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2026-08-18 - 01:20
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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
Characteristics of the 792 highest latencies:
System rackeslot2.osadl.org (updated Mon Aug 17, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189455821290,2sleep30-21swapper/311:25:023
197676721010,3sleep10-21swapper/112:20:111
16131082980,2sleep11613102-21awk08:05:011
20034892950,2sleep30-21swapper/312:35:203
1549182992421,2cyclictest1752336-21sh09:50:011
1549181992421,2cyclictest1745070-21sh09:45:020
3240591231,4phc2sys0-21swapper/309:04:513
3240591231,4phc2sys0-21swapper/309:04:513
1549183992316,3cyclictest0-21swapper/208:09:522
1549181992314,8cyclictest1720611-21unixbench_singl09:25:220
1549182992216,2cyclictest69250irq/121-eno110:20:141
1549181992213,5cyclictest1834376-21runrttasks10:44:050
1549182992119,1cyclictest501rcuop/211:48:021
1549182992118,2cyclictest664-21dbus-daemon12:20:021
1549182992118,2cyclictest1564340-21idleruntime-cro07:25:001
1549182992117,3cyclictest1738519-21gltestperf09:40:151
154918199218,7cyclictest0-21swapper/010:34:530
1549181992118,2cyclictest1812639-21munin-plugin-st10:30:010
1549181992115,5cyclictest0-21swapper/008:25:030
1549183992017,1cyclictest0-21swapper/211:20:012
1549183992017,1cyclictest0-21swapper/207:40:012
1549183992017,1cyclictest0-21swapper/207:35:002
1549182992017,2cyclictest1894253-21systemd11:25:011
1549182992011,4cyclictest0-21swapper/109:20:011
1157598200,3rtkit-daemon1309-21mta-sts-daemon09:50:381
17850722190,2sleep20-21swapper/210:10:182
1549183991917,1cyclictest0-21swapper/211:50:022
1549183991917,1cyclictest0-21swapper/211:05:022
1549183991916,1cyclictest0-21swapper/212:35:002
1549183991916,1cyclictest0-21swapper/208:55:012
1549182991916,2cyclictest0-21swapper/108:25:011
1549181991916,2cyclictest0-21swapper/009:35:010
1549181991913,5cyclictest1770665-21kthreadcore10:00:160
1549181991912,6cyclictest0-21swapper/011:00:010
3240591181,4phc2sys0-21swapper/311:49:523
1549183991816,1cyclictest0-21swapper/211:25:012
1549183991816,1cyclictest0-21swapper/210:25:022
1549183991815,1cyclictest0-21swapper/210:55:002
1549183991815,1cyclictest0-21swapper/210:45:152
1549183991815,1cyclictest0-21swapper/209:50:112
1549183991815,1cyclictest0-21swapper/209:25:132
154918299188,3cyclictest501rcuop/211:10:071
1549182991815,2cyclictest684-21systemd-logind07:55:021
1549182991815,2cyclictest0-21swapper/109:10:011
1549182991814,3cyclictest1954270-21cstates12:05:101
1549182991814,1cyclictest601rcuop/311:08:141
154918299181,2cyclictest1555475-21munin-run07:15:021
154918299181,2cyclictest1555475-21munin-run07:15:021
154918199189,7cyclictest0-21swapper/011:35:200
154918199189,5cyclictest714-21gdbus11:30:020
154918199189,2cyclictest0-21swapper/011:15:160
154918199188,5cyclictest0-21swapper/010:50:010
154918199187,6cyclictest0-21swapper/012:24:530
1549181991814,2cyclictest1990902-21aten2.4-expect12:30:020
1549181991811,6cyclictest0-21swapper/012:30:190
3240591171,2phc2sys0-21swapper/312:08:203
3240591170,2phc2sys0-21swapper/307:09:573
3240591170,1phc2sys0-21swapper/311:15:573
1549183991715,1cyclictest0-21swapper/212:10:112
1549183991715,1cyclictest0-21swapper/212:00:032
1549183991714,1cyclictest0-21swapper/210:20:012
1549183991714,1cyclictest0-21swapper/210:00:022
1549183991714,1cyclictest0-21swapper/208:19:562
1549183991714,1cyclictest0-21swapper/207:25:002
