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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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  TQ-Systems
Click here to display the system's profile data or here to proceed to next system.
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 all highest latencies:
System rack3slot3s.osadl.org (updated Fri Jan 23, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
925977212467,53sleep30-21swapper/319:10:003
104562821150,2sleep20-21swapper/221:00:152
92578728856,10sleep10-21swapper/119:07:331
92587128368,9sleep20-21swapper/219:08:382
92579127854,6sleep00-21swapper/019:07:360
926258993026,2cyclictest0-21swapper/323:30:003
92625899302,12cyclictest1383294-21taskset00:15:383
12806662261,10sleep11055493-21diskmemload23:18:281
926258992522,1cyclictest0-21swapper/323:10:143
926258992319,2cyclictest0-21swapper/322:05:283
92625899231,19cyclictest0-21swapper/323:17:253
926258992219,1cyclictest0-21swapper/323:00:013
926258992218,2cyclictest1168943-21turbostat22:15:003
926258992211,8cyclictest944099-21chrt19:22:443
92625899221,17cyclictest1420966-21taskset00:39:433
92625899221,17cyclictest1377625-21taskset00:14:333
92625899214,13cyclictest0-21swapper/300:24:593
92625899212,12cyclictest1125553-21taskset21:50:033
926258992119,1cyclictest0-21swapper/300:00:123
926258992118,1cyclictest0-21swapper/322:42:543
92625899208,8cyclictest966283-21taskset19:45:123
926258992018,1cyclictest0-21swapper/323:32:403
926258992017,1cyclictest0-21swapper/322:15:263
926258992016,2cyclictest0-21swapper/322:27:013
926258992013,3cyclictest0-21swapper/322:45:553
92625899201,15cyclictest1098767-21taskset21:34:353
13860972200,8sleep01055493-21diskmemload00:19:160
92625899195,2cyclictest0-21swapper/323:55:353
92625899192,12cyclictest1342183-21taskset23:53:443
926258991917,1cyclictest0-21swapper/319:14:593
926258991916,2cyclictest0-21swapper/300:10:013
926258991916,1cyclictest0-21swapper/322:50:253
926258991916,1cyclictest0-21swapper/321:44:103
926258991916,1cyclictest0-21swapper/319:15:433
926258991915,2cyclictest0-21swapper/321:35:223
926258991915,2cyclictest0-21swapper/320:50:173
92625899191,14cyclictest1256047-21chrt23:05:033
92625899191,14cyclictest0-21swapper/323:35:353
92625899191,14cyclictest0-21swapper/323:35:353
92625899191,14cyclictest0-21swapper/322:36:523
92625899191,14cyclictest0-21swapper/321:55:093
92625899191,14cyclictest0-21swapper/300:30:473
92625899191,14cyclictest0-21swapper/300:27:233
12912182191,13sleep11291251-21forks23:25:131
12091792191,11sleep01055493-21diskmemload22:36:030
926258991814,2cyclictest0-21swapper/321:00:143
926258991811,4cyclictest0-21swapper/322:22:033
92625899181,14cyclictest0-21swapper/321:27:123
92625899181,14cyclictest0-21swapper/321:22:573
92625899181,14cyclictest0-21swapper/321:11:443
92625899181,13cyclictest0-21swapper/322:30:203
92625899181,11cyclictest1002640-21taskset20:20:003
13169702181,4sleep01316985-21cron23:40:000
13169702181,4sleep01316985-21cron23:40:000
11498892181,9sleep01055493-21diskmemload22:03:110
92625899172,10cyclictest950060-21taskset19:30:023
92625899171,4cyclictest0-21swapper/321:18:423
926258991714,1cyclictest0-21swapper/323:00:153
926258991714,1cyclictest0-21swapper/319:45:013
