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2026-03-22 - 13:14

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 Mar 22, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21072322316,4sleep20-21swapper/219:08:482
19942318303,5sleep00-21swapper/019:07:210
19102317310,5sleep30-21swapper/319:06:173
20512316310,4sleep10-21swapper/119:08:031
2471993110,310cyclictest6022-21kworker/u16:3+efi_rts_wq23:10:433
2468993110,310cyclictest22964-21kworker/u16:3+efi_rts_wq20:05:140
2470993100,309cyclictest30254-21kworker/u16:1+efi_rts_wq23:55:122
2469993100,309cyclictest7320-21kworker/u16:1+efi_rts_wq22:20:321
2469993100,309cyclictest2980-21kworker/u16:2+efi_rts_wq00:15:531
2469993090,308cyclictest3284-21kworker/u16:1+efi_rts_wq22:55:121
2468993070,306cyclictest17532-21kworker/u16:0+efi_rts_wq00:10:140
2470993060,305cyclictest22448-21kworker/u16:2+efi_rts_wq23:25:122
2468993050,304cyclictest9495-21kworker/u16:1+efi_rts_wq19:40:120
2468993040,303cyclictest9495-21kworker/u16:1+efi_rts_wq19:29:580
2468993040,303cyclictest32762-21kworker/u16:3+efi_rts_wq20:40:100
2470993030,302cyclictest22964-21kworker/u16:3+efi_rts_wq19:35:142
2468993030,302cyclictest32762-21kworker/u16:3+efi_rts_wq21:00:120
2471993020,301cyclictest7320-21kworker/u16:1+efi_rts_wq22:15:303
2471993010,300cyclictest28221-21kworker/u16:2+efi_rts_wq21:20:213
2471993000,299cyclictest3284-21kworker/u16:1+efi_rts_wq23:00:123
2468993000,299cyclictest22448-21kworker/u16:2+efi_rts_wq23:25:450
2471992990,298cyclictest3284-21kworker/u16:1+efi_rts_wq22:55:123
2471992990,298cyclictest2980-21kworker/u16:2+efi_rts_wq00:25:133
2470992990,298cyclictest22964-21kworker/u16:3+efi_rts_wq19:50:132
2469992990,298cyclictest2980-21kworker/u16:2+efi_rts_wq00:00:121
2469992990,298cyclictest11897-21kworker/u16:1+efi_rts_wq20:55:131
2469992980,297cyclictest2980-21kworker/u16:2+efi_rts_wq23:50:131
2469992980,297cyclictest22964-21kworker/u16:3+efi_rts_wq19:55:111
2471992970,296cyclictest22964-21kworker/u16:3+efi_rts_wq20:00:043
2469992970,296cyclictest11897-21kworker/u16:1+efi_rts_wq20:50:121
2469992960,295cyclictest11897-21kworker/u16:1+efi_rts_wq20:45:111
2470992950,294cyclictest30254-21kworker/u16:1+efi_rts_wq00:05:122
2468992940,292cyclictest3284-21kworker/u16:1+efi_rts_wq23:00:120
2469992930,290cyclictest25988-21kworker/u16:0+efi_rts_wq22:40:361
2471992920,291cyclictest28465-21kworker/u16:2+efi_rts_wq22:35:153
2471992920,291cyclictest28465-21kworker/u16:2+efi_rts_wq22:35:143
2468992920,291cyclictest9495-21kworker/u16:1+efi_rts_wq19:55:030
2468992920,291cyclictest7320-21kworker/u16:1+efi_rts_wq22:20:130
2470992910,290cyclictest2980-21kworker/u16:2+efi_rts_wq00:30:122
2468992910,290cyclictest2719-21kworker/u16:3+efi_rts_wq22:15:130
2468992900,289cyclictest2980-21kworker/u16:2+efi_rts_wq00:00:510
2470992890,288cyclictest2980-21kworker/u16:2+efi_rts_wq00:00:122
2469992890,288cyclictest25988-21kworker/u16:0+efi_rts_wq22:45:101
2471992870,285cyclictest25988-21kworker/u16:0+efi_rts_wq22:45:103
2470992870,286cyclictest2980-21kworker/u16:2+efi_rts_wq00:15:122
2469992870,286cyclictest30160-21kworker/u16:2+efi_rts_wq20:25:121
2469992840,283cyclictest9495-21kworker/u16:1+efi_rts_wq20:00:141
2468992840,283cyclictest25988-21kworker/u16:0+efi_rts_wq23:20:130
2471992830,282cyclictest14444-21kworker/u16:0+efi_rts_wq20:10:133
2468992830,282cyclictest30160-21kworker/u16:2+efi_rts_wq20:25:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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