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2026-05-06 - 23:08
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Wed May 06, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1956189999585,7cyclictest2031667-21kworker/u8:2+flush-179:011:00:230
1956189999283,6cyclictest2030666-21latency_hist11:00:000
1956193999180,8cyclictest2050057-21latency_hist12:00:021
1956189999180,7cyclictest2008117-21latency_hist09:50:010
1956193998880,5cyclictest2031667-21kworker/u8:2+flush-179:012:25:001
1956189998475,6cyclictest2016329-21latency_hist10:15:010
1956193998376,5cyclictest1960920-21kworker/u8:3+flush-179:008:05:001
1956189998368,10cyclictest2040253-21kworker/u8:3+flush-179:011:40:000
1956193998276,4cyclictest2025885-21kworker/u8:1+flush-179:010:55:241
1956193998175,4cyclictest2031667-21kworker/u8:2+flush-179:012:00:161
1956189998172,6cyclictest2019534-21latency_hist10:25:020
1956193998074,4cyclictest1983952-21kworker/u8:1+flush-179:008:35:241
1956193998071,6cyclictest1988787-21kworker/u8:3+flush-179:009:00:241
1956193997872,4cyclictest2025885-21kworker/u8:1+flush-179:011:35:181
1956193997872,4cyclictest2016568-21kworker/u8:1+flush-179:010:25:141
1956193997868,7cyclictest1969161-21kworker/u8:2+flush-179:007:55:161
1956193997866,9cyclictest2013397-21/usr/sbin/munin10:05:221
1956189997763,12cyclictest1213033-21systemd-journal07:53:170
1956189997666,7cyclictest2013160-21latency_hist10:05:020
1956193997569,4cyclictest2025885-21kworker/u8:1+events_unbound11:25:221
1956193997569,4cyclictest2024277-21kworker/u8:0+flush-179:010:50:151
1956193997569,4cyclictest2003318-21kworker/u8:3+flush-179:009:35:001
1956193997560,11cyclictest2008126-21apt-get09:50:001
1956189997566,6cyclictest1977340-21latency_hist08:15:010
1956193997466,6cyclictest2009963-21latency_hist09:55:011
1956189997466,5cyclictest1-21systemd10:35:000
1956193997367,4cyclictest2001730-21kworker/u8:0+flush-179:009:35:141
1956193997367,4cyclictest2001730-21kworker/u8:0+flush-179:009:35:141
1956193997366,5cyclictest1993583-21kworker/u8:2+flush-179:009:20:001
1956189997362,9cyclictest2010504-21diskstats09:55:150
1956193997265,5cyclictest1958742-21kworker/u8:1+events_unbound07:25:121
1956193997263,7cyclictest1977326-21kworker/u8:2+flush-179:008:25:201
1956193997157,13cyclictest2011527-21kworker/u8:0+flush-179:010:00:141
1956189997159,10cyclictest1993583-21kworker/u8:2+flush-179:009:45:000
1956193997058,9cyclictest2024277-21kworker/u8:0+flush-179:010:45:011
1956193997057,10cyclictest1213033-21systemd-journal10:15:001
1956193996962,5cyclictest2016568-21kworker/u8:1+flush-179:010:19:591
1956193996862,4cyclictest2016568-21kworker/u8:1+flush-179:010:30:221
1956193996862,4cyclictest1988244-21kworker/u8:1+flush-179:008:55:241
1956193996860,6cyclictest2048668-21kworker/u8:1+flush-179:012:05:191
1956193996859,7cyclictest1960863-21kworker/u8:2+flush-179:007:34:551
1956193996761,4cyclictest2031667-21kworker/u8:2+flush-179:011:00:221
1956193996757,8cyclictest1213033-21systemd-journal07:23:461
1956189996757,8cyclictest2045254-21apt-get11:45:120
1956189996756,9cyclictest1974421-21apt-get08:05:100
1956193996560,3cyclictest1986115-21kworker/u8:2+flush-179:008:50:141
