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2026-08-25 - 10:42

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 Tue Aug 25, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303302323309,4sleep20-21swapper/219:06:132
306012316308,5sleep30-21swapper/319:09:423
303122314306,5sleep10-21swapper/119:06:011
303062313306,5sleep00-21swapper/019:05:560
30891992990,298cyclictest30497-21kworker/u16:1+efi_rts_wq20:30:141
30893992980,297cyclictest30497-21kworker/u16:1+efi_rts_wq22:00:223
30891992980,297cyclictest30497-21kworker/u16:1+efi_rts_wq20:50:131
30891992970,296cyclictest30497-21kworker/u16:1+efi_rts_wq21:55:221
30890992970,296cyclictest30497-21kworker/u16:1+efi_rts_wq20:45:130
30893992960,295cyclictest30497-21kworker/u16:1+efi_rts_wq20:35:053
30890992950,294cyclictest27562-21kworker/u16:3+efi_rts_wq00:10:140
30891992930,292cyclictest2490-21kworker/u16:2+efi_rts_wq00:00:101
30890992920,291cyclictest10578-21kworker/u16:4+efi_rts_wq19:10:120
30893992900,288cyclictest2490-21kworker/u16:2+efi_rts_wq23:10:133
30892992900,289cyclictest30497-21kworker/u16:1+efi_rts_wq21:00:132
30891992900,289cyclictest19204-21kworker/u16:0+efi_rts_wq00:05:471
30893992890,288cyclictest27562-21kworker/u16:3+efi_rts_wq00:10:143
30890992890,288cyclictest10578-21kworker/u16:4+efi_rts_wq19:29:520
30892992880,287cyclictest20172-21kworker/u16:0+efi_rts_wq20:20:132
30891992880,287cyclictest19204-21kworker/u16:0+efi_rts_wq23:55:101
30893992870,286cyclictest30497-21kworker/u16:1+efi_rts_wq22:55:133
30891992860,285cyclictest20172-21kworker/u16:0+efi_rts_wq20:15:151
30890992860,283cyclictest20172-21kworker/u16:0+efi_rts_wq21:10:120
30893992850,284cyclictest27562-21kworker/u16:3+efi_rts_wq00:20:083
30891992840,283cyclictest27562-21kworker/u16:3+efi_rts_wq00:35:111
30890992840,283cyclictest32362-21kworker/u16:0+efi_rts_wq23:00:140
30893992830,282cyclictest30497-21kworker/u16:1+efi_rts_wq21:15:153
30893992820,281cyclictest20172-21kworker/u16:0+efi_rts_wq21:50:113
30892992820,280cyclictest22158-21kworker/u16:3+efi_rts_wq22:40:122
30893992800,278cyclictest30497-21kworker/u16:1+efi_rts_wq20:25:133
30892992800,279cyclictest20172-21kworker/u16:0+efi_rts_wq22:10:112
30891992800,279cyclictest10578-21kworker/u16:4+efi_rts_wq19:25:181
30893992790,277cyclictest19204-21kworker/u16:0+efi_rts_wq23:55:093
30892992790,278cyclictest30497-21kworker/u16:1+efi_rts_wq20:30:142
30892992780,277cyclictest24712-21kworker/u16:2+efi_rts_wq22:45:322
30890992780,277cyclictest19204-21kworker/u16:0+efi_rts_wq23:55:080
30893992770,276cyclictest20172-21kworker/u16:0+efi_rts_wq21:20:133
30893992760,275cyclictest9909-21kworker/u16:1+efi_rts_wq23:35:403
30893992750,274cyclictest22158-21kworker/u16:3+efi_rts_wq22:40:123
30893992750,274cyclictest11579-21kworker/u16:2+efi_rts_wq19:50:123
30892992750,274cyclictest20172-21kworker/u16:0+efi_rts_wq21:05:122
30893992740,273cyclictest20172-21kworker/u16:0+efi_rts_wq20:55:123
30892992740,273cyclictest32362-21kworker/u16:0+efi_rts_wq23:00:132
30892992740,273cyclictest30497-21kworker/u16:1+efi_rts_wq21:30:142
30890992730,272cyclictest19204-21kworker/u16:0+efi_rts_wq00:05:150
30891992720,271cyclictest20172-21kworker/u16:0+efi_rts_wq20:05:141
30890992720,270cyclictest30497-21kworker/u16:1+efi_rts_wq22:35:290
