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2026-08-11 - 06:30
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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 Tue Aug 11, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66993999145136,7cyclictest765666-21latency_hist00:05:021
66993999145134,9cyclictest773905-21apt-get00:30:041
66993999145134,8cyclictest741198-21latency_hist22:50:011
66993999144134,7cyclictest723414-21latency_hist21:55:011
66993799142135,5cyclictest772328-21kworker/u8:3+events_unbound00:30:010
66993799141125,13cyclictest699014-21latency_hist20:40:010
66993799139131,6cyclictest712237-21kworker/u8:0+events_unbound21:30:280
66993799134121,10cyclictest701366-21kworker/u8:3+flush-179:021:15:000
66993799133128,4cyclictest679432-21kworker/u8:1+events_unbound20:00:010
66993799133123,8cyclictest722063-21kworker/u8:1+flush-179:023:10:000
66993799131124,5cyclictest701366-21kworker/u8:3+events_unbound20:50:010
66993799131113,8cyclictest764060-21kworker/u8:1+events_unbound00:20:010
66993799130112,7cyclictest701366-21kworker/u8:3+flush-179:021:05:150
66993799127118,7cyclictest24004-21kworker/u8:3+flush-179:019:10:140
66993799126118,5cyclictest24004-21kworker/u8:3+events_unbound19:30:010
66993999124118,4cyclictest764060-21kworker/u8:1+flush-179:000:00:011
66993799124116,6cyclictest764060-21kworker/u8:1+events_unbound00:00:000
66993799122112,7cyclictest718690-21kworker/u8:2+events_unbound21:55:130
66993799121110,8cyclictest695864-21kworker/u8:0+flush-179:020:40:190
66993799120114,4cyclictest679432-21kworker/u8:1+flush-179:019:45:010
66993799120113,5cyclictest753243-21kworker/u8:0+flush-179:023:45:260
66993999118108,6cyclictest729761-21kworker/u8:0+flush-179:022:20:141
66993799118113,3cyclictest767747-21kworker/u8:0+events_unbound00:25:000
66993999117108,7cyclictest736187-21http22:35:011
66993799117110,5cyclictest701366-21kworker/u8:3+flush-179:021:00:000
66993799115107,6cyclictest722063-21kworker/u8:1+flush-179:023:20:010
66993799114105,6cyclictest722063-21kworker/u8:1+flush-179:022:00:150
66993799114101,9cyclictest671459-21kworker/u8:0+flush-179:019:30:160
66993999113102,9cyclictest752865-21apt-get23:25:121
66993799113105,5cyclictest24004-21kworker/u8:3+events_unbound19:45:230
66993999112100,9cyclictest717045-21latency_hist21:35:011
66993799111104,4cyclictest710121-21kworker/u8:1+flush-179:021:15:270
6699399911099,8cyclictest1213033-21systemd-journal21:50:011
66993799110102,6cyclictest718687-21kworker/u8:0+events_unbound21:40:240
66993999109101,5cyclictest671415-21latency_hist19:15:011
6699379910899,7cyclictest732419-21kworker/u8:3+events_unbound22:35:230
6699379910899,7cyclictest732419-21kworker/u8:3+events_unbound22:35:220
6699379910899,7cyclictest24004-21kworker/u8:3+flush-179:019:40:000
6699379910897,9cyclictest722063-21kworker/u8:1+flush-179:022:05:200
6699379910896,8cyclictest688580-21kworker/u8:2+events_unbound20:25:120
6699379910891,5cyclictest722063-21kworker/u8:1+events_unbound23:00:150
6699379910795,8cyclictest722063-21kworker/u8:1+events_unbound23:20:160
6699379910795,8cyclictest722063-21kworker/u8:1+events_unbound23:20:150