154918299179,3cyclictest1990461-21/usr/sbin/munin12:30:151
154918299179,3cyclictest1820144-21kworker/u16:0+xprtiod10:50:061
154918299178,3cyclictest501rcuop/209:12:271
154918299177,2cyclictest601rcuop/310:56:161
1549182991714,2cyclictest2003327-21mailstats12:35:191
1549182991714,2cyclictest1783260-21/usr/sbin/munin10:10:031
1549182991714,2cyclictest1773537-21grep10:00:231
1549182991714,2cyclictest1765819-21tail09:55:231
1549182991714,2cyclictest1549179-21cyclictest10:45:161
1549182991712,2cyclictest1309-21mta-sts-daemon10:30:221
154918299171,14cyclictest1649988-21latency_hist08:35:011
1549182991711,1cyclictest601rcuop/309:33:151
154918199179,7cyclictest0-21swapper/011:24:530
154918199179,4cyclictest0-21swapper/011:05:020
154918199176,6cyclictest0-21swapper/009:20:110
1549181991714,2cyclictest1969243-21cut12:15:110
1549181991714,2cyclictest1938984-21latency_hist11:55:010
1549181991714,2cyclictest1825208-21wc10:35:180
1549181991714,2cyclictest1767903-21apt-config10:00:020
1549181991714,2cyclictest1760098-21apt-key09:55:010
1549181991714,2cyclictest1752686-21systemd09:50:020
1549181991712,4cyclictest1976159-21kworker/u16:1+nfsiod12:39:550
1549181991710,6cyclictest0-21swapper/009:20:010
3240591161,2phc2sys0-21swapper/311:27:233
3240591160,3phc2sys0-21swapper/310:08:233
3240591160,2phc2sys0-21swapper/311:11:113
3240591160,2phc2sys0-21swapper/310:43:303
3240591160,2phc2sys0-21swapper/309:26:033
3240591160,2phc2sys0-21swapper/309:12:393
1549183991614,1cyclictest0-21swapper/212:25:022
1549183991614,1cyclictest0-21swapper/211:25:122
1549183991614,1cyclictest0-21swapper/209:40:012
1549183991613,1cyclictest0-21swapper/210:40:232
1549183991613,1cyclictest0-21swapper/210:36:512
1549183991613,1cyclictest0-21swapper/210:05:132
1549183991613,1cyclictest0-21swapper/209:45:182
1549183991613,1cyclictest0-21swapper/209:45:012
1549183991613,1cyclictest0-21swapper/209:35:012
1549183991613,1cyclictest0-21swapper/209:05:022
1549183991613,1cyclictest0-21swapper/209:05:022
1549183991613,1cyclictest0-21swapper/208:40:182
154918299168,3cyclictest501rcuop/209:37:281
154918299168,2cyclictest1894243-21kworker/1:0+events_freezable11:50:121
154918299167,3cyclictest501rcuop/211:35:481
154918299167,3cyclictest501rcuop/208:38:411
154918299166,3cyclictest501rcuop/211:19:211
154918299164,8cyclictest1760356-21kworker/u16:1+xprtiod10:36:551
154918299162,8cyclictest664-21dbus-daemon07:30:011
1549182991614,1cyclictest1307-21mta-sts-daemon08:40:121
1549182991613,2cyclictest1961644-21tr12:10:091
1549182991613,2cyclictest1806206-21sed10:25:111
1549182991613,2cyclictest1790419-21munin-plugin-st10:15:011
1549182991613,2cyclictest1720393-21xargs09:25:211
1549182991613,2cyclictest1558236-21latency_hist07:20:001
1549182991613,2cyclictest0-21swapper/108:30:011
1549182991612,3cyclictest1906949-21pmu-power11:30:171
1549182991612,3cyclictest1860119-21kthreadcore11:00:161
1549182991612,3cyclictest1793264-21kthreadcore10:15:151
154918299160,4cyclictest0-21swapper/112:03:091
154918199168,4cyclictest1732325-21ssh09:35:150
154918199168,2cyclictest0-21swapper/012:10:150
154918199167,5cyclictest1692526-21/usr/sbin/munin09:10:150
154918199165,6cyclictest0-21swapper/012:00:020
154918199165,6cyclictest0-21swapper/009:05:030
154918199161,9cyclictest1309-21mta-sts-daemon10:54:520
154918199161,6cyclictest664-21dbus-daemon07:30:010
1549181991613,2cyclictest1797995-21sh10:20:020
1549181991613,2cyclictest1783951-21sed10:10:150