92625899171,3cyclictest1122218-21taskset21:45:493
926258991713,2cyclictest0-21swapper/320:30:113
92625899171,14cyclictest0-21swapper/322:03:103
92625899171,13cyclictest0-21swapper/323:41:383
92625899171,12cyclictest1013330-21turbostat20:30:003
92625899170,11cyclictest1287975-21taskset23:21:383
13915902171,5sleep01391834-21ssh00:20:290
12997502171,9sleep187-21kswapd023:30:031
11859802171,8sleep01185994-21ssh22:24:470
9754182162,10sleep0975488-21/usr/sbin/munin19:50:230
9609932160,3sleep0960998-21gltestperf19:40:120
9602942161,11sleep2960296-21cron19:39:592
92625899161,3cyclictest0-21swapper/320:55:113
92625899161,13cyclictest0-21swapper/323:45:043
92625899161,12cyclictest0-21swapper/320:20:133
92625899161,10cyclictest981721-21taskset20:00:123
92625899160,13cyclictest0-21swapper/321:05:203
92625899160,13cyclictest0-21swapper/320:40:123
92625899160,10cyclictest971086-21taskset19:50:063
14085292162,9sleep01408659-21mailstats00:30:270
13834872160,13sleep272-21kcompactd000:15:542
13680322161,7sleep244-21ksoftirqd/200:08:282
13266292161,10sleep21327777-21tr23:45:152
13172702161,4sleep01055493-21diskmemload23:40:040
12901312161,10sleep01055493-21diskmemload23:24:290
11980312161,10sleep11199096-21memory22:30:171
11571452161,8sleep01055493-21diskmemload22:05:560
11510622160,8sleep11151077-21ssh22:04:451
11046742161,2sleep10-21swapper/121:35:581
10872252160,10sleep01055493-21diskmemload21:25:380
10814892161,9sleep01055493-21diskmemload21:24:350
92625899151,9cyclictest986946-21taskset20:05:053
92625899151,8cyclictest955309-21taskset19:35:023
92625899151,2cyclictest0-21swapper/319:55:203
92625899151,12cyclictest0-21swapper/320:45:243
92625899150,13cyclictest0-21swapper/319:25:123
92625899150,13cyclictest0-21swapper/319:25:113
92625899150,12cyclictest0-21swapper/320:10:133
12560332151,7sleep21055493-21diskmemload23:05:032
12058862151,6sleep20-21swapper/222:35:162
11757782151,9sleep11175792-21ssh22:17:441
11245672151,3sleep10-21swapper/121:49:011
10707942151,7sleep01055493-21diskmemload21:17:050
9940732141,8sleep0995897-21grep20:10:190
92625899141,9cyclictest1018814-21chrt20:35:073
13774512140,9sleep21377465-21ssh00:14:222
13695722141,3sleep01369601-21apt-get00:10:110
13490282140,7sleep01055493-21diskmemload23:56:190
13421212141,4sleep21342129-21ssh23:53:402
13341042141,9sleep11334118-21ssh23:49:391
12790452141,8sleep01279056-21ssh23:16:140
12752942141,8sleep21277046-21grep23:15:172
12710272148,2sleep20-21swapper/223:12:082
12427562141,8sleep11242820-21/usr/sbin/munin22:55:201
12375172141,8sleep21237528-21ssh22:54:072
12184742141,4sleep21218488-21ssh22:41:532
11645692141,3sleep21164719-21ssh22:10:192
11335552141,3sleep11133569-21ssh21:54:271
9495332131,8sleep0949599-21apt-config19:30:000
9495332131,8sleep0949599-21apt-config19:30:000
9456312131,8sleep1947345-21cut19:25:171
9456312131,8sleep1947345-21cut19:25:171
9317432131,8sleep0932126-21timerwakeupswit19:15:010
9306462131,7sleep0926548-21/usr/sbin/munin19:10:200
14201452130,1sleep00-21swapper/000:38:410
14012782131,2sleep20-21swapper/200:26:432
13783442130,2sleep10-21swapper/100:15:121
13702072131,8sleep10-21swapper/100:10:161
13485292131,7sleep21348544-21ssh23:55:422
13251122131,8sleep11325123-21ssh23:44:211
13040202131,8sleep01304076-21/usr/sbin/munin23:30:180
