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2026-06-12 - 08:37
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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 Fri Jun 12, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
166136599128118,7cyclictest1696821-21latency_hist21:00:011
166136599122111,8cyclictest1709815-21latency_hist21:40:011
16613639911297,11cyclictest1213033-21systemd-journal22:05:000
16613639911198,10cyclictest1213033-21systemd-journal00:03:590
16613639910981,17cyclictest1751490-21latency_hist23:50:010
16613639910796,8cyclictest1762673-21kworker/u8:1+flush-179:000:35:260
16613639910595,7cyclictest1695216-21latency_hist20:55:010
16613659910089,8cyclictest1213033-21systemd-journal20:20:001
16613659910077,20cyclictest1706621-21latency_hist21:30:011
16613639910087,9cyclictest1661245-21kworker/u8:1+events_unbound19:15:010
1661365999687,6cyclictest1691765-21kworker/u8:0+flush-179:020:45:011
1661363999684,8cyclictest1753071-21kworker/u8:1+events_unbound00:00:000
1661365999586,6cyclictest1738500-21latency_hist23:10:011
1661365999487,5cyclictest1675592-21kworker/u8:0+flush-179:019:55:201
1661363999281,8cyclictest1719353-21latency_hist22:10:010
1661363998979,7cyclictest1687007-21latency_hist20:30:010
1661365998879,7cyclictest1735510-21kworker/u8:0+flush-179:023:30:161
1661365998578,5cyclictest1665142-21kworker/u8:0+flush-179:019:40:221
1661365998577,6cyclictest1740375-21kworker/u8:1+flush-179:023:20:011
1661363998574,8cyclictest1715111-21diskstats21:55:140
1661365998376,4cyclictest1757900-21kworker/u8:3+flush-179:000:20:211
1661365998370,11cyclictest1213033-21systemd-journal00:20:011
1661365998370,11cyclictest1213033-21systemd-journal00:20:001
1661365998346,22cyclictest1717767-21latency_hist22:05:001
1661363998377,4cyclictest1746145-21kworker/u8:1+events_unbound23:40:010
1661363998271,9cyclictest1677180-21kworker/u8:2+events_unbound20:15:010
1661363998171,8cyclictest1692043-21apt-get20:45:110
1661363998169,9cyclictest1661245-21kworker/u8:1+flush-179:019:15:240
1661365998076,2cyclictest1688579-21kworker/u8:2+events_unbound20:40:011
1661365998073,5cyclictest1669225-21kworker/u8:3+flush-179:019:35:011
1661363997971,6cyclictest1735511-21/usr/sbin/munin23:00:170
1661363997971,6cyclictest1711401-21latency_hist21:45:010
1661365997462,9cyclictest1693374-21latency_hist20:50:011
1661363997466,5cyclictest1754735-21kworker/u8:0+flush-179:000:10:190
1661365997364,6cyclictest1711434-21kworker/u8:3+events_unbound21:55:231
1661363997365,5cyclictest1727303-21latency_hist22:35:010
1661363997354,17cyclictest1685174-21apt-get20:25:000
1661365997268,3cyclictest1675592-21kworker/u8:0+flush-179:020:12:211
1661365997265,5cyclictest1720972-21kworker/u8:2+flush-179:022:25:301
1661365997063,5cyclictest1743569-21kworker/u8:2+events_unbound23:45:001
166137099690,66cyclictest0-21swapper/320:39:593
1661365996963,4cyclictest1685297-21kworker/u8:3+flush-179:020:30:221
1661365996861,5cyclictest1720972-21kworker/u8:2+events_unbound23:00:241
1661365996858,7cyclictest1711434-21kworker/u8:3+flush-179:022:40:241
1661365996762,4cyclictest1693354-21kworker/u8:1+flush-179:021:05:211
1661365996762,4cyclictest1693354-21kworker/u8:1+flush-179:021:05:211
