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2026-07-25 - 21:12

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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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 Sat Jul 25, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18353211181,6sleep00-21swapper/007:05:150
17719211098,6sleep10-21swapper/107:05:001
19515210998,6sleep30-21swapper/307:07:193
19586210881,6sleep20-21swapper/207:08:142
389821030,1sleep33897-21ssh10:49:453
51722850,1sleep229-21rcuc/211:56:232
89152690,0sleep30-21swapper/308:00:183
119942670,0sleep20-21swapper/210:57:072
108402660,0sleep10-21swapper/112:02:351
307242300,0sleep130725-21munin-node1
282612270,1sleep30-21swapper/308:50:143
3302240,0sleep30-21swapper/310:12:033
147702240,0sleep00-21swapper/012:06:100
271472230,1sleep10-21swapper/109:33:321
19755992219,2cyclictest24381-21kworker/u8:010:31:042
19753992219,2cyclictest24381-21kworker/u8:010:04:050
142542220,0sleep10-21swapper/111:33:011
19753992118,2cyclictest7318-21kworker/u8:110:58:050
19756992014,4cyclictest0-21swapper/309:40:123
1975599200,18cyclictest0-21swapper/211:25:092
1975499200,2cyclictest6156-21rm11:25:091
19753992017,2cyclictest7238-21kworker/u8:212:04:060
19753992017,2cyclictest6766-21kworker/u8:109:13:050
19753992017,2cyclictest25212-21kworker/u8:110:45:050
19753992017,2cyclictest25212-21kworker/u8:110:39:050
19753992017,2cyclictest24381-21kworker/u8:010:32:050
19753992017,2cyclictest24381-21kworker/u8:010:18:010
189802200,0sleep00-21swapper/009:25:140
1975699191,16cyclictest0-21swapper/310:25:123
19755991916,2cyclictest7318-21kworker/u8:111:00:052
19753991916,2cyclictest6766-21kworker/u8:109:22:050
19753991916,2cyclictest3484-21kworker/u8:209:51:050
19753991916,2cyclictest11700-21kworker/u8:209:19:040
1975399190,17cyclictest3697-21diskmemload11:25:100
19755991815,2cyclictest9166-21kworker/u8:112:28:012
19755991815,2cyclictest27171-21kworker/u8:011:18:042
19753991815,2cyclictest3995-21kworker/u8:108:29:040
19753991815,2cyclictest3954-21kworker/u8:211:24:060
19753991815,2cyclictest29674-21kworker/u8:207:52:010
19753991815,2cyclictest29674-21kworker/u8:207:41:050
19753991815,2cyclictest27483-21kworker/u8:212:32:040
19753991815,2cyclictest19487-21kworker/u8:310:12:050
19753991815,2cyclictest12838-21kworker/u8:012:18:040
19753991815,2cyclictest12551-21kworker/u8:210:27:050
1975399180,17cyclictest0-21swapper/012:28:020
1975399180,16cyclictest0-21swapper/011:18:040
235462170,0sleep30-21swapper/312:15:233
1975699171,2cyclictest0-21swapper/311:25:093
19755991714,2cyclictest3995-21kworker/u8:108:06:052
19755991714,2cyclictest3395-21kworker/u8:009:16:012
19755991714,2cyclictest29133-21kworker/u8:207:18:052
19755991714,2cyclictest29133-21kworker/u8:207:18:042
19755991714,2cyclictest23625-21kworker/u8:109:40:042
19755991714,2cyclictest11700-21kworker/u8:209:34:052
19753991714,2cyclictest9166-21kworker/u8:111:31:040
19753991714,2cyclictest3995-21kworker/u8:108:07:050
19753991714,2cyclictest3954-21kworker/u8:211:35:050
19753991714,2cyclictest29133-21kworker/u8:207:17:050
19753991714,2cyclictest29133-21kworker/u8:207:17:040
19753991714,2cyclictest26177-21kworker/u8:107:29:040
19753991714,2cyclictest25584-21kworker/u8:211:52:040
19753991714,2cyclictest25584-21kworker/u8:211:49:050
19753991714,2cyclictest24381-21kworker/u8:010:05:040
19753991714,2cyclictest19460-21kworker/u8:107:10:020
