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2026-08-08 - 13:23

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 Aug 08, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
50962330303,24sleep10-21swapper/119:08:031
51332316308,5sleep30-21swapper/319:08:343
50172314306,5sleep00-21swapper/019:07:020
49152313306,4sleep20-21swapper/219:05:452
5508993000,299cyclictest1754-21kworker/u16:2+efi_rts_wq22:15:140
5509992990,298cyclictest21396-21kworker/u16:1+efi_rts_wq23:40:131
5509992990,298cyclictest12341-21kworker/u16:0+efi_rts_wq23:55:121
5511992940,293cyclictest12341-21kworker/u16:0+efi_rts_wq23:16:013
5510992940,293cyclictest22121-21kworker/u16:3+efi_rts_wq21:00:132
5508992940,293cyclictest12341-21kworker/u16:0+efi_rts_wq23:25:110
5509992930,292cyclictest12341-21kworker/u16:0+efi_rts_wq00:25:121
5508992930,292cyclictest22121-21kworker/u16:3+efi_rts_wq19:50:130
5509992920,291cyclictest22121-21kworker/u16:3+efi_rts_wq21:50:131
5509992910,290cyclictest3178-21kworker/u16:3+efi_rts_wq00:01:121
5508992910,290cyclictest14961-21kworker/u16:2+efi_rts_wq23:15:120
5510992900,289cyclictest22121-21kworker/u16:3+efi_rts_wq20:35:132
5509992900,289cyclictest29821-21kworker/u16:1+efi_rts_wq19:30:191
5511992890,288cyclictest1754-21kworker/u16:2+efi_rts_wq22:05:123
5508992890,288cyclictest22121-21kworker/u16:3+efi_rts_wq20:45:130
5511992880,287cyclictest22121-21kworker/u16:3+efi_rts_wq21:30:113
5509992880,287cyclictest7267-21kworker/u16:3+efi_rts_wq23:10:111
5509992880,287cyclictest3178-21kworker/u16:3+efi_rts_wq00:10:111
5509992870,286cyclictest26231-21kworker/u16:0+efi_rts_wq19:25:131
5511992860,285cyclictest22121-21kworker/u16:3+efi_rts_wq21:20:393
5511992850,284cyclictest22121-21kworker/u16:3+efi_rts_wq20:35:143
5510992850,284cyclictest1754-21kworker/u16:2+efi_rts_wq20:55:132
5508992850,284cyclictest1754-21kworker/u16:2+efi_rts_wq19:55:120
5509992830,282cyclictest22121-21kworker/u16:3+efi_rts_wq21:20:141
5508992830,282cyclictest1754-21kworker/u16:2+efi_rts_wq22:35:110
5509992820,281cyclictest26231-21kworker/u16:0+efi_rts_wq19:15:131
5508992820,281cyclictest22121-21kworker/u16:3+efi_rts_wq21:15:120
5509992800,279cyclictest21396-21kworker/u16:1+efi_rts_wq23:50:121
5511992790,278cyclictest22121-21kworker/u16:3+efi_rts_wq21:40:443
5508992780,277cyclictest3178-21kworker/u16:3+efi_rts_wq00:21:150
5508992780,277cyclictest22121-21kworker/u16:3+efi_rts_wq22:40:120
5508992780,277cyclictest1754-21kworker/u16:2+efi_rts_wq20:10:110
5511992770,276cyclictest26231-21kworker/u16:0+efi_rts_wq19:10:123
5509992760,275cyclictest4418-21kworker/u16:2+efi_rts_wq22:55:591
5509992760,274cyclictest1754-21kworker/u16:2+efi_rts_wq22:35:101
5510992750,274cyclictest31654-21kworker/u16:1+efi_rts_wq23:05:112
5511992740,273cyclictest1754-21kworker/u16:2+efi_rts_wq20:20:133
5511992730,272cyclictest21396-21kworker/u16:1+efi_rts_wq23:56:113
5511992730,271cyclictest1754-21kworker/u16:2+efi_rts_wq21:55:133
5510992730,272cyclictest1754-21kworker/u16:2+efi_rts_wq21:45:142
5510992720,271cyclictest22121-21kworker/u16:3+efi_rts_wq21:10:112
5508992720,271cyclictest3178-21kworker/u16:3+efi_rts_wq00:10:110
5508992720,271cyclictest1754-21kworker/u16:2+efi_rts_wq20:30:120
5510992710,270cyclictest29821-21kworker/u16:1+efi_rts_wq19:45:222
5510992710,269cyclictest22121-21kworker/u16:3+efi_rts_wq22:30:122
5508992690,268cyclictest31654-21kworker/u16:1+efi_rts_wq22:45:130
