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2026-08-07 - 14:10
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rackeslot8.osadl.org (updated Fri Aug 07, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
102339423600,2sleep1222-21plymouthd23:00:111
9905882330,7sleep244-21ksoftirqd/222:36:542
693978992720,5cyclictest0-21swapper/300:15:003
693978992623,1cyclictest0-21swapper/323:30:203
693978992522,1cyclictest0-21swapper/300:20:273
6971122240,9sleep014-21ksoftirqd/019:10:170
693978992420,1cyclictest0-21swapper/300:00:383
693978992320,1cyclictest0-21swapper/323:20:153
693978992219,1cyclictest0-21swapper/323:00:263
693978992219,1cyclictest0-21swapper/322:20:243
693978992219,1cyclictest0-21swapper/320:25:003
693978992210,10cyclictest944532-21turbostat22:14:543
693978992118,1cyclictest0-21swapper/322:40:003
693978992118,1cyclictest0-21swapper/322:25:133
693978992118,1cyclictest0-21swapper/322:00:113
693978992118,1cyclictest0-21swapper/321:00:073
69397899211,15cyclictest998960-21taskset22:43:063
69397899211,15cyclictest798482-21taskset20:27:053
693978992018,1cyclictest0-21swapper/300:35:013
693978992017,1cyclictest0-21swapper/322:45:163
693978992017,1cyclictest0-21swapper/322:32:353
693978992017,1cyclictest0-21swapper/321:55:203
693978992017,1cyclictest0-21swapper/319:20:163
693978992016,1cyclictest0-21swapper/321:10:233
693978992011,6cyclictest10384582sleep323:09:003
69397899201,15cyclictest896605-21taskset21:37:433
69397899201,14cyclictest779301-21taskset20:13:033
69397899201,14cyclictest734619-21turbostat19:40:013
69397899201,14cyclictest1014015-21taskset22:51:323
693978991916,1cyclictest0-21swapper/323:10:053
693978991916,1cyclictest0-21swapper/300:20:003
69397899191,15cyclictest913473-21taskset21:50:123
69397899191,14cyclictest942898-21taskset22:05:293
69397899191,14cyclictest897720-21taskset21:40:063
69397899191,14cyclictest877013-21taskset21:25:203
69397899191,14cyclictest837302-21sleep21:00:003
69397899191,14cyclictest819829-21taskset20:45:183
69397899188,7cyclictest8050112sleep320:33:133
69397899182,12cyclictest830542-21taskset20:51:243
693978991815,1cyclictest0-21swapper/323:35:223
693978991815,1cyclictest0-21swapper/321:45:123
693978991815,1cyclictest0-21swapper/321:30:193
693978991815,1cyclictest0-21swapper/320:40:113
693978991815,1cyclictest0-21swapper/319:45:213
69397899181,13cyclictest958297-21taskset22:15:273
69397899181,13cyclictest850248-21taskset21:09:553
69397899181,13cyclictest760493-21taskset20:00:113
69397899181,13cyclictest694189-21chrt19:10:123
69397899181,13cyclictest1156846-21sleep00:29:553
69397899181,13cyclictest1130837-21taskset00:05:203
69397899181,13cyclictest1069875-21taskset23:28:483
69397899181,13cyclictest1053260-21taskset23:16:223
69397899172,12cyclictest740840-21taskset19:42:113
693978991715,0cyclictest0-21swapper/320:15:153
693978991714,1cyclictest0-21swapper/323:55:243
693978991714,1cyclictest0-21swapper/323:51:043
69397899171,13cyclictest811350-21taskset20:37:163
69397899171,13cyclictest773007-21taskset20:08:543
