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2026-08-20 - 12:11

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 Thu Aug 20, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85492337314,5sleep20-21swapper/219:07:042
84702324312,10sleep00-21swapper/019:06:010
85402318310,5sleep30-21swapper/319:06:563
84912314306,5sleep10-21swapper/119:06:181
9046992990,298cyclictest1665-21kworker/u16:2+efi_rts_wq00:25:123
9046992990,298cyclictest13984-21kworker/u16:1+efi_rts_wq21:25:133
9046992980,297cyclictest13984-21kworker/u16:1+efi_rts_wq19:13:593
9043992980,297cyclictest1113-21kworker/u16:3+efi_rts_wq23:10:120
9044992970,296cyclictest13984-21kworker/u16:1+efi_rts_wq19:15:121
9044992940,293cyclictest13984-21kworker/u16:1+efi_rts_wq20:35:121
9046992930,292cyclictest1665-21kworker/u16:2+efi_rts_wq23:55:133
9046992930,292cyclictest1113-21kworker/u16:3+efi_rts_wq19:30:113
9044992930,292cyclictest1665-21kworker/u16:2+efi_rts_wq00:35:121
9044992930,292cyclictest13984-21kworker/u16:1+efi_rts_wq22:55:131
9044992920,291cyclictest1113-21kworker/u16:3+efi_rts_wq20:24:111
9046992910,290cyclictest1665-21kworker/u16:2+efi_rts_wq00:16:203
9043992910,290cyclictest1113-21kworker/u16:3+efi_rts_wq21:20:140
9044992900,289cyclictest1113-21kworker/u16:3+efi_rts_wq20:45:111
9043992890,287cyclictest13984-21kworker/u16:1+efi_rts_wq22:45:140
9046992880,287cyclictest13984-21kworker/u16:1+efi_rts_wq23:24:483
9046992870,285cyclictest13984-21kworker/u16:1+efi_rts_wq23:00:123
9044992860,285cyclictest13984-21kworker/u16:1+efi_rts_wq22:30:131
9046992850,284cyclictest13984-21kworker/u16:1+efi_rts_wq22:55:133
9045992850,283cyclictest13984-21kworker/u16:1+efi_rts_wq00:10:122
9044992850,284cyclictest1113-21kworker/u16:3+efi_rts_wq21:35:131
9044992840,283cyclictest1113-21kworker/u16:3+efi_rts_wq23:10:121
9044992840,281cyclictest13984-21kworker/u16:1+efi_rts_wq21:00:131
9043992840,282cyclictest13984-21kworker/u16:1+efi_rts_wq00:20:120
9046992830,282cyclictest13984-21kworker/u16:1+efi_rts_wq23:25:123
9046992830,282cyclictest13984-21kworker/u16:1+efi_rts_wq21:50:133
9046992830,282cyclictest13984-21kworker/u16:1+efi_rts_wq21:50:133
9044992830,282cyclictest13984-21kworker/u16:1+efi_rts_wq23:40:141
9046992820,281cyclictest13984-21kworker/u16:1+efi_rts_wq21:44:273
9043992820,281cyclictest13984-21kworker/u16:1+efi_rts_wq00:30:140
9043992820,280cyclictest13984-21kworker/u16:1+efi_rts_wq22:30:130
9043992790,278cyclictest13984-21kworker/u16:1+efi_rts_wq23:19:470
9044992780,277cyclictest1113-21kworker/u16:3+efi_rts_wq20:14:091
9043992760,275cyclictest1113-21kworker/u16:3+efi_rts_wq20:10:130
9044992750,274cyclictest13984-21kworker/u16:1+efi_rts_wq22:20:121
9046992740,273cyclictest1113-21kworker/u16:3+efi_rts_wq19:24:003
9043992740,273cyclictest1113-21kworker/u16:3+efi_rts_wq22:25:110
9045992730,272cyclictest1113-21kworker/u16:3+efi_rts_wq21:59:312
9044992730,272cyclictest1113-21kworker/u16:3+efi_rts_wq22:15:121
9044992730,270cyclictest1113-21kworker/u16:3+efi_rts_wq19:35:121
9044992720,271cyclictest1665-21kworker/u16:2+efi_rts_wq00:26:221
9044992710,270cyclictest13984-21kworker/u16:1+efi_rts_wq23:25:121
9046992690,268cyclictest13984-21kworker/u16:1+efi_rts_wq20:40:123
9044992680,267cyclictest1113-21kworker/u16:3+efi_rts_wq21:45:101
9045992670,266cyclictest1113-21kworker/u16:3+efi_rts_wq19:50:122
9046992660,265cyclictest13984-21kworker/u16:1+efi_rts_wq19:40:113