30890992720,269cyclictest10578-21kworker/u16:4+efi_rts_wq19:15:020
30893992700,269cyclictest32586-21kworker/u16:1+efi_rts_wq00:25:143
30893992700,269cyclictest30497-21kworker/u16:1+efi_rts_wq21:35:123
30893992690,268cyclictest5028-21kworker/u16:3+efi_rts_wq23:20:383
30891992670,266cyclictest2490-21kworker/u16:2+efi_rts_wq23:15:151
30893992650,264cyclictest32586-21kworker/u16:1+efi_rts_wq00:30:133
30893992650,264cyclictest10578-21kworker/u16:4+efi_rts_wq19:30:113
30890992640,263cyclictest9909-21kworker/u16:1+efi_rts_wq23:30:120
30893992620,261cyclictest30497-21kworker/u16:1+efi_rts_wq20:10:133
30891992610,260cyclictest30497-21kworker/u16:1+efi_rts_wq22:55:141
30891992610,259cyclictest24712-21kworker/u16:2+efi_rts_wq22:45:131
30893992580,255cyclictest30497-21kworker/u16:1+efi_rts_wq21:55:133
30890992570,256cyclictest22158-21kworker/u16:3+efi_rts_wq22:40:120
30890992550,254cyclictest20172-21kworker/u16:0+efi_rts_wq21:50:110
30892992540,252cyclictest30497-21kworker/u16:1+efi_rts_wq23:05:142
30891992530,252cyclictest30497-21kworker/u16:1+efi_rts_wq19:55:151
30892992520,251cyclictest30497-21kworker/u16:1+efi_rts_wq19:19:512
30890992520,251cyclictest2490-21kworker/u16:2+efi_rts_wq23:25:120
30890992500,249cyclictest20172-21kworker/u16:0+efi_rts_wq21:15:140
30892992470,244cyclictest30497-21kworker/u16:1+efi_rts_wq21:35:122
30891992470,246cyclictest10578-21kworker/u16:4+efi_rts_wq19:45:141
30890992460,245cyclictest30497-21kworker/u16:1+efi_rts_wq21:25:110
30890992450,244cyclictest30497-21kworker/u16:1+efi_rts_wq22:30:130
30890992450,244cyclictest30497-21kworker/u16:1+efi_rts_wq19:35:130
30890992430,242cyclictest27562-21kworker/u16:3+efi_rts_wq00:15:480
30893992420,241cyclictest20172-21kworker/u16:0+efi_rts_wq22:10:243
30893992390,238cyclictest30497-21kworker/u16:1+efi_rts_wq23:05:133
30893992380,236cyclictest20172-21kworker/u16:0+efi_rts_wq22:05:143
30893992370,236cyclictest20172-21kworker/u16:0+efi_rts_wq21:00:113
30891992370,236cyclictest32586-21kworker/u16:1+efi_rts_wq00:25:501
30891992370,236cyclictest2490-21kworker/u16:2+efi_rts_wq23:35:241
30891992340,233cyclictest30497-21kworker/u16:1+efi_rts_wq19:15:141
30890992330,232cyclictest30497-21kworker/u16:1+efi_rts_wq22:20:260
30890992330,232cyclictest30497-21kworker/u16:1+efi_rts_wq22:20:260
30890992280,227cyclictest2490-21kworker/u16:2+efi_rts_wq23:20:120
30891992270,226cyclictest30497-21kworker/u16:1+efi_rts_wq21:45:171
30892992260,225cyclictest20172-21kworker/u16:0+efi_rts_wq20:15:142
30893992250,224cyclictest20172-21kworker/u16:0+efi_rts_wq22:15:133
30891992250,224cyclictest20172-21kworker/u16:0+efi_rts_wq22:05:151
30893992240,223cyclictest20172-21kworker/u16:0+efi_rts_wq22:35:113
30890992240,223cyclictest20172-21kworker/u16:0+efi_rts_wq22:15:130
30892992190,218cyclictest19204-21kworker/u16:0+efi_rts_wq23:50:432
30893992180,217cyclictest24712-21kworker/u16:2+efi_rts_wq22:45:133
30891992180,217cyclictest20172-21kworker/u16:0+efi_rts_wq22:35:121
30890992130,212cyclictest20172-21kworker/u16:0+efi_rts_wq21:20:140
30893992120,211cyclictest30497-21kworker/u16:1+efi_rts_wq21:25:163
30893992120,211cyclictest27562-21kworker/u16:3+efi_rts_wq00:35:513
30891992050,204cyclictest22158-21kworker/u16:3+efi_rts_wq22:40:301
30893992040,203cyclictest30497-21kworker/u16:1+efi_rts_wq22:30:133