69397899171,13cyclictest1179952-21taskset00:39:043
69397899171,13cyclictest1022175-21taskset22:57:323
69397899171,12cyclictest754052-21taskset19:55:113
69397899171,12cyclictest727870-21taskset19:30:413
69397899171,12cyclictest707917-21taskset19:15:223
7994552161,2sleep00-21swapper/020:30:170
693978991614,1cyclictest0-21swapper/323:43:303
693978991614,1cyclictest0-21swapper/319:25:173
69397899161,12cyclictest872638-21taskset21:21:223
69397899161,12cyclictest864057-21taskset21:15:253
69397899161,11cyclictest1094241-21taskset23:45:083
69397899160,11cyclictest747654-21taskset19:50:013
11183422161,4sleep01117570-21sendmail-msp00:00:180
88905921510,2sleep1889065-21ssh21:33:401
7079602151,10sleep0708000-21ntpq19:15:240
11335902150,4sleep01133596-21ssh00:10:120
9894402142,8sleep0989483-21ntpq22:35:220
10915682141,9sleep21086044-21sendmail-msp23:40:222
9633602130,2sleep2963361-21kthreadcore22:20:202
9260142131,9sleep1926415-21grep21:55:221
8668642130,10sleep1867443-21sed21:20:211
11103772130,6sleep11110911-21ps23:55:171
11076422131,9sleep11107808-21sed23:50:291
11009642131,9sleep11100968-21ssh23:47:471
10434642131,9sleep21039152-21/usr/sbin/munin23:10:192
9602042121,4sleep2960225-21cron22:19:592
8802422121,4sleep1880248-21ssh21:25:511
8664492121,1sleep20-21swapper/221:20:182
8304742120,1sleep20-21swapper/220:50:322
693978991210,1cyclictest0-21swapper/319:10:013
11571852121,8sleep01157336-21df_inode00:25:160
11497242122,7sleep00-21swapper/000:20:180
10000162121,8sleep21000014-21apt-get22:45:132
9522202111,7sleep00-21swapper/022:14:410
9290352111,3sleep1929072-21apt-get22:00:111
8893742110,5sleep2889378-21ssh21:34:292
7362872110,8sleep1737549-21cut19:40:191
7339452111,7sleep2734196-21unixbench_singl19:35:272
11467522111,7sleep11146786-21ntpq00:15:251
10157552111,1sleep10-21swapper/122:55:161
9894922101,5sleep1989540-21ntpq22:35:221
9817642102,5sleep0981798-21ntpq22:30:250
9056002101,6sleep2222-21plymouthd21:45:042
8882482100,7sleep0888254-21ssh21:31:190
8585412101,6sleep0222-21plymouthd21:15:110
8559182101,4sleep1855960-21ntpq21:10:221
8049762100,3sleep2222-21plymouthd20:32:522
7953812102,5sleep2796682-21kthreadcore20:25:172
7608962100,7sleep0760230-21sendmail-msp20:00:180
7348822101,6sleep2734884-21/usr/sbin/munin19:40:112
7027232100,2sleep10-21swapper/119:15:131
6879962101,5sleep2688111-21/usr/sbin/munin19:05:162
11802792100,7sleep21180413-21latency_hist00:40:012
10910092101,6sleep11091566-21ls23:40:221
10786512101,6sleep2222-21plymouthd23:35:142
10776722100,1sleep00-21swapper/023:33:440
10549712101,5sleep21054652-21sendmail-msp23:20:132
10255432100,7sleep01026836-21tr23:00:190
10080022101,6sleep01008120-21grep22:50:170
992259291,5sleep2992378-21perl22:40:172
968117292,4sleep0222-21plymouthd22:25:000
953116290,6sleep0953421-21irqcore22:15:160
944862291,2sleep10-21swapper/122:10:131
944757290,2sleep2222-21plymouthd22:10:022
944097290,1sleep20-21swapper/222:08:582
934369290,2sleep2934413-21ssh22:00:232
906646290,6sleep1907267-21kthreadcore21:45:191
904670290,7sleep0904676-21ssh21:43:140
