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2026-05-08 - 11:09
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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 May 08, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18938409910093,5cyclictest1908381-21kworker/u8:2+events_unbound20:10:000
1893844999284,6cyclictest1968061-21apt-get23:00:031
1893840999084,3cyclictest1988226-21kworker/u8:1+flush-179:000:20:010
1893844998980,6cyclictest1903597-21latency_hist19:40:021
1893844998881,5cyclictest1948086-21kworker/u8:3+flush-179:022:00:001
1893840998578,4cyclictest1958479-21kworker/u8:0+events_unbound22:50:250
1893844998170,8cyclictest1986066-21latency_hist23:55:011
1893840998172,6cyclictest1983130-21kworker/u8:0+events_unbound23:45:140
1893840998110,69cyclictest1937571-21unin-run21:25:000
1893840998068,4cyclictest1988226-21kworker/u8:1+events_unbound00:05:000
1893840998063,6cyclictest1986101-21kworker/u8:3+flush-179:000:10:150
1893840997972,4cyclictest1908381-21kworker/u8:2+events_unbound20:55:140
1893840997971,5cyclictest1961641-21kworker/u8:1+events_unbound22:55:150
1893840997873,4cyclictest1911587-21kworker/u8:1+flush-179:020:10:250
1893840997867,9cyclictest1986323-21apt-get23:55:130
1893840997771,4cyclictest1911587-21kworker/u8:1+flush-179:020:20:010
1893840997770,5cyclictest1958479-21kworker/u8:0+events_unbound22:40:140
1893840997668,5cyclictest1945521-21kworker/u8:1+flush-179:022:15:280
1893840997567,5cyclictest1926415-21kworker/u8:0+flush-179:021:45:210
1893840997564,8cyclictest1981487-21cat23:40:020
1893840997467,5cyclictest1971482-21latency_hist23:10:010
1893840997464,8cyclictest1908585-21/usr/sbin/munin19:55:240
1893844997363,8cyclictest1898803-21apt-get19:25:121
1893844997362,9cyclictest1895606-21apt-get19:15:141
1893850997270,1cyclictest0-21swapper/322:49:593
1893840997266,4cyclictest1874457-21kworker/u8:1+flush-179:019:20:010
1893840997265,5cyclictest1958479-21kworker/u8:0+events_unbound22:45:240
1893840997262,7cyclictest1921080-21kworker/u8:1+flush-179:020:40:140
1893844997061,7cyclictest1948921-21/usr/sbin/munin22:00:241
1893844997056,11cyclictest1990944-21kworker/u8:2+flush-179:000:15:011
1893840997064,4cyclictest1903586-21kworker/u8:0+flush-179:019:45:220
1893840997061,7cyclictest1988226-21kworker/u8:1+flush-179:000:10:010
1893840997057,5cyclictest1943195-21kworker/u8:2+flush-179:022:25:140
1893840996964,3cyclictest1926416-21kworker/u8:3+events_unbound21:25:250
1893840996963,4cyclictest1908381-21kworker/u8:2+flush-179:020:39:550
1893840996961,6cyclictest1960074-21latency_hist22:35:010
1893840996961,6cyclictest1892276-21kworker/u8:2+events_unbound19:35:020
1893840996961,5cyclictest1966476-21kworker/u8:3+flush-179:023:25:140
1893844996857,7cyclictest1908381-21kworker/u8:2+flush-179:020:40:001
1893840996861,5cyclictest1998916-21kworker/u8:2+events_unbound00:40:000
1893840996854,5cyclictest1958536-21kworker/u8:3+events_unbound22:35:160
1893840996757,7cyclictest1921080-21kworker/u8:1+flush-179:020:45:200
1893840996659,5cyclictest1926416-21kworker/u8:3+flush-179:021:05:210
