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2026-06-29 - 13:36

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 Mon Jun 29, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208532320307,4sleep20-21swapper/219:05:322
208892317310,5sleep30-21swapper/319:06:013
211502315307,5sleep10-21swapper/119:09:191
209432314306,5sleep00-21swapper/019:06:430
21467993040,301cyclictest22517-21kworker/u16:0+efi_rts_wq00:20:120
21467993040,301cyclictest22517-21kworker/u16:0+efi_rts_wq00:20:110
21470992990,298cyclictest3732-21kworker/u16:1+efi_rts_wq22:30:143
21467992990,298cyclictest13990-21kworker/u16:3+efi_rts_wq20:09:290
21468992980,297cyclictest13990-21kworker/u16:3+efi_rts_wq21:39:431
21468992970,296cyclictest3110-21kworker/u16:0+efi_rts_wq19:50:141
21467992970,296cyclictest667-21kworker/u16:2+efi_rts_wq22:49:570
21467992960,293cyclictest21314-21kworker/u16:3+efi_rts_wq19:25:130
21470992940,293cyclictest22517-21kworker/u16:0+efi_rts_wq00:15:133
21468992930,292cyclictest32295-21kworker/u16:3+efi_rts_wq23:35:141
21470992920,291cyclictest18997-21kworker/u16:2+efi_rts_wq19:20:143
21469992910,290cyclictest22517-21kworker/u16:0+efi_rts_wq23:51:052
21469992910,290cyclictest18997-21kworker/u16:2+efi_rts_wq19:10:132
21468992910,290cyclictest22517-21kworker/u16:0+efi_rts_wq23:50:131
21470992890,288cyclictest667-21kworker/u16:2+efi_rts_wq22:20:133
21468992890,287cyclictest667-21kworker/u16:2+efi_rts_wq23:00:141
21467992890,288cyclictest8065-21kworker/u16:4+efi_rts_wq23:40:130
21469992880,287cyclictest18997-21kworker/u16:2+efi_rts_wq19:55:122
21470992870,286cyclictest8065-21kworker/u16:4+efi_rts_wq23:45:133
21468992860,284cyclictest32295-21kworker/u16:3+efi_rts_wq23:55:121
21467992860,285cyclictest4642-21kworker/u16:0+efi_rts_wq21:20:140
21467992860,285cyclictest22517-21kworker/u16:0+efi_rts_wq23:20:120
21469992850,284cyclictest13990-21kworker/u16:3+efi_rts_wq20:30:132
21470992840,283cyclictest13990-21kworker/u16:3+efi_rts_wq21:25:143
21468992840,283cyclictest3110-21kworker/u16:0+efi_rts_wq20:05:121
21467992840,283cyclictest22104-21kworker/u16:1+efi_rts_wq21:55:130
21468992830,282cyclictest32196-21kworker/u16:4+efi_rts_wq19:44:251
21468992830,282cyclictest18997-21kworker/u16:2+efi_rts_wq19:10:131
21468992820,281cyclictest32295-21kworker/u16:3+efi_rts_wq00:10:141
21467992820,281cyclictest667-21kworker/u16:2+efi_rts_wq22:35:150
21470992810,280cyclictest27869-21kworker/u16:3+efi_rts_wq22:05:143
21470992810,280cyclictest18200-21kworker/u16:2+efi_rts_wq00:11:103
21468992810,280cyclictest667-21kworker/u16:2+efi_rts_wq23:25:121
21468992810,280cyclictest18997-21kworker/u16:2+efi_rts_wq19:30:131
21470992800,278cyclictest13990-21kworker/u16:3+efi_rts_wq21:09:393
21470992790,278cyclictest26779-21kworker/u16:4+efi_rts_wq20:44:343
21469992790,278cyclictest26779-21kworker/u16:4+efi_rts_wq20:50:132
21467992790,278cyclictest13990-21kworker/u16:3+efi_rts_wq21:30:140
21470992750,274cyclictest18997-21kworker/u16:2+efi_rts_wq19:55:123
21470992740,273cyclictest18997-21kworker/u16:2+efi_rts_wq19:19:203
21469992730,272cyclictest29498-21kworker/u16:1+efi_rts_wq00:25:132
21469992730,272cyclictest29498-21kworker/u16:1+efi_rts_wq00:25:122
21467992730,272cyclictest18997-21kworker/u16:2+efi_rts_wq19:35:140
21468992710,270cyclictest667-21kworker/u16:2+efi_rts_wq22:55:111
21469992700,268cyclictest667-21kworker/u16:2+efi_rts_wq23:05:002
21467992700,269cyclictest4642-21kworker/u16:0+efi_rts_wq21:15:130
