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2026-09-18 - 00:03
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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 rackeslot6.osadl.org (updated Thu Sep 17, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
186724599155126,26cyclictest1213033-21systemd-journal10:22:471
186724299152142,8cyclictest1895958-21gpgv08:40:000
186724299143133,7cyclictest1886271-21latency_hist08:10:000
1867242991410,136cyclictest1897750-21munin-run08:45:000
186724599140123,6cyclictest1871337-21kworker/u8:2+flush-179:007:45:231
186724599139129,8cyclictest1966172-21kworker/u8:3+events_unbound12:25:011
186724599133124,6cyclictest1881527-21kworker/u8:1+events_unbound09:10:241
186724599126115,8cyclictest1953405-21latency_hist11:35:011
186724599126115,8cyclictest1897675-21latency_hist08:45:021
186724599126108,16cyclictest1922526-21kworker/u8:1+flush-179:010:00:211
186724599125112,9cyclictest1885619-21kworker/u8:0+flush-179:008:25:201
186724599124116,6cyclictest1913876-21kworker/u8:2+events_unbound09:40:241
186724599123111,9cyclictest1873494-21kworker/u8:0+events_unbound07:50:191
18672459912196,17cyclictest1932397-21kworker/u8:1+events_unbound10:35:271
186724599121109,9cyclictest1962967-21latency_hist12:05:011
186724599120114,4cyclictest1904587-21kworker/u8:2+events_unbound09:20:231
186724599120103,5cyclictest1956633-21kworker/u8:3+events_unbound11:55:231
186724599119109,7cyclictest1956633-21kworker/u8:3+flush-179:011:55:011
186724599118108,6cyclictest1881527-21kworker/u8:1+flush-179:008:45:201
186724599118108,6cyclictest1881527-21kworker/u8:1+events_unbound09:35:221
186724599117108,6cyclictest1881527-21kworker/u8:1+events_unbound09:15:191
186724599117106,7cyclictest1964541-21kworker/u8:1+events_unbound12:15:001
186724599116112,3cyclictest1873494-21kworker/u8:0+flush-179:007:30:241
186724599116112,3cyclictest1873494-21kworker/u8:0+flush-179:007:30:241
186724599116111,3cyclictest1919330-21kworker/u8:0+flush-179:010:25:231
186724599115109,4cyclictest1954982-21kworker/u8:2+events_unbound11:40:241
186724599114105,6cyclictest1935592-21kworker/u8:2+events_unbound10:45:221
186724599114104,7cyclictest1902749-21latency_hist09:00:011
186724599114103,8cyclictest1961414-21kworker/u8:2+flush-179:012:30:211
186724299112105,5cyclictest1961414-21kworker/u8:2+flush-179:012:15:150
18672459911199,8cyclictest1923484-21kworker/u8:2+events_unbound10:05:201
18672459911196,6cyclictest1885619-21kworker/u8:0+events_unbound08:20:241
186724599111104,5cyclictest1885619-21kworker/u8:0+events_unbound08:05:241
18672459910996,10cyclictest1919210-21diskstats09:50:151
18672459910993,15cyclictest1919330-21kworker/u8:0+flush-179:011:45:251
18672459910799,5cyclictest1947073-21kworker/u8:3+events_unbound11:15:141
186724599107102,4cyclictest1919330-21kworker/u8:0+events_unbound11:35:221
18672459910699,5cyclictest1935592-21kworker/u8:2+events_unbound11:06:121
18672459910697,6cyclictest1865661-21kworker/u8:3+events_unbound07:10:171
186724599106101,4cyclictest1935592-21kworker/u8:2+events_unbound10:58:581
186724599106100,4cyclictest1935592-21kworker/u8:2+flush-179:011:00:211
18672459910590,6cyclictest1873494-21kworker/u8:0+flush-179:007:35:211
