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2026-05-21 - 15:08

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 100 highest latencies:
System rackcslot3s.osadl.org (updated Thu May 21, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
219982319312,5sleep30-21swapper/307:08:023
220492318310,5sleep20-21swapper/207:08:412
220942317303,5sleep00-21swapper/007:09:150
220062315303,9sleep10-21swapper/107:08:081
22415993000,299cyclictest32093-21kworker/u16:0+efi_rts_wq11:35:130
22417992990,298cyclictest30681-21kworker/u16:3+efi_rts_wq10:25:112
22416992990,298cyclictest5369-21kworker/u16:2+efi_rts_wq08:25:121
22418992980,297cyclictest5369-21kworker/u16:2+efi_rts_wq08:05:123
22418992980,297cyclictest5369-21kworker/u16:2+efi_rts_wq07:57:293
22418992970,296cyclictest5369-21kworker/u16:2+efi_rts_wq09:22:453
22416992970,296cyclictest11463-21kworker/u16:2+efi_rts_wq11:55:121
22415992970,296cyclictest5369-21kworker/u16:2+efi_rts_wq08:05:140
22418992960,295cyclictest30681-21kworker/u16:3+efi_rts_wq09:15:133
22418992950,293cyclictest30681-21kworker/u16:3+efi_rts_wq10:30:133
22417992950,294cyclictest20194-21kworker/u16:4+efi_rts_wq11:25:132
22418992930,292cyclictest5369-21kworker/u16:2+efi_rts_wq09:50:143
22418992930,292cyclictest13775-21kworker/u16:1+efi_rts_wq12:00:123
22415992930,292cyclictest30681-21kworker/u16:3+efi_rts_wq09:05:130
22415992930,292cyclictest30681-21kworker/u16:3+efi_rts_wq07:10:120
22417992920,291cyclictest30681-21kworker/u16:3+efi_rts_wq09:45:142
22417992920,291cyclictest30681-21kworker/u16:3+efi_rts_wq09:15:132
22416992920,291cyclictest11463-21kworker/u16:2+efi_rts_wq12:05:111
22417992910,290cyclictest20194-21kworker/u16:4+efi_rts_wq11:00:112
22416992900,289cyclictest5369-21kworker/u16:2+efi_rts_wq10:32:581
22416992900,289cyclictest30681-21kworker/u16:3+efi_rts_wq08:10:121
22416992890,288cyclictest22813-21kworker/u16:0+efi_rts_wq12:30:131
22415992890,288cyclictest32093-21kworker/u16:0+efi_rts_wq11:15:120
22416992871,285cyclictest20194-21kworker/u16:4+efi_rts_wq11:25:131
22415992870,285cyclictest32093-21kworker/u16:0+efi_rts_wq11:43:090
22415992870,285cyclictest12598-21kworker/u16:0+efi_rts_wq10:43:000
22417992860,285cyclictest11463-21kworker/u16:2+efi_rts_wq12:20:122
22416992860,285cyclictest32093-21kworker/u16:0+efi_rts_wq11:20:131
22415992860,284cyclictest20194-21kworker/u16:4+efi_rts_wq11:10:120
22415992850,284cyclictest11463-21kworker/u16:2+efi_rts_wq12:05:120
22417992820,281cyclictest5369-21kworker/u16:2+efi_rts_wq08:30:122
22415992810,280cyclictest30681-21kworker/u16:3+efi_rts_wq08:20:110
22418992800,279cyclictest32093-21kworker/u16:0+efi_rts_wq11:28:073
22418992790,278cyclictest31560-21kworker/u16:1+efi_rts_wq07:40:123
22417992790,278cyclictest30681-21kworker/u16:3+efi_rts_wq07:25:122
22416992780,277cyclictest5369-21kworker/u16:2+efi_rts_wq09:30:121
22417992730,272cyclictest32093-21kworker/u16:0+efi_rts_wq11:35:132
22417992730,272cyclictest22813-21kworker/u16:0+efi_rts_wq12:35:112
22416992720,269cyclictest30681-21kworker/u16:3+efi_rts_wq10:35:131
22415992720,271cyclictest5369-21kworker/u16:2+efi_rts_wq10:00:130
22418992710,270cyclictest5369-21kworker/u16:2+efi_rts_wq07:45:133
22416992710,270cyclictest32093-21kworker/u16:0+efi_rts_wq11:40:121
22418992700,269cyclictest5369-21kworker/u16:2+efi_rts_wq10:53:033
22418992700,269cyclictest30681-21kworker/u16:3+efi_rts_wq08:40:113
22418992670,266cyclictest5369-21kworker/u16:2+efi_rts_wq08:50:123
22418992670,266cyclictest22813-21kworker/u16:0+efi_rts_wq12:30:133
