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2025-11-22 - 13:09

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 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 highest latencies:
System rackcslot3s.osadl.org (updated Sat Nov 22, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303452325319,4sleep00-21swapper/019:06:070
303112316309,4sleep30-21swapper/319:05:413
305282315307,5sleep10-21swapper/119:08:281
288122315308,5sleep20-21swapper/219:05:092
30915992990,298cyclictest18892-21kworker/u16:0+efi_rts_wq00:16:173
30913992990,298cyclictest25249-21kworker/u16:3+efi_rts_wq22:25:121
30913992980,297cyclictest5313-21kworker/u16:2+efi_rts_wq23:45:141
30915992950,293cyclictest2812-21kworker/u16:1+efi_rts_wq22:55:123
30915992940,293cyclictest2812-21kworker/u16:1+efi_rts_wq21:29:543
30915992940,293cyclictest25249-21kworker/u16:3+efi_rts_wq23:35:123
30915992930,292cyclictest2812-21kworker/u16:1+efi_rts_wq21:20:133
30914992930,290cyclictest18892-21kworker/u16:0+efi_rts_wq00:20:122
30913992920,291cyclictest2812-21kworker/u16:1+efi_rts_wq20:25:131
30915992910,290cyclictest7127-21kworker/u16:3+efi_rts_wq20:30:123
30915992910,290cyclictest7127-21kworker/u16:3+efi_rts_wq20:15:123
30915992910,290cyclictest7127-21kworker/u16:3+efi_rts_wq20:10:113
30912992910,290cyclictest25877-21kworker/u16:2+efi_rts_wq19:45:120
30912992900,289cyclictest2812-21kworker/u16:1+efi_rts_wq21:24:520
30912992890,288cyclictest25249-21kworker/u16:3+efi_rts_wq22:50:070
30913992880,287cyclictest25249-21kworker/u16:3+efi_rts_wq22:35:141
30915992850,283cyclictest2812-21kworker/u16:1+efi_rts_wq21:45:123
30913992840,283cyclictest7127-21kworker/u16:3+efi_rts_wq20:00:151
30915992830,282cyclictest7127-21kworker/u16:3+efi_rts_wq20:20:153
30914992830,282cyclictest18892-21kworker/u16:0+efi_rts_wq00:10:122
30912992830,282cyclictest25249-21kworker/u16:3+efi_rts_wq23:05:130
30914992820,281cyclictest14226-21kworker/u16:0+efi_rts_wq19:15:152
30915992810,280cyclictest25877-21kworker/u16:2+efi_rts_wq19:40:173
30915992810,279cyclictest2812-21kworker/u16:1+efi_rts_wq22:40:143
30913992810,280cyclictest25877-21kworker/u16:2+efi_rts_wq19:20:151
30912992810,280cyclictest2812-21kworker/u16:1+efi_rts_wq19:55:120
30913992800,279cyclictest25877-21kworker/u16:2+efi_rts_wq19:50:131
30913992770,276cyclictest2812-21kworker/u16:1+efi_rts_wq19:35:121
30913992770,276cyclictest25249-21kworker/u16:3+efi_rts_wq22:15:121
30913992770,276cyclictest25249-21kworker/u16:3+efi_rts_wq22:10:121
30912992760,275cyclictest5313-21kworker/u16:2+efi_rts_wq00:15:150
30914992740,273cyclictest25877-21kworker/u16:2+efi_rts_wq19:45:132
30914992740,273cyclictest25249-21kworker/u16:3+efi_rts_wq23:20:122
30913992740,272cyclictest2812-21kworker/u16:1+efi_rts_wq22:50:151
30915992730,272cyclictest5313-21kworker/u16:2+efi_rts_wq23:50:123
30915992730,271cyclictest25249-21kworker/u16:3+efi_rts_wq22:10:123
30915992720,271cyclictest25249-21kworker/u16:3+efi_rts_wq23:40:163
30915992710,270cyclictest5313-21kworker/u16:2+efi_rts_wq23:25:153
30915992710,269cyclictest25249-21kworker/u16:3+efi_rts_wq23:05:103
30914992700,269cyclictest25249-21kworker/u16:3+efi_rts_wq23:05:122
30913992680,267cyclictest2812-21kworker/u16:1+efi_rts_wq20:50:111
30915992670,266cyclictest25249-21kworker/u16:3+efi_rts_wq22:05:133
30915992660,265cyclictest5313-21kworker/u16:2+efi_rts_wq00:06:153
30912992660,265cyclictest18892-21kworker/u16:0+efi_rts_wq00:00:130