1956193996558,5cyclictest2053250-21kworker/u8:3+flush-179:012:20:001
1956189996554,9cyclictest1994077-21diskstats09:05:150
1956193996459,4cyclictest2008144-21kworker/u8:3+flush-179:009:55:261
1956193996456,6cyclictest1983971-21latency_hist08:35:011
1956189996451,10cyclictest1213033-21systemd-journal08:50:000
1956189996451,10cyclictest1213033-21systemd-journal08:50:000
1956193996357,5cyclictest1960920-21kworker/u8:3+flush-179:007:40:241
1956193996357,4cyclictest1988244-21kworker/u8:1+flush-179:009:25:211
1956193996350,5cyclictest1977326-21kworker/u8:2+events_unbound08:20:011
1956193996156,3cyclictest1951543-21kworker/u8:0+flush-179:007:10:141
1956193996054,4cyclictest2025885-21kworker/u8:1+flush-179:011:30:151
1956193996053,5cyclictest1977326-21kworker/u8:2+events_unbound08:20:251
1956193996053,5cyclictest1977326-21kworker/u8:2+events_unbound08:20:251
1956193996053,4cyclictest2025885-21kworker/u8:1+flush-179:011:15:201
1956193996052,6cyclictest2061173-21latency_hist12:35:021
1956193995954,4cyclictest2031667-21kworker/u8:2+flush-179:011:50:241
1956193995953,4cyclictest1960920-21kworker/u8:3+flush-179:008:05:201
1956189995951,5cyclictest1986115-21kworker/u8:2+flush-179:008:40:240
195618999590,42cyclictest0-21swapper/009:35:010
1956189995852,4cyclictest1988787-21kworker/u8:3+flush-179:009:05:010
1956189995849,6cyclictest510-21rs:main0
1956193995749,5cyclictest1960920-21kworker/u8:3+flush-179:008:10:191
1956193995650,4cyclictest1958742-21kworker/u8:1+flush-179:007:35:151
1956189995653,2cyclictest0-21swapper/010:51:590
1956189995647,6cyclictest2031667-21kworker/u8:2+flush-179:011:40:160
1956189995645,9cyclictest1979205-21apt-get08:20:110
1956189995645,9cyclictest1979205-21apt-get08:20:110
1956189995629,17cyclictest2040226-21turbostat11:34:540
195618999560,2cyclictest0-21swapper/011:51:590
1956193995550,4cyclictest1992183-21kworker/u8:0+flush-179:009:10:251
1956193995550,4cyclictest1992183-21kworker/u8:0+flush-179:009:10:251
1956189995447,5cyclictest2025885-21kworker/u8:1+flush-179:010:48:510
1956193995346,5cyclictest2059585-21latency_hist12:30:011
1956193995247,4cyclictest1960920-21kworker/u8:3+flush-179:007:49:551
1956193995245,5cyclictest2011527-21kworker/u8:0+events_unbound10:20:171
1956193995245,5cyclictest1993583-21kworker/u8:2+events_unbound09:20:231
1956193995245,5cyclictest1213033-21systemd-journal07:16:451
1956189995144,5cyclictest2059570-21kworker/u8:1+events_unbound12:40:010
1956189995142,7cyclictest1213033-21systemd-journal10:09:440
1956198995048,1cyclictest0-21swapper/312:17:583
1956193995041,7cyclictest1213033-21systemd-journal11:47:441
1956189995045,4cyclictest1958742-21kworker/u8:1+flush-179:007:25:260
1956189995028,13cyclictest1213033-21systemd-journal11:18:540
1956195994946,2cyclictest0-21swapper/211:33:592
1956193994943,4cyclictest2035436-21latency_hist11:15:011
1956189994940,7cyclictest1213033-21systemd-journal10:43:440
195618999490,21cyclictest1966160-21date07:40:010
4577091480,13ptp4l61490irq/134-eno1-TxRx-007:10:013
1956198994846,1cyclictest0-21swapper/311:33:593
1956193994843,4cyclictest2024277-21kworker/u8:0+flush-179:010:45:251
1956193994842,5cyclictest2024277-21kworker/u8:0+events_unbound11:05:241