6699379910698,5cyclictest722063-21kworker/u8:1+events_unbound23:35:150
6699379910695,8cyclictest764065-21kworker/u8:3+flush-179:000:00:270
6699379910694,9cyclictest1213033-21systemd-journal23:45:000
6699399910596,6cyclictest747567-21latency_hist23:10:001
6699379910596,7cyclictest679432-21kworker/u8:1+events_unbound20:15:160
6699379910595,6cyclictest767747-21kworker/u8:0+flush-179:000:35:220
6699399910496,5cyclictest682570-21latency_hist19:50:011
6699379910494,7cyclictest722063-21kworker/u8:1+events_unbound23:10:220
6699379910396,5cyclictest671459-21kworker/u8:0+flush-179:019:20:000
6699379910395,5cyclictest701366-21kworker/u8:3+events_unbound21:00:130
6699379910392,8cyclictest722063-21kworker/u8:1+events_unbound22:50:260
6699379910290,6cyclictest686260-21kworker/u8:0+events_unbound20:00:140
6699379910191,7cyclictest684156-21latency_hist19:55:010
6699379910091,6cyclictest722063-21kworker/u8:1+flush-179:022:10:190
6699379910090,7cyclictest753243-21kworker/u8:0+flush-179:023:50:200
669939999987,9cyclictest1213033-21systemd-journal22:20:001
669939999887,8cyclictest734574-21latency_hist22:30:011
669937999786,8cyclictest688580-21kworker/u8:2+flush-179:020:10:140
669937999689,4cyclictest732419-21kworker/u8:3+events_unbound22:25:130
669937999688,5cyclictest688580-21kworker/u8:2+flush-179:020:05:210
669937999590,3cyclictest701366-21kworker/u8:3+flush-179:020:50:260
669937999586,6cyclictest688580-21kworker/u8:2+events_unbound20:20:180
669937999584,4cyclictest772328-21kworker/u8:3+flush-179:000:30:150
669937999581,11cyclictest730036-21apt-get22:15:120
669939999485,7cyclictest709322-21/usr/sbin/munin21:10:171
669937999483,8cyclictest755786-21latency_hist23:35:010
669937999387,4cyclictest729761-21kworker/u8:0+flush-179:022:20:170
669937999387,4cyclictest24004-21kworker/u8:3+events_unbound19:20:260
669937999385,5cyclictest712237-21kworker/u8:0+events_unbound21:20:230
669939999285,4cyclictest673282-21apt-get19:20:131
669939999181,8cyclictest1213033-21systemd-journal21:30:011
669937999083,4cyclictest722063-21kworker/u8:1+events_unbound22:55:130
669937998979,7cyclictest764060-21kworker/u8:1+flush-179:000:10:200
669937998880,6cyclictest732419-21kworker/u8:3+events_unbound22:45:210
669937998877,8cyclictest692698-21kworker/u8:3+events_unbound20:30:200
669937998875,10cyclictest767252-21latency_hist00:10:020
669937998875,10cyclictest767252-21latency_hist00:10:010
669939998776,8cyclictest756022-21/usr/sbin/munin23:35:151
669939998676,7cyclictest736166-21apt-get22:35:021
669939998676,7cyclictest736166-21apt-get22:35:011
669937998680,4cyclictest718687-21kworker/u8:0+events_unbound21:45:150
669937998680,4cyclictest712237-21kworker/u8:0+events_unbound21:25:230
669939998575,8cyclictest677790-21latency_hist19:35:001
669939998575,7cyclictest739612-21latency_hist22:45:011
669937998477,5cyclictest722063-21kworker/u8:1+flush-179:022:40:220
669937998477,5cyclictest717037-21kworker/u8:3+events_unbound21:35:230
669937998378,3cyclictest732419-21kworker/u8:3+flush-179:022:30:160
669937998275,4cyclictest722063-21kworker/u8:1+events_unbound21:50:150
669939997767,8cyclictest722063-21kworker/u8:1+flush-179:022:00:001
