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2026-03-17 - 19:39
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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 highest latencies:
System rackeslot6.osadl.org (updated Tue Mar 17, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
210961499113101,10cyclictest2115862-21latency_hist07:30:021
21096119910698,5cyclictest1-21systemd08:10:010
21096149910393,7cyclictest266-21systemd-journal11:40:001
2109614999588,5cyclictest2191769-21kworker/u8:3+events_unbound11:30:221
2109614999487,5cyclictest2158910-21kworker/u8:1+flush-179:009:50:011
2109614998983,4cyclictest2128935-21kworker/u8:0+flush-179:008:15:251
2109611998878,7cyclictest2197896-21latency_hist11:45:010
2109614998578,5cyclictest2104957-21kworker/u8:0+flush-179:007:50:011
2109611998456,19cyclictest2189687-21latency_hist11:20:020
2109614998374,6cyclictest2181691-21kworker/u8:1+events_unbound11:05:241
2109614998274,6cyclictest2141114-21kworker/u8:0+events_unbound09:00:011
2109614997970,7cyclictest2194738-21kworker/u8:2+flush-179:011:55:011
2109614997669,4cyclictest2181748-21kworker/u8:2+flush-179:011:15:221
2109614997567,5cyclictest2181691-21kworker/u8:1+flush-179:010:55:251
2109611997551,15cyclictest2162620-21latency_hist09:55:010
2109614997469,4cyclictest2207737-21kworker/u8:3+events_unbound12:40:011
2109614997468,5cyclictest2181691-21kworker/u8:1+flush-179:011:50:011
2109614997467,5cyclictest2128935-21kworker/u8:0+flush-179:008:20:231
2109614997267,4cyclictest2161271-21kworker/u8:0+flush-179:010:00:231
2109614997264,6cyclictest2207689-21latency_hist12:15:011
2109614997263,6cyclictest2117685-21kworker/u8:2+flush-179:007:35:211
2109614997163,6cyclictest2181748-21kworker/u8:2+events_unbound11:20:231
2109614997163,6cyclictest2158910-21kworker/u8:1+events_unbound09:40:231
2109614996961,6cyclictest2207737-21kworker/u8:3+flush-179:012:25:001
2109614996954,11cyclictest266-21systemd-journal08:05:001
2109611996958,8cyclictest2133991-21apt-get08:25:130
2109614996758,6cyclictest2124411-21kworker/u8:2+events_unbound08:00:001
2109614996747,18cyclictest2177216-21kworker/u8:0+flush-179:010:50:001
2109611996761,4cyclictest2124411-21kworker/u8:2+events_unbound08:00:230
2109611996656,8cyclictest2156495-21/usr/sbin/munin09:35:230
2109611996653,10cyclictest2209840-21diskstats12:20:140
2109614996550,3cyclictest2181691-21kworker/u8:1+events_unbound11:40:261
2109614996550,13cyclictest2109735-21/usr/sbin/munin07:10:251
2109611996557,6cyclictest2146462-21latency_hist09:05:020
2109611996555,8cyclictest2175338-21kworker/u8:2+events_unbound10:45:010
2109611996555,7cyclictest266-21systemd-journal12:10:230
2109614996453,9cyclictest266-21systemd-journal10:14:591
2109614996453,9cyclictest266-21systemd-journal10:14:591
2109611996457,5cyclictest2143269-21latency_hist08:55:000
2109614996256,4cyclictest2202404-21kworker/u8:1+flush-179:012:25:231
2109614996255,5cyclictest2169018-21kworker/u8:3+flush-179:010:20:191
2109614996254,6cyclictest2181691-21kworker/u8:1+flush-179:010:55:011
2109611996255,5cyclictest2175338-21kworker/u8:2+events_unbound10:35:210
2109611996254,6cyclictest2117709-21latency_hist07:35:010
2109611996251,8cyclictest2193116-21latency_hist11:30:010