1956189994842,4cyclictest2001730-21kworker/u8:0+flush-179:009:35:220
1956189994842,4cyclictest2001730-21kworker/u8:0+flush-179:009:35:210
1956189994840,6cyclictest2001751-21latency_hist09:30:010
1956189994840,6cyclictest1960885-21latency_hist07:25:010
1956193994742,4cyclictest1993583-21kworker/u8:2+events_unbound09:40:131
1956189994726,19cyclictest1967794-21apt-get07:45:130
1956193994638,6cyclictest1983952-21kworker/u8:1+events_unbound08:40:141
1956189994639,5cyclictest2025885-21kworker/u8:1+events_unbound11:10:140
1956189994637,6cyclictest1969161-21kworker/u8:2+flush-179:008:00:060
1956195994541,2cyclictest0-21swapper/210:02:002
1956193994538,5cyclictest2031667-21kworker/u8:2+events_unbound11:40:141
1956189994538,5cyclictest2059570-21kworker/u8:1+flush-179:012:30:000
195618999440,28cyclictest0-21swapper/011:25:120
1956193994338,4cyclictest2031667-21kworker/u8:2+flush-179:012:15:011
1956193994337,5cyclictest2059570-21kworker/u8:1+flush-179:012:35:211
1956193994336,5cyclictest1995121-21latency_hist09:10:011
1956189994336,5cyclictest1977326-21kworker/u8:2+events_unbound08:25:150
195618999430,2cyclictest2050040-21turbostat12:04:560
1956198994240,1cyclictest0-21swapper/310:02:003
1956195994238,2cyclictest0-21swapper/210:16:592
1956193994237,3cyclictest2031667-21kworker/u8:2+flush-179:011:20:061
1956189994236,5cyclictest1969104-21kworker/u8:1+flush-179:007:55:230
1956189994236,4cyclictest1951607-21kworker/u8:3+flush-179:007:10:230
1956189994235,6cyclictest1992183-21kworker/u8:0+flush-179:009:10:240
1956189994235,6cyclictest1992183-21kworker/u8:0+flush-179:009:10:240
1956189994226,14cyclictest2051883-21apt-get12:05:120
195618999421,37cyclictest1957942-21apt-get07:15:140
1956198994138,2cyclictest0-21swapper/310:16:593
195618999411,38cyclictest1213033-21systemd-journal07:34:590
195619899400,38cyclictest2059599-21turbostat12:30:003
195619899400,38cyclictest0-21swapper/307:23:583
195619599400,37cyclictest0-21swapper/210:49:552
195619599400,36cyclictest0-21swapper/209:11:592
195619599400,36cyclictest0-21swapper/209:11:592
195619599400,2cyclictest0-21swapper/211:44:552
195619399401,38cyclictest714-21Xorg10:35:581
1956189994035,3cyclictest2054811-21apt12:14:590
1956189994033,5cyclictest1978958-21sendmail08:20:000
1956189994030,8cyclictest2011527-21kworker/u8:0+flush-179:010:20:010
195618999400,4cyclictest714-21Xorg10:25:580
195618999400,38cyclictest2024318-21cut10:40:000
195619899390,37cyclictest0-21swapper/310:34:563
195619599390,36cyclictest0-21swapper/207:36:002
1956193993929,8cyclictest1969382-21apt-get07:50:111
1956189993935,3cyclictest2031667-21kworker/u8:2+flush-179:012:15:260
1956189993919,17cyclictest0-21swapper/012:30:120
1956198993832,5cyclictest1993550-21turbostat09:05:003
195619899380,1cyclictest0-21swapper/309:09:553
1956195993834,2cyclictest0-21swapper/209:59:592
195619599380,36cyclictest0-21swapper/210:12:592
195619599380,35cyclictest0-21swapper/210:34:552
195619599380,35cyclictest0-21swapper/208:29:562
195619599380,35cyclictest0-21swapper/207:23:582
1956189993834,2cyclictest714-21Xorg08:56:590
1956189993829,7cyclictest2031667-21kworker/u8:2+flush-179:011:21:120
195619899370,1cyclictest0-21swapper/309:11:593