669939997767,7cyclictest718640-21latency_hist21:40:011
669939997566,7cyclictest699015-21apt-get20:40:001
669939997564,9cyclictest718690-21kworker/u8:2+events_unbound21:45:011
669939997465,7cyclictest688580-21kworker/u8:2+events_unbound20:05:261
669939997366,6cyclictest688580-21kworker/u8:2+flush-179:020:30:001
669939997362,8cyclictest680984-21latency_hist19:45:011
669939997161,8cyclictest722063-21kworker/u8:1+flush-179:023:20:181
669939997161,8cyclictest722063-21kworker/u8:1+flush-179:023:20:171
669939997059,9cyclictest775989-21apt-get00:35:121
669937997065,4cyclictest722063-21kworker/u8:1+flush-179:023:25:260
669939996857,9cyclictest24004-21kworker/u8:3+flush-179:019:35:231
669939996655,9cyclictest710121-21kworker/u8:1+flush-179:021:25:001
669939996559,3cyclictest679432-21kworker/u8:1+events_unbound20:00:241
669939996452,8cyclictest698983-21kworker/u8:1+events_unbound20:45:021
669943996259,2cyclictest0-21swapper/220:05:592
669939996255,5cyclictest726610-21latency_hist22:05:011
669939995946,10cyclictest764060-21kworker/u8:1+flush-179:000:10:231
669939995747,8cyclictest722063-21kworker/u8:1+flush-179:023:10:211
669939995652,3cyclictest714-21Xorg00:16:591
669939995652,3cyclictest714-21Xorg00:08:591
669939995652,3cyclictest714-21Xorg00:08:591
669939995648,6cyclictest669794-21kworker/u8:1+flush-179:019:15:261
669939995447,5cyclictest760822-21apt-get23:50:111
669939995444,8cyclictest691043-21latency_hist20:15:011
669939995342,8cyclictest24004-21kworker/u8:3+flush-179:019:55:161
669939995140,9cyclictest767747-21kworker/u8:0+flush-179:000:25:001
669939995043,6cyclictest732419-21kworker/u8:3+flush-179:023:00:221
669939995043,5cyclictest691298-21apt-get20:15:131
669939995040,7cyclictest722063-21kworker/u8:1+flush-179:022:10:151
669939995039,8cyclictest753243-21kworker/u8:0+flush-179:023:45:161
669939994938,9cyclictest753243-21kworker/u8:0+flush-179:023:40:241
4577091490,13ptp4l441ktimers/319:10:013
669943994845,2cyclictest0-21swapper/223:23:592
669943994845,2cyclictest0-21swapper/223:23:592
669939994839,7cyclictest1213033-21systemd-journal22:52:351
669939994742,4cyclictest692698-21kworker/u8:3+events_unbound20:30:231
669939994741,5cyclictest722063-21kworker/u8:1+flush-179:023:00:011
669939994636,7cyclictest510-21rs:main1
669939994441,2cyclictest722063-21kworker/u8:1+flush-179:023:30:211
669939994437,5cyclictest749128-21kworker/u8:0+flush-179:023:15:241
669939994431,11cyclictest767747-21kworker/u8:0+flush-179:000:25:151
669939994336,5cyclictest698983-21kworker/u8:1+flush-179:020:50:141
669939994335,6cyclictest693196-21diskstats20:20:151
66994499410,40cyclictest754208-21turbostat23:29:593
669944994034,5cyclictest736165-21turbostat22:35:013
669944994034,5cyclictest705905-21turbostat21:00:003
66993999401,2cyclictest714-21Xorg19:55:001
66994399390,36cyclictest0-21swapper/220:59:592
669944993835,2cyclictest0-21swapper/300:13:583
669943993836,1cyclictest0-21swapper/219:40:002
66994399380,35cyclictest0-21swapper/223:34:592
669939993830,5cyclictest0-21swapper/120:41:001
669944993734,2cyclictest0-21swapper/319:28:003
669943993734,2cyclictest0-21swapper/223:39:552
669943993733,2cyclictest0-21swapper/221:52:592