1893840996555,7cyclictest1976300-21kworker/u8:1+flush-179:023:50:170
1893844996451,10cyclictest1213033-21systemd-journal23:45:011
1893840996459,3cyclictest191rcuc/019:35:000
1893840996457,4cyclictest1874457-21kworker/u8:1+events_unbound19:20:150
1893844996355,6cyclictest1932246-21apt-get21:10:001
1893840996356,5cyclictest1917915-21kworker/u8:0+flush-179:020:30:210
1893840996355,6cyclictest1945521-21kworker/u8:1+flush-179:022:05:210
1893840996355,6cyclictest1945521-21kworker/u8:1+flush-179:022:05:210
1893840996353,6cyclictest1917915-21kworker/u8:0+events_unbound20:25:190
1893840996157,3cyclictest1892276-21kworker/u8:2+flush-179:019:25:260
1893840996151,4cyclictest1926415-21kworker/u8:0+events_unbound21:05:000
1893840996150,8cyclictest1213033-21systemd-journal00:35:010
1893844996046,11cyclictest1213033-21systemd-journal20:56:051
189384499600,1cyclictest0-21swapper/121:53:591
1893840996054,5cyclictest1986101-21kworker/u8:3+flush-179:000:20:230
1893840996054,4cyclictest1930693-21kworker/u8:1+flush-179:021:10:190
1893840996054,4cyclictest1926416-21kworker/u8:3+flush-179:021:35:140
1893840996053,5cyclictest1948086-21kworker/u8:3+flush-179:022:00:200
1893840996053,5cyclictest1908381-21kworker/u8:2+events_unbound20:00:130
1893844995953,4cyclictest1213033-21systemd-journal20:28:061
1893844995944,6cyclictest1213033-21systemd-journal22:53:111
1893840995953,5cyclictest1971505-21kworker/u8:2+events_unbound23:15:010
1893840995950,7cyclictest1926416-21kworker/u8:3+events_unbound20:50:260
1893840995950,6cyclictest1926416-21kworker/u8:3+flush-179:021:15:210
1893840995752,3cyclictest1942554-21kworker/u8:1+events_unbound21:40:150
1893844995645,9cyclictest1963525-21apt-get22:45:111
1893844995645,8cyclictest1213033-21systemd-journal21:40:001
1893840995641,6cyclictest1976251-21kworker/u8:0+events_unbound23:30:220
1893844995548,5cyclictest1989324-21latency_hist00:05:011
1893840995550,4cyclictest1874457-21kworker/u8:1+flush-179:019:10:260
1893844995410,17cyclictest1939188-21latency_hist21:30:001
1893840995449,4cyclictest1945521-21kworker/u8:1+flush-179:022:10:210
1893840995446,6cyclictest1926415-21kworker/u8:0+flush-179:021:55:000
1893840995445,4cyclictest1906744-21kworker/u8:1+events_unbound19:50:120
1893844995334,16cyclictest1966476-21kworker/u8:3+flush-179:023:09:591
1893844995244,7cyclictest1950280-21apt-get22:05:031
1893844995244,7cyclictest1950280-21apt-get22:05:031
1893840995246,5cyclictest1926415-21kworker/u8:0+flush-179:021:30:250
1893844995141,6cyclictest1916581-21apt-get20:20:121
4577091500,14ptp4l441ktimers/319:10:013
1893844995047,2cyclictest714-21Xorg00:34:581
1893844995043,5cyclictest1901730-21apt-get19:35:011
1893840995045,4cyclictest1966476-21kworker/u8:3+flush-179:023:20:250
1893840995045,4cyclictest1966476-21kworker/u8:3+flush-179:023:20:250
1893844994945,3cyclictest714-21Xorg23:24:591
1893844994945,3cyclictest714-21Xorg23:24:581
1893844994913,8cyclictest1903845-21apt-get19:40:121
1893840994941,6cyclictest1986101-21kworker/u8:3+events_unbound00:25:200
1893844994839,6cyclictest1908381-21kworker/u8:2+flush-179:020:45:231
