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2026-01-05 - 10:24

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 Jan 05, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
222412327319,5sleep30-21swapper/319:08:423
222802321314,5sleep20-21swapper/219:09:132
222342319305,5sleep10-21swapper/119:08:361
22607993180,315cyclictest20721-21kworker/u16:2+efi_rts_wq21:50:140
222012318303,5sleep00-21swapper/019:08:100
22610993140,313cyclictest25554-21kworker/u16:1+efi_rts_wq22:40:153
22607993130,312cyclictest25554-21kworker/u16:1+efi_rts_wq23:00:010
22609993120,311cyclictest24073-21kworker/u16:0+efi_rts_wq23:46:162
22609993120,311cyclictest20721-21kworker/u16:2+efi_rts_wq22:10:152
22608993110,310cyclictest20721-21kworker/u16:2+efi_rts_wq22:45:141
22607993100,309cyclictest25554-21kworker/u16:1+efi_rts_wq20:25:130
22608993090,308cyclictest24556-21kworker/u16:0+efi_rts_wq21:35:141
22610993080,307cyclictest25554-21kworker/u16:1+efi_rts_wq19:59:313
22610993070,306cyclictest24556-21kworker/u16:0+efi_rts_wq20:55:143
22609993070,306cyclictest20721-21kworker/u16:2+efi_rts_wq23:25:152
22610993060,305cyclictest25554-21kworker/u16:1+efi_rts_wq20:44:383
22609993060,305cyclictest25554-21kworker/u16:1+efi_rts_wq21:55:142
22608993060,305cyclictest24073-21kworker/u16:0+efi_rts_wq23:45:131
22610993050,304cyclictest25554-21kworker/u16:1+efi_rts_wq21:05:183
22608993050,304cyclictest24073-21kworker/u16:0+efi_rts_wq23:20:141
22607993040,303cyclictest25554-21kworker/u16:1+efi_rts_wq21:29:460
22607993040,303cyclictest19318-21kworker/u16:3+efi_rts_wq00:15:130
22610993030,302cyclictest25554-21kworker/u16:1+efi_rts_wq22:50:123
22609993030,302cyclictest24073-21kworker/u16:0+efi_rts_wq23:10:172
22608993030,302cyclictest24073-21kworker/u16:0+efi_rts_wq23:15:131
22607993030,302cyclictest20721-21kworker/u16:2+efi_rts_wq22:04:510
22607993030,301cyclictest25554-21kworker/u16:1+efi_rts_wq22:50:110
22608993020,301cyclictest24073-21kworker/u16:0+efi_rts_wq00:20:141
22608993010,300cyclictest24556-21kworker/u16:0+efi_rts_wq20:10:151
22608993010,299cyclictest20721-21kworker/u16:2+efi_rts_wq23:25:151
22608993000,299cyclictest24556-21kworker/u16:0+efi_rts_wq20:35:131
22608992990,298cyclictest24556-21kworker/u16:0+efi_rts_wq19:30:141
22607992980,297cyclictest20721-21kworker/u16:2+efi_rts_wq23:55:130
22607992970,296cyclictest25554-21kworker/u16:1+efi_rts_wq20:40:130
22607992970,296cyclictest25554-21kworker/u16:1+efi_rts_wq20:05:130
22610992960,295cyclictest20721-21kworker/u16:2+efi_rts_wq00:00:153
22607992960,295cyclictest24556-21kworker/u16:0+efi_rts_wq19:45:110
22607992960,295cyclictest24073-21kworker/u16:0+efi_rts_wq00:35:140
22607992950,294cyclictest24073-21kworker/u16:0+efi_rts_wq00:25:120
22610992940,292cyclictest20721-21kworker/u16:2+efi_rts_wq22:55:113
22607992940,293cyclictest24556-21kworker/u16:0+efi_rts_wq21:15:130
22608992930,292cyclictest20721-21kworker/u16:2+efi_rts_wq22:30:131
22607992930,292cyclictest25554-21kworker/u16:1+efi_rts_wq19:40:150
22607992930,291cyclictest19318-21kworker/u16:3+efi_rts_wq00:30:150
22609992920,290cyclictest25554-21kworker/u16:1+efi_rts_wq22:40:152
22608992920,291cyclictest25554-21kworker/u16:1+efi_rts_wq21:45:121
22608992920,291cyclictest19318-21kworker/u16:3+efi_rts_wq00:16:231
22608992900,289cyclictest25554-21kworker/u16:1+efi_rts_wq19:20:141
22610992890,288cyclictest25554-21kworker/u16:1+efi_rts_wq22:15:113
22610992870,286cyclictest24073-21kworker/u16:0+efi_rts_wq23:56:193
