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2026-09-20 - 21:57

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 Sun Sep 20, 2026 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140472326303,5sleep20-21swapper/207:08:212
141002319312,4sleep30-21swapper/307:09:023
139732315307,5sleep00-21swapper/007:07:230
139392315308,4sleep10-21swapper/107:06:551
14440993080,306cyclictest5397-21kworker/u16:4+efi_rts_wq11:40:132
14439993060,305cyclictest13590-21kworker/u16:1+efi_rts_wq07:15:121
14441993050,303cyclictest5397-21kworker/u16:4+efi_rts_wq10:05:123
14441993040,303cyclictest5397-21kworker/u16:4+efi_rts_wq11:22:263
14441993040,302cyclictest13590-21kworker/u16:1+efi_rts_wq10:30:133
14441993010,300cyclictest5397-21kworker/u16:4+efi_rts_wq12:25:133
14438993000,299cyclictest5397-21kworker/u16:4+efi_rts_wq10:25:130
14438993000,299cyclictest13590-21kworker/u16:1+efi_rts_wq10:10:130
14440992990,298cyclictest5397-21kworker/u16:4+efi_rts_wq08:35:122
14440992990,298cyclictest32606-21kworker/u16:1+efi_rts_wq12:35:132
14440992990,298cyclictest2088-21kworker/u16:2+efi_rts_wq11:00:132
14439992990,298cyclictest13590-21kworker/u16:1+efi_rts_wq10:37:171
14441992980,297cyclictest5397-21kworker/u16:4+efi_rts_wq10:35:143
14441992970,296cyclictest5397-21kworker/u16:4+efi_rts_wq10:15:143
14440992970,296cyclictest13590-21kworker/u16:1+efi_rts_wq08:45:122
14438992970,296cyclictest2088-21kworker/u16:2+efi_rts_wq11:20:110
14438992970,296cyclictest13590-21kworker/u16:1+efi_rts_wq07:10:130
14441992960,295cyclictest5397-21kworker/u16:4+efi_rts_wq12:30:143
14441992960,295cyclictest13590-21kworker/u16:1+efi_rts_wq09:50:123
14440992960,294cyclictest5397-21kworker/u16:4+efi_rts_wq10:35:142
14439992950,294cyclictest13590-21kworker/u16:1+efi_rts_wq09:42:061
14439992950,293cyclictest13590-21kworker/u16:1+efi_rts_wq07:25:131
14441992940,293cyclictest7692-21kworker/u16:0+efi_rts_wq07:55:133
14441992940,293cyclictest5397-21kworker/u16:4+efi_rts_wq09:15:123
14440992940,293cyclictest13590-21kworker/u16:1+efi_rts_wq09:50:122
14439992940,292cyclictest5397-21kworker/u16:4+efi_rts_wq11:55:121
14440992930,292cyclictest2088-21kworker/u16:2+efi_rts_wq11:25:132
14439992930,292cyclictest2088-21kworker/u16:2+efi_rts_wq11:27:271
14439992910,290cyclictest32606-21kworker/u16:1+efi_rts_wq11:32:271
14438992910,290cyclictest32606-21kworker/u16:1+efi_rts_wq11:42:300
14438992910,290cyclictest13590-21kworker/u16:1+efi_rts_wq08:56:570
14441992900,289cyclictest5397-21kworker/u16:4+efi_rts_wq12:15:133
14439992900,287cyclictest5397-21kworker/u16:4+efi_rts_wq11:05:131
14441992870,286cyclictest5397-21kworker/u16:4+efi_rts_wq10:40:133
14441992870,286cyclictest2088-21kworker/u16:2+efi_rts_wq11:25:133
14438992860,285cyclictest2088-21kworker/u16:2+efi_rts_wq10:45:140
14438992850,284cyclictest32606-21kworker/u16:1+efi_rts_wq11:35:130
14441992840,283cyclictest7692-21kworker/u16:0+efi_rts_wq07:35:143
14441992840,283cyclictest32606-21kworker/u16:1+efi_rts_wq12:37:383
14439992840,283cyclictest5397-21kworker/u16:4+efi_rts_wq11:37:291
14438992840,282cyclictest5397-21kworker/u16:4+efi_rts_wq11:07:230
14439992830,282cyclictest5397-21kworker/u16:4+efi_rts_wq09:55:121
14438992820,281cyclictest5397-21kworker/u16:4+efi_rts_wq12:30:140
14441992810,280cyclictest5397-21kworker/u16:4+efi_rts_wq12:12:343
14441992810,280cyclictest5397-21kworker/u16:4+efi_rts_wq08:51:563
14440992790,278cyclictest5397-21kworker/u16:4+efi_rts_wq09:25:152
