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2026-04-27 - 10:38
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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 Mon Apr 27, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8550709912693,17cyclictest890253-21latency_hist21:00:010
85507099119103,13cyclictest948414-21apt-get00:00:010
85507099114104,7cyclictest866115-21latency_hist19:45:010
855070999485,6cyclictest856548-21latency_hist19:15:010
855070999182,7cyclictest956923-21/usr/sbin/munin00:25:250
855070999182,7cyclictest956923-21/usr/sbin/munin00:25:250
855070999083,5cyclictest861366-21kworker/u8:3+events_unbound19:45:230
855072998576,7cyclictest945212-21kworker/u8:2+flush-179:000:04:001
855072998170,9cyclictest911305-21kworker/u8:2+flush-179:022:40:231
855072998069,9cyclictest930632-21apt-get23:05:121
855072998069,9cyclictest930632-21apt-get23:05:111
855070998072,6cyclictest883860-21kworker/u8:2+flush-179:021:00:220
855070998069,9cyclictest863174-21apt-get19:35:110
855072997868,7cyclictest870877-21latency_hist20:00:011
855070997770,4cyclictest956094-21kworker/u8:0+flush-179:000:20:210
855070997564,9cyclictest856802-21apt-get19:15:110
855072997463,8cyclictest883860-21kworker/u8:2+flush-179:021:00:001
855070997364,6cyclictest874314-21kworker/u8:0+flush-179:020:10:220
855070997265,4cyclictest911305-21kworker/u8:2+flush-179:022:50:180
855070997262,6cyclictest945212-21kworker/u8:2+flush-179:000:15:240
855070997166,4cyclictest941751-21kworker/u8:0+flush-179:023:44:550
855070997063,5cyclictest938637-21kworker/u8:1+flush-179:023:45:250
855070997063,5cyclictest867956-21apt-get19:50:120
855072996962,5cyclictest885515-21kworker/u8:3+events_unbound22:05:001
855072996958,9cyclictest917893-21apt-get22:25:121
855070996961,6cyclictest862920-21latency_hist19:35:000
855070996961,5cyclictest900042-21kworker/u8:1+events_unbound21:30:260
855072996861,5cyclictest931998-21kworker/u8:3+flush-179:023:15:001
855070996863,4cyclictest911305-21kworker/u8:2+flush-179:022:39:560
855070996862,4cyclictest904825-21kworker/u8:0+flush-179:021:45:210
855070996859,7cyclictest925593-21latency_hist22:50:010
855070996858,7cyclictest871034-21kworker/u8:2+events_unbound20:20:010
855070996856,10cyclictest893686-21apt-get21:10:110
855070996757,7cyclictest910343-21kworker/u8:0+flush-179:022:20:000
855072996657,7cyclictest869285-21latency_hist19:55:021
855072996656,6cyclictest885515-21kworker/u8:3+flush-179:022:00:001
855070996658,5cyclictest883860-21kworker/u8:2+events_unbound20:50:000
855070996657,6cyclictest928790-21kworker/u8:1+flush-179:023:10:140
4577091660,13ptp4l441ktimers/319:10:013
855072996455,7cyclictest945457-21/usr/sbin/munin23:50:171
855070996455,7cyclictest917615-21kworker/u8:1+flush-179:022:30:000
855070996357,5cyclictest883860-21kworker/u8:2+flush-179:020:55:010
855070996356,5cyclictest911305-21kworker/u8:2+flush-179:023:05:170
855070996356,5cyclictest911305-21kworker/u8:2+flush-179:023:05:160
855070996354,6cyclictest911305-21kworker/u8:2+flush-179:022:30:160
855070996352,8cyclictest911305-21kworker/u8:2+flush-179:022:55:210
