts_wq11:00:133
2207993110,310cyclictest17892-21kworker/u16:2+efi_rts_wq09:47:211
2210993100,309cyclictest17892-21kworker/u16:2+efi_rts_wq09:15:143
2208993080,307cyclictest20846-21kworker/u16:1+efi_rts_wq07:25:152
2207993080,307cyclictest18915-21kworker/u16:0+efi_rts_wq07:55:131
2207993080,307cyclictest17892-21kworker/u16:2+efi_rts_wq11:32:411
2210993070,305cyclictest13976-21kworker/u16:0+efi_rts_wq11:07:363
2206993070,306cyclictest6475-21kworker/u16:1+efi_rts_wq11:35:130
2207993060,304cyclictest17892-21kworker/u16:2+efi_rts_wq12:05:131
2210993050,304cyclictest17892-21kworker/u16:2+efi_rts_wq09:00:103
2210993020,301cyclictest18915-21kworker/u16:0+efi_rts_wq10:47:323
2210993020,301cyclictest17892-21kworker/u16:2+efi_rts_wq11:40:123
2210993010,300cyclictest18915-21kworker/u16:0+efi_rts_wq09:55:133
2210993010,300cyclictest17892-21kworker/u16:2+efi_rts_wq09:25:133
2210992990,298cyclictest17892-21kworker/u16:2+efi_rts_wq10:10:123
2208992990,298cyclictest17892-21kworker/u16:2+efi_rts_wq10:00:122
2206992990,298cyclictest5271-21kworker/u16:3+efi_rts_wq12:17:510
2207992980,297cyclictest20846-21kworker/u16:1+efi_rts_wq07:35:131
2207992980,295cyclictest17892-21kworker/u16:2+efi_rts_wq09:32:191
2206992980,297cyclictest20846-21kworker/u16:1+efi_rts_wq07:20:130
2206992980,297cyclictest18915-21kworker/u16:0+efi_rts_wq10:25:140
2206992980,297cyclictest18915-21kworker/u16:0+efi_rts_wq10:25:130
2206992980,297cyclictest18915-21kworker/u16:0+efi_rts_wq09:57:210
2210992970,295cyclictest6475-21kworker/u16:1+efi_rts_wq10:57:343
2206992970,296cyclictest18915-21kworker/u16:0+efi_rts_wq08:25:130
2206992970,296cyclictest17892-21kworker/u16:2+efi_rts_wq12:35:130
2206992960,295cyclictest18915-21kworker/u16:0+efi_rts_wq08:30:130
2206992960,295cyclictest17892-21kworker/u16:2+efi_rts_wq08:22:060
2208992950,294cyclictest18915-21kworker/u16:0+efi_rts_wq10:05:142
2206992950,294cyclictest17892-21kworker/u16:2+efi_rts_wq08:12:040
2210992940,293cyclictest17892-21kworker/u16:2+efi_rts_wq10:00:113
2210992940,293cyclictest17892-21kworker/u16:2+efi_rts_wq08:20:123
2208992930,292cyclictest17892-21kworker/u16:2+efi_rts_wq09:35:142
2206992930,292cyclictest17892-21kworker/u16:2+efi_rts_wq10:15:120
2206992930,292cyclictest17892-21kworker/u16:2+efi_rts_wq07:15:000
2208992920,291cyclictest5271-21kworker/u16:3+efi_rts_wq12:10:142
2207992920,291cyclictest17892-21kworker/u16:2+efi_rts_wq08:40:141
2210992910,290cyclictest17892-21kworker/u16:2+efi_rts_wq07:45:133
2210992890,288cyclictest6475-21kworker/u16:1+efi_rts_wq11:10:133
2206992890,288cyclictest18915-21kworker/u16:0+efi_rts_wq08:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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