22607992870,286cyclictest24556-21kworker/u16:0+efi_rts_wq20:20:150
22610992860,285cyclictest20721-21kworker/u16:2+efi_rts_wq22:45:143
22608992850,284cyclictest25554-21kworker/u16:1+efi_rts_wq21:20:141
22608992840,283cyclictest24556-21kworker/u16:0+efi_rts_wq20:20:151
22608992840,283cyclictest24556-21kworker/u16:0+efi_rts_wq19:45:111
22607992840,283cyclictest24556-21kworker/u16:0+efi_rts_wq21:04:420
22610992820,281cyclictest20721-21kworker/u16:2+efi_rts_wq23:45:093
22608992790,278cyclictest20721-21kworker/u16:2+efi_rts_wq22:00:141
22608992790,275cyclictest20721-21kworker/u16:2+efi_rts_wq23:40:141
22607992790,278cyclictest24556-21kworker/u16:0+efi_rts_wq21:39:460
22608992780,277cyclictest25554-21kworker/u16:1+efi_rts_wq21:09:431
22608992760,275cyclictest20721-21kworker/u16:2+efi_rts_wq22:35:141
22610992750,274cyclictest19318-21kworker/u16:3+efi_rts_wq00:31:263
22608992750,274cyclictest25554-21kworker/u16:1+efi_rts_wq22:20:131
22610992740,273cyclictest20721-21kworker/u16:2+efi_rts_wq21:44:483
22610992730,272cyclictest24556-21kworker/u16:0+efi_rts_wq20:00:143
22607992720,270cyclictest20721-21kworker/u16:2+efi_rts_wq23:40:140
22607992710,270cyclictest25554-21kworker/u16:1+efi_rts_wq22:09:520
22607992710,270cyclictest20721-21kworker/u16:2+efi_rts_wq00:00:160
22608992700,269cyclictest25554-21kworker/u16:1+efi_rts_wq20:50:121
22607992700,269cyclictest24556-21kworker/u16:0+efi_rts_wq20:39:370
22610992690,268cyclictest24556-21kworker/u16:0+efi_rts_wq21:30:123
22607992690,268cyclictest25554-21kworker/u16:1+efi_rts_wq21:34:460
22608992680,267cyclictest24556-21kworker/u16:0+efi_rts_wq19:50:191
22607992680,267cyclictest24556-21kworker/u16:0+efi_rts_wq20:00:140
22609992660,265cyclictest25554-21kworker/u16:1+efi_rts_wq20:05:122
22608992660,265cyclictest25554-21kworker/u16:1+efi_rts_wq19:25:161
22610992650,264cyclictest24073-21kworker/u16:0+efi_rts_wq23:20:153
22607992650,264cyclictest24556-21kworker/u16:0+efi_rts_wq20:45:110
22609992630,262cyclictest25554-21kworker/u16:1+efi_rts_wq20:25:132
22610992620,261cyclictest24556-21kworker/u16:0+efi_rts_wq19:15:013
22607992600,259cyclictest24073-21kworker/u16:0+efi_rts_wq23:05:140
22610992590,258cyclictest20721-21kworker/u16:2+efi_rts_wq23:35:133
22607992590,258cyclictest24073-21kworker/u16:0+efi_rts_wq00:11:220
22608992570,256cyclictest24556-21kworker/u16:0+efi_rts_wq19:14:231
22607992570,256cyclictest24073-21kworker/u16:0+efi_rts_wq23:50:130
22610992560,255cyclictest25554-21kworker/u16:1+efi_rts_wq22:20:133
22609992550,253cyclictest24556-21kworker/u16:0+efi_rts_wq19:10:122
22608992530,252cyclictest25554-21kworker/u16:1+efi_rts_wq21:25:131
22607992530,252cyclictest25554-21kworker/u16:1+efi_rts_wq19:35:140
22607992520,251cyclictest24073-21kworker/u16:0+efi_rts_wq00:05:120
22610992510,248cyclictest24073-21kworker/u16:0+efi_rts_wq00:05:133
22609992500,249cyclictest24073-21kworker/u16:0+efi_rts_wq00:21:242
22607992500,249cyclictest25554-21kworker/u16:1+efi_rts_wq21:55:140
22610992480,247cyclictest24556-21kworker/u16:0+efi_rts_wq19:10:123
22610992450,244cyclictest20721-21kworker/u16:2+efi_rts_wq23:00:143
22609992450,244cyclictest25554-21kworker/u16:1+efi_rts_wq21:05:182
22607992430,242cyclictest20721-21kworker/u16:2+efi_rts_wq22:44:570
22610992420,241cyclictest24073-21kworker/u16:0+efi_rts_wq23:30:053
22607992420,241cyclictest24556-21kworker/u16:0+efi_rts_wq20:14:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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