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2026-09-08 - 11:05
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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 Sep 08, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120285699162148,10cyclictest1272545-21latency_hist22:45:011
120285699151138,10cyclictest1213033-21systemd-journal23:05:001
120285299134105,17cyclictest1291639-21latency_hist23:45:010
120285699132120,9cyclictest1241783-21latency_hist21:10:011
120285299131119,8cyclictest1232232-21latency_hist20:40:000
120285699130123,4cyclictest1264316-21kworker/u8:1+flush-179:022:50:201
120285699130119,8cyclictest1262724-21latency_hist22:15:011
120285699129117,10cyclictest1213033-21systemd-journal21:35:001
120285699123115,6cyclictest1275751-21kworker/u8:0+events_unbound23:20:001
120285699123112,8cyclictest1217434-21kworker/u8:3+flush-179:020:00:151
120285699120114,4cyclictest1286905-21kworker/u8:2+events_unbound23:40:021
120285699120109,8cyclictest1207565-21kworker/u8:2+flush-179:019:40:151
120285699118102,13cyclictest1290090-21kworker/u8:3+events_unbound00:00:001
120285299118113,3cyclictest1264370-21kworker/u8:2+flush-179:022:25:220
120285299118105,10cyclictest1241773-21kworker/u8:0+flush-179:021:20:260
120285699114103,7cyclictest1213033-21systemd-journal23:44:591
120285699113106,4cyclictest1295045-21kworker/u8:1+events_unbound00:00:251
12028569911198,9cyclictest1248444-21kworker/u8:2+flush-179:021:40:221
120285699111100,8cyclictest1265920-21latency_hist22:25:011
120285299110100,7cyclictest1210762-21latency_hist19:35:020
120285299110100,7cyclictest1210762-21latency_hist19:35:010
12028569910897,9cyclictest1242019-21/usr/sbin/munin21:10:171
12028569910896,9cyclictest1285528-21apt-get23:25:111
120285699107102,4cyclictest1238654-21kworker/u8:1+flush-179:021:00:181
12028569910697,6cyclictest1256613-21apt-get21:55:111
12028529910692,10cyclictest1217395-21apt-get19:55:000
12028569910598,5cyclictest1227241-21kworker/u8:2+flush-179:020:45:161
12028569910596,6cyclictest1250028-21kworker/u8:0+flush-179:021:35:231
12028529910594,9cyclictest1257922-21kworker/u8:0+flush-179:022:15:260
12028569910398,4cyclictest1272525-21kworker/u8:2+flush-179:022:45:231
12028569910295,5cyclictest1290090-21kworker/u8:3+flush-179:000:15:161
12028569910192,6cyclictest1256327-21kworker/u8:3+flush-179:022:00:191
12028569910186,12cyclictest1213033-21systemd-journal21:30:001
12028569910085,12cyclictest1213033-21systemd-journal19:55:011
1202856999989,7cyclictest1309480-21latency_hist00:40:011
1202852999991,5cyclictest1220320-21kworker/u8:0+flush-179:020:05:250
1202852999887,8cyclictest1283944-21apt-get23:20:110
1202856999792,3cyclictest1275751-21kworker/u8:0+flush-179:023:20:161
1202856999689,5cyclictest1248444-21kworker/u8:2+flush-179:021:50:211
1202856999588,5cyclictest1201308-21kworker/u8:2+flush-179:019:10:231
1202852999586,7cyclictest1223989-21kworker/u8:1+events_unbound20:20:010
1202856999385,4cyclictest1227241-21kworker/u8:2+flush-179:020:25:221
1202856999384,6cyclictest1201299-21kworker/u8:1+events_unbound19:55:251
1202852999376,12cyclictest1228798-21apt-get20:30:000
1202856999286,4cyclictest1217434-21kworker/u8:3+flush-179:020:15:261
