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2026-08-14 - 13:15

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 Fri Aug 14, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11622316309,4sleep00-21swapper/019:06:470
11382316303,4sleep10-21swapper/119:06:281
11182316308,5sleep30-21swapper/319:06:133
11742315308,5sleep20-21swapper/219:06:572
1679992970,296cyclictest6884-21kworker/u16:0+efi_rts_wq21:00:111
1681992950,294cyclictest6884-21kworker/u16:0+efi_rts_wq22:25:123
1681992950,294cyclictest6884-21kworker/u16:0+efi_rts_wq20:35:043
1678992950,293cyclictest28674-21kworker/u16:1+efi_rts_wq23:00:120
1681992940,293cyclictest6884-21kworker/u16:0+efi_rts_wq19:30:133
1681992940,293cyclictest20313-21kworker/u16:2+efi_rts_wq20:55:093
1681992930,292cyclictest20313-21kworker/u16:2+efi_rts_wq21:55:153
1681992920,291cyclictest6884-21kworker/u16:0+efi_rts_wq21:45:193
1679992920,291cyclictest9029-21kworker/u16:2+efi_rts_wq00:15:461
1679992920,291cyclictest6884-21kworker/u16:0+efi_rts_wq21:05:141
1679992920,291cyclictest20313-21kworker/u16:2+efi_rts_wq20:04:581
1678992920,291cyclictest6884-21kworker/u16:0+efi_rts_wq20:50:120
1678992920,291cyclictest20313-21kworker/u16:2+efi_rts_wq19:50:120
1678992920,291cyclictest15690-21kworker/u16:3+efi_rts_wq00:20:130
1681992910,290cyclictest28674-21kworker/u16:1+efi_rts_wq23:05:123
1680992910,290cyclictest9029-21kworker/u16:2+efi_rts_wq23:35:122
1679992900,289cyclictest20313-21kworker/u16:2+efi_rts_wq22:55:321
1679992900,289cyclictest20313-21kworker/u16:2+efi_rts_wq19:25:131
1678992900,289cyclictest6884-21kworker/u16:0+efi_rts_wq19:24:510
1681992890,288cyclictest15690-21kworker/u16:3+efi_rts_wq00:35:133
1680992890,288cyclictest9029-21kworker/u16:2+efi_rts_wq00:25:142
1681992880,287cyclictest9029-21kworker/u16:2+efi_rts_wq23:20:133
1680992880,287cyclictest20313-21kworker/u16:2+efi_rts_wq22:10:132
1680992880,287cyclictest20313-21kworker/u16:2+efi_rts_wq21:05:112
1679992880,287cyclictest6884-21kworker/u16:0+efi_rts_wq22:25:111
1681992860,285cyclictest15690-21kworker/u16:3+efi_rts_wq23:45:133
1679992860,285cyclictest20313-21kworker/u16:2+efi_rts_wq20:15:131
1681992850,284cyclictest6884-21kworker/u16:0+efi_rts_wq20:50:123
1681992840,283cyclictest6884-21kworker/u16:0+efi_rts_wq21:20:123
1680992840,283cyclictest6884-21kworker/u16:0+efi_rts_wq21:45:152
1679992820,281cyclictest20313-21kworker/u16:2+efi_rts_wq20:10:121
1678992810,280cyclictest20313-21kworker/u16:2+efi_rts_wq22:50:130
1681992800,279cyclictest20313-21kworker/u16:2+efi_rts_wq21:50:153
1678992800,279cyclictest20313-21kworker/u16:2+efi_rts_wq21:55:140
1678992790,278cyclictest20313-21kworker/u16:2+efi_rts_wq20:45:140
1681992780,277cyclictest6884-21kworker/u16:0+efi_rts_wq19:10:133
1681992780,277cyclictest20313-21kworker/u16:2+efi_rts_wq22:50:133
1679992780,277cyclictest6884-21kworker/u16:0+efi_rts_wq20:55:121
1678992780,277cyclictest6884-21kworker/u16:0+efi_rts_wq21:20:130
1681992770,274cyclictest9029-21kworker/u16:2+efi_rts_wq00:30:133
1680992770,274cyclictest6884-21kworker/u16:0+efi_rts_wq20:05:102
1678992770,276cyclictest6884-21kworker/u16:0+efi_rts_wq22:15:250
1679992750,274cyclictest6884-21kworker/u16:0+efi_rts_wq19:10:131
1681992740,273cyclictest6884-21kworker/u16:0+efi_rts_wq19:45:133
1679992740,273cyclictest20313-21kworker/u16:2+efi_rts_wq19:15:021
1679992710,270cyclictest6884-21kworker/u16:0+efi_rts_wq20:25:121
