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2026-08-02 - 06:56
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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 100 highest latencies:
System rack0slot2.osadl.org (updated Sun Aug 02, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120272925746,8sleep40-21swapper/419:08:144
120264825722,30sleep70-21swapper/719:07:047
1203065994341,2cyclictest1440051-21kworker/u16:1+flush-8:021:09:155
120269224231,8sleep50-21swapper/519:07:435
1203073994136,4cyclictest1488497-21latency_hist21:28:467
13959892390,0sleep71395990-21grep20:44:067
1203065993735,2cyclictest1485649-21kworker/u16:3+flush-8:021:28:585
1203065993634,2cyclictest1884244-21kworker/u16:4+flush-8:000:09:115
1203073993431,2cyclictest125-21kswapd000:07:277
1203065993432,2cyclictest1618382-21kworker/u16:1+events_unbound23:08:595
1203065993331,2cyclictest1618382-21kworker/u16:1+flush-8:022:34:025
120260023323,7sleep60-21swapper/619:06:236
1203065993230,2cyclictest1511728-21kworker/u16:1+flush-8:021:44:025
1203065993129,2cyclictest1884244-21kworker/u16:4+flush-8:000:34:035
1203073993024,5cyclictest1362512-21latency_hist20:28:467
1203065993028,2cyclictest1755545-21kworker/u16:0+flush-8:023:23:595
1203073992922,6cyclictest1633529-21latency_hist22:28:457
1203065992927,2cyclictest1183337-21kworker/u16:0+flush-8:019:54:005
1203065992826,2cyclictest1557920-21kworker/u16:4+flush-8:022:09:015
1203065992624,2cyclictest1304074-21kworker/u16:2+flush-8:020:04:015
1203065992624,2cyclictest1129118-21kworker/u16:2+events_unbound19:24:005
1203065992623,2cyclictest1618382-21kworker/u16:1+flush-8:022:53:525
1203073992520,4cyclictest1536801-21latency_hist21:48:457
1203073992518,6cyclictest1294471-21latency_hist19:53:467
1203069992422,2cyclictest1352672-21kworker/u16:3+flush-8:020:29:116
1203065992422,2cyclictest1742643-21kworker/u16:2+events_unbound23:14:095
1203065992422,2cyclictest1618382-21kworker/u16:1+flush-8:022:24:105
1203065992422,2cyclictest1618382-21kworker/u16:1+flush-8:022:19:135
1203065992422,2cyclictest1284659-21kworker/u16:1+flush-8:020:29:015
1203065992422,2cyclictest1202767-21kworker/u16:3+flush-8:019:13:515
1203065992321,2cyclictest1823966-21kworker/u16:0+events_unbound00:04:055
1203073992217,4cyclictest1323639-21latency_hist20:08:467
1203065992220,2cyclictest1884244-21kworker/u16:4+flush-8:000:22:475
1203065992220,2cyclictest1823966-21kworker/u16:0+flush-8:023:59:115
1203065992220,2cyclictest1618382-21kworker/u16:1+events_unbound23:04:155
1203065992220,2cyclictest1304074-21kworker/u16:2+flush-8:021:22:035
1203065992119,2cyclictest1823966-21kworker/u16:0+events_unbound23:44:155
1203065992119,2cyclictest1618382-21kworker/u16:1+flush-8:023:03:415
1203065992119,2cyclictest1557920-21kworker/u16:4+flush-8:021:58:415
1203065992119,2cyclictest1372190-21kworker/u16:0+events_unbound21:14:005
1203065992119,2cyclictest1183337-21kworker/u16:0+events_unbound19:34:045
1203065992118,2cyclictest1557920-21kworker/u16:4+flush-8:021:58:515
1203060992117,1cyclictest0-21swapper/400:34:144
1203065992018,2cyclictest1884244-21kworker/u16:4+flush-8:000:29:115
1203065992018,2cyclictest1884244-21kworker/u16:4+flush-8:000:29:115
1203065992018,2cyclictest1836917-21kworker/u16:1+flush-8:023:58:405
1203065992018,2cyclictest1631241-21kworker/u16:0+flush-8:022:29:015