1202852999279,10cyclictest1295045-21kworker/u8:1+events_unbound00:20:240
1202856999184,5cyclictest1201299-21kworker/u8:1+flush-179:019:20:001
1202852999183,6cyclictest1257922-21kworker/u8:0+flush-179:022:10:180
1202852999181,7cyclictest1227241-21kworker/u8:2+flush-179:020:50:140
1202856999083,5cyclictest1290090-21kworker/u8:3+flush-179:000:10:201
1202856999082,5cyclictest1294809-21latency_hist23:55:011
1202856998965,21cyclictest510-21rs:main1
1202852998876,9cyclictest1204393-21latency_hist19:15:010
1202856998780,6cyclictest1278957-21kworker/u8:3+flush-179:023:10:011
1202856998780,5cyclictest1230628-21kworker/u8:3+flush-179:021:25:001
1202856998680,4cyclictest1214992-21kworker/u8:0+events_unbound19:45:251
1202856998678,6cyclictest1264370-21kworker/u8:2+flush-179:022:30:011
1202852998674,9cyclictest1217434-21kworker/u8:3+events_unbound20:25:000
1202856998574,8cyclictest1213033-21systemd-journal20:10:001
1202852998581,2cyclictest1290090-21kworker/u8:3+events_unbound23:50:290
1202852998574,8cyclictest1250031-21kworker/u8:1+flush-179:021:50:000
1202856998477,5cyclictest1290090-21kworker/u8:3+flush-179:000:30:191
1202852998474,7cyclictest1275751-21kworker/u8:0+events_unbound23:05:170
1202856998376,5cyclictest1278957-21kworker/u8:3+flush-179:023:10:201
1202852998373,7cyclictest510-21rs:main0
1202856998258,21cyclictest1298318-21apt-get00:05:111
1202856998174,5cyclictest1248444-21kworker/u8:2+events_unbound21:45:191
1202852998175,5cyclictest1207565-21kworker/u8:2+flush-179:019:45:230
1202852998171,7cyclictest1230628-21kworker/u8:3+events_unbound21:30:270
1202852998168,10cyclictest1296434-40mandb00:00:020
1202852997973,4cyclictest1248444-21kworker/u8:2+flush-179:021:50:160
1202852997967,9cyclictest1278957-21kworker/u8:3+flush-179:023:10:290
1202852997967,8cyclictest1290090-21kworker/u8:3+flush-179:000:10:280
1202856997872,5cyclictest1227241-21kworker/u8:2+events_unbound20:55:261
1202856997872,5cyclictest1227241-21kworker/u8:2+events_unbound20:55:251
1202856997870,5cyclictest1245251-21latency_hist21:20:011
1202852997869,7cyclictest1213033-21systemd-journal20:42:170
1202856997772,4cyclictest1257922-21kworker/u8:0+flush-179:022:10:001
1202856997765,9cyclictest1306029-21apt-get00:30:011
1202856997670,4cyclictest1226221-21kworker/u8:0+flush-179:020:30:211
1202856997666,5cyclictest1256327-21kworker/u8:3+flush-179:022:15:211
1202852997664,9cyclictest1207586-21latency_hist19:25:000
1202856997567,5cyclictest1290090-21kworker/u8:3+flush-179:023:45:171
1202856997566,6cyclictest1275751-21kworker/u8:0+flush-179:023:30:181
1202852997567,5cyclictest1290090-21kworker/u8:3+events_unbound00:35:230
1202856997467,4cyclictest1190105-21kworker/u8:0+flush-179:019:20:151
1202852997467,5cyclictest1207565-21kworker/u8:2+events_unbound19:25:170
1202852997366,5cyclictest1269588-21kworker/u8:0+events_unbound22:40:010
1202856997265,5cyclictest1220320-21kworker/u8:0+events_unbound20:10:181
1202856997264,6cyclictest1213033-21systemd-journal22:38:041
1202852997164,5cyclictest1190105-21kworker/u8:0+flush-179:019:15:160
1202852997161,6cyclictest1256327-21kworker/u8:3+events_unbound21:55:230
1202856997061,7cyclictest1264370-21kworker/u8:2+flush-179:022:30:221