1661365996759,6cyclictest1213033-21systemd-journal22:53:251
1661363996754,10cyclictest1693354-21kworker/u8:1+flush-179:021:00:210
1661365996657,7cyclictest1743792-21apt-get23:25:101
1661363996657,7cyclictest1754735-21kworker/u8:0+events_unbound00:10:000
1661365996558,4cyclictest1735257-21latency_hist23:00:011
1661365996454,7cyclictest1719607-21apt-get22:10:111
1661365996356,4cyclictest1698464-21kworker/u8:3+events_unbound21:15:261
1661365996353,7cyclictest1669225-21kworker/u8:3+events_unbound19:35:201
1661365996352,9cyclictest1213033-21systemd-journal21:45:001
1661365996155,5cyclictest1675592-21kworker/u8:0+flush-179:020:00:151
1661365996153,6cyclictest1661245-21kworker/u8:1+flush-179:019:15:161
1661365996152,7cyclictest1732081-21latency_hist22:50:011
1661363996152,7cyclictest1720972-21kworker/u8:2+flush-179:022:45:230
1661363996054,4cyclictest1757900-21kworker/u8:3+flush-179:000:20:260
1661363996052,6cyclictest1693354-21kworker/u8:1+flush-179:021:20:230
1661363996050,8cyclictest1753077-21latency_hist23:55:010
1661365995954,4cyclictest1693354-21kworker/u8:1+flush-179:021:10:241
1661365995952,5cyclictest1757900-21kworker/u8:3+events_unbound00:15:011
1661365995850,5cyclictest1725753-21kworker/u8:1+flush-179:022:35:161
1661365995849,7cyclictest1746698-21kworker/u8:3+flush-179:023:50:011
1661363995847,8cyclictest1665142-21kworker/u8:0+flush-179:019:35:210
1661370995750,5cyclictest1765890-21turbostat00:35:003
1661365995651,2cyclictest1720972-21kworker/u8:2+flush-179:023:10:191
1661363995649,5cyclictest1716148-21kworker/u8:1+events_unbound22:10:240
1661363995648,6cyclictest1706666-21kworker/u8:2+flush-179:021:50:220
1661363995648,6cyclictest1677466-21apt-get20:00:110
1661365995550,4cyclictest1720972-21kworker/u8:2+flush-179:022:33:261
1661365995549,4cyclictest1712987-21latency_hist21:50:001
1661365995547,6cyclictest1762673-21kworker/u8:1+flush-179:000:35:001
1661365995546,7cyclictest1711434-21kworker/u8:3+flush-179:022:20:221
1661365995544,9cyclictest1754676-40logrotate00:00:001
1661363995545,7cyclictest1735510-21kworker/u8:0+flush-179:023:20:210
1661370995451,2cyclictest0-21swapper/319:49:003
1661365995443,8cyclictest1665142-21kworker/u8:0+flush-179:019:20:231
1661363995442,9cyclictest1665142-21kworker/u8:0+flush-179:019:25:240
166136399541,2cyclictest714-21Xorg23:05:590
1661365995349,3cyclictest1698464-21kworker/u8:3+flush-179:021:24:201
1661365995347,5cyclictest1711434-21kworker/u8:3+flush-179:022:10:001
1661365995329,7cyclictest1756328-21latency_hist00:05:001
1661365995242,8cyclictest1707674-21ntp_states21:30:211
1661365995242,8cyclictest1707674-21ntp_states21:30:211
1661363995249,2cyclictest1711434-21kworker/u8:3+flush-179:022:50:250
1661363995246,4cyclictest1764282-21latency_hist00:30:010
1661363995245,5cyclictest1748576-21apt-get23:40:130
1661363995142,6cyclictest1703435-21latency_hist21:20:010
1661363995140,8cyclictest1708209-21latency_hist21:35:010
1661363995140,8cyclictest1708209-21latency_hist21:35:010
1661365995047,2cyclictest0-21swapper/100:38:001
1661365995042,6cyclictest1665142-21kworker/u8:0+flush-179:019:45:151
4577091490,9ptp4l61490irq/134-eno1-TxRx-019:05:543