855070996256,5cyclictest911305-21kworker/u8:2+flush-179:023:35:010
855070996256,3cyclictest956721-21kworker/u8:3+flush-179:000:30:220
855070996254,6cyclictest956721-21kworker/u8:3+flush-179:000:35:260
855072996153,5cyclictest911305-21kworker/u8:2+flush-179:023:30:011
855072996150,8cyclictest948403-21latency_hist00:00:011
855070996153,5cyclictest911305-21kworker/u8:2+flush-179:022:10:140
855070996150,9cyclictest908032-21apt-get21:54:320
855072996057,2cyclictest0-21swapper/121:44:591
855072996052,6cyclictest874327-21latency_hist20:10:011
855072996051,6cyclictest885515-21kworker/u8:3+events_unbound21:25:021
855072996051,6cyclictest885515-21kworker/u8:3+events_unbound21:25:011
855070996053,5cyclictest853764-21kworker/u8:0+events_unbound19:20:250
855070996048,8cyclictest885515-21kworker/u8:3+events_unbound21:25:210
855070995952,5cyclictest885515-21kworker/u8:3+flush-179:021:55:170
855070995945,12cyclictest870881-21apt-get20:00:000
855070995851,5cyclictest875899-21kworker/u8:1+flush-179:020:20:230
855070995850,5cyclictest885515-21kworker/u8:3+flush-179:021:05:200
855070995848,7cyclictest1213033-21systemd-journal00:07:420
855074995754,2cyclictest0-21swapper/221:26:592
855074995751,5cyclictest0-21swapper/223:55:592
855072995745,10cyclictest855218-21apt-get19:10:101
855070995749,5cyclictest883860-21kworker/u8:2+flush-179:020:40:230
855072995650,4cyclictest883860-21kworker/u8:2+flush-179:021:00:181
855072995648,6cyclictest931998-21kworker/u8:3+flush-179:023:20:241
855072995648,6cyclictest877779-21apt-get20:20:121
855072995546,7cyclictest861366-21kworker/u8:3+flush-179:019:40:001
855070995551,3cyclictest931998-21kworker/u8:3+flush-179:023:24:560
855070995551,3cyclictest931998-21kworker/u8:3+flush-179:023:15:220
855070995549,4cyclictest883860-21kworker/u8:2+events_unbound21:40:230
855072995444,8cyclictest905084-21/usr/sbin/munin21:45:231
855070995445,6cyclictest941751-21kworker/u8:0+flush-179:023:40:010
855072995345,6cyclictest853764-21kworker/u8:0+flush-179:019:20:201
855070995348,4cyclictest948476-21kworker/u8:4+events_unbound00:04:000
855070995347,4cyclictest938637-21kworker/u8:1+flush-179:023:50:210
855070995247,4cyclictest853764-21kworker/u8:0+flush-179:019:25:240
855070995247,4cyclictest853764-21kworker/u8:0+flush-179:019:25:240
855070995241,8cyclictest898228-21apt-get21:25:010
855070995241,8cyclictest898228-21apt-get21:25:000
855070995143,7cyclictest911305-21kworker/u8:2+flush-179:022:20:200
855070995038,4cyclictest871034-21kworker/u8:2+flush-179:020:30:250
855078994946,2cyclictest0-21swapper/321:45:003
855072994939,7cyclictest908072-21latency_hist21:55:011
855072994938,9cyclictest861587-21apt-get19:30:131
855072994937,9cyclictest875899-21kworker/u8:1+flush-179:020:15:211
855070994944,4cyclictest861317-21kworker/u8:1+events_unbound20:00:230
855072994841,5cyclictest917639-21latency_hist22:25:011
855072994839,7cyclictest928790-21kworker/u8:1+flush-179:023:05:011
855072994739,6cyclictest1213033-21systemd-journal00:35:001
855070994742,3cyclictest875899-21kworker/u8:1+flush-179:020:35:250
855070994741,5cyclictest928790-21kworker/u8:1+flush-179:023:00:160