18672459910589,9cyclictest1961345-21kworker/u8:0+events_unbound12:05:221
18672459910494,7cyclictest1881527-21kworker/u8:1+events_unbound09:05:221
18672429910497,6cyclictest1885619-21kworker/u8:0+events_unbound08:25:120
18672459910398,4cyclictest1913876-21kworker/u8:2+flush-179:009:45:141
18672459910396,5cyclictest1935592-21kworker/u8:2+events_unbound11:20:131
18672459910396,4cyclictest1881527-21kworker/u8:1+events_unbound08:50:141
18672459910296,4cyclictest1932400-21kworker/u8:3+flush-179:010:30:251
18672459910296,4cyclictest1865613-21kworker/u8:1+flush-179:007:25:201
18672429910288,10cyclictest1970918-21latency_hist12:30:010
18672459910095,3cyclictest1871337-21kworker/u8:2+events_unbound07:20:241
18672429910092,6cyclictest1919330-21kworker/u8:0+flush-179:010:50:150
1867251999992,5cyclictest1966142-21turbostat12:15:003
1867245999994,4cyclictest1970953-21kworker/u8:1+flush-179:012:35:261
1867245999991,6cyclictest1889470-21latency_hist08:20:011
1867245999892,4cyclictest1885619-21kworker/u8:0+flush-179:008:10:221
1867242999886,10cyclictest1940864-21apt-get10:55:110
1867245999789,5cyclictest1873494-21kworker/u8:0+events_unbound07:40:141
1867245999689,5cyclictest1919330-21kworker/u8:0+events_unbound11:10:261
1867245999689,5cyclictest1919330-21kworker/u8:0+events_unbound11:10:261
1867245999687,6cyclictest1950268-21kworker/u8:1+events_unbound11:25:191
1867245999685,4cyclictest1865613-21kworker/u8:1+events_unbound07:15:231
1867245999589,4cyclictest1910752-21kworker/u8:3+flush-179:009:55:221
1867245999583,9cyclictest1937142-21latency_hist10:45:011
1867245999490,3cyclictest1919330-21kworker/u8:0+flush-179:010:50:271
1867245999486,5cyclictest1922526-21kworker/u8:1+events_unbound10:10:231
1867242999486,6cyclictest1919330-21kworker/u8:0+events_unbound10:30:010
1867242999482,9cyclictest1925034-21latency_hist10:10:010
1867242999381,10cyclictest1935812-21apt-get10:40:100
1867245999286,5cyclictest1881527-21kworker/u8:1+flush-179:009:00:261
1867242999282,8cyclictest1947073-21kworker/u8:3+flush-179:011:15:160
1867242999182,7cyclictest510-21rs:main0
1867242999081,7cyclictest1897733-21kworker/u8:3+flush-179:008:55:200
1867242999080,7cyclictest1945453-21latency_hist11:10:010
1867242998981,5cyclictest1883084-21latency_hist08:00:020
1867245998778,8cyclictest1881527-21kworker/u8:1+events_unbound09:30:151
1867242998776,9cyclictest1972760-21apt-get12:35:120
1867245998680,5cyclictest1878363-21kworker/u8:3+events_unbound07:55:171
1867245998674,9cyclictest1895818-21apt-get08:40:001
1867242998372,9cyclictest1925289-21apt-get10:10:120
1867245998275,5cyclictest1961414-21kworker/u8:2+flush-179:012:15:221
1867242998272,7cyclictest1887856-21latency_hist08:15:010
1867242998072,6cyclictest1881527-21kworker/u8:1+flush-179:009:05:000
1867242997971,6cyclictest1873494-21kworker/u8:0+flush-179:007:50:140
1867242997871,6cyclictest1887891-21kworker/u8:3+flush-179:008:20:010
1867242997766,5cyclictest1932400-21kworker/u8:3+flush-179:010:30:260
1867242997566,7cyclictest1910752-21kworker/u8:3+flush-179:009:55:010
1867242997565,8cyclictest1213033-21systemd-journal10:22:390
1867242997468,4cyclictest1935592-21kworker/u8:2+flush-179:010:45:170
1867242997464,7cyclictest1873494-21kworker/u8:0+flush-179:007:30:220
