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2026-06-03 - 16:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack3slot6s.osadl.org (updated Wed Jun 03, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8578211794,18sleep00-21swapper/007:07:320
8757211698,12sleep30-21swapper/307:09:503
8686210993,11sleep10-21swapper/107:08:571
8139210785,15sleep20-21swapper/207:06:002
15142720,0sleep10-21swapper/110:59:581
222142700,0sleep30-21swapper/312:27:373
8800994629,16cyclictest0-21swapper/308:00:113
284692320,1sleep0101ktimersoftd/009:46:010
170092270,1sleep217000-21ssh11:15:142
880099230,21cyclictest25087-21diskmemload11:00:123
880099230,18cyclictest0-21swapper/309:33:043
879899230,6cyclictest0-21swapper/108:54:051
27502230,1sleep10-21swapper/112:07:321
880099220,17cyclictest0-21swapper/309:17:043
880099220,17cyclictest0-21swapper/308:27:053
879899223,2cyclictest0-21swapper/110:35:041
880099210,3cyclictest0-21swapper/312:38:013
880099210,19cyclictest0-21swapper/311:40:123
880099210,15cyclictest0-21swapper/311:57:053
8799992118,2cyclictest4974-21kworker/u8:007:22:042
8799992118,2cyclictest12915-21kworker/u8:012:32:062
879899213,2cyclictest21-21rcuc/109:50:051
879899212,2cyclictest0-21swapper/107:12:041
879899211,18cyclictest0-21swapper/111:08:051
879899210,4cyclictest0-21swapper/110:43:051
260862210,0sleep20-21swapper/211:58:192
880099200,3cyclictest0-21swapper/310:24:053
880099200,16cyclictest0-21swapper/308:47:053
880099200,16cyclictest0-21swapper/308:47:043
8799992017,2cyclictest31938-21kworker/u8:111:02:042
8799992017,2cyclictest19928-21kworker/u8:010:18:022
8799992017,2cyclictest13364-21kworker/u8:108:57:042
879999200,18cyclictest0-21swapper/211:34:052
879899203,16cyclictest0-21swapper/108:01:041
879899202,2cyclictest0-21swapper/112:33:051
879899202,2cyclictest0-21swapper/112:03:041
879899202,2cyclictest0-21swapper/109:04:051
879899202,15cyclictest0-21swapper/110:09:051
879899201,2cyclictest0-21swapper/110:23:041
879899200,4cyclictest0-21swapper/110:30:051
879899200,3cyclictest0-21swapper/110:14:051
880099192,2cyclictest0-21swapper/309:59:043
880099190,18cyclictest0-21swapper/310:25:053
880099190,18cyclictest0-21swapper/310:11:053
880099190,18cyclictest0-21swapper/309:44:053
880099190,14cyclictest0-21swapper/312:16:023
880099190,14cyclictest0-21swapper/309:13:053
8799991916,2cyclictest6353-21kworker/u8:212:22:052
8799991916,2cyclictest6318-21kworker/u8:009:32:042
8799991916,2cyclictest31758-21kworker/u8:210:48:042
8799991916,2cyclictest26032-21kworker/u8:112:36:012
8799991916,2cyclictest24321-21kworker/u8:012:00:042
8799991916,2cyclictest23290-21kworker/u8:209:12:062
8799991916,2cyclictest13364-21kworker/u8:109:00:052
8799991916,2cyclictest12182-21kworker/u8:310:14:012
879999190,17cyclictest0-21swapper/210:02:052
8798991916,2cyclictest10696-21kworker/u8:211:44:051
879899191,2cyclictest0-21swapper/110:19:051
8797991916,2cyclictest12182-21kworker/u8:310:06:060
8800991814,2cyclictest25087-21diskmemload12:13:023
880099180,8cyclictest0-21swapper/310:49:043
880099180,2cyclictest0-21swapper/310:31:043
880099180,17cyclictest0-21swapper/311:54:023
880099180,17cyclictest0-21swapper/309:27:053
8799991815,2cyclictest31758-21kworker/u8:210:53:052
8799991815,2cyclictest17224-21kworker/u8:011:20:062