66994399370,35cyclictest0-21swapper/223:13:592
66994399370,35cyclictest0-21swapper/200:19:592
66994399370,34cyclictest0-21swapper/219:20:012
66994399370,34cyclictest0-21swapper/219:15:012
669939993734,2cyclictest0-21swapper/119:26:591
669944993634,1cyclictest0-21swapper/323:14:583
66994499360,35cyclictest0-21swapper/322:23:593
669943993633,2cyclictest0-21swapper/220:25:002
669939993628,6cyclictest707737-21/usr/sbin/munin21:05:181
669944993533,1cyclictest0-21swapper/323:34:553
669944993533,1cyclictest0-21swapper/300:09:003
669944993533,1cyclictest0-21swapper/300:08:593
66994499350,28cyclictest0-21swapper/323:15:153
66994399350,1cyclictest0-21swapper/200:05:002
669944993432,1cyclictest0-21swapper/320:09:593
66994499340,27cyclictest0-21swapper/320:35:133
669943993432,1cyclictest0-21swapper/222:55:012
669943993431,2cyclictest0-21swapper/200:36:002
669939993430,3cyclictest714-21Xorg21:03:591
4577191340,2getstats0-21swapper/319:35:263
4577091340,3ptp4l61490irq/134-eno1-TxRx-000:15:153
669944993327,5cyclictest725048-21sleep22:00:003
669944993326,6cyclictest0-21swapper/321:45:143
66994499330,26cyclictest0-21swapper/323:00:133
669943993331,1cyclictest0-21swapper/220:49:592
669943993330,2cyclictest0-21swapper/222:18:592
669943993330,2cyclictest0-21swapper/221:00:592
669943993330,2cyclictest0-21swapper/200:06:002
669943993330,2cyclictest0-21swapper/200:05:592
669944993230,1cyclictest0-21swapper/320:50:593
669944993230,1cyclictest0-21swapper/319:31:583
669944993225,6cyclictest0-21swapper/321:20:153
66994499320,28cyclictest0-21swapper/323:05:143
66994499320,26cyclictest0-21swapper/320:30:133
669943993229,2cyclictest0-21swapper/219:28:582
66993999329,12cyclictest714-21Xorg21:17:591
669944993129,1cyclictest0-21swapper/300:36:003
669944993125,5cyclictest0-21swapper/320:45:033
669943993129,1cyclictest0-21swapper/220:37:002
669943993129,1cyclictest0-21swapper/220:20:002
4577091310,9ptp4l441ktimers/323:49:563
669944993028,1cyclictest0-21swapper/300:30:593
669943993028,1cyclictest0-21swapper/223:50:002
669943993028,1cyclictest0-21swapper/223:19:592
669943993028,1cyclictest0-21swapper/222:10:002
669943993028,1cyclictest0-21swapper/221:25:002
669943993028,1cyclictest0-21swapper/220:44:592
4577091300,6ptp4l441ktimers/321:15:013
4577091300,5ptp4l441ktimers/320:19:553
669944992927,1cyclictest0-21swapper/322:15:133
669944992927,1cyclictest0-21swapper/320:05:013
669944992926,2cyclictest0-21swapper/320:10:123
66994499290,28cyclictest0-21swapper/322:35:033
66994499290,28cyclictest0-21swapper/322:35:033
66994499290,28cyclictest0-21swapper/320:40:133
66994499290,27cyclictest0-21swapper/323:35:133
66994499290,1cyclictest0-21swapper/322:50:153
669943992926,2cyclictest0-21swapper/223:25:122
669943992926,2cyclictest0-21swapper/222:55:132
669943992926,2cyclictest0-21swapper/222:10:132
669943992926,2cyclictest0-21swapper/221:55:112
669943992926,2cyclictest0-21swapper/221:25:112
66994399290,2cyclictest0-21swapper/221:35:142
66994399290,28cyclictest0-21swapper/200:30:132
66994399290,27cyclictest0-21swapper/223:55:032
66994399290,27cyclictest0-21swapper/222:40:132
66994399290,27cyclictest0-21swapper/222:25:132