30893992030,202cyclictest30497-21kworker/u16:1+efi_rts_wq19:55:143
30892992030,202cyclictest30497-21kworker/u16:1+efi_rts_wq20:50:132
30891992030,202cyclictest20172-21kworker/u16:0+efi_rts_wq20:55:111
30893992010,200cyclictest30497-21kworker/u16:1+efi_rts_wq19:44:553
30891992010,200cyclictest10578-21kworker/u16:4+efi_rts_wq19:40:131
30892992000,199cyclictest30497-21kworker/u16:1+efi_rts_wq21:45:162
30890991950,194cyclictest20172-21kworker/u16:0+efi_rts_wq20:35:130
30891991930,191cyclictest30497-21kworker/u16:1+efi_rts_wq20:40:131
30890991930,192cyclictest20172-21kworker/u16:0+efi_rts_wq20:20:130
30893991900,189cyclictest19204-21kworker/u16:0+efi_rts_wq00:00:453
30891991880,187cyclictest20172-21kworker/u16:0+efi_rts_wq22:25:141
30891991880,187cyclictest20172-21kworker/u16:0+efi_rts_wq22:25:131
30893991870,186cyclictest10578-21kworker/u16:4+efi_rts_wq19:45:133
30891991840,183cyclictest19204-21kworker/u16:0+efi_rts_wq23:40:141
30892991820,180cyclictest30497-21kworker/u16:1+efi_rts_wq20:10:132
30891991820,181cyclictest30497-21kworker/u16:1+efi_rts_wq20:04:591
30890991810,180cyclictest9909-21kworker/u16:1+efi_rts_wq23:35:230
30890991790,178cyclictest19204-21kworker/u16:0+efi_rts_wq23:45:420
30891991780,177cyclictest5028-21kworker/u16:3+efi_rts_wq23:25:391
30890991770,176cyclictest20172-21kworker/u16:0+efi_rts_wq22:25:130
30890991770,176cyclictest20172-21kworker/u16:0+efi_rts_wq22:25:130
30891991760,175cyclictest9909-21kworker/u16:1+efi_rts_wq23:30:121
30893991750,174cyclictest30497-21kworker/u16:1+efi_rts_wq20:30:043
30892991750,174cyclictest24712-21kworker/u16:2+efi_rts_wq22:55:342
30892991750,174cyclictest20172-21kworker/u16:0+efi_rts_wq20:55:122
30891991750,174cyclictest30497-21kworker/u16:1+efi_rts_wq21:00:131
30892991740,173cyclictest2490-21kworker/u16:2+efi_rts_wq23:20:122
30890991730,172cyclictest20172-21kworker/u16:0+efi_rts_wq20:15:010
30893991720,169cyclictest30497-21kworker/u16:1+efi_rts_wq22:20:133
30893991720,169cyclictest30497-21kworker/u16:1+efi_rts_wq22:20:133
30893991710,170cyclictest10578-21kworker/u16:4+efi_rts_wq19:20:133
30892991710,170cyclictest20172-21kworker/u16:0+efi_rts_wq20:05:132
30890991690,168cyclictest30497-21kworker/u16:1+efi_rts_wq19:49:560
30890991690,168cyclictest11579-21kworker/u16:2+efi_rts_wq19:50:120
30892991660,165cyclictest20172-21kworker/u16:0+efi_rts_wq21:40:132
30890991650,164cyclictest27562-21kworker/u16:3+efi_rts_wq00:20:490
30890991600,159cyclictest20172-21kworker/u16:0+efi_rts_wq22:00:140
30892991580,155cyclictest11579-21kworker/u16:2+efi_rts_wq20:00:132
30892991560,155cyclictest20172-21kworker/u16:0+efi_rts_wq22:25:272
30892991560,155cyclictest20172-21kworker/u16:0+efi_rts_wq22:25:272
30893991510,150cyclictest30497-21kworker/u16:1+efi_rts_wq20:40:063
30891991500,149cyclictest10578-21kworker/u16:4+efi_rts_wq19:20:131
30890991470,146cyclictest30497-21kworker/u16:1+efi_rts_wq21:05:130
30893991450,144cyclictest30497-21kworker/u16:1+efi_rts_wq20:50:083
30893991430,142cyclictest11579-21kworker/u16:2+efi_rts_wq20:00:133
30891991430,142cyclictest30497-21kworker/u16:1+efi_rts_wq22:20:141
30891991430,142cyclictest30497-21kworker/u16:1+efi_rts_wq22:20:131
30890991430,141cyclictest30497-21kworker/u16:1+efi_rts_wq22:50:120
30891991400,139cyclictest2490-21kworker/u16:2+efi_rts_wq23:20:121