9046992660,265cyclictest13984-21kworker/u16:1+efi_rts_wq19:25:133
9045992660,265cyclictest13984-21kworker/u16:1+efi_rts_wq00:30:142
9045992660,265cyclictest1113-21kworker/u16:3+efi_rts_wq22:40:102
9044992650,264cyclictest13984-21kworker/u16:1+efi_rts_wq23:05:121
9046992640,263cyclictest1113-21kworker/u16:3+efi_rts_wq21:20:143
9045992640,263cyclictest13984-21kworker/u16:1+efi_rts_wq00:00:152
9044992640,263cyclictest13984-21kworker/u16:1+efi_rts_wq20:30:111
9045992620,260cyclictest1113-21kworker/u16:3+efi_rts_wq23:45:122
9044992590,258cyclictest13984-21kworker/u16:1+efi_rts_wq22:10:131
9044992580,257cyclictest13984-21kworker/u16:1+efi_rts_wq22:45:141
9043992580,255cyclictest13984-21kworker/u16:1+efi_rts_wq20:05:120
9046992560,253cyclictest13984-21kworker/u16:1+efi_rts_wq20:25:133
9045992560,255cyclictest1113-21kworker/u16:3+efi_rts_wq22:35:142
9046992550,254cyclictest1113-21kworker/u16:3+efi_rts_wq22:15:123
9046992550,254cyclictest1113-21kworker/u16:3+efi_rts_wq21:10:133
9044992550,254cyclictest1113-21kworker/u16:3+efi_rts_wq22:25:111
9046992540,253cyclictest13984-21kworker/u16:1+efi_rts_wq19:49:053
9046992540,253cyclictest1113-21kworker/u16:3+efi_rts_wq21:39:263
9044992530,252cyclictest13984-21kworker/u16:1+efi_rts_wq21:50:131
9044992530,252cyclictest13984-21kworker/u16:1+efi_rts_wq21:50:131
9046992520,251cyclictest13984-21kworker/u16:1+efi_rts_wq22:34:393
9046992520,250cyclictest1113-21kworker/u16:3+efi_rts_wq23:35:123
9046992490,248cyclictest13984-21kworker/u16:1+efi_rts_wq22:04:323
9044992490,248cyclictest1665-21kworker/u16:2+efi_rts_wq00:15:111
9043992480,245cyclictest13984-21kworker/u16:1+efi_rts_wq21:50:130
9043992480,245cyclictest13984-21kworker/u16:1+efi_rts_wq21:50:130
9046992470,244cyclictest13984-21kworker/u16:1+efi_rts_wq22:05:133
9046992440,243cyclictest1113-21kworker/u16:3+efi_rts_wq20:00:153
9045992440,243cyclictest13984-21kworker/u16:1+efi_rts_wq20:54:182
9045992420,241cyclictest1113-21kworker/u16:3+efi_rts_wq19:55:112
9045992410,240cyclictest1113-21kworker/u16:3+efi_rts_wq23:30:102
9046992370,236cyclictest1113-21kworker/u16:3+efi_rts_wq22:50:143
9046992360,235cyclictest13984-21kworker/u16:1+efi_rts_wq21:15:123
9044992360,235cyclictest1113-21kworker/u16:3+efi_rts_wq20:55:121
9043992360,235cyclictest13984-21kworker/u16:1+efi_rts_wq19:10:160
9043992350,234cyclictest13984-21kworker/u16:1+efi_rts_wq23:05:120
9045992330,232cyclictest1665-21kworker/u16:2+efi_rts_wq00:35:122
9046992310,230cyclictest13984-21kworker/u16:1+efi_rts_wq19:15:013
9046992310,230cyclictest1113-21kworker/u16:3+efi_rts_wq19:35:123
9044992310,230cyclictest13984-21kworker/u16:1+efi_rts_wq21:29:241
9046992300,229cyclictest13984-21kworker/u16:1+efi_rts_wq23:46:153
9046992250,223cyclictest1665-21kworker/u16:2+efi_rts_wq23:50:133
9046992240,223cyclictest13984-21kworker/u16:1+efi_rts_wq22:39:393
9044992230,222cyclictest13984-21kworker/u16:1+efi_rts_wq19:40:111
9045992210,220cyclictest13984-21kworker/u16:1+efi_rts_wq23:00:122
9044992210,220cyclictest1113-21kworker/u16:3+efi_rts_wq23:30:091
9043992210,220cyclictest13984-21kworker/u16:1+efi_rts_wq22:44:400
9046992200,219cyclictest1113-21kworker/u16:3+efi_rts_wq21:30:133
9045992200,219cyclictest1113-21kworker/u16:3+efi_rts_wq23:35:122
9044992200,219cyclictest1113-21kworker/u16:3+efi_rts_wq21:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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