8799991815,2cyclictest14678-21kworker/u8:208:22:042
8799991815,2cyclictest14678-21kworker/u8:207:54:052
879999180,2cyclictest7434-21ssh12:12:042
879999180,2cyclictest0-21swapper/210:58:062
879999180,16cyclictest0-21swapper/209:40:052
879999180,16cyclictest0-21swapper/209:36:062
879899182,2cyclictest0-21swapper/108:13:041
879899182,2cyclictest0-21swapper/107:32:051
879899181,2cyclictest0-21swapper/111:47:051
879899181,15cyclictest0-21swapper/109:10:111
8797991815,2cyclictest6485-21kworker/u8:110:02:040
8797991815,2cyclictest6353-21kworker/u8:212:12:050
8797991815,2cyclictest31758-21kworker/u8:210:58:060
8797991815,2cyclictest26103-21kworker/u8:211:34:050
8797991815,2cyclictest12915-21kworker/u8:012:28:040
8797991815,2cyclictest12381-21kworker/u8:209:40:050
8800991713,3cyclictest12182-21kworker/u8:310:15:053
880099170,15cyclictest0-21swapper/309:21:053
880099170,12cyclictest0-21swapper/308:32:023
8799991714,2cyclictest29411-21kworker/u8:108:14:042
8799991714,2cyclictest26103-21kworker/u8:211:26:012
8799991714,2cyclictest2452-21kworker/u8:207:15:052
8799991714,2cyclictest17160-21kworker/u8:107:31:042
8799991714,2cyclictest10881-21kworker/u8:208:46:062
8799991714,2cyclictest10881-21kworker/u8:208:46:052
8799991714,2cyclictest10696-21kworker/u8:211:45:052
8799991714,2cyclictest10696-21kworker/u8:211:42:052
8799991714,2cyclictest10197-21kworker/u8:310:44:022
879999171,14cyclictest23293-21munin-node2
879999170,2cyclictest0-21swapper/211:54:052
879999170,15cyclictest0-21swapper/210:21:042
879899172,2cyclictest0-21swapper/108:33:051
879899170,2cyclictest0-21swapper/108:28:021
8797991714,2cyclictest6353-21kworker/u8:212:19:040
8797991714,2cyclictest6318-21kworker/u8:009:34:050
8797991714,2cyclictest19928-21kworker/u8:010:18:060
8797991714,2cyclictest17795-21kworker/u8:111:54:050
880099162,2cyclictest0-21swapper/308:56:023
8800991613,2cyclictest12182-21kworker/u8:310:03:053
880099160,4cyclictest0-21swapper/309:50:223
880099160,15cyclictest0-21swapper/309:38:053
880099160,15cyclictest0-21swapper/307:30:043
880099160,12cyclictest0-21swapper/312:07:053
880099160,12cyclictest0-21swapper/310:42:053
880099160,11cyclictest0-21swapper/311:25:053
880099160,11cyclictest0-21swapper/309:08:043
8799991613,2cyclictest13364-21kworker/u8:108:41:052
879999160,2cyclictest0-21swapper/209:57:042
879999160,2cyclictest0-21swapper/209:24:042
8798991613,2cyclictest23-21ksoftirqd/111:30:111
879899161,2cyclictest0-21swapper/108:06:061
8798991611,3cyclictest8600-21turbostat09:59:591
879899161,13cyclictest0-21swapper/112:16:181
879899160,2cyclictest0-21swapper/112:27:041
879899160,1cyclictest0-21swapper/107:53:051
879899160,15cyclictest0-21swapper/109:05:041
8797991613,2cyclictest6818-21kworker/u8:008:24:050
8797991613,2cyclictest6485-21kworker/u8:109:57:050
8797991613,2cyclictest31865-21kworker/u8:109:24:040
8797991613,2cyclictest31758-21kworker/u8:210:37:040
8797991613,2cyclictest12381-21kworker/u8:209:36:050
8800991512,2cyclictest31758-21kworker/u8:210:36:053
879999151,2cyclictest0-21swapper/212:28:042
879999151,2cyclictest0-21swapper/212:19:042
8799991512,2cyclictest10881-21kworker/u8:208:53:052
8799991512,2cyclictest0-21swapper/210:32:352
879999150,3cyclictest0-21swapper/209:50:152
879999150,2cyclictest0-21swapper/210:37:042