1661365994943,5cyclictest1743569-21kworker/u8:2+flush-179:023:35:261
1661365994943,4cyclictest1735510-21kworker/u8:0+flush-179:023:20:221
1661365994931,14cyclictest1746698-21kworker/u8:3+flush-179:023:55:011
166136599491,5cyclictest1693888-21apt-get20:50:121
1661365994841,5cyclictest1677243-21kworker/u8:3+flush-179:020:05:251
1661365994831,16cyclictest1683594-21perf20:24:551
166136399481,45cyclictest1700273-21basename21:10:010
166136399481,45cyclictest1700273-21basename21:10:010
1661365994742,4cyclictest1688579-21kworker/u8:2+flush-179:021:00:271
166136599470,45cyclictest1674026-21turbostat19:54:551
1661363994740,6cyclictest1720972-21kworker/u8:2+flush-179:022:45:000
1661363994738,7cyclictest1213033-21systemd-journal21:47:200
166136399471,3cyclictest0-21swapper/019:30:130
1661365994641,4cyclictest1661295-21kworker/u8:2+flush-179:019:10:211
166136399466,39cyclictest151ktimers/023:16:580
1661363994638,6cyclictest1685297-21kworker/u8:3+events_unbound20:30:140
1661363994541,3cyclictest1757900-21kworker/u8:3+flush-179:000:15:240
1661363994541,3cyclictest1757900-21kworker/u8:3+flush-179:000:15:240
1661363994538,6cyclictest1685297-21kworker/u8:3+flush-179:020:40:020
1661363994536,6cyclictest1693354-21kworker/u8:1+flush-179:021:10:140
166136399450,4cyclictest1672683-21apt-get19:45:140
1661365994439,4cyclictest1762673-21kworker/u8:1+flush-179:000:25:241
1661363994438,4cyclictest1746713-21latency_hist23:35:010
1661363994436,6cyclictest1743569-21kworker/u8:2+flush-179:023:30:010
1661365994336,5cyclictest1706666-21kworker/u8:2+events_unbound21:50:241
1661363994336,5cyclictest1667630-21kworker/u8:1+flush-179:019:45:000
1661370994240,1cyclictest0-21swapper/323:31:583
1661363994237,4cyclictest1-21systemd00:35:000
1661363994235,5cyclictest1722535-21latency_hist22:20:020
1661363994231,9cyclictest1213033-21systemd-journal20:45:010
166136399420,5cyclictest1678805-21turbostat20:09:540
1661369994138,2cyclictest0-21swapper/219:51:592
1661365994133,6cyclictest1213033-21systemd-journal22:17:301
166136399410,40cyclictest0-21swapper/022:25:000
1661363994036,3cyclictest1693354-21kworker/u8:1+flush-179:021:25:270
1661363994032,7cyclictest1727539-21/usr/sbin/munin22:35:170
1661363994023,16cyclictest1666071-21cron19:25:000
166136399400,38cyclictest1677218-21apt20:00:000
231999390,4rtkit-daemon23940-21sendmail-mta22:29:040
1661370993937,1cyclictest0-21swapper/320:58:593
166137099390,38cyclictest1685168-21turbostat20:25:013
1661365993933,5cyclictest1665142-21kworker/u8:0+flush-179:019:25:231
1661365993932,5cyclictest1753071-21kworker/u8:1+flush-179:000:05:201
1661363993936,2cyclictest0-21swapper/020:59:590
1661370993832,5cyclictest1762700-21turbostat00:24:593
166137099380,1cyclictest0-21swapper/300:11:003
166136999380,36cyclictest0-21swapper/221:15:592
166136399380,37cyclictest0-21swapper/021:40:000
1661370993735,1cyclictest0-21swapper/320:34:553
1661370993732,4cyclictest1698420-21turbostat21:05:003
166137099370,36cyclictest0-21swapper/320:04:593
1661370993634,1cyclictest0-21swapper/322:31:593
1661370993634,1cyclictest0-21swapper/322:03:593
1661370993633,2cyclictest0-21swapper/320:46:593
166137099360,1cyclictest0-21swapper/300:18:583
166137099360,1cyclictest0-21swapper/300:18:583
