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2026-08-21 - 08:41

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 792 highest latencies:
System rackcslot3s.osadl.org (updated Fri Aug 21, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
76982324318,4sleep20-21swapper/219:08:222
77312317303,11sleep00-21swapper/019:08:480
77342315307,5sleep30-21swapper/319:08:513
75302314307,5sleep10-21swapper/119:06:131
8092993010,299cyclictest17441-21kworker/u16:2+efi_rts_wq23:25:121
8092993000,298cyclictest21391-21kworker/u16:0+efi_rts_wq19:15:141
8092992980,297cyclictest20179-21kworker/u16:0+efi_rts_wq00:35:581
8094992970,296cyclictest28926-21kworker/u16:1+efi_rts_wq00:25:563
8092992960,295cyclictest26529-21kworker/u16:0+efi_rts_wq23:50:481
8092992950,294cyclictest14628-21kworker/u16:3+efi_rts_wq21:40:131
8094992940,293cyclictest14628-21kworker/u16:3+efi_rts_wq20:15:053
8091992940,293cyclictest28926-21kworker/u16:1+efi_rts_wq00:00:500
8091992940,293cyclictest21391-21kworker/u16:0+efi_rts_wq19:45:120
8094992930,292cyclictest21391-21kworker/u16:0+efi_rts_wq21:10:123
8091992930,292cyclictest14628-21kworker/u16:3+efi_rts_wq20:10:040
8092992920,290cyclictest14822-21kworker/u16:3+efi_rts_wq23:15:141
8091992920,290cyclictest28926-21kworker/u16:1+efi_rts_wq23:40:130
8094992910,290cyclictest14628-21kworker/u16:3+efi_rts_wq20:00:123
8093992910,290cyclictest21391-21kworker/u16:0+efi_rts_wq22:15:292
8093992890,288cyclictest14628-21kworker/u16:3+efi_rts_wq19:55:132
8092992880,287cyclictest21391-21kworker/u16:0+efi_rts_wq20:15:121
8091992880,286cyclictest17441-21kworker/u16:2+efi_rts_wq23:30:450
8091992870,286cyclictest14628-21kworker/u16:3+efi_rts_wq20:55:120
8091992870,286cyclictest14628-21kworker/u16:3+efi_rts_wq20:40:130
8094992860,285cyclictest21391-21kworker/u16:0+efi_rts_wq20:45:133
8091992860,285cyclictest21391-21kworker/u16:0+efi_rts_wq20:50:110
8092992850,284cyclictest21391-21kworker/u16:0+efi_rts_wq21:35:141
8094992840,283cyclictest21391-21kworker/u16:0+efi_rts_wq20:30:123
8092992840,283cyclictest14628-21kworker/u16:3+efi_rts_wq19:25:141
8091992840,283cyclictest21391-21kworker/u16:0+efi_rts_wq20:35:120
8092992830,282cyclictest14628-21kworker/u16:3+efi_rts_wq21:45:131
8094992820,281cyclictest21391-21kworker/u16:0+efi_rts_wq19:55:013
8091992820,281cyclictest21391-21kworker/u16:0+efi_rts_wq21:10:140
8094992810,280cyclictest20179-21kworker/u16:0+efi_rts_wq00:35:143
8092992810,280cyclictest21391-21kworker/u16:0+efi_rts_wq22:50:121
8092992810,280cyclictest12308-21kworker/u16:0+efi_rts_wq23:05:131
8091992810,280cyclictest21391-21kworker/u16:0+efi_rts_wq22:25:130
8091992810,279cyclictest23890-21kworker/u16:3+efi_rts_wq23:35:150
8094992800,279cyclictest12308-21kworker/u16:0+efi_rts_wq23:05:403
8092992800,279cyclictest21391-21kworker/u16:0+efi_rts_wq22:25:131
8093992790,278cyclictest21391-21kworker/u16:0+efi_rts_wq22:50:122
8091992790,278cyclictest28926-21kworker/u16:1+efi_rts_wq00:15:540
8091992750,274cyclictest21391-21kworker/u16:0+efi_rts_wq21:55:120
8092992740,273cyclictest7194-21kworker/u16:1+efi_rts_wq23:20:421
8091992740,271cyclictest14628-21kworker/u16:3+efi_rts_wq21:50:120
8094992720,271cyclictest7194-21kworker/u16:1+efi_rts_wq23:20:123