14439992790,278cyclictest5397-21kworker/u16:4+efi_rts_wq08:35:131
14439992790,278cyclictest13590-21kworker/u16:1+efi_rts_wq08:31:531
14440992780,277cyclictest13590-21kworker/u16:1+efi_rts_wq08:05:132
14440992780,275cyclictest5397-21kworker/u16:4+efi_rts_wq08:50:142
14439992780,276cyclictest5397-21kworker/u16:4+efi_rts_wq11:15:121
14439992780,276cyclictest2088-21kworker/u16:2+efi_rts_wq11:00:131
14440992770,276cyclictest2088-21kworker/u16:2+efi_rts_wq11:10:142
14438992770,276cyclictest5397-21kworker/u16:4+efi_rts_wq09:30:130
14438992770,274cyclictest13590-21kworker/u16:1+efi_rts_wq08:30:150
14440992740,272cyclictest7692-21kworker/u16:0+efi_rts_wq07:40:122
14438992730,272cyclictest32606-21kworker/u16:1+efi_rts_wq12:05:120
14441992720,271cyclictest13590-21kworker/u16:1+efi_rts_wq10:02:103
14439992720,271cyclictest5397-21kworker/u16:4+efi_rts_wq09:35:151
14438992710,270cyclictest5397-21kworker/u16:4+efi_rts_wq12:25:130
14441992700,269cyclictest13590-21kworker/u16:1+efi_rts_wq07:45:133
14440992700,269cyclictest13590-21kworker/u16:1+efi_rts_wq08:10:142
14441992690,268cyclictest13590-21kworker/u16:1+efi_rts_wq10:22:143
14439992690,268cyclictest13590-21kworker/u16:1+efi_rts_wq09:20:121
14441992680,267cyclictest5397-21kworker/u16:4+efi_rts_wq09:05:133
14441992680,267cyclictest2088-21kworker/u16:2+efi_rts_wq10:52:203
14441992670,266cyclictest5397-21kworker/u16:4+efi_rts_wq11:45:133
14440992650,264cyclictest32606-21kworker/u16:1+efi_rts_wq11:35:122
14439992650,264cyclictest5397-21kworker/u16:4+efi_rts_wq10:27:151
14440992640,263cyclictest5397-21kworker/u16:4+efi_rts_wq09:45:142
14441992630,262cyclictest32606-21kworker/u16:1+efi_rts_wq12:20:123
14439992620,261cyclictest5397-21kworker/u16:4+efi_rts_wq08:15:141
14439992620,261cyclictest13590-21kworker/u16:1+efi_rts_wq07:10:131
14439992610,260cyclictest7692-21kworker/u16:0+efi_rts_wq07:20:131
14441992600,258cyclictest5397-21kworker/u16:4+efi_rts_wq10:55:133
14440992600,257cyclictest13590-21kworker/u16:1+efi_rts_wq07:50:122
14438992570,256cyclictest13590-21kworker/u16:1+efi_rts_wq08:21:500
14439992560,255cyclictest7692-21kworker/u16:0+efi_rts_wq07:30:131
14441992540,253cyclictest13590-21kworker/u16:1+efi_rts_wq07:26:413
14440992530,252cyclictest5397-21kworker/u16:4+efi_rts_wq10:55:142
14438992530,252cyclictest5397-21kworker/u16:4+efi_rts_wq09:55:120
14440992510,250cyclictest5397-21kworker/u16:4+efi_rts_wq11:15:122
14441992490,248cyclictest5397-21kworker/u16:4+efi_rts_wq08:40:143
14440992470,246cyclictest13590-21kworker/u16:1+efi_rts_wq09:00:142
14439992470,246cyclictest5397-21kworker/u16:4+efi_rts_wq11:40:131
14438992440,243cyclictest5397-21kworker/u16:4+efi_rts_wq08:41:540
14441992410,240cyclictest32606-21kworker/u16:1+efi_rts_wq11:57:323
14438992410,240cyclictest5397-21kworker/u16:4+efi_rts_wq12:10:150
14438992410,240cyclictest5397-21kworker/u16:4+efi_rts_wq12:02:320
14438992400,238cyclictest13590-21kworker/u16:1+efi_rts_wq10:30:130
14440992390,238cyclictest5397-21kworker/u16:4+efi_rts_wq12:00:122
14440992390,238cyclictest32606-21kworker/u16:1+efi_rts_wq12:05:132
14441992380,237cyclictest5397-21kworker/u16:4+efi_rts_wq08:16:493
14439992380,237cyclictest2088-21kworker/u16:2+efi_rts_wq10:47:191
14438992340,233cyclictest5397-21kworker/u16:4+efi_rts_wq10:17:130
14441992290,228cyclictest5397-21kworker/u16:4+efi_rts_wq11:50:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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