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2026-03-25 - 06:57
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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 Wed Mar 25, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19543789910492,9cyclictest266-21systemd-journal20:40:010
1954379999787,8cyclictest2042575-21latency_hist23:45:021
1954378998982,5cyclictest1965661-21kworker/u8:0+flush-179:019:50:000
1954379998779,6cyclictest266-21systemd-journal20:25:001
1954379998777,7cyclictest3478898-21cups-browsed00:00:001
1954379998777,7cyclictest3478898-21cups-browsed00:00:001
1954379998671,3cyclictest2021577-21kworker/u8:0+events_unbound23:05:011
1954379997971,6cyclictest2031409-21/usr/sbin/munin23:10:221
1954379997871,5cyclictest1991379-21kworker/u8:1+flush-179:021:40:001
1954378997872,4cyclictest2040958-21kworker/u8:0+events_unbound23:40:240
1954379997670,4cyclictest1968575-21kworker/u8:1+events_unbound20:00:261
1954378997672,2cyclictest1987929-21kworker/u8:0+flush-179:021:00:000
1954378997566,7cyclictest2032758-21latency_hist23:15:010
1954379997468,4cyclictest2031206-21kworker/u8:3+events_unbound23:25:241
1954378997365,6cyclictest1957476-21latency_hist19:20:020
1954379997261,9cyclictest2034354-21apt-get23:20:011
1954378997263,6cyclictest1975221-21latency_hist20:15:010
1954378997261,9cyclictest1968852-21apt-get19:55:100
1954379997164,5cyclictest1972856-21kworker/u8:2+flush-179:020:50:221
1954379997164,4cyclictest2008697-21kworker/u8:1+flush-179:022:20:201
1954378997166,4cyclictest2043495-21kworker/u8:2+events_unbound23:50:010
1954378997166,4cyclictest2043495-21kworker/u8:2+events_unbound23:50:000
1954378997164,5cyclictest1999126-21kworker/u8:2+events_unbound22:00:000
1954378997163,5cyclictest2034367-21kworker/u8:0+flush-179:023:20:220
1954378997160,9cyclictest1973376-21latency_hist20:10:020
1954379997057,11cyclictest2046455-21kworker/u8:1+flush-179:000:20:241
1954378997064,4cyclictest1999126-21kworker/u8:2+flush-179:021:45:230
1954378997063,5cyclictest2046455-21kworker/u8:1+flush-179:023:55:230
1954378997063,5cyclictest2046455-21kworker/u8:1+flush-179:023:55:220
1954378997063,5cyclictest2021577-21kworker/u8:0+flush-179:022:45:220
1954378996962,5cyclictest2010661-21kworker/u8:0+events_unbound22:15:010
1954378996962,4cyclictest2008697-21kworker/u8:1+flush-179:022:55:210
1954378996861,5cyclictest1972856-21kworker/u8:2+events_unbound20:30:230
1954379996761,5cyclictest1987929-21kworker/u8:0+flush-179:021:05:011
1954379996760,4cyclictest1952792-21kworker/u8:3+flush-179:019:20:201
1954379996756,9cyclictest1996158-21/usr/sbin/munin21:20:231
1954378996760,5cyclictest1986621-21apt-get20:50:110
1954378996660,4cyclictest1999126-21kworker/u8:2+events_unbound21:34:590
1954379996559,4cyclictest2018480-21kworker/u8:3+events_unbound22:30:251
195437999650,62cyclictest0-21swapper/119:26:001
1954378996559,4cyclictest2008697-21kworker/u8:1+flush-179:022:35:230
1954378996559,4cyclictest1994357-21kworker/u8:3+flush-179:021:20:000
1954379996458,4cyclictest2014715-21kworker/u8:2+flush-179:022:25:231
1954379996455,7cyclictest1972856-21kworker/u8:2+flush-179:020:15:001
1954378996455,7cyclictest1960902-21apt-get19:30:120
1954378996355,6cyclictest1997506-21latency_hist21:25:010
1954379996257,4cyclictest1960883-21kworker/u8:0+flush-179:019:30:201