904188290,3sleep1904194-21ssh21:41:501
895192291,5sleep0895241-21ntpq21:35:240
864211290,6sleep1856544-21kworker/u16:2+rpciod21:15:281
855967290,3sleep2856008-21ntpq21:10:232
804178292,4sleep1804215-21ntpq20:30:221
798637290,2sleep1222-21plymouthd20:29:051
772237292,3sleep2772260-21ntpq20:05:252
747265290,5sleep1222-21plymouthd19:48:171
741015290,5sleep0222-21plymouthd19:44:270
728024290,1sleep10-21swapper/119:32:361
721809291,4sleep2721992-21latency_hist19:30:012
700173290,1sleep10-21swapper/119:13:241
687842290,4sleep00-21swapper/019:05:140
1140809290,6sleep21140817-21ssh00:14:152
1123191290,6sleep21123233-21ld00:00:242
1085789290,2sleep0222-21plymouthd23:39:240
1070601292,4sleep11070633-21apt-get23:30:121
1056399290,7sleep01057871-21grep23:20:200
1037982292,4sleep11037986-21ssh23:07:471
1022915290,2sleep2222-21plymouthd22:59:382
997498281,4sleep0997541-21ntp_states22:40:270
983193280,5sleep2983199-21ssh22:33:042
975954281,4sleep2975958-21ssh22:29:542
973706281,3sleep00-21swapper/022:25:230
959127280,5sleep1959133-21ssh22:17:021
921883281,4sleep2922666-21kthreadcore21:55:192
903176281,4sleep2897471-21sendmail-msp21:40:262
897036281,3sleep2222-21plymouthd21:38:592
872850280,1sleep00-21swapper/021:21:560
843134281,4sleep0843279-21wc21:00:270
838073281,4sleep2838985-21irqstats21:00:182
829935281,4sleep0829978-21ntp_states20:50:210
817793282,3sleep2222-21plymouthd20:41:222
811849281,4sleep1811627-21sendmail-msp20:40:081
805428281,3sleep0805461-21apt-get20:35:140
788020280,5sleep0789419-21grep20:20:190
785554280,4sleep2222-21plymouthd20:16:392
774758283,2sleep1331ktimers/120:10:181
747093280,5sleep2222-21plymouthd19:46:052
728056280,2sleep2222-21plymouthd19:33:012
717357280,5sleep1719102-21kthreadcore19:25:191
715382280,1sleep1222-21plymouthd19:24:461
699305281,4sleep2699351-21ntpq19:10:202
1164531282,3sleep2222-21plymouthd00:29:462
1157338281,4sleep11157458-21perl00:25:171
1127221281,4sleep01128428-21kthreadcore00:05:180
1125809281,3sleep21125812-21apt-get00:05:122
1119126281,4sleep11117570-21sendmail-msp00:00:191
1109919281,3sleep01109958-21apt-get23:55:120
1102102281,4sleep21102141-21apt-get23:50:132
1083640281,4sleep11083732-21ntpq23:35:211
1075726281,4sleep21075852-21ntpq23:30:202
1069181280,4sleep1222-21plymouthd23:26:551
1053929280,2sleep11053935-21ssh23:18:131
1007793281,3sleep11007828-21apt-get22:50:141
1007437280,2sleep11007443-21ssh22:49:581
974752271,3sleep1222-21plymouthd22:26:361
927379270,1sleep00-21swapper/021:56:120
913465270,4sleep2913472-21ssh21:50:122
905698270,3sleep0905704-21ssh21:45:130
897150270,3sleep1222-21plymouthd21:39:181
875685271,4sleep2877012-21cat21:25:202
857200270,4sleep0857206-21ssh21:12:180
837979270,1sleep10-21swapper/121:00:161
837259270,4sleep11-21systemd21:00:011
837237270,1sleep00-21swapper/020:59:440
832016271,3sleep2832650-21kthreadcore20:55:172
823922271,3sleep0222-21plymouthd20:45:290
823633270,1sleep2222-21plymouthd20:45:262
818380271,2sleep10-21swapper/120:45:141
810608271,3sleep2810647-21ntpq20:35:232
792581271,2sleep00-21swapper/020:25:110
