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2026-08-08 - 22:36

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 Aug 08, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1955921380,1sleep20-21swapper/212:15:422
11679211393,15sleep00-21swapper/007:06:140
11866210897,6sleep10-21swapper/107:08:401
11253210897,6sleep30-21swapper/307:05:493
11723210683,18sleep20-21swapper/207:06:492
236702790,1sleep00-21swapper/008:56:030
76042730,0sleep30-21swapper/309:53:543
305552690,0sleep20-21swapper/211:21:232
7062340,1sleep31199999cyclictest11:25:003
281312280,1sleep20-21swapper/210:46:192
303102250,1sleep2301ktimersoftd/212:26:192
11998992420,2cyclictest16802-21kworker/u8:211:52:042
84582230,0sleep00-21swapper/012:05:140
62682210,1sleep3381ktimersoftd/312:02:243
11999992118,2cyclictest27655-21kworker/u8:110:17:043
11998992017,2cyclictest29969-21kworker/u8:111:02:042
150132190,0sleep00-21swapper/012:11:030
11998991916,2cyclictest29969-21kworker/u8:110:50:042
11998991916,2cyclictest18523-21kworker/u8:110:42:042
11998991916,2cyclictest18523-21kworker/u8:110:37:042
1199899190,2cyclictest0-21swapper/209:28:042
1199699190,2cyclictest0-21swapper/011:04:040
1199899180,16cyclictest0-21swapper/211:25:042
11997991815,2cyclictest22165-21kworker/u8:311:24:041
265512170,0sleep30-21swapper/310:45:153
11999991714,2cyclictest5474-21kworker/u8:310:32:043
11998991714,2cyclictest772-21kworker/u8:212:38:052
11998991714,2cyclictest3438-21kworker/u8:011:06:042
11998991714,2cyclictest27655-21kworker/u8:110:20:042
11996991714,2cyclictest29969-21kworker/u8:110:53:040
11996991714,2cyclictest26624-21kworker/u8:009:28:040
11996991714,2cyclictest14843-21kworker/u8:112:26:040
1199999160,14cyclictest0-21swapper/311:50:003
11998991613,2cyclictest8221-21kworker/u8:310:05:042
11998991613,2cyclictest16952-21kworker/u8:210:26:042
11998991613,2cyclictest15311-21kworker/u8:110:00:052
1199899161,13cyclictest15862-21munin-node2
1199899160,14cyclictest0-21swapper/212:06:042
11997991613,2cyclictest24257-21kworker/u8:210:47:041
1199799160,2cyclictest0-21swapper/110:32:041
11998991512,2cyclictest32340-21kworker/u8:009:51:042
11998991512,2cyclictest22165-21kworker/u8:311:32:052
11998991512,2cyclictest20427-21kworker/u8:207:41:042
11998991512,2cyclictest16952-21kworker/u8:210:16:042
1199899150,2cyclictest0-21swapper/211:57:442
1199899150,14cyclictest0-21swapper/211:10:142
1199899150,13cyclictest9984-21ssh09:55:382
1199899150,13cyclictest14135-21ls12:10:182
1199899150,13cyclictest0-21swapper/212:23:142
1199799151,3cyclictest0-21swapper/110:03:221
11997991512,2cyclictest16802-21kworker/u8:211:47:041
11997991512,2cyclictest0-21swapper/109:06:041
11997991511,3cyclictest7666-21kworker/u8:011:33:041
11997991511,3cyclictest19809-21munin-node1
11997991510,3cyclictest21733-21perl09:35:141
1199799150,14cyclictest0-21swapper/110:40:151
1199799150,13cyclictest0-21swapper/112:00:551
11999991411,2cyclictest32343-21ssh09:13:403
11999991410,2cyclictest0-21swapper/311:30:203
1199999140,2cyclictest0-21swapper/312:26:043
1199999140,12cyclictest20452-21apt-get08:50:113
1199999140,12cyclictest0-21swapper/308:55:203
11998991411,2cyclictest9871-21kworker/u8:107:22:042
11998991411,2cyclictest7666-21kworker/u8:011:37:042