1202856997061,7cyclictest1213033-21systemd-journal20:44:551
1202852997062,6cyclictest1264316-21kworker/u8:1+flush-179:023:00:220
1202852996862,3cyclictest1290090-21kworker/u8:3+events_unbound00:15:140
1202852996857,8cyclictest1226221-21kworker/u8:0+events_unbound20:30:240
1202852996857,8cyclictest1224011-21latency_hist20:15:010
1202856996761,4cyclictest1201299-21kworker/u8:1+events_unbound19:30:241
1202856996761,4cyclictest1201299-21kworker/u8:1+events_unbound19:30:241
1202852996757,8cyclictest1264370-21kworker/u8:2+events_unbound22:20:250
1202856996655,8cyclictest1209173-21latency_hist19:30:021
1202852996656,8cyclictest1241773-21kworker/u8:0+flush-179:021:25:200
1202852996656,7cyclictest1253189-21latency_hist21:45:000
1202852996655,8cyclictest1202762-21latency_hist19:10:010
1202852996653,11cyclictest1291895-21apt-get23:45:110
1202852996557,6cyclictest1256327-21kworker/u8:3+events_unbound22:00:180
1202856996458,5cyclictest1272525-21kworker/u8:2+events_unbound23:00:001
1202856996358,4cyclictest1227241-21kworker/u8:2+flush-179:020:50:241
1202852996352,7cyclictest1217434-21kworker/u8:3+flush-179:020:00:210
1202852996350,9cyclictest1295045-21kworker/u8:1+events_unbound00:05:140
1202852996255,5cyclictest1248444-21kworker/u8:2+flush-179:021:35:210
1202852996254,6cyclictest1207565-21kworker/u8:2+events_unbound19:40:220
1202852996054,4cyclictest1304681-21apt-get00:25:120
1202852996047,10cyclictest1259810-21apt-get22:05:120
1202856995952,5cyclictest1226221-21kworker/u8:0+flush-179:020:35:131
1202852995953,4cyclictest1230628-21kworker/u8:3+flush-179:020:45:220
1202852995952,6cyclictest1227241-21kworker/u8:2+events_unbound20:55:190
1202852995952,6cyclictest1227241-21kworker/u8:2+events_unbound20:55:190
1202852995850,6cyclictest1275751-21kworker/u8:0+flush-179:023:15:200
1202852995850,6cyclictest1264316-21kworker/u8:1+flush-179:022:50:270
1202859995653,1cyclictest0-21swapper/321:43:593
1202856995646,7cyclictest1290090-21kworker/u8:3+events_unbound00:20:151
1202852995644,6cyclictest1238654-21kworker/u8:1+flush-179:021:15:000
1202857995450,3cyclictest0-21swapper/221:43:592
1202852995446,6cyclictest1264370-21kworker/u8:2+flush-179:022:30:170
1202852995347,4cyclictest1-21systemd00:33:140
120285299521,49cyclictest714-21Xorg22:56:580
1202852995042,7cyclictest1201299-21kworker/u8:1+events_unbound19:35:200
4577091490,13ptp4l61490irq/134-eno1-TxRx-019:09:553
1202852994943,4cyclictest1288684-21/usr/sbin/munin23:35:160
1202852994942,5cyclictest1295045-21kworker/u8:1+flush-179:000:00:190
120285299490,46cyclictest0-21swapper/022:40:120
1202852994840,5cyclictest1238654-21kworker/u8:1+flush-179:021:00:190
1202856994740,5cyclictest1207565-21kworker/u8:2+events_unbound19:35:151
120285299460,42cyclictest0-21swapper/019:55:140
1202857994340,2cyclictest0-21swapper/221:35:592
1202857994239,2cyclictest0-21swapper/200:06:592
120285799420,2cyclictest0-21swapper/221:10:592
120285999410,39cyclictest1217399-21turbostat19:55:003
1202852994135,5cyclictest1238654-21kworker/u8:1+flush-179:021:05:260
120285799400,38cyclictest0-21swapper/222:25:592
1202852994032,5cyclictest1282059-21kworker/u8:1+flush-179:023:25:190
120285999390,4cyclictest1227219-21turbostat20:25:003