879999150,2cyclictest0-21swapper/209:19:052
879999150,14cyclictest0-21swapper/211:11:042
879999150,14cyclictest0-21swapper/207:38:052
879899155,2cyclictest0-21swapper/111:15:111
879899152,2cyclictest0-21swapper/107:17:051
879899151,2cyclictest0-21swapper/107:55:051
879899151,12cyclictest17879-21apt-get11:50:101
879899150,4cyclictest0-21swapper/111:12:401
879899150,2cyclictest0-21swapper/112:38:061
879899150,2cyclictest0-21swapper/111:56:021
879899150,2cyclictest0-21swapper/111:22:051
879899150,2cyclictest0-21swapper/108:58:041
8797991512,2cyclictest31938-21kworker/u8:111:06:060
8797991512,2cyclictest31865-21kworker/u8:109:19:050
8797991512,2cyclictest19928-21kworker/u8:010:21:050
8797991512,2cyclictest10138-21kworker/u8:211:10:020
8797991512,2cyclictest0-21swapper/008:35:180
8797991511,2cyclictest6429-21tr10:30:180
8800991411,2cyclictest31758-21kworker/u8:210:51:053
8800991411,2cyclictest15932-21ssh10:06:213
8800991411,2cyclictest14678-21kworker/u8:207:48:023
8800991411,2cyclictest10881-21kworker/u8:208:51:043
8800991411,2cyclictest0-21swapper/311:35:213
880099140,13cyclictest0-21swapper/312:31:053
880099140,13cyclictest0-21swapper/311:24:053
880099140,13cyclictest0-21swapper/307:43:053
880099140,13cyclictest0-21swapper/307:16:053
880099140,12cyclictest25087-21diskmemload11:45:033
879999149,3cyclictest16566-21ssh10:07:242
879999140,2cyclictest10760-21ssh09:28:022
879999140,2cyclictest0-21swapper/210:28:252
879999140,12cyclictest0-21swapper/212:08:162
8798991411,2cyclictest14678-21kworker/u8:207:44:061
879899140,2cyclictest0-21swapper/108:23:051
879899140,12cyclictest25087-21diskmemload10:46:491
879899140,12cyclictest0-21swapper/110:50:091
879899140,12cyclictest0-21swapper/107:20:191
8797991411,2cyclictest6318-21kworker/u8:009:28:020
8797991411,2cyclictest31758-21kworker/u8:210:45:050
8797991411,2cyclictest17224-21kworker/u8:011:21:050
8797991411,2cyclictest14678-21kworker/u8:207:42:050
8797991411,2cyclictest14678-21kworker/u8:207:38:040
8797991411,2cyclictest13364-21kworker/u8:108:59:040
879799141,11cyclictest14450-21ssh11:45:460
879799140,2cyclictest0-21swapper/007:55:190
879799140,13cyclictest0-21swapper/009:00:090
879799140,12cyclictest27099-21ssh10:51:430
879799140,12cyclictest17626-21ssh10:41:540
880099131,2cyclictest27426-21ssh12:00:033
8800991310,2cyclictest31758-21kworker/u8:210:58:013
8800991310,2cyclictest0-21swapper/312:23:143
880099130,2cyclictest0-21swapper/311:06:033
880099130,12cyclictest0-21swapper/311:31:223
880099130,12cyclictest0-21swapper/311:15:423
880099130,12cyclictest0-21swapper/309:45:053
8799991310,2cyclictest29411-21kworker/u8:108:32:062
8799991310,2cyclictest25087-21diskmemload09:49:242
8799991310,2cyclictest14678-21kworker/u8:207:40:062
8799991310,2cyclictest0-21swapper/211:38:462
8799991310,2cyclictest0-21swapper/208:16:032
8799991310,2cyclictest0-21swapper/207:55:162
879999130,2cyclictest0-21swapper/208:38:042
879899131,3cyclictest15526-21cut12:20:181
879899131,2cyclictest0-21swapper/109:22:041
8798991310,2cyclictest0-21swapper/111:27:001
8798991310,2cyclictest0-21swapper/109:45:121
8798991310,2cyclictest0-21swapper/109:42:091
8798991310,2cyclictest0-21swapper/109:30:301
8798991310,2cyclictest0-21swapper/109:27:201