1893849994744,2cyclictest0-21swapper/222:38:592
1893849994744,2cyclictest0-21swapper/222:03:592
1893844994740,5cyclictest1986101-21kworker/u8:3+flush-179:000:20:261
1893844994740,5cyclictest1966702-21http22:55:131
1893844994732,13cyclictest1987695-40mandb00:00:001
189384099471,44cyclictest1969899-21idleruntime-cro23:05:000
1893844994640,4cyclictest1958479-21kworker/u8:0+events_unbound22:30:011
1893844994610,24cyclictest1943904-21latency_hist21:45:011
1893840994640,5cyclictest1926415-21kworker/u8:0+flush-179:021:55:190
1893840994540,4cyclictest1976251-21kworker/u8:0+flush-179:023:36:100
1893844994436,6cyclictest0-21swapper/119:55:131
1893844994333,7cyclictest1903586-21kworker/u8:0+flush-179:019:45:171
1893844994329,10cyclictest1910706-21kworker/u8:0+flush-179:020:05:211
1893840994333,8cyclictest1213033-21systemd-journal19:44:560
189385099420,41cyclictest0-21swapper/323:09:593
1893844994237,2cyclictest1999129-21apt-get00:35:151
1893844994236,4cyclictest1984517-21systemd-run23:50:011
1893844994235,5cyclictest1953960-21apt-get22:15:141
1893844994216,10cyclictest714-21Xorg22:42:591
1893844994214,12cyclictest714-21Xorg22:39:591
1893844994213,27cyclictest714-21Xorg19:24:581
1893840994235,5cyclictest1908381-21kworker/u8:2+events_unbound20:20:130
1893840994234,6cyclictest1213033-21systemd-journal23:16:100
189384099421,39cyclictest714-21Xorg22:24:590
189384999410,38cyclictest0-21swapper/219:59:552
1893844994138,2cyclictest714-21Xorg21:22:001
1893844994137,3cyclictest1926416-21kworker/u8:3+flush-179:021:30:231
1893844994135,4cyclictest1-21systemd20:20:001
1893844994133,6cyclictest1910706-21kworker/u8:0+flush-179:020:00:201
1893844994131,7cyclictest1908381-21kworker/u8:2+flush-179:020:15:011
189385099400,4cyclictest1916314-21turbostat20:20:013
189385099400,39cyclictest1947089-21turbostat21:55:003
189385099400,33cyclictest1914730-21turbostat20:14:593
1893844994035,3cyclictest1994108-21munin-plugin-st00:19:591
1893844994033,5cyclictest1990909-21latency_hist00:10:011
1893844994031,7cyclictest1213033-21systemd-journal21:18:061
1893850993934,4cyclictest1939134-21turbostat21:30:003
189385099390,38cyclictest1992502-21turbostat00:15:013
189385099390,37cyclictest1955301-21turbostat22:20:003
189384499398,16cyclictest0-21swapper/119:50:251
1893844993934,3cyclictest1981091-21systemd-run23:40:011
1893844993931,6cyclictest1924279-21latency_hist20:45:011
1893844993913,11cyclictest714-21Xorg21:48:581
189384499390,3cyclictest1958728-21/usr/sbin/munin22:30:151
189384499390,10cyclictest1977861-21awk23:30:001
1893850993836,1cyclictest0-21swapper/321:44:593
1893850993834,3cyclictest1930660-21turbostat21:05:003
189384999380,36cyclictest0-21swapper/221:43:592
1893844993814,9cyclictest714-21Xorg19:13:591
1893844993814,9cyclictest1927042-21run-parts20:50:231
1893844993814,8cyclictest714-21Xorg21:04:001
189384499380,37cyclictest714-21Xorg23:15:001
1893850993733,2cyclictest0-21swapper/319:21:003
1893850993730,5cyclictest1924293-21turbostat20:49:553
189385099370,36cyclictest0-21swapper/323:50:593
189384999370,35cyclictest0-21swapper/223:34:552
189384999370,2cyclictest0-21swapper/222:13:592