30915992640,263cyclictest25877-21kworker/u16:2+efi_rts_wq20:05:133
30915992640,259cyclictest25877-21kworker/u16:2+efi_rts_wq19:20:143
30913992630,262cyclictest25249-21kworker/u16:3+efi_rts_wq22:05:121
30913992620,261cyclictest2812-21kworker/u16:1+efi_rts_wq23:10:171
30912992620,261cyclictest2812-21kworker/u16:1+efi_rts_wq21:34:540
30912992610,260cyclictest2812-21kworker/u16:1+efi_rts_wq21:19:510
30914992600,259cyclictest5313-21kworker/u16:2+efi_rts_wq23:25:152
30914992600,259cyclictest18892-21kworker/u16:0+efi_rts_wq00:25:122
30914992590,258cyclictest25877-21kworker/u16:2+efi_rts_wq19:34:322
30914992570,256cyclictest2812-21kworker/u16:1+efi_rts_wq21:05:132
30913992570,256cyclictest5313-21kworker/u16:2+efi_rts_wq23:55:111
30913992570,256cyclictest25877-21kworker/u16:2+efi_rts_wq19:15:021
30914992560,255cyclictest2812-21kworker/u16:1+efi_rts_wq20:35:162
30914992560,255cyclictest25877-21kworker/u16:2+efi_rts_wq19:54:352
30914992540,253cyclictest2812-21kworker/u16:1+efi_rts_wq19:25:152
30913992540,253cyclictest14226-21kworker/u16:0+efi_rts_wq19:10:111
30914992520,251cyclictest25249-21kworker/u16:3+efi_rts_wq23:10:172
30914992480,247cyclictest2812-21kworker/u16:1+efi_rts_wq21:39:562
30912992480,247cyclictest5313-21kworker/u16:2+efi_rts_wq23:15:130
30915992470,246cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:123
30915992470,246cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:113
30914992470,245cyclictest25249-21kworker/u16:3+efi_rts_wq22:45:062
30913992470,246cyclictest5313-21kworker/u16:2+efi_rts_wq00:35:141
30913992450,244cyclictest5313-21kworker/u16:2+efi_rts_wq00:15:151
30913992450,244cyclictest18892-21kworker/u16:0+efi_rts_wq00:30:131
30912992450,244cyclictest7127-21kworker/u16:3+efi_rts_wq21:00:130
30912992440,243cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:120
30912992440,243cyclictest25249-21kworker/u16:3+efi_rts_wq22:20:110
30914992420,241cyclictest2812-21kworker/u16:1+efi_rts_wq20:45:152
30913992400,239cyclictest5313-21kworker/u16:2+efi_rts_wq23:30:141
30913992400,239cyclictest25249-21kworker/u16:3+efi_rts_wq23:20:131
30915992380,236cyclictest2812-21kworker/u16:1+efi_rts_wq22:45:153
30914992380,237cyclictest5313-21kworker/u16:2+efi_rts_wq00:05:132
30913992380,237cyclictest2812-21kworker/u16:1+efi_rts_wq20:40:101
30912992380,237cyclictest7127-21kworker/u16:3+efi_rts_wq20:00:150
30915992370,236cyclictest25877-21kworker/u16:2+efi_rts_wq19:49:343
30912992370,236cyclictest25249-21kworker/u16:3+efi_rts_wq21:54:570
30913992360,235cyclictest7127-21kworker/u16:3+efi_rts_wq21:00:131
30914992350,234cyclictest14226-21kworker/u16:0+efi_rts_wq19:10:112
30912992350,234cyclictest18892-21kworker/u16:0+efi_rts_wq00:30:130
30915992320,231cyclictest2812-21kworker/u16:1+efi_rts_wq22:50:163
30914992310,230cyclictest25249-21kworker/u16:3+efi_rts_wq21:55:162
30914992300,229cyclictest2812-21kworker/u16:1+efi_rts_wq21:45:122
30913992300,229cyclictest18892-21kworker/u16:0+efi_rts_wq00:25:121
30913992280,227cyclictest2812-21kworker/u16:1+efi_rts_wq19:29:321
30913992280,227cyclictest25249-21kworker/u16:3+efi_rts_wq23:00:141
30914992270,226cyclictest2812-21kworker/u16:1+efi_rts_wq21:30:142
30914992260,225cyclictest25249-21kworker/u16:3+efi_rts_wq21:50:132
30913992260,225cyclictest25249-21kworker/u16:3+efi_rts_wq22:30:121
30912992260,225cyclictest4328-21kworker/u16:0+efi_rts_wq21:10:130