879899130,2cyclictest25087-21diskmemload09:35:181
879899130,2cyclictest0-21swapper/111:38:181
879899130,12cyclictest0-21swapper/111:00:181
8797991310,2cyclictest6818-21kworker/u8:008:25:040
8797991310,2cyclictest31550-21kworker/u8:112:05:040
8797991310,2cyclictest27441-21ssh12:00:040
8797991310,2cyclictest25642-21grep09:10:120
8797991310,2cyclictest25502-21kworker/u8:007:51:050
8797991310,2cyclictest10138-21kworker/u8:211:15:040
8797991310,2cyclictest0-21swapper/012:31:550
8797991310,2cyclictest0-21swapper/011:36:170
8797991310,2cyclictest0-21swapper/011:02:060
8797991310,2cyclictest0-21swapper/010:11:360
8797991310,2cyclictest0-21swapper/007:30:180
879799130,12cyclictest0-21swapper/011:25:160
879799130,12cyclictest0-21swapper/008:51:050
8392130,2sleep025087-21diskmemload12:39:590
880099129,2cyclictest29411-21kworker/u8:108:18:053
880099129,2cyclictest25502-21kworker/u8:007:59:043
880099129,2cyclictest0-21swapper/311:11:513
880099128,2cyclictest0-21swapper/307:35:173
880099122,7cyclictest0-21swapper/309:03:593
880099121,8cyclictest4556-21metacity07:11:593
879999120,2cyclictest25087-21diskmemload11:05:322
879999120,2cyclictest0-21swapper/208:05:132
879999120,1cyclictest0-21swapper/207:11:022
879999120,11cyclictest30538-21smartctl08:01:012
879899129,2cyclictest0-21swapper/110:25:191
879899129,2cyclictest0-21swapper/110:00:171
879899122,7cyclictest0-21swapper/108:41:021
879899121,3cyclictest0-21swapper/107:45:111
879899120,11cyclictest0-21swapper/112:10:591
879899120,11cyclictest0-21swapper/109:15:091
879899120,11cyclictest0-21swapper/107:25:131
879799129,2cyclictest12915-21kworker/u8:012:20:050
879799129,2cyclictest0-21swapper/008:10:150
879799129,2cyclictest0-21swapper/008:05:130
879799129,2cyclictest0-21swapper/008:01:000
879799120,2cyclictest0-21swapper/009:50:080
879799120,11cyclictest23888-21ssh11:55:300
879799120,11cyclictest0-21swapper/008:45:130
879799120,11cyclictest0-21swapper/008:45:120
879799120,10cyclictest0-21swapper/010:25:580
106982120,2sleep00-21swapper/011:41:500
879999118,2cyclictest29411-21kworker/u8:108:28:062
879899116,3cyclictest2963-21munin-node1
879899112,6cyclictest0-21swapper/107:40:001
879899111,8cyclictest23-21ksoftirqd/108:48:501
879899111,8cyclictest23-21ksoftirqd/108:48:491
879899110,3cyclictest0-21swapper/108:35:131
879799118,2cyclictest14678-21kworker/u8:207:45:040
879799118,2cyclictest0-21swapper/007:20:170
880099107,2cyclictest13364-21kworker/u8:108:42:053
880099102,6cyclictest0-21swapper/307:51:023
880099102,5cyclictest0-21swapper/308:37:593
879999100,9cyclictest0-21swapper/207:47:282
879799107,2cyclictest6818-21kworker/u8:008:40:020
879799107,2cyclictest4974-21kworker/u8:007:10:040
879799107,2cyclictest14678-21kworker/u8:207:26:050
88009996,2cyclictest29411-21kworker/u8:108:20:013
88009996,2cyclictest14678-21kworker/u8:208:11:053
88009990,2cyclictest0-21swapper/307:29:553
88009985,2cyclictest13684-21if_eth007:20:153
88009980,7cyclictest0-21swapper/308:05:023
87999983,3cyclictest0-21swapper/207:25:122
87979983,3cyclictest3946-21proc_pri08:15:190
87979983,3cyclictest11113-21head07:15:120
87979980,2cyclictest0-21swapper/009:09:570
87979980,2cyclictest0-21swapper/008:32:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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