1867242997464,7cyclictest1873494-21kworker/u8:0+flush-179:007:30:210
1867242997369,2cyclictest1878363-21kworker/u8:3+events_unbound08:00:230
1867242997368,3cyclictest1881527-21kworker/u8:1+flush-179:009:30:100
1867242997367,4cyclictest1935592-21kworker/u8:2+flush-179:011:20:160
1867242997365,6cyclictest1871337-21kworker/u8:2+flush-179:007:20:240
1867242997364,7cyclictest1964541-21kworker/u8:1+flush-179:012:10:010
1867242997364,7cyclictest1922526-21kworker/u8:1+events_unbound10:15:250
1867242997266,4cyclictest1919330-21kworker/u8:0+events_unbound11:35:190
1867242997262,8cyclictest1865613-21kworker/u8:1+events_unbound07:25:150
1867242997260,10cyclictest1213033-21systemd-journal09:19:590
1867242997161,8cyclictest1213033-21systemd-journal09:50:000
1867245997062,5cyclictest1878363-21kworker/u8:3+flush-179:008:00:101
1867242997060,7cyclictest1881527-21kworker/u8:1+flush-179:009:10:130
1867242996759,6cyclictest1922526-21kworker/u8:1+events_unbound10:00:240
1867242996757,8cyclictest1213033-21systemd-journal11:00:180
1867245996654,10cyclictest1213033-21systemd-journal10:20:001
1867251996532,1cyclictest0-21swapper/311:41:593
1867245996560,3cyclictest1961414-21kworker/u8:2+events_unbound12:25:181
1867245996556,3cyclictest1910752-21kworker/u8:3+events_unbound09:25:171
1867242996556,7cyclictest1868148-21kworker/u8:2+flush-179:007:10:230
1867242996457,5cyclictest1897733-21kworker/u8:3+flush-179:008:45:160
1867242996456,6cyclictest1213033-21systemd-journal11:35:010
1867242996454,7cyclictest1213033-21systemd-journal08:21:400
1867242996450,11cyclictest1213033-21systemd-journal09:30:000
1867242996357,4cyclictest1919330-21kworker/u8:0+flush-179:011:45:210
1867251996260,1cyclictest0-21swapper/307:38:593
1867247996058,1cyclictest0-21swapper/212:04:592
1867247996056,2cyclictest0-21swapper/210:31:592
1867242995953,4cyclictest1213033-21systemd-journal12:31:130
1867242995949,7cyclictest1213033-21systemd-journal12:04:560
1867242995944,11cyclictest1919330-21kworker/u8:0+flush-179:011:10:210
1867242995944,11cyclictest1919330-21kworker/u8:0+flush-179:011:10:200
1867251995849,6cyclictest1942242-21turbostat11:00:003
1867242995850,5cyclictest1876730-21latency_hist07:40:000
1867242995752,4cyclictest1913876-21kworker/u8:2+flush-179:009:40:160
1867242995748,6cyclictest1901102-21apt-get08:50:390
1867242995747,7cyclictest1954454-21kworker/u8:1+events_unbound11:50:230
1867242995747,7cyclictest1868990-21apt-get07:15:110
1867242995649,5cyclictest1910752-21kworker/u8:3+flush-179:009:35:160
1867242995642,11cyclictest1881527-21kworker/u8:1+events_unbound08:30:140
1867251995553,1cyclictest0-21swapper/308:08:593
1867245995449,4cyclictest1885619-21kworker/u8:0+events_unbound08:30:211
1867251995250,1cyclictest0-21swapper/308:35:003
1867242995245,5cyclictest1876991-21apt-get07:40:090
1867242995037,9cyclictest1871337-21kworker/u8:2+flush-179:007:50:010
1867242994942,6cyclictest1910752-21kworker/u8:3+flush-179:009:55:160
4577091480,13ptp4l61490irq/134-eno1-TxRx-007:10:003
1867251994846,1cyclictest0-21swapper/310:20:593
1867242994840,6cyclictest1966145-21cut12:15:000
1867251994543,1cyclictest0-21swapper/311:37:593
1867251994341,1cyclictest0-21swapper/310:50:593
186724799430,41cyclictest0-21swapper/209:58:592
