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2026-08-13 - 06:37
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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 Thu Aug 13, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193500499146131,12cyclictest3482035-21cups-browsed00:00:010
193500499144133,8cyclictest1999878-21latency_hist22:30:020
193500699139126,9cyclictest1213033-21systemd-journal22:25:021
193500499139128,7cyclictest2017921-21latency_hist23:25:010
193500499133112,17cyclictest1934863-21latency_hist19:10:010
193500499127122,2cyclictest151ktimers/022:25:010
193500499126116,7cyclictest1951061-21apt-get20:00:000
193500699118109,6cyclictest2001983-21kworker/u8:2+flush-179:022:40:011
193500499116100,13cyclictest2038710-21http00:30:010
19350069911392,19cyclictest2007436-21kworker/u8:0+flush-179:022:55:001
19350069911390,20cyclictest2010198-21kworker/u8:1+flush-179:023:15:001
193500699111104,5cyclictest2019745-21kworker/u8:0+flush-179:023:35:151
193500699110102,6cyclictest2021097-21latency_hist23:35:011
19350069910996,10cyclictest1213033-21systemd-journal23:44:591
19350069910696,8cyclictest2032558-21apt-get00:10:111
19350069910694,9cyclictest2037089-21latency_hist00:25:021
193500499106100,4cyclictest2025869-21kworker/u8:2+flush-179:000:00:240
19350049910595,7cyclictest1946538-21/usr/sbin/munin19:45:250
19350069910389,12cyclictest1941505-21kworker/u8:0+flush-179:021:15:011
19350069910191,7cyclictest1956081-21kworker/u8:2+flush-179:020:25:221
19350069910188,9cyclictest1972346-21kworker/u8:3+flush-179:021:10:011
19350049910192,7cyclictest1943108-21latency_hist19:35:020
1935004991012,93cyclictest1-21systemd22:40:010
19350069910090,7cyclictest1995971-21kworker/u8:0+flush-179:022:25:201
19350049910089,9cyclictest1213033-21systemd-journal21:00:000
1935006999992,5cyclictest2037078-21kworker/u8:1+flush-179:000:30:221
1935006999992,5cyclictest1956081-21kworker/u8:2+flush-179:020:30:261
1935006999991,6cyclictest1957961-21latency_hist20:20:021
1935006999888,8cyclictest1983669-21kworker/u8:3+flush-179:022:20:001
1935015999689,5cyclictest1956104-21turbostat20:15:003
1935006999687,6cyclictest1885355-21kworker/u8:1+flush-179:020:00:161
1935004999687,6cyclictest1978902-21kworker/u8:2+flush-179:021:35:250
1935004999687,6cyclictest1978902-21kworker/u8:2+flush-179:021:35:240
1935006999583,9cyclictest2033924-21kworker/u8:3+flush-179:000:15:221
1935004999585,8cyclictest1995971-21kworker/u8:0+flush-179:022:30:140
1935015999386,5cyclictest1982110-21turbostat21:35:003
1935006999286,4cyclictest1885355-21kworker/u8:1+flush-179:020:05:211
1935006999283,6cyclictest2025869-21kworker/u8:2+flush-179:023:55:221
1935004999284,6cyclictest1943090-21kworker/u8:3+flush-179:019:40:200
1935004999284,5cyclictest2029122-21kworker/u8:0+events_unbound00:10:130
1935004999180,8cyclictest1938074-21apt-get19:20:000
1935004999076,11cyclictest484-21dbus-daemon21:10:000
1935006998977,3cyclictest2037078-21kworker/u8:1+flush-179:000:40:001
1935006998778,6cyclictest1941505-21kworker/u8:0+flush-179:019:55:211
1935006998777,8cyclictest2005215-21kworker/u8:3+flush-179:023:05:011
1935004998777,7cyclictest2018176-21apt-get23:25:120