2109611996251,8cyclictest2193116-21latency_hist11:30:010
2109614996156,4cyclictest2128935-21kworker/u8:0+flush-179:008:34:551
2109614996053,5cyclictest2117685-21kworker/u8:2+flush-179:007:40:251
2109611996048,8cyclictest2112739-21kworker/u8:2+events_unbound07:25:010
2109614995953,4cyclictest2141114-21kworker/u8:0+flush-179:009:29:561
2109614995952,5cyclictest2130585-21kworker/u8:1+flush-179:008:30:001
2109611995948,7cyclictest2202404-21kworker/u8:1+flush-179:012:00:240
2109614995853,4cyclictest2163656-21kworker/u8:2+flush-179:010:00:001
2109614995852,4cyclictest2124430-21kworker/u8:3+flush-179:008:10:151
210961199581,19cyclictest2214075-21perf12:35:000
2109614995752,4cyclictest2204240-21kworker/u8:2+flush-179:012:05:221
2109614995751,4cyclictest2108017-21kworker/u8:3+flush-179:007:20:211
2109614995749,6cyclictest2169018-21kworker/u8:3+flush-179:010:30:001
2109611995746,9cyclictest2181748-21kworker/u8:2+flush-179:011:00:010
2109614995651,3cyclictest2169018-21kworker/u8:3+flush-179:010:15:171
2109614995650,4cyclictest2108017-21kworker/u8:3+flush-179:007:15:201
2109614995647,6cyclictest2141114-21kworker/u8:0+events_unbound08:50:181
2109611995649,6cyclictest2181748-21kworker/u8:2+flush-179:011:20:210
2109611995649,5cyclictest2181691-21kworker/u8:1+events_unbound11:15:000
210961199560,53cyclictest1-21systemd10:24:220
2109611995545,8cyclictest2119298-21cp07:36:220
2109614995447,4cyclictest2154649-21kworker/u8:2+flush-179:009:35:101
2109611995446,6cyclictest2207737-21kworker/u8:3+flush-179:012:20:010
2109611995446,6cyclictest2207737-21kworker/u8:3+flush-179:012:20:010
2109611995443,9cyclictest2129210-21apt-get08:10:130
2109614995348,4cyclictest2181748-21kworker/u8:2+flush-179:011:10:231
2109614995347,4cyclictest2121041-21kworker/u8:1+events_unbound07:50:171
2109614995346,6cyclictest2141114-21kworker/u8:0+flush-179:008:49:591
2109614995246,4cyclictest2148027-21kworker/u8:1+events_unbound09:10:141
2109611995242,8cyclictest266-21systemd-journal08:59:560
2109614995145,4cyclictest2161271-21kworker/u8:0+flush-179:009:50:211
2109611995144,6cyclictest2141114-21kworker/u8:0+flush-179:009:25:020
2109615995047,2cyclictest0-21swapper/209:37:582
2109614995044,5cyclictest2144921-21kworker/u8:3+flush-179:009:09:561
2109614995044,4cyclictest2148027-21kworker/u8:1+flush-179:009:15:211
2109611995044,5cyclictest2141114-21kworker/u8:0+flush-179:009:20:010
210961199502,44cyclictest2124433-21apt-get07:55:130
4577091490,13ptp4l441ktimers/307:10:003
2109618994942,5cyclictest2180147-21turbostat10:50:003
2109614994944,4cyclictest2200145-21kworker/u8:0+flush-179:011:55:211
2109614994944,4cyclictest2133780-21kworker/u8:3+flush-179:008:40:211
2109614994940,6cyclictest2166850-21kworker/u8:1+flush-179:010:40:011
2109614994938,9cyclictest266-21systemd-journal08:10:011
2109611994937,9cyclictest2115872-21apt-get07:30:010
2109614994844,3cyclictest2164272-21kworker/u8:3+flush-179:010:05:211
2109614994843,4cyclictest2211120-21kworker/u8:0+flush-179:012:34:591
2109614994841,5cyclictest2200145-21kworker/u8:0+flush-179:012:00:121
2109611994842,4cyclictest2204240-21kworker/u8:2+events_unbound12:10:020
2109611994839,6cyclictest2148027-21kworker/u8:1+flush-179:009:10:000
2109618994745,1cyclictest0-21swapper/309:14:593