855070994741,4cyclictest871034-21kworker/u8:2+flush-179:020:05:140
855070994641,4cyclictest883860-21kworker/u8:2+events_unbound21:35:240
855070994635,9cyclictest1213033-21systemd-journal23:29:590
855072994539,5cyclictest924052-21kworker/u8:3+flush-179:022:50:261
855070994540,4cyclictest910343-21kworker/u8:0+flush-179:022:00:230
855070994537,5cyclictest1213033-21systemd-journal00:10:420
855072994434,8cyclictest885718-21/usr/sbin/munin20:45:231
855072994433,9cyclictest911305-21kworker/u8:2+flush-179:022:50:001
855070994439,4cyclictest875947-21kworker/u8:3+flush-179:020:25:170
855070994334,7cyclictest911305-21kworker/u8:2+flush-179:022:40:160
855072994235,6cyclictest874314-21kworker/u8:0+flush-179:020:10:261
855072994232,8cyclictest933560-21apt-get23:15:011
855070994236,5cyclictest885515-21kworker/u8:3+flush-179:021:15:220
855070994229,10cyclictest1213033-21systemd-journal22:10:000
85507899410,1cyclictest0-21swapper/321:39:553
85507499410,1cyclictest0-21swapper/220:24:592
855072994136,4cyclictest271rcuc/100:30:001
855072994136,4cyclictest271rcuc/100:29:591
85507299411,4cyclictest895033-21turbostat21:19:551
855074994037,2cyclictest0-21swapper/220:03:592
855072994036,2cyclictest0-21swapper/119:26:001
855072994036,2cyclictest0-21swapper/119:25:591
855072994035,4cyclictest912871-21turbostat22:14:561
855072994030,8cyclictest942044-21apt-get23:40:121
85507299401,3cyclictest0-21swapper/119:44:581
85507299400,38cyclictest714-21Xorg19:17:591
855078993936,1cyclictest0-21swapper/322:24:553
855078993932,5cyclictest895033-21turbostat21:15:013
85507899391,36cyclictest0-21swapper/320:44:553
85507899390,38cyclictest0-21swapper/322:02:593
855072993931,6cyclictest885515-21kworker/u8:3+flush-179:021:25:221
855078993836,1cyclictest0-21swapper/300:01:593
855072993834,3cyclictest919232-21turbostat22:34:551
855072993832,5cyclictest919203-21kworker/u8:0+flush-179:022:35:211
855072993832,4cyclictest940266-21latency_hist23:35:011
855072993830,6cyclictest871695-21diskstats20:00:141
85507899370,35cyclictest0-21swapper/323:36:593
85507899370,35cyclictest0-21swapper/319:45:593
855074993734,2cyclictest0-21swapper/219:58:582
855072993731,4cyclictest960123-21apt-get00:35:131
855072993728,5cyclictest0-21swapper/121:39:591
85507299370,4cyclictest888655-21munin-run20:55:001
855078993634,1cyclictest0-21swapper/319:39:543
855078993634,1cyclictest0-21swapper/300:34:543
85507899360,35cyclictest0-21swapper/320:03:003
85507899360,1cyclictest0-21swapper/323:33:003
855074993633,2cyclictest0-21swapper/223:26:592
855074993633,2cyclictest0-21swapper/221:59:552
855072993632,3cyclictest927189-21turbostat22:59:551
855072993630,4cyclictest0-21swapper/119:50:001
855078993533,1cyclictest0-21swapper/321:19:553
85507899350,1cyclictest0-21swapper/321:04:553
855074993532,2cyclictest0-21swapper/219:49:562
855074993532,2cyclictest0-21swapper/219:35:592
855072993531,3cyclictest484-21dbus-daemon21:15:001
855072993530,3cyclictest1-21systemd22:20:001
855072993527,6cyclictest953490-21latency_hist00:15:001
855078993432,1cyclictest0-21swapper/323:14:553
855078993427,5cyclictest870878-21turbostat20:00:003
