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2026-05-24 - 02:09

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 Sat May 23, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86102336311,22sleep10-21swapper/107:05:391
86412317309,5sleep20-21swapper/207:06:042
88572316308,5sleep30-21swapper/307:08:513
71072315308,5sleep00-21swapper/007:05:060
9211993000,299cyclictest15625-21kworker/u16:1+efi_rts_wq08:10:140
9212992980,297cyclictest16436-21kworker/u16:3+efi_rts_wq08:42:521
9211992980,297cyclictest31697-21kworker/u16:3+efi_rts_wq11:45:120
9212992960,295cyclictest8251-21kworker/u16:0+efi_rts_wq11:40:131
9212992960,295cyclictest8251-21kworker/u16:0+efi_rts_wq11:35:131
9212992960,295cyclictest16436-21kworker/u16:3+efi_rts_wq10:10:141
9214992940,293cyclictest15625-21kworker/u16:1+efi_rts_wq09:00:123
9212992940,293cyclictest16436-21kworker/u16:3+efi_rts_wq07:15:011
9213992930,292cyclictest31697-21kworker/u16:3+efi_rts_wq11:50:132
9212992930,292cyclictest16436-21kworker/u16:3+efi_rts_wq09:02:561
9211992930,292cyclictest16436-21kworker/u16:3+efi_rts_wq09:45:130
9211992930,292cyclictest15625-21kworker/u16:1+efi_rts_wq08:20:120
9214992920,291cyclictest16436-21kworker/u16:3+efi_rts_wq08:40:133
9212992920,291cyclictest16436-21kworker/u16:3+efi_rts_wq10:28:101
9213992910,290cyclictest32640-21kworker/u16:2+efi_rts_wq10:55:132
9211992910,290cyclictest32640-21kworker/u16:2+efi_rts_wq10:55:120
9211992890,288cyclictest15735-21kworker/u16:3+efi_rts_wq11:10:120
9211992890,288cyclictest15625-21kworker/u16:1+efi_rts_wq08:00:140
9214992870,286cyclictest32640-21kworker/u16:2+efi_rts_wq11:23:213
9211992870,285cyclictest16436-21kworker/u16:3+efi_rts_wq10:35:120
9214992860,285cyclictest8251-21kworker/u16:0+efi_rts_wq11:30:143
9214992860,285cyclictest16436-21kworker/u16:3+efi_rts_wq10:18:083
9213992850,284cyclictest32640-21kworker/u16:2+efi_rts_wq11:15:122
9213992840,283cyclictest8251-21kworker/u16:0+efi_rts_wq12:25:132
9211992840,283cyclictest32640-21kworker/u16:2+efi_rts_wq10:48:130
9211992840,283cyclictest15625-21kworker/u16:1+efi_rts_wq07:35:270
9213992820,281cyclictest15625-21kworker/u16:1+efi_rts_wq10:20:152
9212992820,281cyclictest15625-21kworker/u16:1+efi_rts_wq08:02:431
9211992820,281cyclictest15625-21kworker/u16:1+efi_rts_wq10:53:150
9212992810,280cyclictest31697-21kworker/u16:3+efi_rts_wq12:35:131
9211992810,279cyclictest16436-21kworker/u16:3+efi_rts_wq07:55:130
9211992800,279cyclictest15625-21kworker/u16:1+efi_rts_wq09:30:130
9212992780,277cyclictest16436-21kworker/u16:3+efi_rts_wq08:37:501
9214992770,276cyclictest8251-21kworker/u16:0+efi_rts_wq11:25:123
9211992760,275cyclictest15625-21kworker/u16:1+efi_rts_wq08:30:140
9214992750,274cyclictest15625-21kworker/u16:1+efi_rts_wq08:15:133
9214992750,274cyclictest15625-21kworker/u16:1+efi_rts_wq07:35:273
9214992740,273cyclictest31697-21kworker/u16:3+efi_rts_wq12:08:303
9214992740,273cyclictest31697-21kworker/u16:3+efi_rts_wq12:08:293
9211992740,273cyclictest8251-21kworker/u16:0+efi_rts_wq12:05:120
9211992740,273cyclictest8251-21kworker/u16:0+efi_rts_wq12:05:120
9212992730,272cyclictest16436-21kworker/u16:3+efi_rts_wq07:30:131
9214992720,271cyclictest25666-21kworker/u16:0+efi_rts_wq07:10:123
9212992720,271cyclictest16436-21kworker/u16:3+efi_rts_wq10:35:121
9212992720,271cyclictest16436-21kworker/u16:3+efi_rts_wq07:45:131
9213992710,270cyclictest16436-21kworker/u16:3+efi_rts_wq09:10:142