19753991714,2cyclictest14241-21kworker/u8:011:05:040
1975399170,16cyclictest0-21swapper/009:40:040
1975699161,13cyclictest0-21swapper/312:25:193
1975699161,12cyclictest0-21swapper/310:33:463
1975699160,14cyclictest0-21swapper/312:10:183
1975699160,14cyclictest0-21swapper/309:20:133
1975699160,14cyclictest0-21swapper/308:45:133
19755991613,2cyclictest9166-21kworker/u8:111:48:052
19755991613,2cyclictest7318-21kworker/u8:111:22:052
19755991613,2cyclictest4015-21kworker/u8:012:30:052
19755991613,2cyclictest3395-21kworker/u8:009:10:052
19755991613,2cyclictest27483-21kworker/u8:212:24:062
19755991613,2cyclictest11700-21kworker/u8:209:27:042
19753991613,2cyclictest9660-21kworker/u8:112:37:050
19753991613,2cyclictest3995-21kworker/u8:108:12:050
19753991613,2cyclictest30366-21kworker/u8:108:59:050
19753991613,2cyclictest29674-21kworker/u8:207:55:050
19753991613,2cyclictest27483-21kworker/u8:212:22:020
19753991613,2cyclictest25212-21kworker/u8:110:43:040
19753991613,2cyclictest25212-21kworker/u8:110:43:040
19753991613,2cyclictest23577-21kworker/u8:007:47:050
19753991613,2cyclictest20139-21kworker/u8:208:37:050
19753991613,2cyclictest1541-21kworker/u8:011:58:040
1975699159,4cyclictest0-21swapper/309:53:143
1975699151,12cyclictest3649-21snmpd09:48:033
19756991510,3cyclictest20463-21munin-node3
19756991510,3cyclictest0-21swapper/307:45:193
1975699150,4cyclictest6908-21ssh10:51:453
1975699150,4cyclictest0-21swapper/309:35:363
1975699150,13cyclictest21830-21ssh11:07:183
19755991512,2cyclictest652-21kworker/u8:010:51:042
19755991512,2cyclictest3995-21kworker/u8:108:33:052
19755991512,2cyclictest3395-21kworker/u8:009:09:052
19755991512,2cyclictest29133-21kworker/u8:207:24:042
19755991512,2cyclictest24203-21kworker/u8:008:48:052
19755991512,2cyclictest15947-21kworker/u8:011:40:042
1975599150,13cyclictest0-21swapper/212:05:312
1975599150,13cyclictest0-21swapper/210:22:142
1975599150,13cyclictest0-21swapper/208:15:152
19754991511,2cyclictest21-21rcuc/109:45:441
1975499150,13cyclictest29674-21kworker/u8:207:45:051
1975399151,3cyclictest0-21swapper/008:45:180
19753991512,2cyclictest9166-21kworker/u8:111:42:040
19753991512,2cyclictest3484-21kworker/u8:209:45:050
19753991512,2cyclictest21636-21kworker/u8:211:10:050
1975399150,2cyclictest0-21swapper/009:34:040
1975399150,13cyclictest0-21swapper/008:50:150
1975699149,3cyclictest0-21swapper/311:58:433
1975699141,11cyclictest9403-21ssh12:00:583
1975699141,11cyclictest0-21swapper/309:58:033
1975699140,13cyclictest0-21swapper/309:28:503
1975699140,12cyclictest3697-21diskmemload09:30:593
1975699140,12cyclictest16955-21ssh11:02:163
1975699140,12cyclictest14817-21seq12:06:153
1975699140,12cyclictest0-21swapper/312:24:273
1975699140,12cyclictest0-21swapper/311:50:243
1975699140,12cyclictest0-21swapper/311:49:583
1975699140,12cyclictest0-21swapper/311:40:213
1975699140,12cyclictest0-21swapper/309:15:073
19755991411,2cyclictest8555-21kworker/u8:109:50:042
19755991411,2cyclictest3995-21kworker/u8:108:14:012
19755991411,2cyclictest3995-21kworker/u8:108:02:042
19755991411,2cyclictest357-21fschecks_time09:00:152
19755991411,2cyclictest29674-21kworker/u8:207:53:052
19755991411,2cyclictest29674-21kworker/u8:207:38:042
19755991411,2cyclictest29133-21kworker/u8:207:25:052
19755991411,2cyclictest27171-21kworker/u8:011:14:042
19755991411,2cyclictest23625-21kworker/u8:109:37:052
19755991411,2cyclictest1607-21kworker/u8:110:15:042
