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2026-07-07 - 01:45

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 Mon Jul 06, 2026 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
223692324317,5sleep10-21swapper/107:06:441
223692324317,5sleep10-21swapper/107:06:441
226162323309,4sleep30-21swapper/307:09:543
226162323309,4sleep30-21swapper/307:09:533
225582318311,5sleep20-21swapper/207:09:092
225582318311,5sleep20-21swapper/207:09:092
223882315307,5sleep00-21swapper/007:06:590
223882315307,5sleep00-21swapper/007:06:580
22893992990,298cyclictest4099-21kworker/u16:2+efi_rts_wq12:35:133
22891992980,297cyclictest4099-21kworker/u16:2+efi_rts_wq08:00:121
22893992970,296cyclictest13847-21kworker/u16:0+efi_rts_wq07:50:133
22890992970,295cyclictest13847-21kworker/u16:0+efi_rts_wq11:10:120
22891992960,295cyclictest4099-21kworker/u16:2+efi_rts_wq07:10:181
22891992960,294cyclictest13847-21kworker/u16:0+efi_rts_wq07:45:131
22892992930,292cyclictest4099-21kworker/u16:2+efi_rts_wq10:15:112
22891992910,290cyclictest4099-21kworker/u16:2+efi_rts_wq08:30:121
22890992910,290cyclictest4099-21kworker/u16:2+efi_rts_wq12:15:130
22890992900,289cyclictest4099-21kworker/u16:2+efi_rts_wq10:58:150
22893992890,288cyclictest13847-21kworker/u16:0+efi_rts_wq10:35:123
22891992890,288cyclictest13847-21kworker/u16:0+efi_rts_wq09:17:561
22893992880,287cyclictest4099-21kworker/u16:2+efi_rts_wq07:40:123
22890992880,286cyclictest4099-21kworker/u16:2+efi_rts_wq09:15:120
22893992870,286cyclictest4099-21kworker/u16:2+efi_rts_wq11:20:133
22893992870,286cyclictest13847-21kworker/u16:0+efi_rts_wq11:50:103
22893992870,286cyclictest13847-21kworker/u16:0+efi_rts_wq09:48:023
22892992860,285cyclictest13847-21kworker/u16:0+efi_rts_wq11:45:122
22891992850,284cyclictest13847-21kworker/u16:0+efi_rts_wq09:07:541
22890992840,283cyclictest4099-21kworker/u16:2+efi_rts_wq09:40:120
22892992830,282cyclictest4099-21kworker/u16:2+efi_rts_wq09:38:002
22893992820,281cyclictest30990-21kworker/u16:1+efi_rts_wq07:12:333
22893992820,281cyclictest13847-21kworker/u16:0+efi_rts_wq11:58:253
22890992820,281cyclictest4099-21kworker/u16:2+efi_rts_wq10:53:140
22891992810,280cyclictest13847-21kworker/u16:0+efi_rts_wq10:00:121
22890992810,280cyclictest13847-21kworker/u16:0+efi_rts_wq10:35:130
22892992800,279cyclictest13847-21kworker/u16:0+efi_rts_wq08:22:452
22891992800,279cyclictest4099-21kworker/u16:2+efi_rts_wq07:30:121
22892992790,278cyclictest13847-21kworker/u16:0+efi_rts_wq10:10:112
22892992790,278cyclictest13847-21kworker/u16:0+efi_rts_wq07:42:382
22890992780,276cyclictest30990-21kworker/u16:1+efi_rts_wq07:20:110
22892992770,276cyclictest4099-21kworker/u16:2+efi_rts_wq09:25:112
22892992770,276cyclictest4099-21kworker/u16:2+efi_rts_wq07:32:372
22891992770,273cyclictest4099-21kworker/u16:2+efi_rts_wq11:15:101
22891992750,274cyclictest4099-21kworker/u16:2+efi_rts_wq08:42:471
22893992740,272cyclictest4099-21kworker/u16:2+efi_rts_wq09:15:133
22890992730,272cyclictest13847-21kworker/u16:0+efi_rts_wq12:10:120
22890992730,270cyclictest4099-21kworker/u16:2+efi_rts_wq11:15:100
22893992720,271cyclictest13847-21kworker/u16:0+efi_rts_wq08:02:423
22892992720,271cyclictest13847-21kworker/u16:0+efi_rts_wq12:13:262
22892992710,270cyclictest4099-21kworker/u16:2+efi_rts_wq07:15:142
22891992700,269cyclictest4099-21kworker/u16:2+efi_rts_wq07:15:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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