1549181991613,2cyclictest1620110-21cut08:10:110
1549181991613,2cyclictest1576806-21cut07:35:020
154918199160,6cyclictest1662135-21sshd08:45:000
3240591159,2phc2sys0-21swapper/310:53:003
3240591150,2phc2sys0-21swapper/310:58:533
3240591150,2phc2sys0-21swapper/310:46:593
3240591150,2phc2sys0-21swapper/307:22:333
3240591150,1phc2sys0-21swapper/309:53:293
154918399151,9cyclictest0-21swapper/209:20:012
154918399151,7cyclictest0-21swapper/208:30:012
1549183991513,1cyclictest0-21swapper/212:25:122
1549183991513,1cyclictest0-21swapper/211:45:032
1549183991513,1cyclictest0-21swapper/211:40:022
1549183991513,1cyclictest0-21swapper/207:13:442
1549183991513,1cyclictest0-21swapper/207:13:442
1549183991512,1cyclictest0-21swapper/212:15:142
1549183991512,1cyclictest0-21swapper/208:48:132
1549183991511,2cyclictest0-21swapper/207:58:102
154918299157,3cyclictest501rcuop/207:32:091
154918299156,3cyclictest501rcuop/208:09:561
154918299155,7cyclictest1899478-21head11:25:181
154918299155,3cyclictest501rcuop/207:37:461
1549182991513,1cyclictest1922132-21grep11:40:211
1549182991512,2cyclictest1832643-21wc10:40:201
1549182991512,2cyclictest1681952-21kthreadcore09:00:141
1549182991512,2cyclictest1681952-21kthreadcore09:00:141
1549182991512,2cyclictest1672445-21kthreadcore08:50:161
1549182991512,2cyclictest1621793-21kthreadcore08:10:141
1549182991512,2cyclictest1594920-21systemd-run07:50:011
1549182991512,2cyclictest1309-21mta-sts-daemon09:20:551
1549182991511,3cyclictest1678767-21kthreadcore08:55:151
1549182991511,3cyclictest1586030-21kthreadcore07:40:161
154918199158,6cyclictest0-21swapper/011:30:190
154918199157,2cyclictest0-21swapper/010:05:110
154918199156,7cyclictest1683204-21tr09:00:140
154918199156,7cyclictest1683204-21tr09:00:140
1549181991512,2cyclictest1948000-21kthreadcore12:00:160
1549181991512,2cyclictest1924205-21sh11:45:020
1549181991512,2cyclictest1865737-21irqcore11:05:140
1549181991512,2cyclictest1803234-21switchtime10:20:210
1549181991512,2cyclictest1600904-21cron07:55:010
1549181991511,3cyclictest1306-21mta-sts-daemon08:30:030
1549181991510,4cyclictest715-21wpa_supplicant08:58:430
3240591140,6phc2sys0-21swapper/308:44:543
3240591140,2phc2sys0-21swapper/307:54:553
1549183991412,1cyclictest0-21swapper/212:00:222
1549183991412,1cyclictest0-21swapper/211:50:382
1549183991412,1cyclictest0-21swapper/211:10:142
1549183991412,1cyclictest0-21swapper/209:20:372
1549183991412,1cyclictest0-21swapper/209:10:152
1549183991411,1cyclictest0-21swapper/210:30:192
1549183991411,1cyclictest0-21swapper/210:25:202
1549183991411,1cyclictest0-21swapper/208:35:162
1549183991411,1cyclictest0-21swapper/208:10:112
1549183991411,1cyclictest0-21swapper/207:40:152
1549183991411,1cyclictest0-21swapper/207:27:122
1549183991410,2cyclictest0-21swapper/210:00:572
1549183991410,2cyclictest0-21swapper/208:33:402
154918299146,3cyclictest501rcuop/208:47:301
154918299146,3cyclictest501rcuop/207:56:491
1549182991411,2cyclictest1983771-21cpuspeed_turbos12:25:101
154918199147,6cyclictest0-21swapper/011:45:160
154918199145,5cyclictest1593749-21grep07:45:180
1549181991411,2cyclictest688-21in:imuxsock08:36:330
1549181991411,2cyclictest1669742-21kernelversion08:50:140
1549181991411,2cyclictest1583748-21irqcore07:40:140
1549181991411,2cyclictest1307-21mta-sts-daemon08:01:160
1549181991411,2cyclictest1306-21mta-sts-daemon08:05:150
1549181991411,2cyclictest0-21swapper/012:05:140