85507899340,32cyclictest0-21swapper/300:35:593
855074993431,2cyclictest0-21swapper/221:12:592
855074993431,2cyclictest0-21swapper/220:16:592
855074993426,7cyclictest0-21swapper/200:18:592
855074993425,7cyclictest0-21swapper/219:41:582
85507499340,2cyclictest0-21swapper/222:06:592
855078993331,1cyclictest0-21swapper/322:50:593
855078993331,1cyclictest0-21swapper/320:51:003
855078993331,1cyclictest0-21swapper/300:22:583
855078993330,2cyclictest0-21swapper/320:59:593
855074993330,2cyclictest0-21swapper/220:28:592
855074993330,2cyclictest0-21swapper/200:02:002
85507499330,30cyclictest0-21swapper/222:20:002
85507499330,26cyclictest0-21swapper/219:20:142
85507499330,1cyclictest0-21swapper/220:05:132
855072993329,3cyclictest951905-21/usr/sbin/munin00:10:001
855072993328,3cyclictest714-21Xorg23:49:591
85507299331,30cyclictest0-21swapper/123:35:111
85507299330,31cyclictest1-21systemd21:10:001
855078993230,1cyclictest0-21swapper/319:44:593
855078993230,1cyclictest0-21swapper/319:24:593
855074993229,2cyclictest0-21swapper/222:26:592
855074993229,2cyclictest0-21swapper/222:02:592
85507299321,30cyclictest0-21swapper/121:30:141
855078993130,1cyclictest0-21swapper/321:52:583
855078993129,1cyclictest0-21swapper/322:39:553
855078993129,1cyclictest0-21swapper/321:25:033
855078993128,1cyclictest0-21swapper/319:17:593
855074993128,2cyclictest0-21swapper/223:35:122
855074993128,2cyclictest0-21swapper/219:12:592
855074993125,5cyclictest0-21swapper/221:15:152
855074993122,7cyclictest0-21swapper/220:14:582
85507499310,2cyclictest0-21swapper/223:05:592
85507499310,2cyclictest0-21swapper/223:05:592
85507299317,9cyclictest714-21Xorg20:40:581
855072993122,7cyclictest953726-21/usr/sbin/munin00:15:261
855072993110,8cyclictest879804-21hwlatdetect20:25:191
855078993028,1cyclictest0-21swapper/319:29:593
855078993028,1cyclictest0-21swapper/319:29:593
855074993027,2cyclictest0-21swapper/220:55:152
855074993027,2cyclictest0-21swapper/200:23:592
85507499300,28cyclictest0-21swapper/200:05:112
85507299306,9cyclictest714-21Xorg00:20:591
855072993021,5cyclictest0-21swapper/122:07:591
855078992927,1cyclictest0-21swapper/320:49:543
85507899290,28cyclictest0-21swapper/323:05:133
85507899290,28cyclictest0-21swapper/323:05:133
85507899290,27cyclictest0-21swapper/322:45:143
855074992926,2cyclictest0-21swapper/222:35:132
855074992926,2cyclictest0-21swapper/221:47:002
855074992926,2cyclictest0-21swapper/200:25:152
855074992926,2cyclictest0-21swapper/200:25:142
85507499290,27cyclictest0-21swapper/223:20:152
85507499290,27cyclictest0-21swapper/222:20:142
85507499290,27cyclictest0-21swapper/221:05:122
85507499290,27cyclictest0-21swapper/219:15:142
855072992923,4cyclictest883385-21phc2sys-jitter20:35:221
855078992825,2cyclictest0-21swapper/320:05:123
855078992825,2cyclictest0-21swapper/300:30:003
855078992825,2cyclictest0-21swapper/300:30:003
85507899280,27cyclictest0-21swapper/322:25:133
85507899280,27cyclictest0-21swapper/300:00:023
85507899280,26cyclictest0-21swapper/321:30:143
855074992825,2cyclictest0-21swapper/223:50:122
855074992825,2cyclictest0-21swapper/223:41:592