189384999370,2cyclictest0-21swapper/219:38:582
1893844993731,4cyclictest1997403-21ls00:30:011
1893844993714,7cyclictest1920033-21df20:30:141
1893850993634,1cyclictest0-21swapper/323:59:553
1893850993633,2cyclictest0-21swapper/300:29:543
1893850993630,5cyclictest1929049-21turbostat20:59:593
189385099360,35cyclictest0-21swapper/323:17:003
189385099360,35cyclictest0-21swapper/322:41:593
189385099360,35cyclictest0-21swapper/322:03:593
189385099360,1cyclictest0-21swapper/319:55:593
189385099360,1cyclictest0-21swapper/300:35:593
1893849993633,2cyclictest0-21swapper/220:02:002
189384999360,1cyclictest0-21swapper/222:58:592
189384999360,1cyclictest0-21swapper/220:10:582
189384999360,1cyclictest0-21swapper/200:08:592
1893844993628,6cyclictest1973307-21/usr/sbin/munin23:15:171
4577091350,6ptp4l441ktimers/322:15:003
1893850993533,1cyclictest0-21swapper/323:26:583
1893850993533,1cyclictest0-21swapper/321:06:583
1893849993533,1cyclictest0-21swapper/219:50:002
1893849993532,2cyclictest0-21swapper/221:00:002
189384999350,1cyclictest0-21swapper/222:44:592
189384999350,1cyclictest0-21swapper/221:34:582
1893850993432,1cyclictest0-21swapper/300:01:593
189384499341,31cyclictest1932729-21apt-get21:10:031
1893844993411,7cyclictest908065-21snmpd23:31:281
4577091330,3ptp4l61490irq/134-eno1-TxRx-023:40:133
1893850993331,1cyclictest0-21swapper/320:21:583
1893850993331,1cyclictest0-21swapper/319:18:593
1893849993330,2cyclictest0-21swapper/223:04:552
1893849993330,2cyclictest0-21swapper/220:41:002
1893844993312,7cyclictest1952921-21kernelversion22:10:201
1893850993230,1cyclictest0-21swapper/322:09:553
1893850993230,1cyclictest0-21swapper/322:09:553
1893850993227,4cyclictest1969900-21turbostat23:05:003
1893850993227,4cyclictest1911551-21turbostat20:05:003
1893850993226,5cyclictest1973083-21turbostat23:15:003
1893849993229,2cyclictest0-21swapper/223:38:592
1893849993223,8cyclictest0-21swapper/223:40:042
4577091310,6ptp4l441ktimers/322:59:563
1893849993128,2cyclictest0-21swapper/219:53:582
1893849993126,4cyclictest0-21swapper/223:20:132
1893849993126,4cyclictest0-21swapper/223:20:122
1893849993125,5cyclictest0-21swapper/222:05:032
1893849993125,5cyclictest0-21swapper/222:05:022
1893849993125,5cyclictest0-21swapper/200:10:122
1893849993124,6cyclictest0-21swapper/223:45:132
1893844993121,6cyclictest714-21Xorg22:21:591
4577091300,7ptp4l441ktimers/322:00:003
4577091300,7ptp4l441ktimers/321:25:003
1893850993028,1cyclictest0-21swapper/323:31:593
1893850993028,1cyclictest0-21swapper/320:44:593
1893850993028,1cyclictest0-21swapper/319:54:543
1893850993028,1cyclictest0-21swapper/300:31:593
1893850993024,4cyclictest1911551-21turbostat20:09:553
1893849993028,1cyclictest0-21swapper/222:54:592
1893849993027,2cyclictest0-21swapper/223:25:132
1893849993027,2cyclictest0-21swapper/219:34:002
1893849993026,2cyclictest0-21swapper/220:32:592
189384999300,2cyclictest0-21swapper/200:00:012
189384999300,29cyclictest0-21swapper/200:00:132
1893840993026,3cyclictest0-21swapper/019:10:020
1893850992927,1cyclictest0-21swapper/320:32:003