12977032131,1sleep20-21swapper/223:28:002
12731072131,4sleep01273122-21ssh23:14:510
12710912131,8sleep11271105-21ssh23:12:151
12570662131,8sleep01258731-21cut23:05:160
12192892130,5sleep00-21swapper/022:42:560
11408202131,7sleep21140833-21ssh21:57:322
11252212131,5sleep01055493-21diskmemload21:49:570
10825532131,8sleep11082680-21fschecks_time21:25:151
9605932121,7sleep1960643-21/usr/sbin/munin19:40:111
14132692121,7sleep21413400-21cat00:35:172
13972832121,7sleep01399044-21tr00:25:170
12873282120,8sleep21287330-21ssh23:20:462
12612352121,5sleep10-21swapper/123:05:421
12516692122,4sleep01251738-21ntp_states23:00:240
12378152121,4sleep01055493-21diskmemload22:54:300
12215192120,7sleep21221614-21cut22:45:152
12183622123,5sleep11169262-21kworker/u16:3+xprtiod22:41:441
11834422121,2sleep21183445-21ssh22:21:202
11074002121,7sleep01055493-21diskmemload21:39:380
10709562121,7sleep1761-21sshd21:17:181
10452592121,5sleep01045463-21diskstats21:00:140
10280952121,7sleep11028143-21gcc20:40:231
9442752111,4sleep1944324-21munin-run19:24:591
9302032110,1sleep10-21swapper/119:10:171
14120342111,6sleep11055493-21diskmemload00:34:291
13423682111,2sleep10-21swapper/123:54:001
12294952111,2sleep01229508-21ssh22:49:580
12035182111,5sleep21055493-21diskmemload22:34:592
11936702110,7sleep21193683-21rm22:28:392
11648182111,5sleep11164882-21ntp_states22:10:211
11333332111,2sleep00-21swapper/021:54:090
10959452111,2sleep20-21swapper/221:30:472
10958372111,2sleep10-21swapper/121:30:381
10909242111,3sleep00-21swapper/021:30:120
10818122111,4sleep11055493-21diskmemload21:25:001
10587942111,4sleep21059841-21memory21:10:182
10559052111,5sleep11056179-21df_inode21:10:131
9907692100,1sleep00-21swapper/020:05:190
9869542100,5sleep1986973-21apt-get20:05:121
9855662101,4sleep1985679-21ntpq20:00:181
9775552100,2sleep0171rcu_preempt19:55:170
9648802101,5sleep2964885-21sensors_temp19:40:252
9556052101,4sleep1955729-21perl19:35:141
9508702104,3sleep00-21swapper/019:30:160
14098512101,5sleep21409865-21ssh00:31:332
13922092101,3sleep21055493-21diskmemload00:20:552
13681742100,2sleep11368189-21ssh00:08:391
13608512101,4sleep01361111-21df00:05:130
13577782101,5sleep01357791-21ssh00:01:250
13563582100,2sleep10-21swapper/100:00:221
13093032100,6sleep11309335-21kthreadcore23:35:161
13093032100,6sleep11309335-21kthreadcore23:35:151
12428212101,4sleep21242887-21ntp_states22:55:212
12280122101,3sleep10-21swapper/122:47:581
12000722101,2sleep00-21swapper/022:30:320
11943132101,6sleep01194325-21diskmemload22:29:290
11867672101,5sleep11186906-21gltestperf22:25:131
11228782101,2sleep20-21swapper/221:46:412
11088362101,5sleep21110476-21cut21:40:172
10649412100,6sleep21065028-21fschecks_time21:15:142
10504902101,4sleep01050509-21apt-get21:05:100
10293122101,4sleep11029330-21apt-get20:45:121
992191291,3sleep1992210-21apt-get20:10:121
990941293,2sleep2990987-21ntpq20:05:212
965849291,4sleep0965911-21sort19:45:110
933857291,2sleep20-21swapper/219:15:122
1399765291,4sleep11395505-21/usr/sbin/munin00:25:221
1358310291,4sleep21358322-21sh00:02:112
1344177294,2sleep10-21swapper/123:55:171
1330529291,4sleep01330758-21/usr/sbin/munin23:45:250
1315474290,1sleep20-21swapper/223:37:582
1315474290,1sleep20-21swapper/223:37:572
