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2026-09-03 - 09:54

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 Sep 03, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192952331310,4sleep00-21swapper/019:08:270
191952318311,4sleep30-21swapper/319:07:113
191272318305,10sleep20-21swapper/219:06:172
191512314308,4sleep10-21swapper/119:06:361
19681993010,299cyclictest967-21kworker/u16:2+efi_rts_wq20:25:100
19682993000,298cyclictest967-21kworker/u16:2+efi_rts_wq21:50:171
19684992990,298cyclictest13661-21kworker/u16:1+efi_rts_wq23:09:313
19684992990,298cyclictest13661-21kworker/u16:1+efi_rts_wq23:09:313
19681992980,297cyclictest10312-21kworker/u16:2+efi_rts_wq23:51:100
19683992970,296cyclictest29011-21kworker/u16:0+efi_rts_wq20:55:112
19682992970,296cyclictest13661-21kworker/u16:1+efi_rts_wq22:50:131
19681992950,294cyclictest776-21kworker/u16:3+efi_rts_wq23:45:120
19684992940,293cyclictest29011-21kworker/u16:0+efi_rts_wq19:28:473
19682992930,292cyclictest967-21kworker/u16:2+efi_rts_wq21:25:131
19682992930,292cyclictest967-21kworker/u16:2+efi_rts_wq19:45:151
19681992930,292cyclictest18940-21kworker/u16:3+efi_rts_wq23:05:130
19681992930,292cyclictest18940-21kworker/u16:3+efi_rts_wq23:05:120
19683992920,291cyclictest13661-21kworker/u16:1+efi_rts_wq23:25:142
19682992920,291cyclictest19045-21kworker/u16:0+efi_rts_wq00:05:161
19681992910,290cyclictest29011-21kworker/u16:0+efi_rts_wq21:45:120
19681992910,289cyclictest29011-21kworker/u16:0+efi_rts_wq21:35:130
19681992900,289cyclictest16670-21kworker/u16:1+efi_rts_wq00:15:130
19683992890,288cyclictest16670-21kworker/u16:1+efi_rts_wq00:20:112
19683992880,287cyclictest13661-21kworker/u16:1+efi_rts_wq23:40:122
19684992870,286cyclictest24466-21kworker/u16:1+efi_rts_wq22:05:123
19682992870,286cyclictest776-21kworker/u16:3+efi_rts_wq23:35:131
19681992870,286cyclictest967-21kworker/u16:2+efi_rts_wq20:50:120
19681992870,286cyclictest967-21kworker/u16:2+efi_rts_wq19:50:120
19681992870,286cyclictest29011-21kworker/u16:0+efi_rts_wq21:05:120
19682992860,285cyclictest29011-21kworker/u16:0+efi_rts_wq20:55:121
19684992830,282cyclictest29011-21kworker/u16:0+efi_rts_wq21:49:163
19683992830,282cyclictest29011-21kworker/u16:0+efi_rts_wq20:35:132
19684992800,279cyclictest7570-21kworker/u16:3+efi_rts_wq22:45:133
19682992800,279cyclictest13661-21kworker/u16:1+efi_rts_wq23:10:181
19682992800,279cyclictest13661-21kworker/u16:1+efi_rts_wq23:10:181
19684992790,278cyclictest29011-21kworker/u16:0+efi_rts_wq20:00:123
19682992780,276cyclictest18940-21kworker/u16:3+efi_rts_wq23:15:111
19681992780,277cyclictest13661-21kworker/u16:1+efi_rts_wq22:54:270
19682992760,275cyclictest16670-21kworker/u16:1+efi_rts_wq00:25:131
19681992760,275cyclictest13661-21kworker/u16:1+efi_rts_wq23:30:130
19684992750,274cyclictest967-21kworker/u16:2+efi_rts_wq19:20:133
19682992750,274cyclictest13661-21kworker/u16:1+efi_rts_wq22:55:131
19681992750,274cyclictest967-21kworker/u16:2+efi_rts_wq19:20:120
19681992740,273cyclictest7570-21kworker/u16:3+efi_rts_wq22:19:210
19682992730,272cyclictest7570-21kworker/u16:3+efi_rts_wq22:00:121
19682992730,271cyclictest24466-21kworker/u16:1+efi_rts_wq22:20:121
19682992730,270cyclictest29011-21kworker/u16:0+efi_rts_wq21:10:131
19681992730,272cyclictest967-21kworker/u16:2+efi_rts_wq21:20:150
19684992720,271cyclictest7570-21kworker/u16:3+efi_rts_wq22:34:233
19684992710,270cyclictest13661-21kworker/u16:1+efi_rts_wq23:39:363
