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2026-05-20 - 18:14

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 Wed May 20, 2026 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65992320313,5sleep20-21swapper/207:07:292
66992319311,5sleep30-21swapper/307:08:473
67642316302,11sleep10-21swapper/107:09:361
65652314308,4sleep00-21swapper/007:07:020
7057993121,308cyclictest16968-21kworker/u16:1+efi_rts_wq11:30:120
7060993010,299cyclictest22461-21kworker/u16:0+efi_rts_wq10:50:133
7057993010,300cyclictest9916-21kworker/u16:2+efi_rts_wq09:05:130
7059992980,297cyclictest31987-21kworker/u16:1+efi_rts_wq08:45:122
7057992980,297cyclictest9916-21kworker/u16:2+efi_rts_wq10:10:110
7060992970,296cyclictest9916-21kworker/u16:2+efi_rts_wq09:30:133
7059992970,296cyclictest31987-21kworker/u16:1+efi_rts_wq09:35:132
7058992970,296cyclictest31987-21kworker/u16:1+efi_rts_wq10:00:111
7058992960,295cyclictest9916-21kworker/u16:2+efi_rts_wq07:15:001
7058992940,293cyclictest6784-21kworker/u16:2+efi_rts_wq11:02:021
7057992940,293cyclictest9916-21kworker/u16:2+efi_rts_wq09:15:120
7058992930,292cyclictest29252-21kworker/u16:1+efi_rts_wq12:10:131
7057992900,289cyclictest21877-21kworker/u16:3+efi_rts_wq11:25:130
7059992890,287cyclictest16968-21kworker/u16:1+efi_rts_wq11:30:122
7058992890,288cyclictest9916-21kworker/u16:2+efi_rts_wq08:40:141
7058992890,288cyclictest9916-21kworker/u16:2+efi_rts_wq07:40:131
7058992890,288cyclictest29252-21kworker/u16:1+efi_rts_wq12:35:131
7058992890,288cyclictest26937-21kworker/u16:0+efi_rts_wq11:55:121
7057992890,288cyclictest9916-21kworker/u16:2+efi_rts_wq08:25:130
7057992890,288cyclictest31987-21kworker/u16:1+efi_rts_wq10:26:560
7060992880,287cyclictest9916-21kworker/u16:2+efi_rts_wq09:51:493
7057992860,285cyclictest6784-21kworker/u16:2+efi_rts_wq10:55:130
7060992850,284cyclictest9916-21kworker/u16:2+efi_rts_wq07:35:123
7060992850,284cyclictest26937-21kworker/u16:0+efi_rts_wq12:00:133
7059992830,282cyclictest9916-21kworker/u16:2+efi_rts_wq07:15:132
7059992830,282cyclictest31987-21kworker/u16:1+efi_rts_wq10:25:122
7060992820,281cyclictest9916-21kworker/u16:2+efi_rts_wq08:15:123
7057992820,281cyclictest26937-21kworker/u16:0+efi_rts_wq12:00:120
7060992810,280cyclictest9916-21kworker/u16:2+efi_rts_wq09:10:123
7059992810,280cyclictest22461-21kworker/u16:0+efi_rts_wq11:00:142
7057992810,280cyclictest9916-21kworker/u16:2+efi_rts_wq09:40:120
7057992810,278cyclictest9916-21kworker/u16:2+efi_rts_wq10:05:110
7057992800,279cyclictest31987-21kworker/u16:1+efi_rts_wq09:00:140
7059992790,278cyclictest31987-21kworker/u16:1+efi_rts_wq08:16:302
7060992780,277cyclictest9916-21kworker/u16:2+efi_rts_wq09:55:113
7060992780,277cyclictest9916-21kworker/u16:2+efi_rts_wq08:05:123
7059992780,277cyclictest9916-21kworker/u16:2+efi_rts_wq07:10:152
7060992770,276cyclictest31987-21kworker/u16:1+efi_rts_wq09:25:113
7058992770,276cyclictest31987-21kworker/u16:1+efi_rts_wq08:50:141
7058992770,275cyclictest6784-21kworker/u16:2+efi_rts_wq10:55:131
7059992740,273cyclictest31987-21kworker/u16:1+efi_rts_wq08:21:322
7058992740,273cyclictest22461-21kworker/u16:0+efi_rts_wq11:15:121
7058992730,272cyclictest9916-21kworker/u16:2+efi_rts_wq07:10:151
7057992730,272cyclictest29252-21kworker/u16:1+efi_rts_wq11:45:110
7060992720,271cyclictest31987-21kworker/u16:1+efi_rts_wq10:00:123
7058992720,271cyclictest9916-21kworker/u16:2+efi_rts_wq09:50:111