195619899370,1cyclictest0-21swapper/309:11:593
1956195993734,2cyclictest0-21swapper/211:22:592
1956195993733,2cyclictest0-21swapper/208:19:592
1956198993634,1cyclictest0-21swapper/311:22:593
1956198993634,1cyclictest0-21swapper/310:00:003
1956198993634,1cyclictest0-21swapper/308:19:593
195619899360,35cyclictest0-21swapper/310:13:003
195619899360,29cyclictest0-21swapper/307:35:593
1956195993632,3cyclictest0-21swapper/209:50:592
195619599360,2cyclictest0-21swapper/209:09:552
1956198993533,1cyclictest0-21swapper/308:42:593
1956195993532,2cyclictest0-21swapper/208:43:002
1956195993532,2cyclictest0-21swapper/207:26:592
1956195993531,2cyclictest0-21swapper/212:11:592
1956189993532,2cyclictest714-21Xorg08:53:590
1956189993531,3cyclictest2050078-21systemd-run12:00:000
1956189993527,5cyclictest0-21swapper/009:50:580
1956198993432,1cyclictest0-21swapper/308:14:593
1956195993432,1cyclictest0-21swapper/209:05:002
1956195993432,1cyclictest0-21swapper/208:15:002
1956195993430,2cyclictest0-21swapper/208:58:592
1956189993430,3cyclictest2058014-21dump-pmu-power12:25:010
1956189993429,3cyclictest2000171-21munin-run09:25:000
1956189993427,5cyclictest1213033-21systemd-journal11:08:540
4577091330,2ptp4l61490irq/134-eno1-TxRx-008:30:123
1956198993331,1cyclictest0-21swapper/309:50:583
1956198993331,1cyclictest0-21swapper/307:26:593
1956198993330,2cyclictest0-21swapper/309:36:593
1956198993330,2cyclictest0-21swapper/309:36:583
195619899330,32cyclictest0-21swapper/311:49:593
1956195993330,2cyclictest0-21swapper/209:36:592
1956195993330,2cyclictest0-21swapper/209:36:592
1956195993329,2cyclictest0-21swapper/207:58:592
195619599330,31cyclictest0-21swapper/211:49:582
195619599330,2cyclictest0-21swapper/211:00:592
1956193993328,4cyclictest1986115-21kworker/u8:2+events_unbound08:49:471
1956193993328,4cyclictest1986115-21kworker/u8:2+events_unbound08:49:471
1956198993230,1cyclictest0-21swapper/312:11:593
1956198993230,1cyclictest0-21swapper/311:54:593
1956198993230,1cyclictest0-21swapper/308:58:593
1956198993230,1cyclictest0-21swapper/307:13:003
1956198993228,2cyclictest0-21swapper/307:58:593
1956195993229,2cyclictest0-21swapper/207:12:592
1956189993218,12cyclictest1964400-21cpuspeed_turbos07:35:120
1956198993128,2cyclictest0-21swapper/308:49:593
1956198993128,2cyclictest0-21swapper/308:49:593
1956195993129,1cyclictest0-21swapper/211:55:002
195619599310,29cyclictest0-21swapper/208:35:132
4577091300,7ptp4l441ktimers/310:55:003
4577091300,7ptp4l441ktimers/310:09:593
4577091300,4ptp4l61490irq/134-eno1-TxRx-009:24:553
195619899300,29cyclictest0-21swapper/309:20:013
195619899300,29cyclictest0-21swapper/308:35:133
1956195993027,2cyclictest0-21swapper/210:50:122
1956195993027,2cyclictest0-21swapper/208:49:592
1956195993027,2cyclictest0-21swapper/208:49:592
1956195993026,2cyclictest0-21swapper/210:21:592
195619599300,28cyclictest0-21swapper/211:55:122
195619599300,28cyclictest0-21swapper/211:05:112
195619599300,28cyclictest0-21swapper/209:20:012
1956189993026,3cyclictest1998420-21cmp09:20:000
195618999302,26cyclictest0-21swapper/008:36:590
4577091290,7ptp4l441ktimers/311:30:013
4577091290,6ptp4l441ktimers/310:44:553
1956198992927,1cyclictest0-21swapper/308:51:593