19755991411,2cyclictest1607-21kworker/u8:110:14:062
19755991411,2cyclictest12838-21kworker/u8:012:10:022
1975599140,12cyclictest22426-21ssh11:08:142
1975599140,12cyclictest0-21swapper/210:35:022
1975599140,12cyclictest0-21swapper/210:26:022
1975499142,2cyclictest23-21ksoftirqd/112:30:001
1975499141,11cyclictest23-21ksoftirqd/110:11:311
19754991410,2cyclictest3728-21runrttasks11:22:311
19754991410,2cyclictest14277-21seq11:00:121
19754991410,2cyclictest0-21swapper/108:55:191
1975499140,3cyclictest0-21swapper/110:30:171
19753991411,2cyclictest29674-21kworker/u8:207:36:040
19753991411,2cyclictest20139-21kworker/u8:208:40:050
19756991310,2cyclictest0-21swapper/311:33:283
1975699130,3cyclictest3697-21diskmemload11:11:093
1975699130,2cyclictest6206-21ssh09:11:123
1975699130,12cyclictest5072-21ssh10:16:343
1975699130,12cyclictest0-21swapper/312:33:003
1975699130,12cyclictest0-21swapper/311:17:303
1975699130,12cyclictest0-21swapper/310:24:273
1975699130,12cyclictest0-21swapper/307:35:173
1975699130,11cyclictest0-21swapper/311:21:083
1975699130,11cyclictest0-21swapper/310:41:203
1975699130,11cyclictest0-21swapper/310:41:193
1975699130,11cyclictest0-21swapper/310:35:493
19755991310,2cyclictest29893-21kworker/u8:009:47:052
19755991310,2cyclictest26177-21kworker/u8:107:32:052
19755991310,2cyclictest24381-21kworker/u8:010:07:042
19755991310,2cyclictest0-21swapper/212:00:122
19755991310,2cyclictest0-21swapper/210:46:462
19755991310,2cyclictest0-21swapper/208:35:062
19755991310,2cyclictest0-21swapper/207:45:152
1975599130,12cyclictest3697-21diskmemload11:53:292
1975599130,12cyclictest0-21swapper/212:39:302
1975599130,12cyclictest0-21swapper/211:35:142
1975599130,12cyclictest0-21swapper/211:30:042
1975599130,12cyclictest0-21swapper/209:57:302
1975599130,12cyclictest0-21swapper/209:24:002
1975599130,12cyclictest0-21swapper/208:40:202
1975599130,11cyclictest24985-21chrt12:16:582
19754991310,2cyclictest3697-21diskmemload11:13:371
19754991310,2cyclictest0-21swapper/112:26:501
19754991310,2cyclictest0-21swapper/112:06:431
19754991310,2cyclictest0-21swapper/111:18:171
19754991310,2cyclictest0-21swapper/111:08:301
19754991310,2cyclictest0-21swapper/109:43:331
1975499130,2cyclictest7099-21sh11:59:211
1975499130,2cyclictest23-21ksoftirqd/111:46:311
1975499130,2cyclictest0-21swapper/110:41:221
1975499130,2cyclictest0-21swapper/110:41:211
1975499130,12cyclictest0-21swapper/112:21:181
1975499130,12cyclictest0-21swapper/112:10:481
1975499130,12cyclictest0-21swapper/111:40:131
1975499130,12cyclictest0-21swapper/110:27:061
1975499130,12cyclictest0-21swapper/109:50:131
1975499130,11cyclictest8555-21kworker/u8:109:55:051
1975499130,11cyclictest3697-21diskmemload10:16:441
1975499130,11cyclictest0-21swapper/110:04:481
1975499130,11cyclictest0-21swapper/107:50:181
19753991310,2cyclictest3995-21kworker/u8:108:32:060
19753991310,2cyclictest24381-21kworker/u8:010:22:040
19753991310,2cyclictest0-21swapper/012:10:180
19753991310,2cyclictest0-21swapper/011:03:480
1975399130,12cyclictest6508-21ssh10:51:080
1975399130,12cyclictest3697-21diskmemload09:55:030
1975399130,12cyclictest0-21swapper/009:35:190
1975699129,2cyclictest0-21swapper/312:35:223
1975699129,2cyclictest0-21swapper/311:35:413
1975699127,3cyclictest24209-21munin-node3
1975699122,8cyclictest29178-21sendmail_mailtr07:31:023
1975699122,6cyclictest0-21swapper/307:30:013