11998991411,2cyclictest22165-21kworker/u8:311:19:042
11998991411,2cyclictest0-21swapper/212:02:142
11998991411,2cyclictest0-21swapper/209:25:012
1199899140,3cyclictest0-21swapper/212:33:482
1199899140,2cyclictest0-21swapper/209:13:542
1199899140,2cyclictest0-21swapper/207:30:152
1199899140,12cyclictest22095-21ssh11:45:372
1199899140,12cyclictest0-21swapper/209:47:142
1199899140,12cyclictest0-21swapper/209:15:042
1199799142,10cyclictest0-21swapper/109:24:261
11997991411,2cyclictest0-21swapper/112:22:101
11997991411,2cyclictest0-21swapper/110:55:191
11997991411,2cyclictest0-21swapper/110:20:501
11997991411,2cyclictest0-21swapper/110:13:441
1199799140,3cyclictest0-21swapper/112:09:491
1199799140,2cyclictest0-21swapper/112:17:151
1199799140,2cyclictest0-21swapper/109:16:041
1199799140,2cyclictest0-21swapper/107:50:491
1199799140,13cyclictest0-21swapper/112:13:581
1199799140,13cyclictest0-21swapper/111:59:551
1199799140,13cyclictest0-21swapper/111:05:151
1199799140,12cyclictest0-21swapper/110:35:521
1199799140,12cyclictest0-21swapper/109:55:171
1199799140,12cyclictest0-21swapper/107:10:511
1199699140,12cyclictest26674-21cpuspeed_turbos07:45:120
1199699140,12cyclictest14446-21ssh10:33:070
1199699140,12cyclictest0-21swapper/009:00:130
302992130,3sleep030061-21sendmail-mta07:54:180
244882130,2sleep30-21swapper/307:40:153
1199999139,2cyclictest0-21swapper/309:33:103
11999991310,2cyclictest0-21swapper/311:25:183
11999991310,2cyclictest0-21swapper/310:20:163
11999991310,2cyclictest0-21swapper/309:55:123
1199999130,3cyclictest2729-21ssh12:31:143
1199999130,2cyclictest0-21swapper/310:25:153
1199999130,2cyclictest0-21swapper/308:35:123
1199999130,2cyclictest0-21swapper/308:35:123
1199999130,12cyclictest0-21swapper/309:35:173
1199999130,12cyclictest0-21swapper/308:00:153
1199999130,11cyclictest0-21swapper/311:06:053
11998991310,2cyclictest5474-21kworker/u8:310:30:012
11998991310,2cyclictest22137-21apt-get07:35:002
11998991310,2cyclictest10035-21kworker/u8:108:24:042
11998991310,2cyclictest0-21swapper/210:10:442
11998991310,2cyclictest0-21swapper/208:40:122
11998991310,2cyclictest0-21swapper/207:10:142
1199899130,2cyclictest0-21swapper/209:40:152
1199899130,2cyclictest0-21swapper/209:35:242
1199899130,2cyclictest0-21swapper/209:30:442
1199899130,2cyclictest0-21swapper/208:31:032
1199899130,2cyclictest0-21swapper/208:05:302
1199899130,2cyclictest0-21swapper/207:16:022
1199799131,3cyclictest16175-21apt-get09:30:121
11997991310,2cyclictest28283-21diskmemload11:25:221
11997991310,2cyclictest0-21swapper/112:30:551
11997991310,2cyclictest0-21swapper/111:51:441
11997991310,2cyclictest0-21swapper/111:02:541
11997991310,2cyclictest0-21swapper/109:50:401
11997991310,2cyclictest0-21swapper/109:40:331
11997991310,2cyclictest0-21swapper/108:35:121
11997991310,2cyclictest0-21swapper/108:35:121
1199799130,2cyclictest0-21swapper/112:35:581
1199799130,2cyclictest0-21swapper/111:10:301
1199799130,2cyclictest0-21swapper/110:16:201
1199799130,2cyclictest0-21swapper/109:46:131
1199799130,2cyclictest0-21swapper/109:25:351
1199799130,2cyclictest0-21swapper/109:12:031
1199799130,2cyclictest0-21swapper/108:20:401
1199799130,2cyclictest0-21swapper/107:30:201
1199799130,12cyclictest0-21swapper/111:41:391