1306837291,2sleep20-21swapper/223:33:092
1289778291,4sleep11289792-21ssh23:24:021
1237990290,1sleep10-21swapper/122:54:441
1207994291,3sleep11208054-21ntpq22:35:191
1182811291,4sleep11182824-21ssh22:20:311
1176116294,2sleep00-21swapper/022:18:110
1166972290,5sleep01055493-21diskmemload22:12:240
1157071291,2sleep20-21swapper/222:05:502
1142976291,2sleep20-21swapper/222:00:132
1141859291,2sleep00-21swapper/021:59:070
1139637290,1sleep10-21swapper/121:55:551
1125595291,3sleep21125609-21ssh21:50:072
1115127290,1sleep10-21swapper/121:43:201
1089269291,4sleep21089280-21ssh21:28:172
1019425291,4sleep11020967-21cut20:35:181
1013735291,3sleep11013870-21diskstats20:30:121
1008322291,3sleep11008341-21apt-get20:25:121
998844281,3sleep11000594-21kthreadcore20:15:181
981699280,2sleep20-21swapper/220:00:112
967535281,3sleep1969326-21grep19:45:161
956768281,3sleep0957366-21kthreadcore19:35:170
1420418281,3sleep12831240-21snmpd00:39:011
1394309280,1sleep10-21swapper/100:23:511
1339666281,3sleep01339680-21ssh23:50:300
1321376281,3sleep21321498-21ntpq23:40:172
1253386281,3sleep21253400-21ssh23:01:532
1245907281,3sleep01245921-21ssh22:58:350
1174244280,4sleep20-21swapper/222:15:362
1157995280,2sleep10-21swapper/122:07:011
1107970280,1sleep00-21swapper/021:40:030
1105610281,3sleep21105624-21ssh21:37:152
1073465281,3sleep21073479-21ssh21:20:082
1055874281,2sleep00-21swapper/021:10:120
1043873281,3sleep01043922-21ntpq20:55:200
1039847281,2sleep20-21swapper/220:55:112
1027562281,3sleep21027907-21missed_timers20:40:192
1014154281,3sleep01015541-21kthreadcore20:30:160
1012310281,3sleep21012359-21ntpq20:25:212
1008061281,3sleep11008107-21systemctl20:24:591
986395270,1sleep00-21swapper/020:01:140
974852270,2sleep1975058-21strings19:50:161
971090270,2sleep20-21swapper/219:50:102
954758270,1sleep10-21swapper/119:31:141
944166270,1sleep20-21swapper/219:23:362
931581270,4sleep20-21swapper/219:14:542
1291610271,3sleep01293203-21kthreadcore23:25:160
1251304271,3sleep11251539-21ssh23:00:211
1054786271,2sleep21054889-21/usr/sbin/munin21:05:252
1035170271,2sleep20-21swapper/220:50:132
1034588270,2sleep10-21swapper/120:50:091
1029873270,3sleep21030542-21cut20:45:172
1023102271,3sleep21018822-21/usr/sbin/munin20:35:272
1004161271,2sleep00-21swapper/020:20:170
1002246270,1sleep00-21swapper/020:16:580
976733261,2sleep20-21swapper/219:55:152
976653261,2sleep10-21swapper/119:55:141
970621260,1sleep20-21swapper/219:47:222
955013260,1sleep20-21swapper/219:34:272
943659261,2sleep00-21swapper/019:20:270
1051306261,2sleep10-21swapper/121:05:151
1049541261,2sleep10-21swapper/121:00:271
1044857261,2sleep11044846-21fwupd20:59:591
1039426260,1sleep00-21swapper/020:52:570
1033981260,1sleep00-21swapper/020:45:340
1018821260,2sleep00-21swapper/020:35:130
1012628261,2sleep00-21swapper/020:25:270
1003402260,3sleep20-21swapper/220:20:152
1002492261,2sleep20-21swapper/220:20:002
996143250,1sleep20-21swapper/220:10:212
948620251,1sleep20-21swapper/219:25:222
948620251,1sleep20-21swapper/219:25:212
938046250,1sleep10-21swapper/119:15:231
1028043250,1sleep00-21swapper/020:40:220
1017333250,1sleep21017506-21strings20:30:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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