1935004998679,5cyclictest2040505-21kworker/u8:0+flush-179:000:35:210
1935004998679,5cyclictest1983669-21kworker/u8:3+events_unbound21:45:240
1935004998673,10cyclictest1213033-21systemd-journal22:50:000
1935006998476,6cyclictest1939931-21latency_hist19:25:001
1935006998474,8cyclictest2011806-21apt-get23:05:121
1935004998475,7cyclictest1994833-21latency_hist22:15:010
1935004998475,7cyclictest1938074-21apt-get19:20:020
1935004998371,9cyclictest1213033-21systemd-journal20:55:000
1935006998255,24cyclictest1213033-21systemd-journal19:29:451
1935004998273,7cyclictest1985549-21kworker/u8:1+flush-179:022:00:000
1935004998273,5cyclictest1983669-21kworker/u8:3+flush-179:022:15:140
1935006998175,4cyclictest1978902-21kworker/u8:2+flush-179:021:30:241
1935004998173,6cyclictest2032303-21latency_hist00:10:010
1935004998171,7cyclictest2007436-21kworker/u8:0+events_unbound22:55:170
1935006998070,7cyclictest1956081-21kworker/u8:2+events_unbound20:40:171
1935006998063,16cyclictest2037078-21kworker/u8:1+flush-179:000:25:261
1935004998072,5cyclictest2019745-21kworker/u8:0+events_unbound23:50:140
1935004998070,7cyclictest2010198-21kworker/u8:1+events_unbound23:05:200
1935006997973,4cyclictest1995971-21kworker/u8:0+events_unbound22:30:131
1935006997971,5cyclictest2025869-21kworker/u8:2+flush-179:000:10:001
1935004997975,3cyclictest1983669-21kworker/u8:3+flush-179:021:50:250
1935006997871,5cyclictest2019745-21kworker/u8:0+flush-179:023:45:151
1935004997871,5cyclictest1956081-21kworker/u8:2+flush-179:020:45:140
1935006997770,5cyclictest1983669-21kworker/u8:3+flush-179:021:55:171
1935004997670,5cyclictest2033924-21kworker/u8:3+flush-179:000:20:250
1935006997566,7cyclictest2019745-21kworker/u8:0+flush-179:023:50:201
1935004997567,7cyclictest2019745-21kworker/u8:0+events_unbound23:45:220
1935004997567,6cyclictest2019745-21kworker/u8:0+flush-179:023:30:250
1935004997564,8cyclictest1885355-21kworker/u8:1+flush-179:019:25:190
1935006997467,5cyclictest1978902-21kworker/u8:2+events_unbound21:35:161
1935006997467,5cyclictest1978902-21kworker/u8:2+events_unbound21:35:151
1935004997466,5cyclictest2001983-21kworker/u8:2+flush-179:022:40:160
1935006997368,4cyclictest1972346-21kworker/u8:3+flush-179:021:20:251
1935004997365,6cyclictest1941505-21kworker/u8:0+flush-179:020:10:220
1935006997264,6cyclictest1983669-21kworker/u8:3+flush-179:021:50:211
1935006997260,10cyclictest1962986-21apt-get20:35:111
1935004997262,6cyclictest1956081-21kworker/u8:2+events_unbound20:20:180
1935006997166,4cyclictest1941505-21kworker/u8:0+events_unbound19:40:001
1935006997165,4cyclictest1965904-21kworker/u8:1+events_unbound20:55:261
1935006997160,8cyclictest1941505-21kworker/u8:0+flush-179:019:35:001
1935006997064,4cyclictest1972346-21kworker/u8:3+flush-179:021:15:221
1935006997063,5cyclictest1885355-21kworker/u8:1+flush-179:019:50:151
1935004997064,4cyclictest2019745-21kworker/u8:0+flush-179:023:35:260
1935006996961,5cyclictest1943090-21kworker/u8:3+flush-179:019:40:171
1935006996947,6cyclictest2003849-21apt-get22:40:111
1935004996961,5cyclictest2033924-21kworker/u8:3+flush-179:000:15:250
1935004996958,9cyclictest1213033-21systemd-journal20:20:000
