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2026-06-06 - 11:02

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 Sat Jun 06, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36242318305,4sleep10-21swapper/119:06:331
35812315307,5sleep00-21swapper/019:06:000
20522315308,5sleep30-21swapper/319:05:063
38912314307,5sleep20-21swapper/219:09:582
4267993010,300cyclictest22208-21kworker/u16:2+efi_rts_wq22:35:132
4264993010,300cyclictest22208-21kworker/u16:2+efi_rts_wq19:30:120
4267993000,299cyclictest22208-21kworker/u16:2+efi_rts_wq19:50:122
4268992990,298cyclictest22208-21kworker/u16:2+efi_rts_wq23:25:123
4265992990,298cyclictest15510-21kworker/u16:3+efi_rts_wq00:01:201
4264992990,298cyclictest22208-21kworker/u16:2+efi_rts_wq19:25:120
4264992980,297cyclictest24269-21kworker/u16:1+efi_rts_wq21:15:120
4267992970,296cyclictest20202-21kworker/u16:1+efi_rts_wq23:51:182
4265992970,296cyclictest22208-21kworker/u16:2+efi_rts_wq20:34:201
4265992960,295cyclictest22208-21kworker/u16:2+efi_rts_wq21:10:121
4268992950,294cyclictest28702-21kworker/u16:1+efi_rts_wq22:54:463
4268992950,294cyclictest28702-21kworker/u16:1+efi_rts_wq22:45:123
4264992950,294cyclictest31302-21kworker/u16:0+efi_rts_wq00:05:120
4267992940,293cyclictest22208-21kworker/u16:2+efi_rts_wq19:55:122
4264992940,292cyclictest22208-21kworker/u16:2+efi_rts_wq20:15:120
4267992920,291cyclictest24269-21kworker/u16:1+efi_rts_wq20:55:132
4267992920,291cyclictest22208-21kworker/u16:2+efi_rts_wq22:00:132
4267992920,291cyclictest22208-21kworker/u16:2+efi_rts_wq20:30:122
4264992920,291cyclictest22208-21kworker/u16:2+efi_rts_wq19:10:120
4268992910,290cyclictest24269-21kworker/u16:1+efi_rts_wq22:25:123
4265992910,290cyclictest22208-21kworker/u16:2+efi_rts_wq20:05:121
4267992900,289cyclictest22208-21kworker/u16:2+efi_rts_wq22:05:132
4268992890,288cyclictest24269-21kworker/u16:1+efi_rts_wq21:34:313
4268992890,288cyclictest20202-21kworker/u16:1+efi_rts_wq23:30:133
4264992880,287cyclictest22208-21kworker/u16:2+efi_rts_wq22:30:130
4268992870,286cyclictest15510-21kworker/u16:3+efi_rts_wq00:35:123
4264992870,286cyclictest24269-21kworker/u16:1+efi_rts_wq21:30:120
4267992860,284cyclictest22208-21kworker/u16:2+efi_rts_wq23:05:122
4268992840,283cyclictest24269-21kworker/u16:1+efi_rts_wq22:20:123
4268992840,283cyclictest22208-21kworker/u16:2+efi_rts_wq23:15:133
4265992840,283cyclictest15510-21kworker/u16:3+efi_rts_wq00:25:121
4265992830,282cyclictest24269-21kworker/u16:1+efi_rts_wq20:50:121
4264992810,280cyclictest24269-21kworker/u16:1+efi_rts_wq21:40:110
4267992800,279cyclictest22208-21kworker/u16:2+efi_rts_wq21:10:122
4264992780,277cyclictest31302-21kworker/u16:0+efi_rts_wq00:15:120
4264992780,277cyclictest24269-21kworker/u16:1+efi_rts_wq20:59:240
4264992780,277cyclictest22208-21kworker/u16:2+efi_rts_wq19:40:110
4267992760,275cyclictest22208-21kworker/u16:2+efi_rts_wq23:00:112
4264992750,274cyclictest24269-21kworker/u16:1+efi_rts_wq22:04:350
4268992740,273cyclictest15510-21kworker/u16:3+efi_rts_wq23:35:123
4267992740,272cyclictest24269-21kworker/u16:1+efi_rts_wq22:20:132
4268992730,272cyclictest15510-21kworker/u16:3+efi_rts_wq00:00:113
4265992730,272cyclictest31302-21kworker/u16:0+efi_rts_wq23:55:121
4265992730,272cyclictest22208-21kworker/u16:2+efi_rts_wq20:10:131
4268992720,271cyclictest22208-21kworker/u16:2+efi_rts_wq21:55:123
4264992720,271cyclictest22208-21kworker/u16:2+efi_rts_wq23:00:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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