30891991390,138cyclictest30497-21kworker/u16:1+efi_rts_wq19:14:491
30890991330,132cyclictest32362-21kworker/u16:0+efi_rts_wq23:15:370
30890991300,128cyclictest20172-21kworker/u16:0+efi_rts_wq21:40:130
30892991280,127cyclictest30497-21kworker/u16:1+efi_rts_wq20:45:072
30891991170,116cyclictest20172-21kworker/u16:0+efi_rts_wq21:40:181
30890991170,117cyclictest32586-21kworker/u16:1+efi_rts_wq00:30:500
30893991140,113cyclictest19204-21kworker/u16:0+efi_rts_wq23:40:413
30892991140,113cyclictest30497-21kworker/u16:1+efi_rts_wq19:35:132
30890991110,110cyclictest20172-21kworker/u16:0+efi_rts_wq21:45:190
30893991100,108cyclictest30497-21kworker/u16:1+efi_rts_wq22:50:323
30892991080,107cyclictest30497-21kworker/u16:1+efi_rts_wq22:50:122
30893991060,105cyclictest20172-21kworker/u16:0+efi_rts_wq21:30:163
30890991010,100cyclictest10578-21kworker/u16:4+efi_rts_wq19:30:110
3089299990,98cyclictest2490-21kworker/u16:2+efi_rts_wq23:35:242
30892993330,2cyclictest809-21snmpd19:10:512
30892993229,2cyclictest809-21snmpd22:01:202
30892993229,2cyclictest809-21snmpd00:10:332
30891993230,2cyclictest809-21snmpd23:10:341
30891993229,2cyclictest809-21snmpd21:29:381
30890993230,2cyclictest809-21snmpd22:56:040
30893993130,1cyclictest809-21snmpd23:17:413
30893993129,2cyclictest809-21snmpd19:25:523
30892993130,1cyclictest809-21snmpd23:26:362
30892993129,2cyclictest809-21snmpd20:36:302
30891993130,1cyclictest809-21snmpd21:39:481
30891993129,2cyclictest809-21snmpd00:33:401
30891993129,1cyclictest809-21snmpd21:15:441
30891993128,2cyclictest809-21snmpd20:29:211
30890993130,1cyclictest809-21snmpd23:09:010
30890993130,1cyclictest2127-21kworker/0:3+events23:11:210
30890993129,2cyclictest809-21snmpd20:52:030
30890993129,2cyclictest809-21snmpd20:41:300
30890993129,2cyclictest809-21snmpd19:23:150
30893993029,1cyclictest809-21snmpd21:41:563
30893993029,1cyclictest809-21snmpd19:18:153
30893993029,1cyclictest809-21snmpd19:12:033
30892993029,1cyclictest809-21snmpd00:32:012
30892993028,2cyclictest809-21snmpd23:18:452
30892993028,2cyclictest809-21snmpd22:37:372
30892993028,2cyclictest809-21snmpd19:32:462
30892993027,2cyclictest809-21snmpd21:55:422
30892993027,2cyclictest809-21snmpd00:00:002
30891993029,1cyclictest809-21snmpd21:51:591
30891993029,1cyclictest809-21snmpd21:06:201
30891993029,1cyclictest809-21snmpd19:36:171
30891993029,1cyclictest809-21snmpd19:30:581
30891993029,1cyclictest25181-21cat20:10:151
30891993028,2cyclictest809-21snmpd21:33:461
30891993028,2cyclictest809-21snmpd20:24:411
30890993030,0cyclictest9210-21kworker/0:2+events22:05:130
30890993029,1cyclictest809-21snmpd23:41:530
30890993029,1cyclictest809-21snmpd22:11:390
30890993029,1cyclictest809-21snmpd20:57:060
30890993029,1cyclictest24795-21kworker/0:0+events22:45:090
30893992928,1cyclictest809-21snmpd23:53:363
30893992928,1cyclictest809-21snmpd23:46:303
30893992928,1cyclictest809-21snmpd23:31:563
30893992927,2cyclictest809-21snmpd20:06:083
30892992928,1cyclictest809-21snmpd23:33:292
30892992928,1cyclictest809-21snmpd22:34:032
30892992928,1cyclictest809-21snmpd21:17:552
30892992928,1cyclictest809-21snmpd19:49:372
30892992928,1cyclictest809-21snmpd19:22:182
30891992927,2cyclictest809-21snmpd23:52:391
30891992927,1cyclictest809-21snmpd23:47:371
