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2025-12-04 - 10:15

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 Thu Dec 04, 2025 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71692316308,5sleep30-21swapper/319:09:093
53942316309,5sleep20-21swapper/219:05:032
70542315307,5sleep10-21swapper/119:07:391
68972315308,5sleep00-21swapper/019:05:360
7501993010,300cyclictest14330-21kworker/u16:0+efi_rts_wq22:25:132
7500993010,298cyclictest10195-21kworker/u16:1+efi_rts_wq19:10:131
7499993010,300cyclictest21507-21kworker/u16:3+efi_rts_wq23:56:160
7499993000,299cyclictest10195-21kworker/u16:1+efi_rts_wq20:45:120
7500992980,297cyclictest10195-21kworker/u16:1+efi_rts_wq19:25:031
7499992970,296cyclictest13359-21kworker/u16:2+efi_rts_wq20:35:140
7502992960,295cyclictest13359-21kworker/u16:2+efi_rts_wq23:05:143
7501992940,293cyclictest13359-21kworker/u16:2+efi_rts_wq19:30:042
7500992920,291cyclictest13359-21kworker/u16:2+efi_rts_wq23:25:121
7500992920,291cyclictest10195-21kworker/u16:1+efi_rts_wq19:15:131
7502992910,290cyclictest11215-21kworker/u16:1+efi_rts_wq00:11:203
7501992910,290cyclictest14330-21kworker/u16:0+efi_rts_wq21:25:282
7499992910,290cyclictest11215-21kworker/u16:1+efi_rts_wq00:05:160
7502992890,288cyclictest14330-21kworker/u16:0+efi_rts_wq21:15:263
7500992890,287cyclictest13359-21kworker/u16:2+efi_rts_wq23:05:121
7502992870,286cyclictest14330-21kworker/u16:0+efi_rts_wq22:45:123
7501992870,286cyclictest14330-21kworker/u16:0+efi_rts_wq21:35:132
7500992870,286cyclictest10195-21kworker/u16:1+efi_rts_wq19:45:121
7500992870,285cyclictest11215-21kworker/u16:1+efi_rts_wq23:50:141
7502992860,285cyclictest14330-21kworker/u16:0+efi_rts_wq22:25:123
7502992860,285cyclictest13359-21kworker/u16:2+efi_rts_wq21:20:273
7500992860,285cyclictest13359-21kworker/u16:2+efi_rts_wq22:20:131
7499992850,284cyclictest13359-21kworker/u16:2+efi_rts_wq20:20:160
7500992840,283cyclictest10195-21kworker/u16:1+efi_rts_wq20:45:121
7500992830,282cyclictest13359-21kworker/u16:2+efi_rts_wq20:30:121
7502992820,281cyclictest10195-21kworker/u16:1+efi_rts_wq19:20:143
7501992820,281cyclictest13359-21kworker/u16:2+efi_rts_wq22:10:162
7501992820,281cyclictest13359-21kworker/u16:2+efi_rts_wq20:20:162
7502992810,280cyclictest21507-21kworker/u16:3+efi_rts_wq00:00:143
7501992800,279cyclictest13359-21kworker/u16:2+efi_rts_wq23:10:132
7500992800,278cyclictest13359-21kworker/u16:2+efi_rts_wq22:40:121
7499992800,279cyclictest11215-21kworker/u16:1+efi_rts_wq00:10:150
7499992790,278cyclictest14330-21kworker/u16:0+efi_rts_wq22:25:140
7499992790,278cyclictest11215-21kworker/u16:1+efi_rts_wq23:50:120
7499992780,277cyclictest21507-21kworker/u16:3+efi_rts_wq23:45:120
7501992760,275cyclictest13359-21kworker/u16:2+efi_rts_wq19:15:012
7501992750,274cyclictest21507-21kworker/u16:3+efi_rts_wq00:01:182
7502992730,272cyclictest14330-21kworker/u16:0+efi_rts_wq21:05:143
7502992730,272cyclictest11215-21kworker/u16:1+efi_rts_wq00:20:133
7499992730,272cyclictest13359-21kworker/u16:2+efi_rts_wq22:50:130
7501992720,271cyclictest13359-21kworker/u16:2+efi_rts_wq22:00:342
7499992720,269cyclictest13359-21kworker/u16:2+efi_rts_wq19:50:130
7501992710,270cyclictest10195-21kworker/u16:1+efi_rts_wq19:40:132
7500992710,270cyclictest13359-21kworker/u16:2+efi_rts_wq20:50:141
7501992700,269cyclictest10195-21kworker/u16:1+efi_rts_wq19:45:122
7502992690,268cyclictest10195-21kworker/u16:1+efi_rts_wq20:05:163