19682992710,270cyclictest29011-21kworker/u16:0+efi_rts_wq19:23:461
19682992700,269cyclictest967-21kworker/u16:2+efi_rts_wq19:25:121
19682992670,266cyclictest967-21kworker/u16:2+efi_rts_wq21:09:071
19682992670,266cyclictest967-21kworker/u16:2+efi_rts_wq20:20:121
19683992660,265cyclictest967-21kworker/u16:2+efi_rts_wq21:14:082
19683992660,265cyclictest29011-21kworker/u16:0+efi_rts_wq21:54:172
19683992660,265cyclictest19045-21kworker/u16:0+efi_rts_wq00:06:132
19682992660,265cyclictest13661-21kworker/u16:1+efi_rts_wq23:25:131
19682992660,265cyclictest13661-21kworker/u16:1+efi_rts_wq23:00:111
19681992660,265cyclictest967-21kworker/u16:2+efi_rts_wq21:30:120
19681992640,262cyclictest967-21kworker/u16:2+efi_rts_wq19:25:120
19683992630,262cyclictest7570-21kworker/u16:3+efi_rts_wq22:45:132
19681992630,260cyclictest29011-21kworker/u16:0+efi_rts_wq20:30:120
19684992620,261cyclictest967-21kworker/u16:2+efi_rts_wq20:10:123
19684992590,258cyclictest967-21kworker/u16:2+efi_rts_wq20:40:133
19684992590,258cyclictest29011-21kworker/u16:0+efi_rts_wq20:05:163
19682992570,256cyclictest967-21kworker/u16:2+efi_rts_wq19:30:121
19681992570,256cyclictest18940-21kworker/u16:3+efi_rts_wq23:15:100
19681992560,255cyclictest18940-21kworker/u16:3+efi_rts_wq23:14:330
19681992560,255cyclictest18940-21kworker/u16:3+efi_rts_wq23:14:320
19681992530,252cyclictest29011-21kworker/u16:0+efi_rts_wq21:40:130
19684992520,251cyclictest7570-21kworker/u16:3+efi_rts_wq22:24:223
19684992500,249cyclictest29011-21kworker/u16:0+efi_rts_wq21:10:133
19684992490,246cyclictest10312-21kworker/u16:2+efi_rts_wq23:50:133
19681992470,246cyclictest29011-21kworker/u16:0+efi_rts_wq20:08:560
19681992470,246cyclictest19045-21kworker/u16:0+efi_rts_wq00:21:160
19681992470,245cyclictest24466-21kworker/u16:1+efi_rts_wq22:30:120
19683992460,245cyclictest7570-21kworker/u16:3+efi_rts_wq22:10:172
19682992450,244cyclictest10312-21kworker/u16:2+efi_rts_wq23:55:121
19681992450,244cyclictest10312-21kworker/u16:2+efi_rts_wq00:00:100
19681992440,243cyclictest967-21kworker/u16:2+efi_rts_wq19:10:130
19684992420,241cyclictest967-21kworker/u16:2+efi_rts_wq21:25:133
19682992400,239cyclictest6874-21kworker/u16:0+efi_rts_wq22:35:121
19683992380,237cyclictest29011-21kworker/u16:0+efi_rts_wq20:13:572
19682992380,237cyclictest29011-21kworker/u16:0+efi_rts_wq19:40:141
19681992380,237cyclictest967-21kworker/u16:2+efi_rts_wq19:43:500
19684992370,236cyclictest18940-21kworker/u16:3+efi_rts_wq22:59:283
19681992360,234cyclictest967-21kworker/u16:2+efi_rts_wq21:15:140
19681992340,233cyclictest19045-21kworker/u16:0+efi_rts_wq00:30:130
19682992330,232cyclictest29011-21kworker/u16:0+efi_rts_wq19:58:551
19682992310,230cyclictest7570-21kworker/u16:3+efi_rts_wq21:59:181
19682992300,229cyclictest29011-21kworker/u16:0+efi_rts_wq19:35:121
19684992260,225cyclictest29011-21kworker/u16:0+efi_rts_wq19:55:133
19684992250,224cyclictest23939-21kworker/u16:2+efi_rts_wq23:19:333
19684992200,219cyclictest29011-21kworker/u16:0+efi_rts_wq19:15:123
19684992180,217cyclictest13661-21kworker/u16:1+efi_rts_wq23:20:143
19682992180,217cyclictest29011-21kworker/u16:0+efi_rts_wq20:30:121
19681992170,216cyclictest24466-21kworker/u16:1+efi_rts_wq21:55:120
19682992150,214cyclictest7570-21kworker/u16:3+efi_rts_wq22:10:181
19682992140,212cyclictest776-21kworker/u16:3+efi_rts_wq23:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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