1975699120,2cyclictest0-21swapper/308:55:073
1975699120,2cyclictest0-21swapper/307:10:403
1975699120,11cyclictest0-21swapper/310:57:053
1975699120,11cyclictest0-21swapper/310:06:313
1975699120,11cyclictest0-21swapper/308:35:203
1975699120,11cyclictest0-21swapper/308:20:143
1975699120,11cyclictest0-21swapper/307:20:153
1975599129,2cyclictest29674-21kworker/u8:207:42:052
1975599129,2cyclictest29133-21kworker/u8:207:11:052
1975599129,2cyclictest0-21swapper/210:41:042
1975599129,2cyclictest0-21swapper/210:41:032
1975599120,2cyclictest0-21swapper/207:55:162
1975599120,11cyclictest3697-21diskmemload10:01:122
1975499129,2cyclictest0-21swapper/112:35:161
1975499129,2cyclictest0-21swapper/110:50:071
1975499123,5cyclictest0-21swapper/108:17:431
1975499122,7cyclictest4556-21metacity07:32:591
1975499122,7cyclictest0-21swapper/107:56:021
1975499121,9cyclictest21-21rcuc/111:35:141
1975499121,7cyclictest4556-21metacity09:27:581
1975499120,2cyclictest0-21swapper/112:15:271
1975499120,2cyclictest0-21swapper/110:37:031
1975499120,2cyclictest0-21swapper/110:23:281
1975499120,11cyclictest0-21swapper/111:50:441
1975499120,11cyclictest0-21swapper/110:55:191
1975499120,11cyclictest0-21swapper/110:45:311
1975499120,11cyclictest0-21swapper/110:06:321
1975499120,10cyclictest29893-21kworker/u8:009:36:021
1975399120,2cyclictest0-21swapper/008:20:170
1975399120,2cyclictest0-21swapper/008:15:150
1975399120,11cyclictest0-21swapper/008:00:160
4802110,8sleep00-21swapper/009:00:180
1975699118,2cyclictest0-21swapper/308:33:383
1975699118,2cyclictest0-21swapper/307:57:293
1975699111,8cyclictest32360-21head09:00:133
1975699111,7cyclictest4562-21gdm-simple-gree07:43:593
1975699111,6cyclictest0-21swapper/308:26:013
1975599118,2cyclictest0-21swapper/208:50:192
1975599118,2cyclictest0-21swapper/208:20:522
1975599110,1cyclictest30069-21copy08:55:042
1975499118,2cyclictest21-21rcuc/108:00:401
1975499118,2cyclictest0-21swapper/108:25:401
1975499117,3cyclictest3831-21cut09:09:591
1975499117,2cyclictest0-21swapper/108:20:191
1975499111,3cyclictest27111-21ntp_states08:45:181
1975499111,3cyclictest22181-21munin-node1
1975499111,2cyclictest32112-21munin-node1
1975499110,9cyclictest0-21swapper/107:25:121
1975499110,2cyclictest0-21swapper/108:51:041
1975499110,2cyclictest0-21swapper/108:41:061
1975499110,10cyclictest29133-21kworker/u8:207:21:051
1975499110,10cyclictest29133-21kworker/u8:207:14:051
1975399118,2cyclictest0-21swapper/009:05:140
1975699105,3cyclictest13475-21sed08:11:053
1975699105,3cyclictest10531-21grep08:05:183
1975699103,3cyclictest3777-21sed09:10:003
1975499107,2cyclictest9578-21fschecks_time09:15:141
1975499103,6cyclictest0-21swapper/108:32:471
1975499101,7cyclictest0-21swapper/108:06:061
1975499101,6cyclictest4562-21gdm-simple-gree09:22:591
1975499101,3cyclictest12052-21munin-node1
1975499100,7cyclictest0-21swapper/109:12:021
1975499100,2cyclictest0-21swapper/109:00:131
1975499100,2cyclictest0-21swapper/107:15:151
1975499100,2cyclictest0-21swapper/107:15:141
1975399107,2cyclictest0-21swapper/007:21:030
197569994,3cyclictest3961-21telnet07:50:133
197569994,3cyclictest22555-21which07:15:143
197569994,3cyclictest22555-21which07:15:133
197569994,3cyclictest14502-21tune2fs08:15:153
197539990,3cyclictest29835-21cron07:35:010
197559985,2cyclictest0-21swapper/208:25:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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