1661369993634,1cyclictest0-21swapper/219:44:592
1661369993633,2cyclictest0-21swapper/220:44:552
1661370993533,1cyclictest0-21swapper/323:09:563
1661370993529,5cyclictest1687019-21turbostat20:30:003
1661370993528,5cyclictest1706630-21turbostat21:30:013
166137099350,1cyclictest0-21swapper/300:06:593
1661369993533,1cyclictest0-21swapper/222:40:012
1661369993532,2cyclictest0-21swapper/221:37:592
1661370993432,1cyclictest0-21swapper/319:53:593
1661370993431,2cyclictest0-21swapper/323:39:003
1661369993432,1cyclictest0-21swapper/223:39:592
1661370993331,1cyclictest0-21swapper/321:58:593
1661370993331,1cyclictest0-21swapper/321:51:583
1661370993329,3cyclictest1720944-21turbostat22:15:003
1661369993329,2cyclictest0-21swapper/222:09:002
166136999330,31cyclictest0-21swapper/220:31:592
1661365993327,3cyclictest1685677-21apt-get20:25:111
1661363993329,3cyclictest1739969-21mailstats23:10:220
166136399330,31cyclictest714-21Xorg22:59:580
1661370993230,1cyclictest0-21swapper/323:29:593
1661370993230,1cyclictest0-21swapper/321:19:553
1661370993229,2cyclictest0-21swapper/322:53:003
1661370993227,4cyclictest1666068-21turbostat19:25:003
166136999320,30cyclictest0-21swapper/220:22:582
1661363993210,21cyclictest1682956-21uname20:15:190
1661370993129,1cyclictest0-21swapper/322:43:583
1661370993129,1cyclictest0-21swapper/319:32:003
1661370993126,4cyclictest1701844-21turbostat21:15:003
1661369993129,1cyclictest0-21swapper/221:29:592
1661369993128,2cyclictest0-21swapper/223:52:592
1661369993128,2cyclictest0-21swapper/223:12:002
1661369993128,2cyclictest0-21swapper/221:06:592
1661369993128,2cyclictest0-21swapper/221:06:592
1661369993128,2cyclictest0-21swapper/200:21:592
166136399310,29cyclictest714-21Xorg19:53:590
1661370993028,1cyclictest1725736-21turbostat22:29:593
1661370993028,1cyclictest0-21swapper/321:48:593
1661370993028,1cyclictest0-21swapper/320:09:593
1661370993028,1cyclictest0-21swapper/319:59:593
166137099302,2cyclictest0-21swapper/320:18:593
1661369993028,1cyclictest0-21swapper/221:55:012
1661369993028,1cyclictest0-21swapper/200:19:592
1661369993028,1cyclictest0-21swapper/200:19:592
1661369993027,2cyclictest0-21swapper/220:53:592
1661369993027,2cyclictest0-21swapper/220:35:592
1661369993027,2cyclictest0-21swapper/220:17:592
1661369993027,2cyclictest0-21swapper/220:00:592
1661369993027,2cyclictest0-21swapper/219:18:592
1661369993027,2cyclictest0-21swapper/200:00:132
166136999300,2cyclictest0-21swapper/221:00:122
4577091290,7ptp4l61490irq/134-eno1-TxRx-000:40:003
1661370992927,1cyclictest1672437-21turbostat19:45:003
1661370992927,1cyclictest0-21swapper/323:01:593
1661370992927,1cyclictest0-21swapper/321:05:113
1661370992927,1cyclictest0-21swapper/321:05:113
1661370992927,1cyclictest0-21swapper/320:54:593
1661370992927,1cyclictest0-21swapper/300:26:003
1661370992927,1cyclictest0-21swapper/300:02:583
1661370992926,2cyclictest0-21swapper/323:15:133
1661370992924,4cyclictest1740352-21turbostat23:14:593
1661370992923,5cyclictest1751503-21turbostat23:50:003
1661370992923,4cyclictest1662871-21turbostat19:15:003
1661369992926,2cyclictest0-21swapper/223:05:132
1661369992926,2cyclictest0-21swapper/221:20:132