66994399290,27cyclictest0-21swapper/221:45:142
66994399290,27cyclictest0-21swapper/221:30:152
66994399290,27cyclictest0-21swapper/220:25:112
66994399290,27cyclictest0-21swapper/219:52:592
66994399290,27cyclictest0-21swapper/219:20:142
4577091290,7ptp4l441ktimers/323:55:003
4577091290,7ptp4l441ktimers/321:45:013
4577091290,7ptp4l441ktimers/300:25:003
4577091290,6ptp4l61490irq/134-eno1-TxRx-022:05:003
4577091290,6ptp4l441ktimers/323:00:003
4577091290,6ptp4l441ktimers/322:15:003
669944992826,1cyclictest0-21swapper/320:25:593
66994499280,27cyclictest0-21swapper/323:40:123
66994499280,27cyclictest0-21swapper/319:50:133
66994499280,26cyclictest0-21swapper/323:55:013
66994499280,26cyclictest0-21swapper/319:55:133
669943992826,1cyclictest0-21swapper/223:45:012
669943992825,2cyclictest0-21swapper/222:45:152
669943992825,2cyclictest0-21swapper/222:38:592
669943992825,2cyclictest0-21swapper/222:38:592
669943992825,2cyclictest0-21swapper/221:10:132
669943992825,2cyclictest0-21swapper/220:15:002
66994399280,27cyclictest0-21swapper/219:55:012
66994399280,26cyclictest0-21swapper/222:03:002
66994399280,26cyclictest0-21swapper/200:30:022
66994399280,26cyclictest0-21swapper/200:10:032
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:05:013
4577091280,6ptp4l61490irq/134-eno1-TxRx-000:30:003
4577091280,6ptp4l441ktimers/322:44:563
4577091280,6ptp4l441ktimers/321:55:003
4577091280,6ptp4l441ktimers/321:35:003
4577091280,6ptp4l441ktimers/321:29:563
4577091280,6ptp4l441ktimers/320:24:553
4577091280,6ptp4l441ktimers/319:45:013
4577091280,5ptp4l441ktimers/321:40:003
669944992725,1cyclictest0-21swapper/300:03:593
669944992724,2cyclictest0-21swapper/322:06:593
669944992724,2cyclictest0-21swapper/319:45:583
669943992724,2cyclictest0-21swapper/223:54:002
669943992724,2cyclictest0-21swapper/222:23:592
669943992724,2cyclictest0-21swapper/200:24:002
66994399270,25cyclictest0-21swapper/219:32:592
66994399270,24cyclictest0-21swapper/222:34:592
669939992721,4cyclictest698983-21kworker/u8:1+flush-179:021:00:011
4577091270,5ptp4l61490irq/134-eno1-TxRx-023:24:563
4577091270,5ptp4l61490irq/134-eno1-TxRx-023:24:553
4577091270,5ptp4l61490irq/134-eno1-TxRx-019:14:553
669944992625,1cyclictest0-21swapper/322:28:583
669944992623,2cyclictest0-21swapper/321:13:593
66994399260,2cyclictest0-21swapper/219:46:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-021:09:553
4577091260,5ptp4l61490irq/134-eno1-TxRx-019:24:553
4577091260,5ptp4l441ktimers/322:50:013
669943992522,2cyclictest0-21swapper/223:08:592
669943992522,2cyclictest0-21swapper/221:43:582
669943992522,2cyclictest0-21swapper/221:06:592
66994399250,24cyclictest0-21swapper/223:03:592
669944992421,2cyclictest0-21swapper/319:18:593
669943992422,1cyclictest0-21swapper/219:44:582
669943992219,2cyclictest0-21swapper/221:18:592
669943992219,2cyclictest0-21swapper/220:34:552
669939992112,7cyclictest669801-21latency_hist19:10:011
669937992015,4cyclictest0-21swapper/019:10:020
669943991916,2cyclictest0-21swapper/220:01:592
669943991310,2cyclictest0-21swapper/220:50:592
6699439930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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