154918199140,4cyclictest491rcuog/211:12:070
154918199140,13cyclictest1606985-21cron08:00:010
3240591130,4phc2sys0-21swapper/309:40:203
3240591130,2phc2sys0-21swapper/311:42:103
3240591130,2phc2sys0-21swapper/310:25:313
3240591130,2phc2sys0-21swapper/309:49:213
3240591130,2phc2sys0-21swapper/309:37:503
3240591130,2phc2sys0-21swapper/309:32:213
3240591130,2phc2sys0-21swapper/308:54:563
3240591130,1phc2sys0-21swapper/311:57:053
3240591130,1phc2sys0-21swapper/311:35:473
3240591130,1phc2sys0-21swapper/307:11:233
3240591130,1phc2sys0-21swapper/307:11:233
154918399139,2cyclictest0-21swapper/208:55:152
154918399136,4cyclictest0-21swapper/208:04:542
1549183991311,1cyclictest0-21swapper/211:05:132
1549183991311,1cyclictest0-21swapper/209:05:102
1549183991311,1cyclictest0-21swapper/208:20:102
1549183991311,1cyclictest0-21swapper/207:55:022
1549183991310,2cyclictest0-21swapper/211:30:142
1549183991310,2cyclictest0-21swapper/207:15:032
1549183991310,1cyclictest0-21swapper/212:38:482
1549183991310,1cyclictest0-21swapper/210:58:152
1549182991310,2cyclictest1943376-21kthreadcore11:55:151
1549182991310,2cyclictest1628053-21kthreadcore08:15:151
154918199135,2cyclictest1157598rtkit-daemon08:15:100
154918199131,7cyclictest1548859-21/usr/sbin/munin07:10:220
154918199131,7cyclictest1548859-21/usr/sbin/munin07:10:220
154918199131,3cyclictest1309-21mta-sts-daemon07:20:440
1549181991310,2cyclictest1665225-21kthreadcore08:45:160
1549181991310,2cyclictest0-21swapper/007:10:020
154918199130,8cyclictest1645858-21cut08:30:130
3240591125,3phc2sys0-21swapper/309:00:013
3240591121,2phc2sys0-21swapper/307:44:533
3240591120,2phc2sys0-21swapper/312:03:483
3240591120,2phc2sys0-21swapper/311:03:433
3240591120,2phc2sys0-21swapper/310:33:073
3240591120,2phc2sys0-21swapper/310:22:033
3240591120,2phc2sys0-21swapper/308:34:533
3240591120,2phc2sys0-21swapper/307:39:563
3240591120,1phc2sys0-21swapper/310:03:003
154918399129,1cyclictest0-21swapper/207:45:152
1549183991210,1cyclictest0-21swapper/212:05:152
154918299129,2cyclictest0-21swapper/107:10:021
154918199129,2cyclictest1307-21mta-sts-daemon07:15:510
154918199125,2cyclictest0-21swapper/007:35:030
3240591112,2phc2sys0-21swapper/312:20:433
3240591112,2phc2sys0-21swapper/309:20:103
3240591110,3phc2sys0-21swapper/308:45:193
3240591110,2phc2sys0-21swapper/312:30:053
3240591110,2phc2sys0-21swapper/311:50:373
3240591110,2phc2sys0-21swapper/308:15:023
3240591110,2phc2sys0-21swapper/307:57:103
3240591110,1phc2sys0-21swapper/312:10:413
3240591110,1phc2sys0-21swapper/308:35:543
3240591110,1phc2sys0-21swapper/307:29:023
3240591101,3phc2sys0-21swapper/312:19:593
3240591101,3phc2sys0-21swapper/310:14:523
3240591100,4phc2sys0-21swapper/311:05:193
3240591100,2phc2sys0-21swapper/312:27:243
3240591100,2phc2sys0-21swapper/311:34:493
3240591100,2phc2sys0-21swapper/310:39:543
3240591100,2phc2sys0-21swapper/310:16:543
3240591100,2phc2sys0-21swapper/309:58:063
3240591100,2phc2sys0-21swapper/309:09:523
3240591100,2phc2sys0-21swapper/307:30:143
3240591100,1phc2sys0-21swapper/308:24:033
3240591100,1phc2sys0-21swapper/308:18:593
324059191,2phc2sys0-21swapper/309:15:053
324059190,2phc2sys0-21swapper/308:25:163
324059190,2phc2sys0-21swapper/308:00:153
324059190,2phc2sys0-21swapper/307:45:133
324059190,2phc2sys0-21swapper/307:15:033
324059181,2phc2sys0-21swapper/308:05:083
15491839986,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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