8091992720,271cyclictest14628-21kworker/u16:3+efi_rts_wq22:40:110
8093992710,268cyclictest26529-21kworker/u16:0+efi_rts_wq23:45:142
8092992710,269cyclictest28926-21kworker/u16:1+efi_rts_wq00:10:111
8094992700,269cyclictest21391-21kworker/u16:0+efi_rts_wq19:15:143
8091992700,269cyclictest28926-21kworker/u16:1+efi_rts_wq00:30:130
8094992670,264cyclictest26529-21kworker/u16:0+efi_rts_wq23:55:143
8091992670,266cyclictest5356-21kworker/u16:2+efi_rts_wq00:05:150
8091992670,264cyclictest21391-21kworker/u16:0+efi_rts_wq21:20:110
8093992640,263cyclictest28926-21kworker/u16:1+efi_rts_wq00:20:132
8094992600,257cyclictest14628-21kworker/u16:3+efi_rts_wq22:00:143
8091992600,259cyclictest7194-21kworker/u16:1+efi_rts_wq23:10:400
8091992600,259cyclictest14628-21kworker/u16:3+efi_rts_wq22:30:310
8094992590,258cyclictest28926-21kworker/u16:1+efi_rts_wq00:15:153
8091992590,258cyclictest14628-21kworker/u16:3+efi_rts_wq19:40:110
8094992570,256cyclictest23890-21kworker/u16:3+efi_rts_wq23:30:133
8094992560,254cyclictest28926-21kworker/u16:1+efi_rts_wq00:00:123
8093992560,255cyclictest14628-21kworker/u16:3+efi_rts_wq22:45:142
8094992550,254cyclictest28926-21kworker/u16:1+efi_rts_wq23:50:153
8092992540,252cyclictest9793-21kworker/u16:2+efi_rts_wq23:00:121
8091992530,251cyclictest21391-21kworker/u16:0+efi_rts_wq20:45:130
8094992520,251cyclictest21391-21kworker/u16:0+efi_rts_wq19:10:123
8093992510,250cyclictest7194-21kworker/u16:1+efi_rts_wq23:10:112
8094992490,248cyclictest9793-21kworker/u16:2+efi_rts_wq23:00:133
8094992450,244cyclictest14628-21kworker/u16:3+efi_rts_wq20:20:113
8092992440,243cyclictest14628-21kworker/u16:3+efi_rts_wq19:50:121
8094992430,242cyclictest14628-21kworker/u16:3+efi_rts_wq22:40:123
8092992420,241cyclictest21391-21kworker/u16:0+efi_rts_wq22:10:131
8091992410,239cyclictest24243-21kworker/u16:1+efi_rts_wq19:15:010
8091992400,239cyclictest21391-21kworker/u16:0+efi_rts_wq20:05:140
8092992390,238cyclictest26529-21kworker/u16:0+efi_rts_wq23:45:141
8092992380,237cyclictest14628-21kworker/u16:3+efi_rts_wq20:45:131
8091992380,237cyclictest21391-21kworker/u16:0+efi_rts_wq21:25:150
8091992350,234cyclictest14628-21kworker/u16:3+efi_rts_wq20:25:120
8094992340,233cyclictest5356-21kworker/u16:2+efi_rts_wq00:05:153
8094992320,231cyclictest14628-21kworker/u16:3+efi_rts_wq21:30:143
8093992320,231cyclictest21391-21kworker/u16:0+efi_rts_wq22:40:342
8094992260,225cyclictest21391-21kworker/u16:0+efi_rts_wq19:45:123
8094992250,224cyclictest14628-21kworker/u16:3+efi_rts_wq22:20:143
8093992240,221cyclictest21391-21kworker/u16:0+efi_rts_wq21:05:132
8093992240,221cyclictest21391-21kworker/u16:0+efi_rts_wq21:05:122
8092992240,223cyclictest21391-21kworker/u16:0+efi_rts_wq21:55:121
8091992240,223cyclictest21391-21kworker/u16:0+efi_rts_wq22:10:270
8094992220,221cyclictest14628-21kworker/u16:3+efi_rts_wq22:35:133
8094992210,220cyclictest26529-21kworker/u16:0+efi_rts_wq23:40:133
8092992210,220cyclictest24243-21kworker/u16:1+efi_rts_wq19:20:111
8092992210,220cyclictest21391-21kworker/u16:0+efi_rts_wq20:55:121
8094992190,218cyclictest21391-21kworker/u16:0+efi_rts_wq20:50:123
8091992150,214cyclictest14628-21kworker/u16:3+efi_rts_wq19:50:130