1203065992018,2cyclictest1631241-21kworker/u16:0+flush-8:022:29:015
1203065992018,2cyclictest1557920-21kworker/u16:4+flush-8:022:04:165
1203065992018,2cyclictest1525117-21kworker/u16:2+events_unbound22:14:195
1203065992018,2cyclictest1372190-21kworker/u16:0+events_unbound20:44:165
1203073991914,4cyclictest0-21swapper/722:58:467
1203065991917,2cyclictest1836917-21kworker/u16:1+flush-8:000:16:185
1203065991917,2cyclictest1655845-21kworker/u16:2+events_unbound22:44:025
1203065991916,2cyclictest1742643-21kworker/u16:2+events_unbound23:28:555
120307399180,16cyclictest0-21swapper/722:04:117
1203065991816,2cyclictest1823966-21kworker/u16:0+flush-8:023:50:115
1203065991816,2cyclictest1823966-21kworker/u16:0+flush-8:023:50:115
1203065991816,2cyclictest1742643-21kworker/u16:2+flush-8:023:34:095
1203065991816,2cyclictest1304074-21kworker/u16:2+events_unbound20:51:065
1203065991816,2cyclictest1284659-21kworker/u16:1+events_unbound20:59:135
1203065991816,2cyclictest1284659-21kworker/u16:1+events_unbound20:23:275
1203065991815,2cyclictest1681848-21kworker/u16:3+flush-8:022:48:555
1203073991713,3cyclictest1302-21snmpd19:54:187
1203065991715,2cyclictest1742643-21kworker/u16:2+flush-8:023:19:365
1203065991715,2cyclictest1657741-21kworker/u16:4+events_unbound23:39:045
1203065991715,2cyclictest1618382-21kworker/u16:1+flush-8:022:39:015
1203065991715,2cyclictest1304074-21kworker/u16:2+flush-8:021:24:145
1203065991715,2cyclictest1304074-21kworker/u16:2+flush-8:021:04:085
1203065991715,2cyclictest1284659-21kworker/u16:1+events_unbound20:39:115
1203065991715,2cyclictest1183337-21kworker/u16:0+flush-8:019:09:165
1203065991715,2cyclictest1183337-21kworker/u16:0+events_unbound19:19:155
120307399169,6cyclictest1609361-21latency_hist22:18:467
120307399166,8cyclictest6530-21gmain23:53:437
120307399166,8cyclictest6530-21gmain23:53:437
1203073991611,4cyclictest1850901-21latency_hist23:58:457
120307399160,14cyclictest1776215-21ssh23:24:287
120307399160,14cyclictest1740059-21ssh23:09:357
120307399160,14cyclictest1558000-21ssh21:54:137
120307399160,14cyclictest0-21swapper/720:09:027
1203065991614,2cyclictest1485649-21kworker/u16:3+events_unbound21:49:265
1203065991614,2cyclictest1324024-21kworker/u16:3+events_unbound20:13:025
1203065991614,2cyclictest1265093-21kworker/u16:3+events_unbound19:46:155
1203065991613,2cyclictest1485649-21kworker/u16:3+flush-8:021:39:015
1203060991614,2cyclictest1557920-21kworker/u16:4+flush-8:021:54:454
120307399157,7cyclictest6050-21gmain23:08:237
1203073991512,2cyclictest0-21swapper/721:58:467
120307399150,7cyclictest1642388-21ssh22:29:097
120307399150,7cyclictest1642388-21ssh22:29:097
120307399150,3cyclictest1885453-21sh00:10:187
120307399150,14cyclictest0-21swapper/719:39:127
120307399150,13cyclictest0-21swapper/721:19:107
120307399150,13cyclictest0-21swapper/719:29:077
1203069991514,1cyclictest1421205-21cpuspeed20:58:566
120306999150,14cyclictest0-21swapper/623:59:126
1203065991513,2cyclictest1265093-21kworker/u16:3+events_unbound20:00:025
1203065991513,2cyclictest1183337-21kworker/u16:0+flush-8:019:48:575
120306099150,1cyclictest0-21swapper/420:44:124
120307399148,5cyclictest1381893-21latency_hist20:38:467
120307399148,5cyclictest1302-21snmpd23:48:097
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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