1199799130,12cyclictest0-21swapper/111:36:471
1199799130,12cyclictest0-21swapper/111:16:451
1199799130,12cyclictest0-21swapper/110:51:251
1199799130,12cyclictest0-21swapper/110:26:451
1199799130,12cyclictest0-21swapper/108:55:131
1199799130,12cyclictest0-21swapper/108:10:311
1199799130,12cyclictest0-21swapper/108:06:031
1199799130,11cyclictest0-21swapper/112:25:081
1199799130,11cyclictest0-21swapper/107:20:201
1199699135,2cyclictest274-21jbd2/sda1-812:35:000
11996991310,2cyclictest22165-21kworker/u8:311:25:040
11996991310,2cyclictest0-21swapper/011:42:470
11996991310,2cyclictest0-21swapper/010:40:170
11996991310,2cyclictest0-21swapper/009:20:190
11996991310,2cyclictest0-21swapper/009:13:590
11996991310,2cyclictest0-21swapper/008:25:120
1199699130,3cyclictest0-21swapper/011:24:540
1199699130,2cyclictest0-21swapper/007:35:180
1199699130,11cyclictest26014-21kworker/u8:007:56:040
84942120,1sleep00-21swapper/010:26:380
69902120,2sleep00-21swapper/010:58:130
65952120,1sleep00-21swapper/009:52:230
300702120,2sleep30-21swapper/307:53:093
207132120,1sleep00-21swapper/011:45:030
1199999129,2cyclictest0-21swapper/310:38:003
1199999129,2cyclictest0-21swapper/309:24:103
1199999129,2cyclictest0-21swapper/307:55:183
1199999129,2cyclictest0-21swapper/307:46:023
1199999120,2cyclictest0-21swapper/311:36:043
1199999120,2cyclictest0-21swapper/310:53:403
1199999120,11cyclictest0-21swapper/312:06:033
1199999120,11cyclictest0-21swapper/309:15:173
1199999120,10cyclictest17186-21ssh10:03:223
1199999120,10cyclictest0-21swapper/312:23:503
1199999120,10cyclictest0-21swapper/307:30:073
1199899129,2cyclictest18147-21kworker/u8:108:52:012
1199899129,2cyclictest0-21swapper/208:46:062
1199899128,3cyclictest29969-21kworker/u8:110:57:342
1199899120,1cyclictest0-21swapper/208:00:172
1199899120,11cyclictest0-21swapper/209:05:162
1199899120,11cyclictest0-21swapper/207:50:182
1199799129,2cyclictest0-21swapper/108:00:141
1199799121,9cyclictest0-21swapper/108:45:131
1199799121,9cyclictest0-21swapper/107:56:011
1199799121,3cyclictest14222-21munin-node1
1199799121,3cyclictest0-21swapper/108:25:131
1199799121,3cyclictest0-21swapper/107:40:161
1199799120,3cyclictest8142-21latency_hist08:20:001
1199799120,2cyclictest0-21swapper/107:35:511
1199799120,1cyclictest0-21swapper/107:25:121
1199799120,11cyclictest0-21swapper/108:40:141
1199699129,2cyclictest2606-21ssh10:21:010
1199699129,2cyclictest13670-21aten2.4_r3power11:05:140
1199699129,2cyclictest0-21swapper/011:35:170
1199699129,2cyclictest0-21swapper/010:10:110
1199699129,2cyclictest0-21swapper/009:15:380
1199699129,2cyclictest0-21swapper/008:40:180
1199699120,2cyclictest0-21swapper/008:00:190
1199699120,11cyclictest0-21swapper/012:00:000
1199699120,11cyclictest0-21swapper/010:45:190
1199699120,11cyclictest0-21swapper/010:38:270
1199699120,11cyclictest0-21swapper/009:55:170
1199699120,11cyclictest0-21swapper/009:05:170
1199699120,11cyclictest0-21swapper/008:30:190
1199699120,11cyclictest0-21swapper/007:31:020
1199699120,11cyclictest0-21swapper/007:26:020
1199699120,10cyclictest0-21swapper/011:30:440
1199699120,10cyclictest0-21swapper/009:40:380
1199999118,2cyclictest0-21swapper/312:00:003
1199999118,2cyclictest0-21swapper/311:50:103