7501992680,267cyclictest13359-21kworker/u16:2+efi_rts_wq19:25:112
7500992680,267cyclictest10195-21kworker/u16:1+efi_rts_wq19:20:131
7502992670,266cyclictest21507-21kworker/u16:3+efi_rts_wq00:30:123
7502992660,265cyclictest13359-21kworker/u16:2+efi_rts_wq19:30:133
7500992660,265cyclictest14330-21kworker/u16:0+efi_rts_wq21:40:131
7502992640,263cyclictest13359-21kworker/u16:2+efi_rts_wq22:55:133
7502992640,263cyclictest11215-21kworker/u16:1+efi_rts_wq23:40:163
7502992630,262cyclictest14330-21kworker/u16:0+efi_rts_wq21:40:133
7501992620,261cyclictest10195-21kworker/u16:1+efi_rts_wq20:00:142
7501992610,260cyclictest13359-21kworker/u16:2+efi_rts_wq22:40:122
7499992610,260cyclictest10195-21kworker/u16:1+efi_rts_wq20:55:140
7502992590,258cyclictest11215-21kworker/u16:1+efi_rts_wq00:25:143
7500992590,256cyclictest14330-21kworker/u16:0+efi_rts_wq21:05:131
7499992590,258cyclictest13359-21kworker/u16:2+efi_rts_wq21:20:140
7501992580,257cyclictest13359-21kworker/u16:2+efi_rts_wq19:35:132
7501992580,257cyclictest11215-21kworker/u16:1+efi_rts_wq23:20:472
7499992580,257cyclictest13359-21kworker/u16:2+efi_rts_wq23:15:460
7502992570,256cyclictest11215-21kworker/u16:1+efi_rts_wq00:06:193
7502992560,255cyclictest13359-21kworker/u16:2+efi_rts_wq23:10:133
7500992540,253cyclictest10195-21kworker/u16:1+efi_rts_wq20:55:141
7502992530,252cyclictest13359-21kworker/u16:2+efi_rts_wq22:40:123
7502992490,248cyclictest11215-21kworker/u16:1+efi_rts_wq00:15:163
7501992490,248cyclictest10195-21kworker/u16:1+efi_rts_wq19:55:142
7500992490,248cyclictest13359-21kworker/u16:2+efi_rts_wq20:40:131
7502992480,247cyclictest13359-21kworker/u16:2+efi_rts_wq19:25:113
7499992460,245cyclictest13359-21kworker/u16:2+efi_rts_wq21:10:130
7500992440,243cyclictest13359-21kworker/u16:2+efi_rts_wq21:45:131
7502992400,239cyclictest13359-21kworker/u16:2+efi_rts_wq22:00:123
7501992400,239cyclictest21507-21kworker/u16:3+efi_rts_wq00:30:132
7499992400,239cyclictest14330-21kworker/u16:0+efi_rts_wq22:35:120
7500992390,237cyclictest13359-21kworker/u16:2+efi_rts_wq20:25:171
7501992370,236cyclictest14330-21kworker/u16:0+efi_rts_wq22:05:152
7501992370,236cyclictest11215-21kworker/u16:1+efi_rts_wq00:25:142
7500992370,236cyclictest13359-21kworker/u16:2+efi_rts_wq21:00:131
7500992370,235cyclictest14330-21kworker/u16:0+efi_rts_wq22:30:131
7500992370,235cyclictest14330-21kworker/u16:0+efi_rts_wq22:30:131
7499992370,236cyclictest13359-21kworker/u16:2+efi_rts_wq21:30:290
7502992360,235cyclictest13359-21kworker/u16:2+efi_rts_wq20:15:123
7499992340,233cyclictest13359-21kworker/u16:2+efi_rts_wq21:55:120
7502992320,231cyclictest21507-21kworker/u16:3+efi_rts_wq00:35:163
7502992250,224cyclictest11215-21kworker/u16:1+efi_rts_wq23:35:503
7500992240,223cyclictest13359-21kworker/u16:2+efi_rts_wq20:15:151
7501992230,222cyclictest11215-21kworker/u16:1+efi_rts_wq00:20:122
7502992200,219cyclictest13359-21kworker/u16:2+efi_rts_wq20:35:183
7500992190,218cyclictest14330-21kworker/u16:0+efi_rts_wq22:15:361
7502992180,217cyclictest13359-21kworker/u16:2+efi_rts_wq21:45:153
7501992170,215cyclictest14330-21kworker/u16:0+efi_rts_wq22:35:142
7499992130,212cyclictest10195-21kworker/u16:1+efi_rts_wq20:05:150
7500992110,210cyclictest13359-21kworker/u16:2+efi_rts_wq21:10:131
7500992100,209cyclictest13359-21kworker/u16:2+efi_rts_wq22:10:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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