7058992710,270cyclictest26937-21kworker/u16:0+efi_rts_wq12:07:161
7060992700,269cyclictest9916-21kworker/u16:2+efi_rts_wq10:30:123
7060992700,269cyclictest22461-21kworker/u16:0+efi_rts_wq10:45:113
7060992690,268cyclictest26937-21kworker/u16:0+efi_rts_wq12:25:123
7060992670,266cyclictest26937-21kworker/u16:0+efi_rts_wq12:05:123
7058992660,265cyclictest21877-21kworker/u16:3+efi_rts_wq11:35:131
7058992660,265cyclictest21877-21kworker/u16:3+efi_rts_wq11:35:121
7060992610,260cyclictest31987-21kworker/u16:1+efi_rts_wq10:06:513
7059992610,260cyclictest22461-21kworker/u16:0+efi_rts_wq10:50:122
7058992600,259cyclictest31987-21kworker/u16:1+efi_rts_wq09:45:131
7058992590,258cyclictest22461-21kworker/u16:0+efi_rts_wq11:05:141
7060992580,257cyclictest26937-21kworker/u16:0+efi_rts_wq11:40:133
7057992580,257cyclictest9916-21kworker/u16:2+efi_rts_wq10:20:130
7060992560,255cyclictest31987-21kworker/u16:1+efi_rts_wq09:20:113
7058992560,255cyclictest19430-21kworker/u16:2+efi_rts_wq11:20:121
7060992550,254cyclictest31987-21kworker/u16:1+efi_rts_wq08:10:133
7059992550,254cyclictest22461-21kworker/u16:0+efi_rts_wq11:05:142
7059992550,253cyclictest22461-21kworker/u16:0+efi_rts_wq10:35:112
7057992540,253cyclictest22461-21kworker/u16:0+efi_rts_wq11:22:070
7060992530,252cyclictest9916-21kworker/u16:2+efi_rts_wq09:15:113
7059992530,252cyclictest22461-21kworker/u16:0+efi_rts_wq10:40:112
7058992530,252cyclictest9916-21kworker/u16:2+efi_rts_wq10:21:541
7057992520,251cyclictest31987-21kworker/u16:1+efi_rts_wq07:30:130
7058992510,250cyclictest31987-21kworker/u16:1+efi_rts_wq08:00:121
7057992500,249cyclictest26937-21kworker/u16:0+efi_rts_wq11:40:130
7060992490,248cyclictest31987-21kworker/u16:1+efi_rts_wq07:50:123
7058992480,247cyclictest22461-21kworker/u16:0+efi_rts_wq11:10:131
7058992470,245cyclictest22461-21kworker/u16:0+efi_rts_wq10:45:131
7058992460,245cyclictest9916-21kworker/u16:2+efi_rts_wq07:56:261
7057992460,245cyclictest9916-21kworker/u16:2+efi_rts_wq07:41:240
7057992440,243cyclictest29252-21kworker/u16:1+efi_rts_wq11:50:110
7057992440,243cyclictest22461-21kworker/u16:0+efi_rts_wq11:15:130
7060992430,242cyclictest31987-21kworker/u16:1+efi_rts_wq10:36:573
7057992420,241cyclictest31987-21kworker/u16:1+efi_rts_wq07:46:240
7058992410,240cyclictest26937-21kworker/u16:0+efi_rts_wq11:40:131
7060992400,239cyclictest31987-21kworker/u16:1+efi_rts_wq07:20:123
7060992390,238cyclictest29252-21kworker/u16:1+efi_rts_wq11:50:113
7058992390,238cyclictest31987-21kworker/u16:1+efi_rts_wq09:01:401
7058992390,238cyclictest26937-21kworker/u16:0+efi_rts_wq12:15:111
7057992340,233cyclictest29252-21kworker/u16:1+efi_rts_wq12:20:110
7060992320,230cyclictest22461-21kworker/u16:0+efi_rts_wq11:10:133
7059992290,228cyclictest26937-21kworker/u16:0+efi_rts_wq12:00:132
7057992250,224cyclictest31987-21kworker/u16:1+efi_rts_wq09:26:430
7058992240,223cyclictest31987-21kworker/u16:1+efi_rts_wq09:36:451
7058992230,222cyclictest31987-21kworker/u16:1+efi_rts_wq10:15:121
7058992230,222cyclictest29252-21kworker/u16:1+efi_rts_wq12:30:111
7058992220,221cyclictest31987-21kworker/u16:1+efi_rts_wq08:10:131
7058992210,220cyclictest31987-21kworker/u16:1+efi_rts_wq09:06:391
7060992200,219cyclictest31987-21kworker/u16:1+efi_rts_wq07:45:133
7058992200,219cyclictest9916-21kworker/u16:2+efi_rts_wq09:10:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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