120285799380,36cyclictest0-21swapper/220:51:592
120285799380,36cyclictest0-21swapper/200:36:592
120285799380,35cyclictest0-21swapper/219:55:012
1202852993832,4cyclictest1272525-21kworker/u8:2+flush-179:022:45:210
1202859993735,1cyclictest0-21swapper/323:53:593
1202859993734,2cyclictest0-21swapper/322:11:593
1202859993731,5cyclictest1237014-21turbostat20:55:013
120285999370,36cyclictest0-21swapper/322:59:583
120285999370,2cyclictest0-21swapper/320:56:593
120285999370,2cyclictest0-21swapper/320:56:593
1202857993734,2cyclictest0-21swapper/223:20:592
1202857993734,2cyclictest0-21swapper/222:47:592
120285799370,35cyclictest0-21swapper/220:57:002
120285799370,35cyclictest0-21swapper/220:56:592
1202859993634,1cyclictest0-21swapper/323:42:593
1202859993634,1cyclictest0-21swapper/322:29:553
120285999360,35cyclictest0-21swapper/319:35:593
120285999360,34cyclictest0-21swapper/320:25:593
1202857993634,1cyclictest0-21swapper/221:04:592
1202857993634,1cyclictest0-21swapper/200:33:002
1202857993633,2cyclictest0-21swapper/222:37:592
1202857993632,2cyclictest0-21swapper/223:53:582
1202857993632,2cyclictest0-21swapper/223:42:592
1202859993533,1cyclictest0-21swapper/322:44:543
1202857993532,2cyclictest0-21swapper/222:11:592
1202857993531,2cyclictest0-21swapper/222:44:552
4577091340,5ptp4l441ktimers/300:20:013
1202859993429,4cyclictest1245239-21turbostat21:20:003
1202857993429,2cyclictest0-21swapper/223:25:592
120285299341,19cyclictest1288170-21timerandwakeup23:30:230
1202859993331,1cyclictest0-21swapper/320:15:593
1202859993330,2cyclictest0-21swapper/323:25:593
1202859993230,1cyclictest0-21swapper/321:34:553
1202859993229,2cyclictest0-21swapper/322:52:593
1202857993229,2cyclictest0-21swapper/220:15:582
4577091310,6ptp4l441ktimers/321:25:003
1202859993128,2cyclictest0-21swapper/321:39:593
1202859993128,2cyclictest0-21swapper/321:05:163
120285999310,29cyclictest0-21swapper/320:45:123
1202857993128,2cyclictest0-21swapper/221:34:552
120285799310,29cyclictest0-21swapper/221:56:002
4577091300,7ptp4l441ktimers/320:15:003
4577091300,6ptp4l441ktimers/300:25:003
1202859993028,1cyclictest0-21swapper/321:04:003
1202859993028,1cyclictest0-21swapper/319:30:593
1202859993028,1cyclictest0-21swapper/319:30:583
1202859993027,2cyclictest0-21swapper/300:30:043
120285999300,29cyclictest0-21swapper/320:30:143
1202857993027,2cyclictest0-21swapper/222:52:592
1202857993027,2cyclictest0-21swapper/222:20:132
1202857993027,2cyclictest0-21swapper/221:06:592
1202857993026,2cyclictest0-21swapper/219:30:592
1202857993026,2cyclictest0-21swapper/219:30:582
120285799300,29cyclictest0-21swapper/223:35:112
120285799300,28cyclictest0-21swapper/223:05:142
4577091290,6ptp4l441ktimers/322:20:003
4577091290,6ptp4l441ktimers/320:39:593
1202859992927,1cyclictest0-21swapper/322:35:133
1202859992926,2cyclictest0-21swapper/321:25:123
1202859992926,2cyclictest0-21swapper/300:27:593
1202859992926,2cyclictest0-21swapper/300:09:583
1202859992925,3cyclictest0-21swapper/300:00:123
120285999290,28cyclictest0-21swapper/319:40:023
120285999290,27cyclictest0-21swapper/323:45:123
120285999290,27cyclictest0-21swapper/322:20:133
120285999290,27cyclictest0-21swapper/320:05:143
120285999290,27cyclictest0-21swapper/319:10:143