1935004996862,5cyclictest1956081-21kworker/u8:2+events_unbound20:30:220
1935004996761,4cyclictest1885355-21kworker/u8:1+flush-179:019:50:150
1935004996760,5cyclictest1956081-21kworker/u8:2+flush-179:020:40:140
1935006996660,5cyclictest1941505-21kworker/u8:0+flush-179:020:45:261
1935006996659,5cyclictest1956081-21kworker/u8:2+events_unbound20:20:231
1935004996660,5cyclictest1885355-21kworker/u8:1+events_unbound20:00:190
1935006996558,5cyclictest2017956-21kworker/u8:2+flush-179:023:25:251
1935006996558,5cyclictest1985549-21kworker/u8:1+flush-179:022:10:211
1935006996552,10cyclictest1983669-21kworker/u8:3+flush-179:022:00:211
1935004996560,4cyclictest1885355-21kworker/u8:1+flush-179:020:05:160
1935004996559,4cyclictest1983669-21kworker/u8:3+events_unbound22:00:250
1935004996558,5cyclictest1956081-21kworker/u8:2+flush-179:020:25:160
1935004996557,6cyclictest2016313-21latency_hist23:20:010
193500499651,59cyclictest2011589-21munin-run23:05:010
1935006996458,4cyclictest1941505-21kworker/u8:0+events_unbound19:45:171
1935004996458,4cyclictest1941505-21kworker/u8:0+flush-179:021:25:260
1935004996457,5cyclictest1941505-21kworker/u8:0+flush-179:021:00:180
1935006996359,3cyclictest1941505-21kworker/u8:0+events_unbound21:00:241
1935006996356,5cyclictest1885355-21kworker/u8:1+events_unbound19:15:181
1935006996356,4cyclictest2010198-21kworker/u8:1+flush-179:023:20:151
1935006996256,5cyclictest1930387-21kworker/u8:3+flush-179:019:10:261
1935004996256,5cyclictest1956081-21kworker/u8:2+flush-179:020:35:170
1935004996256,4cyclictest2019745-21kworker/u8:0+events_unbound23:40:190
1935004996155,5cyclictest1941505-21kworker/u8:0+events_unbound21:10:240
1935006996054,4cyclictest1941505-21kworker/u8:0+events_unbound21:45:121
1935004996049,9cyclictest2037078-21kworker/u8:1+events_unbound00:30:230
1935006995848,6cyclictest2025869-21kworker/u8:2+flush-179:000:00:221
1935006995751,5cyclictest1983669-21kworker/u8:3+flush-179:022:05:261
1935006995751,4cyclictest1885355-21kworker/u8:1+events_unbound20:10:121
1935015995654,1cyclictest0-21swapper/319:53:593
1935004995651,4cyclictest1885355-21kworker/u8:1+events_unbound19:35:250
1935004995649,5cyclictest1972346-21kworker/u8:3+flush-179:021:15:160
1935006995449,4cyclictest2007436-21kworker/u8:0+events_unbound22:55:231
1935004995345,6cyclictest1978902-21kworker/u8:2+flush-179:021:30:210
1935006995247,4cyclictest1941505-21kworker/u8:0+events_unbound20:50:221
1935006995145,5cyclictest2010198-21kworker/u8:1+flush-179:023:15:241
1935004995148,2cyclictest1941505-21kworker/u8:0+events_unbound21:40:240
1935004995045,4cyclictest1972346-21kworker/u8:3+events_unbound21:20:260
1935004995044,5cyclictest1983669-21kworker/u8:3+flush-179:022:05:210
4577091490,13ptp4l61490irq/134-eno1-TxRx-019:10:003
1935010994946,2cyclictest0-21swapper/223:29:002
1935010994946,2cyclictest0-21swapper/200:31:002
1935006994946,2cyclictest0-21swapper/122:48:591
1935006994944,4cyclictest1941505-21kworker/u8:0+flush-179:021:40:271
1935004994740,5cyclictest1936474-21latency_hist19:15:010
1935006994540,4cyclictest1941505-21kworker/u8:0+flush-179:021:25:221
1935004994439,4cyclictest2010198-21kworker/u8:1+flush-179:023:10:200
1935010994238,2cyclictest0-21swapper/221:01:002