8092992140,213cyclictest28926-21kworker/u16:1+efi_rts_wq00:25:141
8091992130,212cyclictest14628-21kworker/u16:3+efi_rts_wq21:40:210
8094992110,210cyclictest14628-21kworker/u16:3+efi_rts_wq19:35:103
8091992110,210cyclictest28926-21kworker/u16:1+efi_rts_wq00:10:110
8094992100,209cyclictest14628-21kworker/u16:3+efi_rts_wq21:15:133
8093992100,209cyclictest5356-21kworker/u16:2+efi_rts_wq00:10:522
8093992070,206cyclictest14628-21kworker/u16:3+efi_rts_wq22:20:142
8091992070,206cyclictest21391-21kworker/u16:0+efi_rts_wq22:05:140
8092992050,204cyclictest21391-21kworker/u16:0+efi_rts_wq20:00:131
8091992010,200cyclictest21391-21kworker/u16:0+efi_rts_wq21:30:190
8091992010,200cyclictest14628-21kworker/u16:3+efi_rts_wq20:20:120
8094991990,198cyclictest14628-21kworker/u16:3+efi_rts_wq21:25:183
8092991980,197cyclictest21391-21kworker/u16:0+efi_rts_wq21:00:121
8094991970,196cyclictest21391-21kworker/u16:0+efi_rts_wq22:55:123
8093991970,194cyclictest28926-21kworker/u16:1+efi_rts_wq23:50:142
8092991970,196cyclictest21391-21kworker/u16:0+efi_rts_wq22:55:121
8094991920,191cyclictest21391-21kworker/u16:0+efi_rts_wq19:30:103
8094991910,190cyclictest21391-21kworker/u16:0+efi_rts_wq21:20:123
8093991910,190cyclictest21391-21kworker/u16:0+efi_rts_wq19:10:112
8093991900,189cyclictest21391-21kworker/u16:0+efi_rts_wq20:30:122
8093991900,189cyclictest14628-21kworker/u16:3+efi_rts_wq21:45:132
8092991880,187cyclictest23890-21kworker/u16:3+efi_rts_wq23:35:151
8093991870,186cyclictest14628-21kworker/u16:3+efi_rts_wq20:45:132
8091991870,186cyclictest21391-21kworker/u16:0+efi_rts_wq22:15:120
8091991850,182cyclictest14628-21kworker/u16:3+efi_rts_wq22:50:370
8094991840,183cyclictest5356-21kworker/u16:2+efi_rts_wq00:20:553
8092991840,183cyclictest28926-21kworker/u16:1+efi_rts_wq00:30:121
8091991830,182cyclictest21391-21kworker/u16:0+efi_rts_wq21:05:140
8091991830,182cyclictest21391-21kworker/u16:0+efi_rts_wq21:05:130
8094991810,180cyclictest21391-21kworker/u16:0+efi_rts_wq22:30:133
8092991810,180cyclictest28926-21kworker/u16:1+efi_rts_wq00:15:141
8092991800,177cyclictest14628-21kworker/u16:3+efi_rts_wq22:00:131
8092991780,177cyclictest21391-21kworker/u16:0+efi_rts_wq20:25:061
8094991750,174cyclictest26529-21kworker/u16:0+efi_rts_wq23:35:463
8094991720,171cyclictest21391-21kworker/u16:0+efi_rts_wq21:00:123
8091991710,170cyclictest21391-21kworker/u16:0+efi_rts_wq19:20:120
8091991710,170cyclictest14628-21kworker/u16:3+efi_rts_wq19:34:580
8091991700,169cyclictest24243-21kworker/u16:1+efi_rts_wq19:10:120
8092991680,166cyclictest28926-21kworker/u16:1+efi_rts_wq23:40:121
8092991580,156cyclictest21391-21kworker/u16:0+efi_rts_wq21:20:121
8093991540,153cyclictest28926-21kworker/u16:1+efi_rts_wq23:55:502
8093991530,152cyclictest21391-21kworker/u16:0+efi_rts_wq20:10:112
8094991500,149cyclictest14628-21kworker/u16:3+efi_rts_wq22:45:363
8094991490,148cyclictest21391-21kworker/u16:0+efi_rts_wq19:20:123
8094991490,145cyclictest14628-21kworker/u16:3+efi_rts_wq20:25:123
8092991450,144cyclictest26529-21kworker/u16:0+efi_rts_wq23:55:141
8093991430,142cyclictest14628-21kworker/u16:3+efi_rts_wq20:05:032
8092991430,142cyclictest21391-21kworker/u16:0+efi_rts_wq20:35:121
8092991430,142cyclictest21391-21kworker/u16:0+efi_rts_wq19:39:591