1199999118,2cyclictest0-21swapper/310:43:103
1199999118,2cyclictest0-21swapper/310:05:513
1199999118,2cyclictest0-21swapper/308:06:023
1199999116,3cyclictest24417-21processes11:15:203
1199999116,3cyclictest13533-21ssh09:26:333
1199999110,9cyclictest0-21swapper/310:10:033
1199999110,2cyclictest0-21swapper/309:46:503
1199999110,10cyclictest0-21swapper/312:36:083
1199999110,10cyclictest0-21swapper/311:03:043
1199999110,10cyclictest0-21swapper/310:55:103
1199999110,10cyclictest0-21swapper/308:30:193
1199899118,2cyclictest0-21swapper/208:10:412
1199899117,3cyclictest26014-21kworker/u8:008:36:052
1199899117,3cyclictest26014-21kworker/u8:008:36:052
1199899110,10cyclictest0-21swapper/207:45:102
1199799110,3cyclictest12400-21munin-node1
1199699118,2cyclictest9581-21kworker/u8:209:33:040
1199699118,2cyclictest0-21swapper/012:00:190
1199699118,2cyclictest0-21swapper/011:52:040
1199699118,2cyclictest0-21swapper/011:11:090
1199699118,2cyclictest0-21swapper/010:06:580
1199699118,2cyclictest0-21swapper/009:38:580
1199699110,9cyclictest0-21swapper/011:17:050
1199699110,2cyclictest0-21swapper/010:03:590
1199699110,10cyclictest9871-21kworker/u8:107:24:040
1199699110,10cyclictest0-21swapper/012:18:350
1199699110,10cyclictest0-21swapper/008:21:030
1199699110,10cyclictest0-21swapper/008:11:050
120182100,2sleep30-21swapper/308:27:593
1199999107,2cyclictest9581-21kworker/u8:209:40:053
1199999107,2cyclictest16802-21kworker/u8:212:15:043
1199999107,2cyclictest14843-21kworker/u8:112:11:013
1199999107,2cyclictest0-21swapper/311:10:093
1199999107,2cyclictest0-21swapper/307:15:163
1199999106,3cyclictest17148-21ssh11:40:363
1199999100,9cyclictest0-21swapper/309:03:373
1199899107,2cyclictest18147-21kworker/u8:108:55:042
1199899107,2cyclictest17263-21kworker/u8:007:28:042
1199899104,4cyclictest26241-21chrt09:04:392
1199699107,2cyclictest0-21swapper/009:49:380
1199699107,2cyclictest0-21swapper/008:35:140
1199699107,2cyclictest0-21swapper/008:35:140
1199699100,9cyclictest0-21swapper/012:37:500
1199699100,2cyclictest0-21swapper/010:17:110
1199699100,2cyclictest0-21swapper/008:53:170
119999996,2cyclictest0-21swapper/309:06:053
119999994,3cyclictest8374-21munin-node3
119999994,3cyclictest6415-21sh08:15:143
119999994,3cyclictest3150-21nscd08:40:113
119999994,3cyclictest12372-21telnet07:10:133
119999991,6cyclictest18491-21cpuspeed_turbos07:25:133
119999990,8cyclictest0-21swapper/308:13:463
119989996,2cyclictest30436-21kworker/u8:207:55:042
119989994,3cyclictest7084-21latency08:15:182
119979997,1cyclictest0-21swapper/107:45:111
119979994,3cyclictest24643-21telnet09:00:141
119979990,2cyclictest0-21swapper/108:50:291
119969996,2cyclictest28283-21diskmemload12:22:440
119969994,3cyclictest3153-21nscd08:45:130
119969994,3cyclictest15097-21ntpdc07:15:180
119969990,8cyclictest9871-21kworker/u8:107:40:040
119969990,8cyclictest26014-21kworker/u8:008:08:040
119969990,8cyclictest0-21swapper/007:13:280
119999985,2cyclictest0-21swapper/308:45:133
119999984,2cyclictest22462-21hostname07:35:133
119999980,2cyclictest0-21swapper/307:23:113
119989983,3cyclictest10787-21entropy08:25:142
119969973,3cyclictest6378-21aten2.4-expect08:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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