30890992929,0cyclictest22204-21kworker/0:0+events00:01:130
30890992929,0cyclictest19394-21kworker/0:2+events23:50:330
30890992928,1cyclictest809-21snmpd21:36:020
30890992928,1cyclictest809-21snmpd21:31:370
30890992928,1cyclictest809-21snmpd20:30:200
30890992928,1cyclictest32587-21kworker/0:0+events00:39:310
30890992927,2cyclictest809-21snmpd19:58:380
30893992827,1cyclictest809-21snmpd23:26:173
30893992826,2cyclictest809-21snmpd19:39:043
30892992828,0cyclictest30497-21kworker/u16:1+atlantic19:56:452
30892992827,1cyclictest809-21snmpd00:19:232
30892992826,2cyclictest809-21snmpd22:07:272
30892992826,2cyclictest809-21snmpd21:25:012
30892992826,2cyclictest809-21snmpd00:21:012
30891992828,0cyclictest30497-21kworker/u16:1+atlantic22:16:521
30891992828,0cyclictest27562-21kworker/u16:3+atlantic00:19:121
30891992828,0cyclictest20172-21kworker/u16:0+atlantic21:14:591
30891992826,2cyclictest31157-21cat00:10:151
30890992828,0cyclictest32587-21kworker/0:0+events00:25:150
30890992827,1cyclictest809-21snmpd19:43:070
30890992825,2cyclictest809-21snmpd20:26:470
30893992726,1cyclictest809-21snmpd21:07:103
30893992726,1cyclictest809-21snmpd20:46:093
30893992726,1cyclictest809-21snmpd20:22:563
30892992726,1cyclictest809-21snmpd23:41:352
30892992726,1cyclictest809-21snmpd00:35:202
30892992725,2cyclictest809-21snmpd19:25:042
30891992727,0cyclictest75050irq/134-enp1s023:07:121
30891992726,1cyclictest809-21snmpd19:51:221
30890992726,1cyclictest9210-21kworker/0:2+events21:00:150
30893992626,0cyclictest74850irq/132-enp1s023:00:313
30893992625,1cyclictest809-21snmpd21:12:583
30893992625,1cyclictest809-21snmpd00:18:523
30892992624,2cyclictest809-21snmpd23:57:042
30892992624,2cyclictest809-21snmpd21:50:412
30891992625,1cyclictest809-21snmpd22:31:301
30890992626,0cyclictest9210-21kworker/0:2+events21:58:550
30890992626,0cyclictest9210-21kworker/0:2+events20:00:030
30893992525,0cyclictest809-21snmpd00:05:273
30893992524,1cyclictest809-21snmpd22:25:453
30893992524,1cyclictest809-21snmpd22:25:453
30892992523,2cyclictest809-21snmpd23:46:212
30892992523,2cyclictest809-21snmpd19:44:492
30891992525,0cyclictest20172-21kworker/u16:0+atlantic22:13:191
30890992525,0cyclictest9210-21kworker/0:2+events20:11:510
30893992423,1cyclictest809-21snmpd20:16:533
30892992423,1cyclictest809-21snmpd21:11:192
30892992423,1cyclictest809-21snmpd20:40:272
30892992423,1cyclictest809-21snmpd19:50:132
30891992423,1cyclictest809-21snmpd22:51:041
30890992424,0cyclictest9210-21kworker/0:2+events20:07:550
30891992322,1cyclictest809-21snmpd21:21:401
30892992221,1cyclictest809-21snmpd23:12:372
30892992119,2cyclictest809-21snmpd21:21:492
30891992018,2cyclictest809-21snmpd23:04:011
30892991817,1cyclictest809-21snmpd20:25:182
30892991716,1cyclictest809-21snmpd00:29:562
30892991615,1cyclictest809-21snmpd22:20:212
30892991615,1cyclictest809-21snmpd22:20:212
308939999,0cyclictest30497-21kworker/u16:1+atlantic21:48:253
308919988,0cyclictest0-21swapper/120:45:121
308929965,1cyclictest29063-21netstat00:05:202
308929965,1cyclictest13656-21chrt22:19:442
308919965,1cyclictest1380-21cat00:20:101
308919960,6cyclictest7216-21chrt22:01:371
308919954,1cyclictest4074-21seq20:36:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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