855074992825,2cyclictest0-21swapper/221:40:122
85507499280,26cyclictest0-21swapper/222:55:122
4577091280,7ptp4l61490irq/134-eno1-TxRx-022:20:003
4577091280,7ptp4l441ktimers/320:20:003
4577091280,7ptp4l441ktimers/319:55:003
855078992725,1cyclictest0-21swapper/322:14:553
855078992725,1cyclictest0-21swapper/321:20:153
855078992725,1cyclictest0-21swapper/321:20:143
855078992722,4cyclictest861349-21turbostat19:34:543
85507899270,26cyclictest0-21swapper/323:45:023
85507899270,24cyclictest937011-21turbostat23:25:003
85507899270,1cyclictest0-21swapper/322:30:123
855074992725,1cyclictest0-21swapper/223:45:032
855074992725,1cyclictest0-21swapper/200:34:592
85507499270,25cyclictest0-21swapper/222:12:592
85507499270,25cyclictest0-21swapper/220:38:582
85507299277,5cyclictest881688-21ntp_192.168.11420:30:201
4577091270,6ptp4l441ktimers/300:10:003
85507899260,25cyclictest879119-21turbostat20:24:593
855074992624,1cyclictest0-21swapper/222:46:592
855074992623,2cyclictest0-21swapper/220:54:552
855074992622,2cyclictest0-21swapper/220:31:592
85507499260,24cyclictest0-21swapper/223:19:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:14:553
4577091260,6ptp4l441ktimers/321:10:003
4577091260,4ptp4l61490irq/134-eno1-TxRx-020:35:003
4577091260,3ptp4l441ktimers/300:15:013
855078992523,1cyclictest0-21swapper/321:49:593
85507899250,24cyclictest0-21swapper/323:54:593
85507899250,24cyclictest0-21swapper/323:25:583
855074992523,1cyclictest0-21swapper/222:34:592
855074992522,2cyclictest0-21swapper/221:31:592
855074992521,2cyclictest0-21swapper/223:02:592
85507499250,2cyclictest0-21swapper/221:50:152
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:00:013
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:14:563
4577091250,3ptp4l441ktimers/322:45:003
4577091250,3ptp4l441ktimers/320:40:013
85507899240,23cyclictest0-21swapper/323:04:593
855074992422,1cyclictest0-21swapper/221:00:142
855074992421,2cyclictest0-21swapper/219:50:152
855074992421,2cyclictest0-21swapper/219:30:142
4577091240,3ptp4l441ktimers/320:30:003
855074992321,1cyclictest0-21swapper/221:38:582
4577091230,4ptp4l61490irq/134-eno1-TxRx-023:19:553
4577091230,3ptp4l61490irq/134-eno1-TxRx-021:59:563
4577091230,3ptp4l61490irq/134-eno1-TxRx-000:20:013
4577091230,3ptp4l441ktimers/322:09:563
4577091230,2ptp4l441ktimers/323:45:003
855074992118,2cyclictest0-21swapper/223:10:132
85507499200,2cyclictest0-21swapper/222:41:592
855070991915,2cyclictest0-21swapper/019:10:020
855074991815,2cyclictest0-21swapper/220:45:592
855072991812,4cyclictest855127-21latency_hist19:10:021
855074991613,2cyclictest0-21swapper/223:33:592
855074991512,2cyclictest0-21swapper/220:42:592
855074991411,2cyclictest0-21swapper/221:20:592
855074991411,2cyclictest0-21swapper/221:20:592
855074991411,2cyclictest0-21swapper/219:27:592
855074991411,2cyclictest0-21swapper/219:27:582
85507499118,2cyclictest0-21swapper/200:10:592
8550749985,2cyclictest0-21swapper/222:54:422
8550749952,2cyclictest0-21swapper/200:35:112
8550749930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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