1661369992926,2cyclictest0-21swapper/220:05:132
166136999290,27cyclictest0-21swapper/223:00:112
166136999290,27cyclictest0-21swapper/220:25:032
166136999290,27cyclictest0-21swapper/219:30:122
166136999290,27cyclictest0-21swapper/200:00:002
166136999290,1cyclictest0-21swapper/222:50:142
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:34:563
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:34:563
4577091280,4ptp4l441ktimers/323:44:553
1661370992827,1cyclictest0-21swapper/323:24:003
1661370992826,1cyclictest0-21swapper/323:52:593
1661370992826,1cyclictest0-21swapper/322:55:133
1661370992826,1cyclictest0-21swapper/319:15:133
166137099280,27cyclictest0-21swapper/322:20:123
166137099280,26cyclictest0-21swapper/321:35:133
1661369992825,2cyclictest0-21swapper/223:15:592
1661369992825,2cyclictest0-21swapper/219:45:132
1661369992825,2cyclictest0-21swapper/200:05:132
166136999280,2cyclictest0-21swapper/220:55:122
166136999280,26cyclictest0-21swapper/220:47:592
166136999280,21cyclictest0-21swapper/222:25:182
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:30:003
4577091270,6ptp4l441ktimers/322:50:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-023:59:563
4577091270,5ptp4l441ktimers/322:19:563
1661370992725,1cyclictest0-21swapper/322:36:593
1661370992725,1cyclictest0-21swapper/319:35:123
166137099270,26cyclictest0-21swapper/320:10:123
166137099270,1cyclictest0-21swapper/322:05:133
1661369992724,2cyclictest0-21swapper/223:43:002
1661369992724,2cyclictest0-21swapper/222:02:592
166136999270,25cyclictest0-21swapper/219:10:592
166136999270,24cyclictest0-21swapper/221:44:552
1661369992623,2cyclictest0-21swapper/223:48:592
1661369992623,2cyclictest0-21swapper/223:33:592
1661369992623,2cyclictest0-21swapper/221:45:112
1661369992623,2cyclictest0-21swapper/200:28:592
166136999260,2cyclictest0-21swapper/200:10:592
166136999260,24cyclictest0-21swapper/220:12:592
166136999260,18cyclictest0-21swapper/221:55:582
1661365992618,6cyclictest1661255-21latency_hist19:10:031
1661370992523,1cyclictest0-21swapper/321:43:593
1661370992523,1cyclictest0-21swapper/320:40:593
1661369992523,1cyclictest0-21swapper/222:19:592
1661369992522,2cyclictest0-21swapper/222:10:122
1661369992522,2cyclictest0-21swapper/221:34:592
1661369992522,2cyclictest0-21swapper/221:34:592
1661369992522,2cyclictest0-21swapper/219:35:592
166136999250,23cyclictest0-21swapper/219:59:592
1661369992422,1cyclictest0-21swapper/223:29:592
166136399244,2cyclictest1661513-21latency_hist19:10:020
1661369992321,1cyclictest0-21swapper/222:34:582
1661369992320,2cyclictest0-21swapper/219:26:592
1661369992320,2cyclictest0-21swapper/200:35:592
1661369992118,2cyclictest0-21swapper/222:47:582
1661369991916,2cyclictest0-21swapper/221:13:592
1661369991916,2cyclictest0-21swapper/219:20:592
1661369991716,1cyclictest0-21swapper/222:57:002
1661369991714,2cyclictest0-21swapper/223:20:132
4577091150,4ptp4l61490irq/134-eno1-TxRx-021:24:093
1661369991310,2cyclictest0-21swapper/200:31:002
166136999129,2cyclictest0-21swapper/222:21:592
16613699960,5cyclictest0-21swapper/222:43:082
16613699930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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