2109611994737,7cyclictest266-21systemd-journal11:57:230
2109614994639,6cyclictest2202404-21kworker/u8:1+flush-179:012:15:191
2109614994639,6cyclictest2202404-21kworker/u8:1+flush-179:012:15:191
2109611994629,15cyclictest714-21Xorg10:26:590
210961199461,43cyclictest714-21Xorg08:18:000
2109614994540,4cyclictest2181691-21kworker/u8:1+flush-179:011:29:551
2109614994540,4cyclictest2181691-21kworker/u8:1+flush-179:011:29:551
2109614994540,4cyclictest2128935-21kworker/u8:0+flush-179:008:35:201
2109614994540,4cyclictest2128935-21kworker/u8:0+flush-179:008:35:201
2109611994535,8cyclictest2141684-21latency_hist08:50:010
2109614994438,5cyclictest2181691-21kworker/u8:1+flush-179:011:00:201
2109611994439,4cyclictest2154649-21kworker/u8:2+flush-179:009:30:240
2109611994437,5cyclictest2122606-21ls07:50:000
2109611994433,8cyclictest2164482-21apt-get10:00:090
2109611994336,6cyclictest2174815-21kworker/u8:0+events_unbound10:30:230
210961899420,40cyclictest2132137-21turbostat08:20:003
210961599420,40cyclictest0-21swapper/208:18:002
2109611994238,2cyclictest0-21swapper/011:07:590
2109611994237,3cyclictest2169021-21systemd-run10:15:010
2109611994237,3cyclictest2169021-21systemd-run10:15:000
2109611994234,6cyclictest2138515-21latency_hist08:40:020
2109611994234,6cyclictest2138515-21latency_hist08:40:010
2109611994233,7cyclictest2163656-21kworker/u8:2+flush-179:009:55:270
2109614994135,5cyclictest2141114-21kworker/u8:0+events_unbound09:05:001
2109614994133,7cyclictest2111804-21kworker/u8:1+flush-179:007:30:211
2109611994135,4cyclictest2158989-21proc_pri09:40:220
210961199411,3cyclictest714-21Xorg09:48:580
210961199411,38cyclictest2112701-21munin-run07:20:000
2109618994035,4cyclictest2136920-21turbostat08:35:013
210961899400,4cyclictest2175364-21turbostat10:35:003
210961899400,39cyclictest0-21swapper/311:47:593
2109615994037,2cyclictest0-21swapper/211:08:002
210961599400,36cyclictest0-21swapper/207:25:592
2109611994032,6cyclictest2181748-21kworker/u8:2+events_unbound11:05:000
2109611994022,15cyclictest0-21swapper/010:50:120
210961199400,39cyclictest0-21swapper/009:11:590
210961199400,38cyclictest714-21Xorg07:11:590
2109618993933,5cyclictest2215651-21turbostat12:40:003
210961899390,4cyclictest2168999-21turbostat10:15:003
210961899390,4cyclictest2168999-21turbostat10:14:593
210961899390,37cyclictest2159457-21turbostat09:45:003
2109611993924,13cyclictest2200570-21phc2sys11:50:220
2109618993831,5cyclictest2130551-21turbostat08:15:013
2109615993834,2cyclictest0-21swapper/209:29:562
210961599380,36cyclictest0-21swapper/211:00:582
210961599380,36cyclictest0-21swapper/207:11:592
210961599380,35cyclictest0-21swapper/209:41:002
2109614993836,1cyclictest2141114-21kworker/u8:0+events_unbound09:20:181
2109611993833,4cyclictest2132137-21turbostat08:24:550
2109618993735,1cyclictest0-21swapper/307:38:593
210961199372,33cyclictest2194959-21apt-get11:35:120
210961199370,35cyclictest1-21systemd07:55:010
2109618993634,1cyclictest0-21swapper/308:20:583
2109618993631,4cyclictest2194711-21turbostat11:35:013
2109618993629,5cyclictest2162627-21turbostat09:55:003
210961899360,35cyclictest0-21swapper/311:20:593
2109615993633,2cyclictest0-21swapper/212:02:592
2109615993633,2cyclictest0-21swapper/210:31:592