120285999290,27cyclictest0-21swapper/300:10:173
120285999290,1cyclictest0-21swapper/323:05:143
1202857992926,2cyclictest0-21swapper/223:45:132
1202857992926,2cyclictest0-21swapper/220:45:122
1202857992924,3cyclictest0-21swapper/220:20:132
120285799290,2cyclictest0-21swapper/223:10:172
120285799290,28cyclictest0-21swapper/221:25:122
120285799290,27cyclictest0-21swapper/220:30:122
120285799290,27cyclictest0-21swapper/219:40:002
120285799290,27cyclictest0-21swapper/200:25:132
120285799290,27cyclictest0-21swapper/200:10:162
120285799290,21cyclictest0-21swapper/221:15:022
4577091280,6ptp4l441ktimers/323:05:003
4577091280,6ptp4l441ktimers/321:50:003
4577091280,5ptp4l61490irq/134-eno1-TxRx-019:50:013
4577091280,5ptp4l441ktimers/323:35:003
1202859992825,2cyclictest0-21swapper/323:10:173
120285999280,27cyclictest0-21swapper/323:35:123
120285999280,27cyclictest0-21swapper/319:25:123
120285999280,26cyclictest0-21swapper/323:20:133
120285999280,26cyclictest0-21swapper/322:30:143
1202857992825,2cyclictest0-21swapper/220:25:122
1202857992825,2cyclictest0-21swapper/219:40:012
1202857992825,2cyclictest0-21swapper/200:20:142
1202857992824,2cyclictest0-21swapper/220:05:152
1202857992824,2cyclictest0-21swapper/200:17:002
120285799280,27cyclictest0-21swapper/219:25:122
120285799280,26cyclictest0-21swapper/222:30:142
120285799280,26cyclictest0-21swapper/219:10:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:05:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-020:00:013
4577091270,5ptp4l441ktimers/322:49:553
4577091270,5ptp4l441ktimers/300:00:013
120285999270,26cyclictest0-21swapper/323:19:003
120285999270,1cyclictest0-21swapper/321:55:133
1202857992724,2cyclictest0-21swapper/200:00:132
120285799270,25cyclictest0-21swapper/222:04:592
120285799270,25cyclictest0-21swapper/221:20:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-022:10:003
1202859992624,1cyclictest0-21swapper/321:52:003
1202859992623,2cyclictest0-21swapper/300:35:123
120285999260,19cyclictest0-21swapper/322:04:593
1202857992623,2cyclictest0-21swapper/220:00:592
1202857992623,2cyclictest0-21swapper/219:48:002
120285799260,25cyclictest0-21swapper/223:31:002
120285799260,24cyclictest0-21swapper/223:59:592
120285799260,24cyclictest0-21swapper/222:19:552
4577091250,5ptp4l61490irq/134-eno1-TxRx-021:15:003
120285999250,24cyclictest0-21swapper/319:21:593
1202857992523,1cyclictest0-21swapper/220:40:002
1202857992522,2cyclictest0-21swapper/221:51:592
120285799250,2cyclictest0-21swapper/221:45:142
4577091240,3ptp4l441ktimers/320:44:553
1202857992421,2cyclictest0-21swapper/223:19:002
4577091230,3ptp4l61490irq/134-eno1-TxRx-019:19:563
1202857992320,2cyclictest0-21swapper/223:01:592
1202857992218,2cyclictest0-21swapper/220:13:582
120285699222,14cyclictest1202854-21ls19:10:021
1202857992119,1cyclictest0-21swapper/222:58:592
1202857992118,2cyclictest0-21swapper/222:05:592
1202857992017,2cyclictest0-21swapper/220:40:592
1202857991815,2cyclictest0-21swapper/219:56:592
1202857991814,2cyclictest0-21swapper/219:17:592
12028579952,2cyclictest0-21swapper/219:20:092
12028579930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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