5509992660,265cyclictest1754-21kworker/u16:2+efi_rts_wq21:05:121
5508992650,264cyclictest22121-21kworker/u16:3+efi_rts_wq22:20:520
5508992640,263cyclictest1754-21kworker/u16:2+efi_rts_wq20:55:340
5508992640,262cyclictest14961-21kworker/u16:2+efi_rts_wq23:20:120
5511992630,262cyclictest21396-21kworker/u16:1+efi_rts_wq00:00:143
5510992630,262cyclictest1754-21kworker/u16:2+efi_rts_wq21:05:132
5509992620,261cyclictest1754-21kworker/u16:2+efi_rts_wq22:05:121
5510992610,259cyclictest1754-21kworker/u16:2+efi_rts_wq22:35:552
5508992610,260cyclictest22121-21kworker/u16:3+efi_rts_wq22:10:120
5508992610,260cyclictest12341-21kworker/u16:0+efi_rts_wq23:35:120
5508992600,259cyclictest1754-21kworker/u16:2+efi_rts_wq21:25:410
5508992580,257cyclictest22121-21kworker/u16:3+efi_rts_wq21:40:120
5508992580,257cyclictest12341-21kworker/u16:0+efi_rts_wq23:45:160
5509992550,254cyclictest22121-21kworker/u16:3+efi_rts_wq20:25:131
5509992540,253cyclictest31654-21kworker/u16:1+efi_rts_wq23:00:121
5509992530,252cyclictest12341-21kworker/u16:0+efi_rts_wq00:15:131
5511992520,251cyclictest26231-21kworker/u16:0+efi_rts_wq19:40:103
5511992520,251cyclictest1754-21kworker/u16:2+efi_rts_wq22:00:133
5508992520,251cyclictest3178-21kworker/u16:3+efi_rts_wq00:30:140
5508992510,250cyclictest29821-21kworker/u16:1+efi_rts_wq19:45:140
5510992500,246cyclictest22121-21kworker/u16:3+efi_rts_wq20:15:142
5509992500,249cyclictest26231-21kworker/u16:0+efi_rts_wq19:10:121
5509992480,247cyclictest29821-21kworker/u16:1+efi_rts_wq19:35:131
5508992430,242cyclictest1754-21kworker/u16:2+efi_rts_wq20:00:110
5510992420,240cyclictest21396-21kworker/u16:1+efi_rts_wq23:40:132
5511992410,240cyclictest22121-21kworker/u16:3+efi_rts_wq22:20:143
5509992390,238cyclictest21396-21kworker/u16:1+efi_rts_wq23:30:121
5511992380,237cyclictest1754-21kworker/u16:2+efi_rts_wq22:25:533
5508992380,237cyclictest22121-21kworker/u16:3+efi_rts_wq20:15:140
5508992370,236cyclictest31654-21kworker/u16:1+efi_rts_wq22:50:120
5508992370,236cyclictest21396-21kworker/u16:1+efi_rts_wq00:00:130
5509992360,234cyclictest31654-21kworker/u16:1+efi_rts_wq23:05:121
5510992340,233cyclictest22121-21kworker/u16:3+efi_rts_wq20:05:132
5511992330,232cyclictest31654-21kworker/u16:1+efi_rts_wq22:50:123
5511992310,230cyclictest22121-21kworker/u16:3+efi_rts_wq20:05:253
5511992300,229cyclictest22121-21kworker/u16:3+efi_rts_wq21:00:143
5511992300,229cyclictest12341-21kworker/u16:0+efi_rts_wq00:06:133
5510992300,229cyclictest1754-21kworker/u16:2+efi_rts_wq20:20:282
5509992261,224cyclictest31654-21kworker/u16:1+efi_rts_wq22:50:121
5508992260,225cyclictest1754-21kworker/u16:2+efi_rts_wq22:25:110
5511992250,224cyclictest1754-21kworker/u16:2+efi_rts_wq21:35:143
5510992250,224cyclictest12341-21kworker/u16:0+efi_rts_wq00:35:142
5511992240,223cyclictest12341-21kworker/u16:0+efi_rts_wq00:26:173
5509992230,222cyclictest1754-21kworker/u16:2+efi_rts_wq21:25:131
5508992220,221cyclictest12341-21kworker/u16:0+efi_rts_wq00:05:110
5511992200,219cyclictest1754-21kworker/u16:2+efi_rts_wq20:10:133
5511992200,218cyclictest12341-21kworker/u16:0+efi_rts_wq00:15:133
5510992200,219cyclictest1754-21kworker/u16:2+efi_rts_wq20:10:272
5509992180,217cyclictest1754-21kworker/u16:2+efi_rts_wq22:25:111
5511992170,216cyclictest22121-21kworker/u16:3+efi_rts_wq22:40:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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