2109615993633,2cyclictest0-21swapper/208:24:552
2109615993632,2cyclictest0-21swapper/211:42:582
2109615993632,2cyclictest0-21swapper/209:23:592
2109615993628,6cyclictest0-21swapper/210:26:592
210961599360,1cyclictest0-21swapper/212:14:552
2109611993635,1cyclictest0-21swapper/009:29:550
2109611993632,3cyclictest2180131-21munin-run10:50:000
2109611993627,6cyclictest2166850-21kworker/u8:1+flush-179:010:05:210
210961199360,24cyclictest2194416-21switchtime11:30:230
2109618993530,4cyclictest2156264-21turbostat09:35:003
2109615993532,2cyclictest0-21swapper/210:59:552
2109615993531,2cyclictest0-21swapper/211:16:592
210961599350,2cyclictest0-21swapper/207:30:142
210961599350,1cyclictest0-21swapper/212:19:592
210961599350,1cyclictest0-21swapper/212:19:592
210961599350,1cyclictest0-21swapper/209:08:592
210961599350,1cyclictest0-21swapper/208:59:552
2109614993532,2cyclictest0-21swapper/109:32:591
2109618993428,5cyclictest2165819-21turbostat10:05:003
2109618993428,5cyclictest2157871-21turbostat09:40:013
2109615993431,2cyclictest0-21swapper/211:39:562
2109615993425,7cyclictest0-21swapper/209:01:002
2109615993425,7cyclictest0-21swapper/207:48:002
2109614993429,4cyclictest2175338-21kworker/u8:2+flush-179:010:40:191
2109614993428,4cyclictest1-21systemd10:35:001
2109618993328,4cyclictest2117712-21turbostat07:35:003
2109615993330,2cyclictest0-21swapper/210:44:542
4577091320,6ptp4l61490irq/134-eno1-TxRx-008:30:013
2109618993229,2cyclictest0-21swapper/310:27:003
2109615993229,2cyclictest0-21swapper/207:17:592
2109615993228,2cyclictest0-21swapper/212:29:552
2109611993222,8cyclictest2119658-21/usr/sbin/munin07:40:230
2109611993218,13cyclictest0-21swapper/008:40:230
2109618993125,5cyclictest2138522-21turbostat08:40:013
2109618993125,5cyclictest2138522-21turbostat08:40:003
2109618993125,5cyclictest2125769-21turbostat08:00:003
2109615993125,4cyclictest0-21swapper/210:51:592
210961599310,2cyclictest0-21swapper/207:36:592
210961599310,29cyclictest0-21swapper/209:45:142
210961599310,1cyclictest0-21swapper/211:59:592
210961199312,26cyclictest714-21Xorg12:26:590
4577091300,7ptp4l441ktimers/310:39:593
210961899300,28cyclictest0-21swapper/312:10:033
2109615993025,4cyclictest0-21swapper/207:55:132
2109611993026,3cyclictest2215642-21cron12:40:000
4577091290,7ptp4l61490irq/134-eno1-TxRx-012:35:003
2109618992927,1cyclictest2202665-21turbostat12:00:003
2109618992927,1cyclictest0-21swapper/311:09:543
2109618992927,1cyclictest0-21swapper/311:00:133
2109618992927,1cyclictest0-21swapper/309:49:583
2109618992926,2cyclictest0-21swapper/312:00:593
210961899290,28cyclictest0-21swapper/309:20:133
210961899290,28cyclictest0-21swapper/308:55:163
210961899290,27cyclictest0-21swapper/308:50:103
2109615992927,1cyclictest0-21swapper/210:50:002
2109615992925,2cyclictest0-21swapper/211:10:592
210961599290,28cyclictest0-21swapper/212:30:132
210961599290,27cyclictest0-21swapper/208:05:122
210961599290,21cyclictest0-21swapper/208:00:132
210961199292,24cyclictest714-21Xorg11:45:590
2109611992911,16cyclictest0-21swapper/010:15:160
4577091280,7ptp4l441ktimers/310:10:003
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:20:013
4577091280,6ptp4l441ktimers/310:45:013
4577091280,5ptp4l441ktimers/311:55:013