1956198992926,2cyclictest0-21swapper/310:21:593
195619899290,2cyclictest0-21swapper/310:25:093
195619899290,2cyclictest0-21swapper/307:40:013
195619899290,28cyclictest0-21swapper/310:55:123
195619899290,27cyclictest1972310-21turbostat08:04:553
195619899290,27cyclictest0-21swapper/311:55:123
195619899290,1cyclictest0-21swapper/311:00:113
1956195992926,2cyclictest0-21swapper/211:18:592
1956195992926,2cyclictest0-21swapper/211:10:132
1956195992926,2cyclictest0-21swapper/209:25:122
1956195992926,2cyclictest0-21swapper/208:51:592
1956195992926,2cyclictest0-21swapper/208:24:592
1956195992926,2cyclictest0-21swapper/208:24:592
1956195992926,2cyclictest0-21swapper/207:40:122
1956195992925,2cyclictest0-21swapper/211:37:002
195619599290,2cyclictest0-21swapper/210:25:102
195619599290,28cyclictest0-21swapper/208:30:022
195619599290,27cyclictest0-21swapper/212:15:132
195619599290,27cyclictest0-21swapper/211:28:592
195619599290,25cyclictest0-21swapper/208:04:552
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:35:013
4577091280,6ptp4l441ktimers/310:40:013
4577091280,6ptp4l441ktimers/309:44:563
4577091280,6ptp4l441ktimers/308:24:553
4577091280,6ptp4l441ktimers/308:24:553
4577091280,6ptp4l441ktimers/307:50:013
1956198992826,1cyclictest0-21swapper/311:18:583
1956198992826,1cyclictest0-21swapper/309:25:133
1956198992825,2cyclictest0-21swapper/311:44:593
1956198992825,2cyclictest0-21swapper/311:10:133
195619899280,26cyclictest0-21swapper/311:05:123
195619899280,1cyclictest0-21swapper/312:05:123
1956195992825,2cyclictest0-21swapper/212:05:132
1956195992825,2cyclictest0-21swapper/209:20:012
195619599280,2cyclictest0-21swapper/210:55:122
4577091270,6ptp4l61490irq/134-eno1-TxRx-012:25:013
4577091270,6ptp4l441ktimers/312:40:003
4577091270,6ptp4l441ktimers/308:30:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-012:05:013
4577091270,5ptp4l441ktimers/311:40:003
4577091270,5ptp4l441ktimers/310:50:003
1956198992722,4cyclictest1975761-21turbostat08:10:013
195619599270,18cyclictest0-21swapper/210:44:552
4577091260,5ptp4l61490irq/134-eno1-TxRx-007:55:013
231999260,13rtkit-daemon1955672-21/usr/sbin/munin07:05:301
1956195992623,2cyclictest0-21swapper/212:21:592
1956195992623,2cyclictest0-21swapper/209:40:122
4577091250,5ptp4l441ktimers/312:35:003
4577091250,4ptp4l441ktimers/309:35:013
4577091250,4ptp4l441ktimers/307:19:553
1956195992522,2cyclictest0-21swapper/208:10:002
1956195992521,2cyclictest0-21swapper/210:05:592
1956195992421,2cyclictest0-21swapper/207:15:152
195618999245,16cyclictest1956315-21cat07:10:020
1956195992320,2cyclictest0-21swapper/212:00:132
1956195992320,2cyclictest0-21swapper/207:45:592
1956195992118,2cyclictest0-21swapper/212:26:002
45782912018,1phc2sys0-21swapper/309:45:133
1956195991816,1cyclictest0-21swapper/212:39:592
1956195991815,2cyclictest0-21swapper/210:35:592
1956195991814,2cyclictest2061175-21turbostat12:35:002
195619599107,2cyclictest0-21swapper/207:51:592
19561959985,2cyclictest0-21swapper/209:30:132
19561959981,5cyclictest1962480-21turbostat07:34:552
19561959960,5cyclictest0-21swapper/209:45:232
19561959930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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