30912992250,224cyclictest25249-21kworker/u16:3+efi_rts_wq21:59:570
30912992240,223cyclictest7127-21kworker/u16:3+efi_rts_wq20:15:120
30912992240,223cyclictest2812-21kworker/u16:1+efi_rts_wq20:50:110
30914992230,222cyclictest2812-21kworker/u16:1+efi_rts_wq22:00:132
30912992230,222cyclictest18892-21kworker/u16:0+efi_rts_wq00:10:120
30915992210,220cyclictest2812-21kworker/u16:1+efi_rts_wq23:10:123
30913992210,220cyclictest7127-21kworker/u16:3+efi_rts_wq20:39:441
30915992200,219cyclictest25249-21kworker/u16:3+efi_rts_wq21:35:163
30914992190,218cyclictest4328-21kworker/u16:0+efi_rts_wq21:04:482
30915992180,216cyclictest25249-21kworker/u16:3+efi_rts_wq23:00:153
30913992160,215cyclictest2812-21kworker/u16:1+efi_rts_wq20:24:401
30913992090,208cyclictest4328-21kworker/u16:0+efi_rts_wq21:15:161
30914992050,204cyclictest2812-21kworker/u16:1+efi_rts_wq21:40:122
30915991990,198cyclictest7127-21kworker/u16:3+efi_rts_wq20:44:443
30914991970,196cyclictest2812-21kworker/u16:1+efi_rts_wq19:35:122
30913991960,195cyclictest7127-21kworker/u16:3+efi_rts_wq20:55:141
30913991960,195cyclictest25249-21kworker/u16:3+efi_rts_wq23:35:141
30912991960,195cyclictest2812-21kworker/u16:1+efi_rts_wq19:25:140
30913991950,194cyclictest2812-21kworker/u16:1+efi_rts_wq21:30:141
30912991950,194cyclictest2812-21kworker/u16:1+efi_rts_wq21:49:560
30915991930,192cyclictest2812-21kworker/u16:1+efi_rts_wq21:40:113
30915991930,192cyclictest2812-21kworker/u16:1+efi_rts_wq21:14:503
30914991930,191cyclictest4328-21kworker/u16:0+efi_rts_wq21:15:162
30913991920,188cyclictest18892-21kworker/u16:0+efi_rts_wq00:20:121
30915991890,188cyclictest25249-21kworker/u16:3+efi_rts_wq22:30:043
30912991890,188cyclictest25249-21kworker/u16:3+efi_rts_wq23:40:150
30914991870,186cyclictest5313-21kworker/u16:2+efi_rts_wq00:36:212
30914991850,184cyclictest5313-21kworker/u16:2+efi_rts_wq23:30:122
30913991830,182cyclictest7127-21kworker/u16:3+efi_rts_wq20:30:121
30913991830,182cyclictest5313-21kworker/u16:2+efi_rts_wq23:50:111
30913991820,180cyclictest2812-21kworker/u16:1+efi_rts_wq22:40:131
30914991810,180cyclictest2812-21kworker/u16:1+efi_rts_wq20:40:102
30915991800,179cyclictest5313-21kworker/u16:2+efi_rts_wq23:15:123
30914991800,179cyclictest5313-21kworker/u16:2+efi_rts_wq00:01:142
30913991800,179cyclictest2812-21kworker/u16:1+efi_rts_wq22:55:131
30914991790,177cyclictest2812-21kworker/u16:1+efi_rts_wq20:50:112
30913991790,178cyclictest4328-21kworker/u16:0+efi_rts_wq21:25:151
30912991780,177cyclictest5313-21kworker/u16:2+efi_rts_wq23:51:120
30915991720,171cyclictest5313-21kworker/u16:2+efi_rts_wq23:56:133
30913991720,171cyclictest25877-21kworker/u16:2+efi_rts_wq20:05:141
30912991710,170cyclictest5313-21kworker/u16:2+efi_rts_wq00:35:150
30915991650,164cyclictest25877-21kworker/u16:2+efi_rts_wq20:04:373
30913991640,163cyclictest18892-21kworker/u16:0+efi_rts_wq00:00:121
30914991620,161cyclictest25249-21kworker/u16:3+efi_rts_wq22:40:052
30914991610,160cyclictest5313-21kworker/u16:2+efi_rts_wq23:45:132
30912991610,160cyclictest2812-21kworker/u16:1+efi_rts_wq19:30:140
30914991580,156cyclictest25249-21kworker/u16:3+efi_rts_wq22:35:132
30915991520,151cyclictest7127-21kworker/u16:3+efi_rts_wq20:49:463
30914991520,151cyclictest2812-21kworker/u16:1+efi_rts_wq22:55:122
30912991470,146cyclictest2812-21kworker/u16:1+efi_rts_wq20:45:130
30913991390,138cyclictest25877-21kworker/u16:2+efi_rts_wq19:59:371