8091991420,141cyclictest21391-21kworker/u16:0+efi_rts_wq20:15:110
8091991420,141cyclictest14628-21kworker/u16:3+efi_rts_wq21:15:160
8094991400,139cyclictest14628-21kworker/u16:3+efi_rts_wq20:35:083
8093991380,137cyclictest21391-21kworker/u16:0+efi_rts_wq22:05:272
8093991380,137cyclictest21391-21kworker/u16:0+efi_rts_wq21:35:142
8093991350,134cyclictest21391-21kworker/u16:0+efi_rts_wq21:25:142
8093991350,134cyclictest17441-21kworker/u16:2+efi_rts_wq23:25:122
8093991310,129cyclictest14628-21kworker/u16:3+efi_rts_wq22:30:122
8091991250,124cyclictest26529-21kworker/u16:0+efi_rts_wq23:45:140
8092991220,121cyclictest21391-21kworker/u16:0+efi_rts_wq19:44:591
8092991220,121cyclictest14628-21kworker/u16:3+efi_rts_wq22:40:111
8092991220,119cyclictest23890-21kworker/u16:3+efi_rts_wq23:30:121
8094991210,120cyclictest14628-21kworker/u16:3+efi_rts_wq21:40:133
8092991210,120cyclictest21391-21kworker/u16:0+efi_rts_wq20:40:091
8093991200,119cyclictest14822-21kworker/u16:3+efi_rts_wq23:15:142
8094991180,117cyclictest7194-21kworker/u16:1+efi_rts_wq23:25:123
8093991180,117cyclictest14628-21kworker/u16:3+efi_rts_wq19:25:142
8091991180,117cyclictest21391-21kworker/u16:0+efi_rts_wq19:55:130
8093991140,113cyclictest28926-21kworker/u16:1+efi_rts_wq00:05:522
8091991130,111cyclictest21391-21kworker/u16:0+efi_rts_wq20:00:130
8092991110,110cyclictest21391-21kworker/u16:0+efi_rts_wq19:50:001
8092991110,110cyclictest14628-21kworker/u16:3+efi_rts_wq21:50:241
8091991110,110cyclictest14822-21kworker/u16:3+efi_rts_wq23:15:140
8093991070,106cyclictest14628-21kworker/u16:3+efi_rts_wq21:00:112
8094991050,104cyclictest23890-21kworker/u16:3+efi_rts_wq23:45:483
8092993330,2cyclictest809-21snmpd21:14:091
8092993330,2cyclictest3649-21cat22:45:161
8093993229,2cyclictest809-21snmpd21:55:342
8093993229,2cyclictest809-21snmpd19:31:112
8094993129,2cyclictest809-21snmpd21:07:473
8094993129,2cyclictest809-21snmpd21:07:463
8093993130,1cyclictest809-21snmpd23:41:542
8093993129,2cyclictest809-21snmpd23:03:562
8093993129,2cyclictest809-21snmpd22:11:072
8093993129,2cyclictest809-21snmpd21:20:212
8093993129,2cyclictest809-21snmpd20:20:212
8093993129,2cyclictest809-21snmpd19:43:112
8092993129,2cyclictest809-21snmpd22:35:231
8092993129,2cyclictest809-21snmpd19:55:221
8091993130,1cyclictest809-21snmpd00:21:540
8091993129,2cyclictest809-21snmpd22:37:200
8091993129,2cyclictest809-21snmpd21:39:180
8094993029,1cyclictest809-21snmpd21:54:523
8094993028,2cyclictest809-21snmpd21:57:183
8094993027,3cyclictest809-21snmpd23:12:543
8093993029,1cyclictest809-21snmpd22:57:062
8093993029,1cyclictest809-21snmpd21:14:272
8093993029,1cyclictest809-21snmpd20:55:562
8093993029,1cyclictest809-21snmpd20:19:522
8093993029,1cyclictest809-21snmpd19:46:362
8093993029,1cyclictest809-21snmpd19:21:382
8093993029,1cyclictest809-21snmpd00:36:002
8093993029,1cyclictest809-21snmpd00:17:572
8093993028,2cyclictest809-21snmpd23:30:062
8093993027,2cyclictest809-21snmpd20:42:162
8092993029,1cyclictest5599-21kworker/1:0+events22:32:131
8091993029,1cyclictest809-21snmpd21:01:530
8091993029,1cyclictest809-21snmpd00:35:390
8091993029,1cyclictest809-21snmpd00:26:060
8091993028,2cyclictest809-21snmpd23:53:560