193501599410,40cyclictest0-21swapper/320:49:593
1935010994138,2cyclictest0-21swapper/222:48:592
193501099410,38cyclictest0-21swapper/219:21:592
1935004994135,4cyclictest2007436-21kworker/u8:0+events_unbound22:50:170
1935015994038,1cyclictest0-21swapper/323:05:593
1935015994038,1cyclictest0-21swapper/322:30:593
1935010994037,2cyclictest0-21swapper/200:01:592
1935015993935,3cyclictest1941528-21turbostat19:30:003
1935015993934,4cyclictest2027475-21turbostat23:55:003
1935015993835,2cyclictest0-21swapper/322:40:593
1935015993835,2cyclictest0-21swapper/320:36:003
1935010993834,2cyclictest0-21swapper/221:45:592
1935010993834,2cyclictest0-21swapper/221:14:592
1935010993834,2cyclictest0-21swapper/220:47:592
193501099380,35cyclictest0-21swapper/219:49:542
1935015993732,4cyclictest2009964-21turbostat23:00:003
1935010993735,1cyclictest0-21swapper/220:15:002
193501099370,35cyclictest0-21swapper/223:47:592
193501099370,35cyclictest0-21swapper/200:17:592
1935015993634,1cyclictest0-21swapper/323:44:553
1935015993634,1cyclictest0-21swapper/321:29:003
1935015993634,1cyclictest0-21swapper/321:08:593
1935015993633,2cyclictest0-21swapper/320:27:583
193501599360,35cyclictest0-21swapper/323:45:583
193501599360,35cyclictest0-21swapper/323:15:593
193501599360,35cyclictest0-21swapper/322:48:593
193501599360,35cyclictest0-21swapper/300:01:593
193501599360,1cyclictest0-21swapper/300:19:553
1935010993633,2cyclictest0-21swapper/222:27:592
1935015993533,1cyclictest0-21swapper/322:17:593
1935015993533,1cyclictest0-21swapper/322:04:553
1935015993533,1cyclictest0-21swapper/319:20:583
1935015993533,1cyclictest0-21swapper/319:16:003
1935015993532,2cyclictest0-21swapper/319:42:583
193501599350,1cyclictest0-21swapper/319:47:003
1935010993533,1cyclictest0-21swapper/219:14:592
1935010993532,2cyclictest0-21swapper/222:59:552
1935010993532,2cyclictest0-21swapper/221:58:592
1935010993532,2cyclictest0-21swapper/220:55:582
1935010993532,2cyclictest0-21swapper/220:19:592
1935010993531,2cyclictest0-21swapper/223:07:592
1935015993431,2cyclictest0-21swapper/300:31:003
1935015993431,2cyclictest0-21swapper/300:27:003
1935010993431,2cyclictest0-21swapper/221:16:002
1935010993431,2cyclictest0-21swapper/220:09:552
1935010993430,2cyclictest0-21swapper/222:50:592
1935015993331,1cyclictest0-21swapper/323:28:003
1935010993330,2cyclictest0-21swapper/222:10:592
1935010993330,2cyclictest0-21swapper/220:42:592
1935010993330,1cyclictest0-21swapper/220:04:592
1935015993230,1cyclictest0-21swapper/323:39:593
1935015993230,1cyclictest0-21swapper/320:18:593
1935015993230,1cyclictest0-21swapper/300:10:593
1935015993227,4cyclictest1962737-21turbostat20:34:593
1935015993226,5cyclictest1972304-21turbostat21:05:003
1935010993229,2cyclictest0-21swapper/222:44:552
1935010993229,2cyclictest0-21swapper/221:45:002
1935010993229,2cyclictest0-21swapper/220:35:592
1935010993229,2cyclictest0-21swapper/219:27:592
1935015993129,1cyclictest0-21swapper/322:21:593
1935015993129,1cyclictest0-21swapper/321:40:583
1935015993129,1cyclictest0-21swapper/320:56:593
1935015993129,1cyclictest0-21swapper/320:05:003
1935010993128,2cyclictest0-21swapper/200:36:592
4577091300,7ptp4l441ktimers/300:25:003