1678992710,270cyclictest6884-21kworker/u16:0+efi_rts_wq22:05:130
1680992700,269cyclictest9029-21kworker/u16:2+efi_rts_wq00:00:132
1680992700,269cyclictest20313-21kworker/u16:2+efi_rts_wq19:34:522
1678992700,269cyclictest6884-21kworker/u16:0+efi_rts_wq21:35:170
1678992700,269cyclictest6884-21kworker/u16:0+efi_rts_wq21:30:140
1678992700,269cyclictest28674-21kworker/u16:1+efi_rts_wq23:05:340
1680992690,268cyclictest28674-21kworker/u16:1+efi_rts_wq23:00:332
1678992670,266cyclictest6884-21kworker/u16:0+efi_rts_wq20:30:030
1681992650,264cyclictest20313-21kworker/u16:2+efi_rts_wq22:10:233
1679992630,262cyclictest6884-21kworker/u16:0+efi_rts_wq21:35:131
1679992630,262cyclictest6884-21kworker/u16:0+efi_rts_wq19:59:571
1681992610,260cyclictest6884-21kworker/u16:0+efi_rts_wq19:55:123
1680992610,260cyclictest20313-21kworker/u16:2+efi_rts_wq20:35:132
1681992600,259cyclictest15690-21kworker/u16:3+efi_rts_wq00:20:473
1680992600,258cyclictest9029-21kworker/u16:2+efi_rts_wq23:30:132
1678992600,258cyclictest6884-21kworker/u16:0+efi_rts_wq19:55:120
1681992590,258cyclictest20313-21kworker/u16:2+efi_rts_wq22:55:123
1678992590,258cyclictest15690-21kworker/u16:3+efi_rts_wq00:10:120
1678992590,258cyclictest15690-21kworker/u16:3+efi_rts_wq00:10:120
1680992570,256cyclictest6884-21kworker/u16:0+efi_rts_wq21:25:152
1679992570,256cyclictest20313-21kworker/u16:2+efi_rts_wq21:40:141
1681992560,255cyclictest6884-21kworker/u16:0+efi_rts_wq20:20:123
1678992560,255cyclictest9029-21kworker/u16:2+efi_rts_wq00:05:160
1678992560,255cyclictest6884-21kworker/u16:0+efi_rts_wq20:25:020
1678992550,254cyclictest20313-21kworker/u16:2+efi_rts_wq21:25:150
1678992550,254cyclictest20313-21kworker/u16:2+efi_rts_wq20:40:060
1678992540,253cyclictest20313-21kworker/u16:2+efi_rts_wq19:40:110
1678992530,252cyclictest3937-21kworker/u16:3+efi_rts_wq23:10:130
1680992520,251cyclictest9029-21kworker/u16:2+efi_rts_wq23:15:362
1680992510,250cyclictest20313-21kworker/u16:2+efi_rts_wq21:15:132
1679992490,248cyclictest6884-21kworker/u16:0+efi_rts_wq21:45:151
1678992490,248cyclictest20313-21kworker/u16:2+efi_rts_wq19:29:510
1678992460,244cyclictest9029-21kworker/u16:2+efi_rts_wq23:50:110
1681992430,241cyclictest9029-21kworker/u16:2+efi_rts_wq23:40:123
1681992430,241cyclictest28674-21kworker/u16:1+efi_rts_wq22:45:143
1679992430,242cyclictest9029-21kworker/u16:2+efi_rts_wq00:25:461
1678992430,242cyclictest15690-21kworker/u16:3+efi_rts_wq23:55:100
1678992420,241cyclictest9029-21kworker/u16:2+efi_rts_wq23:35:380
1678992420,241cyclictest6884-21kworker/u16:0+efi_rts_wq20:05:100
1678992420,240cyclictest6884-21kworker/u16:0+efi_rts_wq22:30:130
1679992410,239cyclictest15690-21kworker/u16:3+efi_rts_wq23:55:101
1681992380,237cyclictest15690-21kworker/u16:3+efi_rts_wq00:10:113
1681992380,237cyclictest15690-21kworker/u16:3+efi_rts_wq00:10:113
1678992380,237cyclictest20313-21kworker/u16:2+efi_rts_wq19:15:010
1680992370,236cyclictest6884-21kworker/u16:0+efi_rts_wq19:20:132
1678992370,236cyclictest6884-21kworker/u16:0+efi_rts_wq21:05:140
1681992360,235cyclictest20313-21kworker/u16:2+efi_rts_wq21:10:143
1679992350,234cyclictest11730-21kworker/u16:0+efi_rts_wq23:20:371
1680992330,232cyclictest6884-21kworker/u16:0+efi_rts_wq21:30:142
1678992330,232cyclictest20313-21kworker/u16:2+efi_rts_wq21:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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