30913991380,138cyclictest2812-21kworker/u16:1+efi_rts_wq20:45:141
30914991360,135cyclictest2812-21kworker/u16:1+efi_rts_wq20:59:482
30914991330,132cyclictest5313-21kworker/u16:2+efi_rts_wq23:55:102
30915991310,130cyclictest18892-21kworker/u16:0+efi_rts_wq00:10:123
30915991280,127cyclictest7127-21kworker/u16:3+efi_rts_wq20:55:143
30915991260,125cyclictest2812-21kworker/u16:1+efi_rts_wq22:25:023
30915991230,122cyclictest2812-21kworker/u16:1+efi_rts_wq21:05:133
30914991210,120cyclictest5313-21kworker/u16:2+efi_rts_wq00:31:202
30915991190,118cyclictest25877-21kworker/u16:2+efi_rts_wq19:15:003
30912991190,118cyclictest25249-21kworker/u16:3+efi_rts_wq23:20:120
30912991180,117cyclictest25249-21kworker/u16:3+efi_rts_wq23:46:120
30915991160,115cyclictest5313-21kworker/u16:2+efi_rts_wq23:45:133
30915991140,113cyclictest7127-21kworker/u16:3+efi_rts_wq20:29:413
30912991100,109cyclictest2812-21kworker/u16:1+efi_rts_wq22:00:140
30912991070,106cyclictest2812-21kworker/u16:1+efi_rts_wq23:00:090
30912991000,99cyclictest5313-21kworker/u16:2+efi_rts_wq00:05:140
30913993330,2cyclictest795-21snmpd19:46:561
30915993229,2cyclictest795-21snmpd20:37:513
30915993229,2cyclictest795-21snmpd00:35:343
30914993230,2cyclictest795-21snmpd00:18:212
30913993230,2cyclictest795-21snmpd21:13:361
30912993230,2cyclictest795-21snmpd23:35:210
30915993128,2cyclictest795-21snmpd21:56:273
30914993129,2cyclictest795-21snmpd23:01:372
30914993129,2cyclictest25309-21kworker/2:0+events22:50:582
30914993129,2cyclictest22127-21cat21:20:152
30913993130,1cyclictest795-21snmpd21:58:561
30912993130,1cyclictest795-21snmpd20:23:020
30912993130,1cyclictest795-21snmpd20:14:470
30912993129,2cyclictest795-21snmpd23:33:230
30912993129,2cyclictest795-21snmpd22:47:310
30912993129,2cyclictest795-21snmpd22:43:120
30915993029,1cyclictest795-21snmpd23:34:123
30915993029,1cyclictest795-21snmpd19:39:133
30915993028,2cyclictest795-21snmpd22:01:083
30914993029,1cyclictest795-21snmpd23:52:032
30914993029,1cyclictest795-21snmpd23:16:522
30914993029,1cyclictest795-21snmpd22:20:412
30914993029,1cyclictest795-21snmpd22:20:412
30914993029,1cyclictest795-21snmpd20:30:002
30914993029,1cyclictest795-21snmpd20:17:332
30914993029,1cyclictest795-21snmpd19:44:372
30914993029,1cyclictest16769-21kworker/2:0+events23:35:182
30913993029,1cyclictest795-21snmpd23:27:421
30913993029,1cyclictest795-21snmpd22:45:091
30913993029,1cyclictest795-21snmpd21:50:561
30913993029,1cyclictest795-21snmpd21:48:201
30913993029,1cyclictest795-21snmpd20:13:531
30913993029,1cyclictest795-21snmpd00:05:551
30913993028,2cyclictest795-21snmpd21:24:041
30913993028,2cyclictest795-21snmpd19:40:311
30913993028,2cyclictest795-21snmpd19:32:101
30912993029,1cyclictest795-21snmpd22:55:530
30912993029,1cyclictest795-21snmpd22:08:320
30912993029,1cyclictest795-21snmpd21:38:100
30912993029,1cyclictest795-21snmpd20:57:030
30912993029,1cyclictest795-21snmpd20:26:380
30912993029,1cyclictest795-21snmpd19:23:300
30912993029,1cyclictest795-21snmpd19:13:390
30912993028,2cyclictest795-21snmpd23:11:370
30912993028,2cyclictest795-21snmpd20:33:110
30912993028,2cyclictest24191-21cat21:25:160
30915992929,0cyclictest2812-21kworker/u16:1+atlantic20:50:043
30915992928,1cyclictest795-21snmpd21:15:023
30915992928,1cyclictest795-21snmpd21:04:363
30915992928,1cyclictest795-21snmpd19:11:423
30915992928,1cyclictest795-21snmpd00:34:313
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