186724799420,39cyclictest0-21swapper/212:34:552
1867242994237,4cyclictest1910755-21systemd-run09:25:010
1867242994131,8cyclictest1881527-21kworker/u8:1+flush-179:009:05:220
1867251994034,5cyclictest1935550-21turbostat10:40:003
186724299401,3cyclictest0-21swapper/011:43:590
186725199390,1cyclictest0-21swapper/310:41:593
1867247993936,2cyclictest0-21swapper/210:26:592
186724799380,36cyclictest0-21swapper/208:08:002
1867242993826,9cyclictest1213033-21systemd-journal11:29:590
1867251993735,1cyclictest0-21swapper/310:27:593
1867251993734,2cyclictest0-21swapper/312:35:593
186725199370,36cyclictest0-21swapper/309:00:583
1867247993734,2cyclictest0-21swapper/207:57:582
4577091360,3ptp4l441ktimers/308:45:043
1867251993634,1cyclictest0-21swapper/309:46:593
1867251993634,1cyclictest0-21swapper/309:13:583
186725199360,35cyclictest0-21swapper/309:27:593
186725199360,29cyclictest0-21swapper/309:06:003
1867247993633,2cyclictest0-21swapper/210:20:002
186724799360,1cyclictest0-21swapper/212:39:542
1867242993631,4cyclictest1933963-21turbostat10:39:550
1867251993533,1cyclictest0-21swapper/308:25:593
1867251993533,1cyclictest0-21swapper/307:32:593
1867251993533,1cyclictest0-21swapper/307:32:593
186725199350,1cyclictest0-21swapper/312:33:593
1867242993523,7cyclictest0-21swapper/011:56:590
1867251993432,1cyclictest0-21swapper/308:21:593
1867247993431,2cyclictest0-21swapper/211:59:562
1867247993431,2cyclictest0-21swapper/211:32:592
1867247993431,2cyclictest0-21swapper/211:13:592
1867247993431,2cyclictest0-21swapper/211:13:592
4577091330,6ptp4l441ktimers/311:10:013
1867251993331,1cyclictest0-21swapper/310:03:593
1867251993331,1cyclictest0-21swapper/307:25:593
1867251993328,4cyclictest1958199-21turbostat11:50:003
1867247993330,2cyclictest0-21swapper/210:24:592
1867251993230,1cyclictest0-21swapper/308:00:593
1867251993129,1cyclictest0-21swapper/311:00:593
1867247993128,2cyclictest0-21swapper/210:40:592
1867247993128,2cyclictest0-21swapper/210:12:592
1867247993128,1cyclictest0-21swapper/211:40:012
4577091300,9ptp4l441ktimers/312:29:563
1867247993028,1cyclictest0-21swapper/210:10:002
1867247993028,1cyclictest0-21swapper/209:24:592
1867247993027,2cyclictest0-21swapper/212:29:592
1867247993027,2cyclictest0-21swapper/212:20:582
1867247993027,2cyclictest0-21swapper/209:42:592
1867247993027,2cyclictest0-21swapper/208:32:592
1867247993027,2cyclictest0-21swapper/207:25:112
186724799300,29cyclictest0-21swapper/209:05:132
186724799300,28cyclictest0-21swapper/208:10:132
186724799300,1cyclictest0-21swapper/207:24:002
4577091290,7ptp4l441ktimers/311:55:013
4577091290,7ptp4l441ktimers/309:20:003
4577091290,6ptp4l441ktimers/308:55:003
1867251992927,1cyclictest0-21swapper/307:40:113
186725199290,2cyclictest0-21swapper/307:50:103
186725199290,28cyclictest0-21swapper/307:45:133
186725199290,27cyclictest0-21swapper/308:55:123
186725199290,27cyclictest0-21swapper/308:15:143
1867247992927,1cyclictest0-21swapper/207:35:002
1867247992927,1cyclictest0-21swapper/207:34:592
1867247992926,2cyclictest0-21swapper/212:10:132
1867247992926,2cyclictest0-21swapper/209:30:112
1867247992926,2cyclictest0-21swapper/209:00:122
1867247992926,2cyclictest0-21swapper/208:58:002