22417992660,265cyclictest22813-21kworker/u16:0+efi_rts_wq12:25:112
22416992660,264cyclictest5369-21kworker/u16:2+efi_rts_wq11:03:031
22416992650,264cyclictest13775-21kworker/u16:1+efi_rts_wq12:03:131
22418992640,263cyclictest5369-21kworker/u16:2+efi_rts_wq08:35:123
22418992640,263cyclictest32093-21kworker/u16:0+efi_rts_wq11:30:123
22415992620,261cyclictest5369-21kworker/u16:2+efi_rts_wq10:20:140
22415992620,260cyclictest30681-21kworker/u16:3+efi_rts_wq10:30:130
22417992610,260cyclictest5369-21kworker/u16:2+efi_rts_wq09:20:122
22416992610,260cyclictest30681-21kworker/u16:3+efi_rts_wq07:50:121
22418992580,257cyclictest5369-21kworker/u16:2+efi_rts_wq10:55:123
22416992570,256cyclictest30681-21kworker/u16:3+efi_rts_wq07:30:121
22418992560,255cyclictest30681-21kworker/u16:3+efi_rts_wq10:27:563
22416992560,255cyclictest5369-21kworker/u16:2+efi_rts_wq09:10:131
22415992540,253cyclictest22813-21kworker/u16:0+efi_rts_wq12:18:170
22418992530,252cyclictest20194-21kworker/u16:4+efi_rts_wq11:00:133
22418992520,251cyclictest15138-21kworker/u16:1+efi_rts_wq10:40:103
22417992520,251cyclictest5369-21kworker/u16:2+efi_rts_wq08:25:132
22416992520,251cyclictest5369-21kworker/u16:2+efi_rts_wq08:05:121
22418992510,250cyclictest32093-21kworker/u16:0+efi_rts_wq11:20:133
22418992510,249cyclictest31560-21kworker/u16:1+efi_rts_wq07:35:103
22418992500,249cyclictest5369-21kworker/u16:2+efi_rts_wq10:00:133
22417992500,249cyclictest30681-21kworker/u16:3+efi_rts_wq09:55:112
22416992500,249cyclictest30681-21kworker/u16:3+efi_rts_wq10:05:141
22418992490,248cyclictest5369-21kworker/u16:2+efi_rts_wq08:30:123
22416992490,248cyclictest31560-21kworker/u16:1+efi_rts_wq07:40:121
22415992490,248cyclictest5369-21kworker/u16:2+efi_rts_wq07:47:260
22416992480,247cyclictest5369-21kworker/u16:2+efi_rts_wq09:37:481
22416992480,247cyclictest5369-21kworker/u16:2+efi_rts_wq09:37:481
22416992480,247cyclictest5369-21kworker/u16:2+efi_rts_wq09:00:121
22415992480,247cyclictest5369-21kworker/u16:2+efi_rts_wq09:40:110
22417992470,246cyclictest5369-21kworker/u16:2+efi_rts_wq08:37:352
22415992470,246cyclictest5369-21kworker/u16:2+efi_rts_wq07:55:140
22417992460,244cyclictest5369-21kworker/u16:2+efi_rts_wq11:05:112
22416992430,242cyclictest31560-21kworker/u16:1+efi_rts_wq07:35:101
22415992430,242cyclictest5369-21kworker/u16:2+efi_rts_wq10:10:120
22418992420,241cyclictest5369-21kworker/u16:2+efi_rts_wq08:00:123
22416992380,237cyclictest30681-21kworker/u16:3+efi_rts_wq09:07:421
22416992360,235cyclictest11463-21kworker/u16:2+efi_rts_wq12:10:131
22418992350,234cyclictest30681-21kworker/u16:3+efi_rts_wq10:15:133
22417992350,234cyclictest30681-21kworker/u16:3+efi_rts_wq08:45:132
22415992340,233cyclictest30681-21kworker/u16:3+efi_rts_wq08:40:120
22415992340,232cyclictest13775-21kworker/u16:1+efi_rts_wq11:50:110
22418992330,232cyclictest5369-21kworker/u16:2+efi_rts_wq09:35:123
22418992330,232cyclictest5369-21kworker/u16:2+efi_rts_wq09:35:123
22415992320,231cyclictest5369-21kworker/u16:2+efi_rts_wq09:12:430
22415992320,229cyclictest31560-21kworker/u16:1+efi_rts_wq07:35:100
22415992310,230cyclictest30681-21kworker/u16:3+efi_rts_wq07:15:130
22415992310,230cyclictest11463-21kworker/u16:2+efi_rts_wq11:48:100
22416992300,229cyclictest30681-21kworker/u16:3+efi_rts_wq08:55:111
22418992290,228cyclictest5369-21kworker/u16:2+efi_rts_wq11:05:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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