8091993028,2cyclictest809-21snmpd23:23:510
8091993028,2cyclictest24499-21cat22:20:150
8094992929,0cyclictest809-21snmpd22:52:063
8094992928,1cyclictest809-21snmpd19:43:233
8093992928,1cyclictest809-21snmpd22:01:522
8093992928,1cyclictest809-21snmpd21:42:042
8093992928,1cyclictest809-21snmpd21:33:422
8093992928,1cyclictest809-21snmpd19:17:242
8093992928,1cyclictest809-21snmpd00:32:382
8093992927,2cyclictest809-21snmpd19:50:172
8093992927,2cyclictest809-21snmpd00:02:432
8092992929,0cyclictest5599-21kworker/1:0+events21:05:161
8092992929,0cyclictest5599-21kworker/1:0+events21:05:161
8092992928,1cyclictest809-21snmpd22:16:171
8092992928,1cyclictest809-21snmpd20:51:021
8092992928,1cyclictest2665-21kworker/1:1+events23:10:131
8091992929,0cyclictest809-21snmpd19:39:090
8091992928,1cyclictest809-21snmpd22:49:450
8091992927,2cyclictest809-21snmpd19:26:360
8094992827,1cyclictest809-21snmpd22:29:533
8094992827,1cyclictest809-21snmpd19:52:233
8094992827,1cyclictest20344-21cat22:10:163
8094992826,2cyclictest809-21snmpd23:19:223
8093992827,1cyclictest809-21snmpd23:24:062
8093992827,1cyclictest809-21snmpd21:16:472
8093992827,1cyclictest809-21snmpd20:01:572
8093992825,3cyclictest809-21snmpd23:06:062
8092992828,0cyclictest5599-21kworker/1:0+events22:09:001
8092992828,0cyclictest4846-21kworker/1:0+events00:21:151
8092992827,1cyclictest809-21snmpd21:25:241
8092992827,1cyclictest809-21snmpd20:22:371
8092992827,1cyclictest809-21snmpd19:14:521
8092992826,2cyclictest809-21snmpd21:18:241
8091992827,1cyclictest809-21snmpd21:47:040
8091992826,2cyclictest813-21ntpd22:03:530
8094992726,1cyclictest809-21snmpd22:15:233
8094992726,1cyclictest809-21snmpd22:05:453
8093992726,1cyclictest809-21snmpd00:29:092
8092992726,1cyclictest809-21snmpd20:32:381
8091992725,2cyclictest809-21snmpd23:07:150
8093992624,2cyclictest809-21snmpd22:37:322
8092992625,1cyclictest809-21snmpd19:30:201
8091992626,0cyclictest75050irq/134-enp1s022:56:280
8091992625,1cyclictest809-21snmpd23:58:440
8094992524,1cyclictest809-21snmpd20:05:373
8094992524,1cyclictest809-21snmpd00:30:453
8093992524,1cyclictest809-21snmpd21:50:162
8093992524,1cyclictest809-21snmpd20:53:552
8092992525,0cyclictest4846-21kworker/1:0+events00:01:191
8092992524,1cyclictest809-21snmpd20:07:401
8091992524,1cyclictest809-21snmpd23:00:320
8091992523,2cyclictest809-21snmpd23:25:070
8094992422,2cyclictest809-21snmpd21:37:233
8093992423,1cyclictest809-21snmpd23:39:222
8093992423,1cyclictest809-21snmpd22:27:022
8093992423,1cyclictest809-21snmpd20:39:112
8093992423,1cyclictest809-21snmpd19:36:542
8092992422,2cyclictest809-21snmpd22:24:221
8094992322,1cyclictest809-21snmpd21:49:273
8092992322,1cyclictest809-21snmpd21:32:331
8094992020,0cyclictest14628-21kworker/u16:3+atlantic20:40:473
8094991917,2cyclictest809-21snmpd00:10:293
8092991816,2cyclictest809-21snmpd00:09:471
8091991614,2cyclictest813-21ntpd20:33:550
8094991111,0cyclictest809-21snmpd20:55:053
8094991111,0cyclictest809-21snmpd19:28:273
8094991010,0cyclictest14628-21kworker/u16:3+atlantic20:11:393
80929988,0cyclictest25348-21kworker/1:1+events20:10:161
80939954,1cyclictest8202-21cut20:25:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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