786103271,3sleep20-21swapper/220:20:092
772754270,3sleep0222-21plymouthd20:05:390
759230270,2sleep20-21swapper/219:55:232
753584270,1sleep00-21swapper/019:52:290
748630270,4sleep2749547-21cut19:50:172
702759271,2sleep20-21swapper/219:15:142
689208271,2sleep10-21swapper/119:05:191
1172849270,3sleep0222-21plymouthd00:35:140
1172084270,1sleep00-21swapper/000:33:570
1171836272,3sleep2222-21plymouthd00:33:202
1156051270,5sleep20-21swapper/200:22:492
1147519270,4sleep21147525-21ssh00:16:072
1133512270,1sleep10-21swapper/100:10:051
1109968273,2sleep2222-21plymouthd23:55:142
1108560270,4sleep0222-21plymouthd23:52:080
1085983271,4sleep00-21swapper/023:40:010
1069315270,4sleep21031245-21kworker/u16:4+rpciod23:27:162
1061492270,5sleep11061498-21ssh23:22:171
1039095271,3sleep11038884-21appstreamcli23:10:021
1031272270,3sleep01031309-21apt-get23:05:130
1028785271,2sleep20-21swapper/223:00:262
1015537270,1sleep00-21swapper/022:55:070
1006101271,3sleep0222-21plymouthd22:46:130
998860261,2sleep1222-21plymouthd22:42:451
983479260,3sleep1983485-21ssh22:33:551
966676260,1sleep10-21swapper/122:20:561
943015260,2sleep1222-21plymouthd22:05:551
937177261,2sleep00-21swapper/022:05:140
935837260,3sleep0222-21plymouthd22:02:500
919340260,3sleep1919346-21ssh21:50:451
918631260,3sleep0918683-21ntpq21:50:240
880593260,3sleep0222-21plymouthd21:26:460
864468260,3sleep2222-21plymouthd21:15:412
850071260,1sleep10-21swapper/121:07:391
830485260,1sleep10-21swapper/120:50:391
812252261,2sleep0812486-21irqcore20:40:140
786107261,2sleep1786140-21apt-get20:20:121
785480260,1sleep00-21swapper/020:15:410
785471260,2sleep1222-21plymouthd20:15:341
779145260,3sleep00-21swapper/020:11:050
778589260,3sleep2778619-21ntpq20:10:312
769698261,2sleep10-21swapper/120:05:191
766590260,1sleep20-21swapper/220:03:332
766375260,1sleep10-21swapper/120:00:471
759897261,2sleep00-21swapper/019:56:320
754045260,2sleep1222-21plymouthd19:55:051
747399260,1sleep00-21swapper/019:49:590
728514260,2sleep00-21swapper/019:35:120
727888260,1sleep00-21swapper/019:30:560
716727261,3sleep0717356-21kthreadcore19:25:180
715360260,1sleep20-21swapper/219:24:312
714486261,2sleep00-21swapper/019:20:250
1164911260,1sleep10-21swapper/100:30:101
1154423261,3sleep11154567-21ntpq00:20:241
1094262260,2sleep20-21swapper/223:45:122
1069540260,4sleep0850275-21diskmemload23:27:500
1052954260,3sleep01052960-21ssh23:15:350
1037331260,3sleep2222-21plymouthd23:05:512
1013679261,2sleep20-21swapper/222:50:402
850127250,1sleep20-21swapper/221:08:242
844128250,2sleep00-21swapper/021:05:130
805464250,2sleep10-21swapper/120:35:141
747697250,2sleep10-21swapper/119:50:131
729600250,2sleep10-21swapper/119:35:181
1178701250,2sleep1222-21plymouthd00:35:351
1141609250,3sleep01141811-21sh00:15:170
1125994250,3sleep11126200-21smartctl00:05:151
1100329250,2sleep0222-21plymouthd23:46:020
1048510250,2sleep2222-21plymouthd23:15:212
1040590250,2sleep00-21swapper/023:10:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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