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2026-04-13 - 01:23

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 12, 2026 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295322330323,5sleep00-21swapper/007:08:590
295442329323,4sleep20-21swapper/207:09:092
293842319312,5sleep10-21swapper/107:07:031
295152316309,4sleep30-21swapper/307:08:453
29880993140,313cyclictest5314-21kworker/u16:2+efi_rts_wq10:20:123
29880993140,313cyclictest3747-21kworker/u16:4+efi_rts_wq10:52:303
29880993140,312cyclictest5314-21kworker/u16:2+efi_rts_wq10:42:283
29880993130,312cyclictest5314-21kworker/u16:2+efi_rts_wq08:40:133
29878993130,312cyclictest7605-21kworker/u16:0+efi_rts_wq10:30:131
29878993130,312cyclictest17828-21kworker/u16:0+efi_rts_wq11:57:421
29880993100,309cyclictest5314-21kworker/u16:2+efi_rts_wq08:35:123
29878993100,309cyclictest7605-21kworker/u16:0+efi_rts_wq08:30:141
29878993080,307cyclictest3747-21kworker/u16:4+efi_rts_wq11:05:101
29878993070,306cyclictest7605-21kworker/u16:0+efi_rts_wq08:20:141
29880993030,301cyclictest5314-21kworker/u16:2+efi_rts_wq11:20:133
29880993030,301cyclictest17828-21kworker/u16:0+efi_rts_wq11:45:113
29877993030,302cyclictest7605-21kworker/u16:0+efi_rts_wq08:50:120
29880993020,301cyclictest7605-21kworker/u16:0+efi_rts_wq08:00:133
29878993020,301cyclictest5314-21kworker/u16:2+efi_rts_wq11:40:131
29880993000,299cyclictest7605-21kworker/u16:0+efi_rts_wq09:50:123
29880992990,298cyclictest5314-21kworker/u16:2+efi_rts_wq07:45:143
29877992990,298cyclictest5314-21kworker/u16:2+efi_rts_wq09:05:150
29877992980,297cyclictest5314-21kworker/u16:2+efi_rts_wq12:15:130
29877992970,296cyclictest7605-21kworker/u16:0+efi_rts_wq07:20:120
29877992970,296cyclictest5314-21kworker/u16:2+efi_rts_wq10:30:130
29879992960,295cyclictest5314-21kworker/u16:2+efi_rts_wq07:45:142
29879992960,295cyclictest3543-21kworker/u16:1+efi_rts_wq11:15:122
29880992950,294cyclictest7605-21kworker/u16:0+efi_rts_wq07:25:133
29878992950,294cyclictest5314-21kworker/u16:2+efi_rts_wq07:30:111
29878992940,293cyclictest17828-21kworker/u16:0+efi_rts_wq11:27:361
29877992940,293cyclictest5314-21kworker/u16:2+efi_rts_wq12:00:160
29879992920,291cyclictest3543-21kworker/u16:1+efi_rts_wq11:10:142
29877992920,291cyclictest7605-21kworker/u16:0+efi_rts_wq07:15:010
29877992920,289cyclictest3747-21kworker/u16:4+efi_rts_wq10:50:130
29880992910,290cyclictest7605-21kworker/u16:0+efi_rts_wq09:45:123
29879992910,290cyclictest5314-21kworker/u16:2+efi_rts_wq10:12:212
29878992910,290cyclictest5314-21kworker/u16:2+efi_rts_wq07:56:581
29878992910,290cyclictest5314-21kworker/u16:2+efi_rts_wq07:56:571
29879992900,289cyclictest7605-21kworker/u16:0+efi_rts_wq07:15:122
29879992900,289cyclictest17828-21kworker/u16:0+efi_rts_wq12:27:492
29877992900,289cyclictest5314-21kworker/u16:2+efi_rts_wq12:35:140
29878992890,288cyclictest5314-21kworker/u16:2+efi_rts_wq10:25:101
29880992880,287cyclictest7605-21kworker/u16:0+efi_rts_wq10:07:213
29878992870,286cyclictest5314-21kworker/u16:2+efi_rts_wq12:25:121
29878992860,285cyclictest17828-21kworker/u16:0+efi_rts_wq12:20:121
29877992850,284cyclictest7605-21kworker/u16:0+efi_rts_wq08:45:130
29877992850,284cyclictest5314-21kworker/u16:2+efi_rts_wq11:50:130
29879992840,283cyclictest7605-21kworker/u16:0+efi_rts_wq07:35:152
29879992830,282cyclictest5314-21kworker/u16:2+efi_rts_wq10:20:122
29879992830,281cyclictest5314-21kworker/u16:2+efi_rts_wq10:55:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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