2109618992826,1cyclictest0-21swapper/312:05:143
2109618992826,1cyclictest0-21swapper/311:18:003
2109618992826,1cyclictest0-21swapper/309:15:033
2109618992826,1cyclictest0-21swapper/307:45:133
2109618992822,4cyclictest2154680-21turbostat09:29:593
210961899280,27cyclictest0-21swapper/312:20:113
210961899280,27cyclictest0-21swapper/311:25:143
210961899280,27cyclictest0-21swapper/311:25:143
210961899280,26cyclictest0-21swapper/311:40:143
210961899280,26cyclictest0-21swapper/308:45:143
210961899280,26cyclictest0-21swapper/308:40:133
210961899280,26cyclictest0-21swapper/308:05:123
210961899280,26cyclictest0-21swapper/307:40:133
2109615992825,2cyclictest0-21swapper/212:20:112
2109615992825,2cyclictest0-21swapper/210:15:002
2109615992825,2cyclictest0-21swapper/210:14:592
2109615992825,2cyclictest0-21swapper/210:05:122
2109615992825,2cyclictest0-21swapper/210:02:592
2109615992825,2cyclictest0-21swapper/209:34:542
2109615992825,2cyclictest0-21swapper/207:20:132
210961599280,26cyclictest0-21swapper/208:10:142
2109611992810,16cyclictest0-21swapper/008:30:160
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:00:003
4577091270,6ptp4l441ktimers/312:30:013
4577091270,6ptp4l441ktimers/310:54:563
4577091270,6ptp4l441ktimers/310:20:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-009:09:553
4577091270,5ptp4l441ktimers/310:24:563
2109618992721,4cyclictest2124184-21turbostat07:55:013
210961899270,26cyclictest0-21swapper/308:01:593
210961899270,26cyclictest0-21swapper/307:21:003
210961899270,26cyclictest0-21swapper/307:14:593
2109615992719,6cyclictest0-21swapper/211:23:592
4577091260,4ptp4l441ktimers/311:14:553
2109618992624,1cyclictest0-21swapper/309:03:593
2109618992621,4cyclictest2164223-21turbostat10:00:003
2109615992623,2cyclictest0-21swapper/212:36:592
210961599260,24cyclictest0-21swapper/211:52:592
210961599260,24cyclictest0-21swapper/210:19:582
4577091250,4ptp4l441ktimers/311:39:553
4577091250,2ptp4l441ktimers/307:29:563
2109615992522,2cyclictest0-21swapper/211:46:592
2109615992522,2cyclictest0-21swapper/210:35:592
2109615992522,2cyclictest0-21swapper/209:55:142
2109615992522,2cyclictest0-21swapper/208:48:592
2109615992522,2cyclictest0-21swapper/207:54:592
210961599250,2cyclictest0-21swapper/211:29:552
210961599250,2cyclictest0-21swapper/211:29:552
210961899240,1cyclictest0-21swapper/312:19:553
210961899240,1cyclictest0-21swapper/312:19:553
2109615992421,2cyclictest0-21swapper/212:09:552
2109615992420,2cyclictest0-21swapper/209:14:542
210961199240,21cyclictest2109623-21grep07:10:020
2109615992320,2cyclictest0-21swapper/209:53:592
2109615992320,2cyclictest0-21swapper/209:16:592
2109615992320,2cyclictest0-21swapper/208:29:542
2109615992219,2cyclictest0-21swapper/207:44:552
2109615992117,2cyclictest0-21swapper/208:32:002
2109614991510,4cyclictest2109701-21latency_hist07:10:021
210961599140,2cyclictest0-21swapper/208:55:012
210961599130,2cyclictest0-21swapper/211:35:002
210961599130,2cyclictest0-21swapper/208:45:002
210961599130,1cyclictest0-21swapper/210:25:002
210961599110,1cyclictest0-21swapper/208:40:012
210961599110,1cyclictest0-21swapper/208:40:002
21096159980,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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