1893850992927,1cyclictest0-21swapper/319:30:123
1893850992924,3cyclictest1976277-21turbostat23:25:003
1893850992924,3cyclictest1976277-21turbostat23:25:003
189385099290,27cyclictest0-21swapper/322:25:113
189385099290,27cyclictest0-21swapper/322:20:123
189385099290,27cyclictest0-21swapper/320:50:143
189385099290,1cyclictest0-21swapper/319:25:143
1893849992927,1cyclictest0-21swapper/221:04:582
1893849992926,2cyclictest0-21swapper/223:15:132
1893849992926,2cyclictest0-21swapper/221:55:122
1893849992926,2cyclictest0-21swapper/221:50:142
1893849992926,2cyclictest0-21swapper/220:35:132
1893849992926,2cyclictest0-21swapper/220:24:562
1893849992926,2cyclictest0-21swapper/219:16:592
189384999290,28cyclictest0-21swapper/221:25:132
189384999290,27cyclictest0-21swapper/221:35:132
189384999290,27cyclictest0-21swapper/221:20:032
189384999290,27cyclictest0-21swapper/221:05:132
189384999290,27cyclictest0-21swapper/200:25:122
189384999290,27cyclictest0-21swapper/200:15:132
4577091280,7ptp4l441ktimers/319:45:003
1893850992826,1cyclictest0-21swapper/320:36:583
1893850992826,1cyclictest0-21swapper/320:28:593
1893850992825,2cyclictest0-21swapper/321:10:023
1893850992825,2cyclictest0-21swapper/319:35:133
189385099280,27cyclictest0-21swapper/322:35:133
1893849992825,2cyclictest0-21swapper/222:23:592
189384999280,26cyclictest0-21swapper/221:19:592
189384999280,26cyclictest0-21swapper/221:10:102
189384999280,26cyclictest0-21swapper/219:20:132
189384999280,21cyclictest0-21swapper/220:05:122
4577091270,7ptp4l61490irq/134-eno1-TxRx-019:50:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:40:013
4577091270,6ptp4l441ktimers/321:35:003
4577091270,6ptp4l441ktimers/300:20:003
4577091270,5ptp4l441ktimers/322:30:013
4577091270,5ptp4l441ktimers/300:09:553
1893850992725,1cyclictest0-21swapper/322:53:593
189385099270,26cyclictest0-21swapper/321:48:593
189385099270,1cyclictest0-21swapper/323:45:593
189385099270,1cyclictest0-21swapper/319:13:583
1893849992724,2cyclictest0-21swapper/219:29:552
1893849992724,2cyclictest0-21swapper/219:10:592
189384999270,25cyclictest0-21swapper/222:19:552
189384999270,24cyclictest0-21swapper/220:54:552
4577091260,5ptp4l441ktimers/321:39:553
1893849992623,2cyclictest0-21swapper/222:32:592
1893849992620,5cyclictest0-21swapper/223:05:592
4577091250,4ptp4l441ktimers/321:19:563
1893849992522,2cyclictest0-21swapper/220:45:132
1893849992522,2cyclictest0-21swapper/200:36:592
1893849992521,2cyclictest0-21swapper/200:33:582
189384999250,2cyclictest0-21swapper/223:52:582
1893849992421,2cyclictest0-21swapper/200:22:592
1893849992316,6cyclictest0-21swapper/219:45:002
1893844992317,5cyclictest0-21swapper/119:10:011
1893849992219,2cyclictest0-21swapper/220:25:132
1893849992017,2cyclictest0-21swapper/222:25:592
1893850991816,1cyclictest0-21swapper/300:22:583
1893849991816,1cyclictest0-21swapper/220:16:592
1893849991311,1cyclictest0-21swapper/222:48:592
18938499996,2cyclictest0-21swapper/223:11:582
18938499970,6cyclictest0-21swapper/221:47:132
18938499920,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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