9212992710,270cyclictest15625-21kworker/u16:1+efi_rts_wq09:25:141
9213992700,269cyclictest16436-21kworker/u16:3+efi_rts_wq07:40:142
9212992700,268cyclictest32640-21kworker/u16:2+efi_rts_wq11:15:121
9212992680,267cyclictest8251-21kworker/u16:0+efi_rts_wq12:20:121
9214992670,266cyclictest8251-21kworker/u16:0+efi_rts_wq12:20:123
9211992660,265cyclictest32640-21kworker/u16:2+efi_rts_wq11:33:210
9213992650,264cyclictest15625-21kworker/u16:1+efi_rts_wq10:45:132
9212992650,264cyclictest31697-21kworker/u16:3+efi_rts_wq12:30:121
9212992650,264cyclictest31697-21kworker/u16:3+efi_rts_wq11:50:131
9213992630,262cyclictest16436-21kworker/u16:3+efi_rts_wq08:55:132
9212992630,262cyclictest16436-21kworker/u16:3+efi_rts_wq10:00:141
9214992620,261cyclictest8251-21kworker/u16:0+efi_rts_wq11:08:173
9212992610,260cyclictest16436-21kworker/u16:3+efi_rts_wq09:50:141
9213992600,259cyclictest32640-21kworker/u16:2+efi_rts_wq11:00:132
9213992600,257cyclictest16436-21kworker/u16:3+efi_rts_wq10:25:132
9212992600,259cyclictest16436-21kworker/u16:3+efi_rts_wq09:58:051
9214992590,256cyclictest16436-21kworker/u16:3+efi_rts_wq09:55:133
9211992590,258cyclictest15625-21kworker/u16:1+efi_rts_wq09:25:130
9212992570,256cyclictest15625-21kworker/u16:1+efi_rts_wq09:07:561
9211992570,254cyclictest15625-21kworker/u16:1+efi_rts_wq10:03:070
9212992560,255cyclictest8251-21kworker/u16:0+efi_rts_wq12:00:131
9214992540,253cyclictest16436-21kworker/u16:3+efi_rts_wq09:20:133
9212992540,253cyclictest31697-21kworker/u16:3+efi_rts_wq11:55:131
9211992540,253cyclictest15625-21kworker/u16:1+efi_rts_wq10:40:120
9212992530,252cyclictest15625-21kworker/u16:1+efi_rts_wq09:35:141
9212992530,252cyclictest15625-21kworker/u16:1+efi_rts_wq08:50:131
9214992520,251cyclictest31697-21kworker/u16:3+efi_rts_wq12:28:333
9214992520,251cyclictest16436-21kworker/u16:3+efi_rts_wq10:08:063
9212992520,251cyclictest15625-21kworker/u16:1+efi_rts_wq08:10:141
9211992520,251cyclictest31697-21kworker/u16:3+efi_rts_wq12:03:280
9213992510,250cyclictest32640-21kworker/u16:2+efi_rts_wq11:20:132
9212992500,249cyclictest16436-21kworker/u16:3+efi_rts_wq10:05:131
9212992500,248cyclictest15625-21kworker/u16:1+efi_rts_wq09:30:131
9212992470,246cyclictest8251-21kworker/u16:0+efi_rts_wq11:30:141
9211992470,246cyclictest31697-21kworker/u16:3+efi_rts_wq12:35:120
9214992450,244cyclictest31697-21kworker/u16:3+efi_rts_wq11:55:133
9212992450,244cyclictest15625-21kworker/u16:1+efi_rts_wq10:20:151
9212992430,242cyclictest15625-21kworker/u16:1+efi_rts_wq08:05:131
9212992420,241cyclictest15625-21kworker/u16:1+efi_rts_wq08:22:481
9211992410,240cyclictest16436-21kworker/u16:3+efi_rts_wq10:05:120
9213992400,239cyclictest16436-21kworker/u16:3+efi_rts_wq07:30:122
9212992390,238cyclictest8251-21kworker/u16:0+efi_rts_wq11:28:211
9212992390,238cyclictest15625-21kworker/u16:1+efi_rts_wq07:42:401
9212992380,237cyclictest15625-21kworker/u16:1+efi_rts_wq08:17:451
9212992380,236cyclictest32640-21kworker/u16:2+efi_rts_wq10:50:131
9214992370,236cyclictest8251-21kworker/u16:0+efi_rts_wq12:10:103
9211992370,236cyclictest8251-21kworker/u16:0+efi_rts_wq11:25:120
9213992300,229cyclictest32640-21kworker/u16:2+efi_rts_wq11:13:192
9214992290,228cyclictest16436-21kworker/u16:3+efi_rts_wq07:27:393
9211992270,226cyclictest16436-21kworker/u16:3+efi_rts_wq09:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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