21467992700,269cyclictest18039-21kworker/u16:1+efi_rts_wq20:35:130
21470992690,268cyclictest32295-21kworker/u16:3+efi_rts_wq23:55:133
21467992660,265cyclictest667-21kworker/u16:2+efi_rts_wq22:19:520
21468992640,262cyclictest8065-21kworker/u16:4+efi_rts_wq23:10:131
21470992630,262cyclictest32196-21kworker/u16:4+efi_rts_wq19:40:123
21470992620,261cyclictest18039-21kworker/u16:1+efi_rts_wq21:00:133
21467992620,261cyclictest3110-21kworker/u16:0+efi_rts_wq20:00:130
21467992620,261cyclictest13990-21kworker/u16:3+efi_rts_wq21:25:130
21470992560,255cyclictest25752-21kworker/u16:1+efi_rts_wq19:29:213
21468992550,254cyclictest667-21kworker/u16:2+efi_rts_wq22:40:131
21470992540,253cyclictest8065-21kworker/u16:4+efi_rts_wq00:30:133
21469992540,253cyclictest18039-21kworker/u16:1+efi_rts_wq20:55:132
21467992540,253cyclictest18039-21kworker/u16:1+efi_rts_wq20:40:120
21470992530,252cyclictest14867-21kworker/u16:1+efi_rts_wq22:44:563
21467992530,252cyclictest8065-21kworker/u16:4+efi_rts_wq23:10:130
21468992520,251cyclictest18997-21kworker/u16:2+efi_rts_wq19:15:111
21468992520,251cyclictest18039-21kworker/u16:1+efi_rts_wq20:34:331
21467992510,250cyclictest22517-21kworker/u16:0+efi_rts_wq23:46:030
21469992500,249cyclictest15032-21kworker/u16:4+efi_rts_wq21:55:122
21468992500,249cyclictest18200-21kworker/u16:2+efi_rts_wq00:05:111
21467992490,248cyclictest667-21kworker/u16:2+efi_rts_wq23:30:130
21469992460,245cyclictest13990-21kworker/u16:3+efi_rts_wq21:30:142
21467992460,245cyclictest667-21kworker/u16:2+efi_rts_wq22:25:130
21467992460,245cyclictest667-21kworker/u16:2+efi_rts_wq21:40:140
21470992450,244cyclictest4642-21kworker/u16:0+efi_rts_wq21:10:133
21470992410,240cyclictest667-21kworker/u16:2+efi_rts_wq21:45:143
21468992410,240cyclictest3110-21kworker/u16:0+efi_rts_wq20:20:131
21467992400,239cyclictest667-21kworker/u16:2+efi_rts_wq23:00:140
21468992390,238cyclictest3110-21kworker/u16:0+efi_rts_wq20:10:141
21467992380,237cyclictest667-21kworker/u16:2+efi_rts_wq21:50:120
21468992330,232cyclictest18039-21kworker/u16:1+efi_rts_wq20:25:121
21467992320,231cyclictest667-21kworker/u16:2+efi_rts_wq21:35:130
21467992310,230cyclictest14867-21kworker/u16:1+efi_rts_wq23:15:130
21468992300,229cyclictest8065-21kworker/u16:4+efi_rts_wq00:31:141
21470992280,227cyclictest667-21kworker/u16:2+efi_rts_wq22:35:143
21470992280,227cyclictest14867-21kworker/u16:1+efi_rts_wq23:15:143
21467992270,226cyclictest13990-21kworker/u16:3+efi_rts_wq20:30:120
21468992260,225cyclictest18200-21kworker/u16:2+efi_rts_wq00:00:131
21468992240,223cyclictest667-21kworker/u16:2+efi_rts_wq22:45:121
21468992230,220cyclictest667-21kworker/u16:2+efi_rts_wq21:50:121
21469992220,221cyclictest22517-21kworker/u16:0+efi_rts_wq23:05:122
21467992210,220cyclictest26779-21kworker/u16:4+efi_rts_wq20:49:350
21467992210,220cyclictest22104-21kworker/u16:1+efi_rts_wq22:00:140
21469992200,219cyclictest1440-21kworker/u16:2+efi_rts_wq00:36:142
21468992200,219cyclictest26779-21kworker/u16:4+efi_rts_wq20:59:351
21468992160,215cyclictest667-21kworker/u16:2+efi_rts_wq22:50:121
21468992160,215cyclictest667-21kworker/u16:2+efi_rts_wq21:45:131
21468992150,214cyclictest3110-21kworker/u16:0+efi_rts_wq20:15:121
21467992150,214cyclictest18039-21kworker/u16:1+efi_rts_wq20:24:310
21468992110,208cyclictest13990-21kworker/u16:3+efi_rts_wq21:15:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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