1867247992926,2cyclictest0-21swapper/208:35:142
186724799290,28cyclictest0-21swapper/212:05:132
186724799290,27cyclictest0-21swapper/211:40:132
186724799290,27cyclictest0-21swapper/211:20:132
186724799290,27cyclictest0-21swapper/211:18:582
186724799290,27cyclictest0-21swapper/211:06:592
186724799290,27cyclictest0-21swapper/210:36:592
186724799290,27cyclictest0-21swapper/208:45:012
4577091280,6ptp4l441ktimers/307:25:003
1867251992826,1cyclictest0-21swapper/310:49:593
1867251992825,2cyclictest0-21swapper/310:30:133
1867251992825,2cyclictest0-21swapper/309:35:123
186725199280,2cyclictest0-21swapper/311:15:133
186725199280,2cyclictest0-21swapper/309:40:133
186725199280,27cyclictest0-21swapper/308:40:013
186725199280,27cyclictest0-21swapper/307:55:133
186725199280,26cyclictest0-21swapper/311:55:113
186725199280,26cyclictest0-21swapper/309:50:133
1867247992825,2cyclictest0-21swapper/212:15:142
1867247992825,2cyclictest0-21swapper/211:54:552
1867247992825,2cyclictest0-21swapper/208:20:152
1867247992825,2cyclictest0-21swapper/207:53:002
1867247992825,2cyclictest0-21swapper/207:44:542
1867247992825,2cyclictest0-21swapper/207:15:132
1867247992825,2cyclictest0-21swapper/207:11:582
1867247992824,2cyclictest0-21swapper/207:37:002
186724799280,2cyclictest0-21swapper/209:45:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-011:25:003
4577091270,6ptp4l441ktimers/310:10:003
4577091270,6ptp4l441ktimers/308:15:003
4577091270,5ptp4l441ktimers/309:25:013
1867251992725,1cyclictest0-21swapper/312:21:593
1867251992725,1cyclictest0-21swapper/311:29:583
1867251992725,1cyclictest0-21swapper/308:40:013
1867251992722,4cyclictest1868743-21turbostat07:15:003
1867247992724,2cyclictest0-21swapper/209:17:592
186724799270,1cyclictest0-21swapper/208:45:012
4577091260,6ptp4l61490irq/134-eno1-TxRx-012:19:543
4577091260,5ptp4l441ktimers/311:34:563
4577091260,5ptp4l441ktimers/311:15:013
4577091260,5ptp4l441ktimers/311:15:003
4577091260,5ptp4l441ktimers/310:20:003
4577091260,5ptp4l441ktimers/309:34:563
231999260,14rtkit-daemon1866466-21memory07:05:230
1867251992624,1cyclictest0-21swapper/307:15:593
186725199260,24cyclictest0-21swapper/309:55:593
1867247992623,2cyclictest0-21swapper/210:50:022
186724799260,24cyclictest0-21swapper/211:25:592
186724799260,24cyclictest0-21swapper/209:11:002
4577091250,4ptp4l441ktimers/310:14:553
1867251992523,1cyclictest0-21swapper/312:03:003
186725199250,24cyclictest0-21swapper/312:08:593
1867247992523,1cyclictest0-21swapper/208:29:582
1867247992522,2cyclictest0-21swapper/209:35:122
186724799250,2cyclictest0-21swapper/211:46:002
1867247992422,1cyclictest0-21swapper/210:04:592
1867247992421,2cyclictest0-21swapper/208:52:002
1867247992421,2cyclictest0-21swapper/208:17:582
1867247992219,2cyclictest0-21swapper/209:52:592
1867247992219,2cyclictest0-21swapper/207:49:552
1867247992119,1cyclictest0-21swapper/209:28:002
1867247992118,2cyclictest0-21swapper/211:04:592
1867247992017,2cyclictest0-21swapper/208:01:592
1867247991916,2cyclictest0-21swapper/210:57:592
1867245991813,4cyclictest0-21swapper/107:10:021
1867247991714,2cyclictest0-21swapper/210:50:022
18672479930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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