4577091300,6ptp4l441ktimers/321:20:003
1935015993028,1cyclictest0-21swapper/322:13:593
1935015993028,1cyclictest0-21swapper/321:54:553
1935015993028,1cyclictest0-21swapper/300:39:543
1935015993027,2cyclictest0-21swapper/320:06:003
1935010993027,2cyclictest0-21swapper/220:50:592
193501099300,2cyclictest0-21swapper/223:55:142
193501099300,28cyclictest0-21swapper/200:28:592
193501099300,1cyclictest0-21swapper/222:40:012
4577091290,6ptp4l441ktimers/322:10:003
1935015992927,1cyclictest0-21swapper/321:14:563
1935015992927,1cyclictest0-21swapper/319:58:593
193501599290,28cyclictest0-21swapper/300:05:173
193501599290,27cyclictest0-21swapper/322:35:033
193501599290,27cyclictest0-21swapper/300:00:023
1935010992926,2cyclictest0-21swapper/220:20:132
193501099290,2cyclictest0-21swapper/223:30:132
193501099290,27cyclictest0-21swapper/221:30:142
193501099290,27cyclictest0-21swapper/219:35:122
193501099290,21cyclictest0-21swapper/221:20:132
193501099290,1cyclictest0-21swapper/223:40:132
193501099290,1cyclictest0-21swapper/219:30:122
4577091280,6ptp4l441ktimers/321:25:003
4577091280,5ptp4l441ktimers/323:05:013
1935015992826,1cyclictest0-21swapper/322:54:593
1935015992826,1cyclictest0-21swapper/320:51:003
193501599280,26cyclictest0-21swapper/319:10:133
1935010992826,1cyclictest0-21swapper/220:34:592
1935010992825,2cyclictest0-21swapper/222:05:122
193501099280,26cyclictest0-21swapper/221:05:022
4577091270,5ptp4l441ktimers/323:34:553
4577091270,5ptp4l441ktimers/322:00:003
4577091270,4ptp4l441ktimers/320:25:023
1935015992725,1cyclictest0-21swapper/323:20:593
1935015992725,1cyclictest0-21swapper/323:14:003
1935015992725,1cyclictest0-21swapper/322:25:123
193501599270,1cyclictest0-21swapper/321:35:133
193501599270,1cyclictest0-21swapper/321:35:133
1935010992724,2cyclictest0-21swapper/221:25:142
193501099270,25cyclictest0-21swapper/222:23:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-021:50:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-019:39:563
4577091260,5ptp4l441ktimers/319:34:563
1935010992623,2cyclictest0-21swapper/222:33:592
1935010992623,2cyclictest0-21swapper/222:02:592
1935010992623,2cyclictest0-21swapper/219:17:002
1935010992622,2cyclictest0-21swapper/222:16:592
193501099260,24cyclictest0-21swapper/219:55:132
1935015992523,1cyclictest0-21swapper/320:42:583
1935010992522,2cyclictest0-21swapper/223:53:582
193501099250,2cyclictest0-21swapper/219:42:592
193501099250,2cyclictest0-21swapper/200:13:002
1935010992421,2cyclictest0-21swapper/221:35:132
1935010992421,2cyclictest0-21swapper/221:35:132
1935010992420,2cyclictest0-21swapper/221:54:592
1935010992320,2cyclictest0-21swapper/223:03:592
1935010992320,2cyclictest0-21swapper/219:52:592
1935010992219,2cyclictest0-21swapper/200:09:592
1935010992118,2cyclictest0-21swapper/220:26:592
1935010992118,2cyclictest0-21swapper/200:24:592
1935006992015,4cyclictest0-21swapper/119:10:021
1935010991815,2cyclictest0-21swapper/223:39:552
1935010991815,2cyclictest0-21swapper/223:16:592
1935010991714,2cyclictest0-21swapper/223:21:592
1935010991714,2cyclictest0-21swapper/223:10:592
19350109940,2cyclictest0-21swapper/219:10:022
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