1954379996256,4cyclictest1985459-21kworker/u8:1+flush-179:020:45:201
1954379996254,6cyclictest2046455-21kworker/u8:1+flush-179:000:15:281
1954378996155,4cyclictest2010661-21kworker/u8:0+flush-179:022:05:230
1954378996154,5cyclictest1962490-21apt-get19:35:120
1954378996153,6cyclictest1959060-21latency_hist19:25:010
1954379996054,4cyclictest2043495-21kworker/u8:2+events_unbound23:50:231
1954379996054,4cyclictest1968575-21kworker/u8:1+events_unbound19:55:141
1954381995956,2cyclictest0-21swapper/222:12:582
1954379995954,4cyclictest2030128-21kworker/u8:2+flush-179:023:32:041
1954379995952,5cyclictest2008697-21kworker/u8:1+flush-179:022:15:041
1954379995950,7cyclictest2012059-21/usr/sbin/munin22:10:251
1954379995950,6cyclictest2007040-21latency_hist21:55:021
1954379995853,4cyclictest2046455-21kworker/u8:1+flush-179:000:05:211
1954379995853,4cyclictest2046455-21kworker/u8:1+flush-179:000:05:201
1954379995849,6cyclictest2008697-21kworker/u8:1+flush-179:022:40:211
1954384995749,6cyclictest2047607-21turbostat00:00:013
1954384995749,6cyclictest2047607-21turbostat00:00:013
1954379995752,4cyclictest1972856-21kworker/u8:2+flush-179:020:40:211
1954379995752,4cyclictest1972856-21kworker/u8:2+flush-179:020:40:211
1954379995752,4cyclictest1933207-21kworker/u8:1+flush-179:019:15:251
1954379995751,4cyclictest266-21systemd-journal19:35:271
1954379995651,4cyclictest1952792-21kworker/u8:3+flush-179:019:40:241
1954379995650,5cyclictest2046455-21kworker/u8:1+events_unbound00:15:001
1954379995650,5cyclictest1972856-21kworker/u8:2+flush-179:020:30:271
1954379995648,5cyclictest2021577-21kworker/u8:0+events_unbound22:45:141
1954378995648,6cyclictest2049496-21/usr/sbin/munin00:05:240
1954378995648,6cyclictest2049496-21/usr/sbin/munin00:05:230
1954378995647,8cyclictest2038052-21apt-get23:30:110
1954379995550,4cyclictest2007277-21kworker/u8:0+events_unbound21:55:141
1954379995550,4cyclictest1999126-21kworker/u8:2+flush-179:021:45:011
1954379995549,5cyclictest2008697-21kworker/u8:1+events_unbound22:54:591
1954379995546,7cyclictest1976813-21latency_hist20:20:011
1954378995550,4cyclictest2014715-21kworker/u8:2+flush-179:022:25:260
1954379995348,4cyclictest1994357-21kworker/u8:3+flush-179:021:30:011
1954379995348,3cyclictest2050844-21kworker/u8:0+flush-179:000:25:221
1954379995347,4cyclictest1970168-21kworker/u8:0+events_unbound20:05:211
1954379995344,7cyclictest2021640-21latency_hist22:40:011
1954379995334,5cyclictest2059297-21kworker/u8:1+flush-179:000:35:221
1954378995345,6cyclictest1992728-21latency_hist21:10:010
4577091520,7ptp4l61490irq/134-eno1-TxRx-022:10:003
1954378995248,3cyclictest1999126-21kworker/u8:2+events_unbound21:45:010
1954378995247,4cyclictest2050844-21kworker/u8:0+flush-179:000:10:220
1954378995246,5cyclictest1977067-21kworker/u8:1+flush-179:020:20:220
1954384995149,1cyclictest0-21swapper/322:54:593
1954378995146,4cyclictest2043495-21kworker/u8:2+flush-179:023:50:200
1954378995145,4cyclictest2013920-21apt-get22:15:110
1954379995045,4cyclictest1991379-21kworker/u8:1+events_unbound21:10:141
1954379994944,4cyclictest2008697-21kworker/u8:1+flush-179:022:04:541
1954379994944,4cyclictest1994357-21kworker/u8:3+flush-179:021:30:211
1954379994942,4cyclictest1947990-21kworker/u8:0+flush-179:019:10:221
1954378994942,5cyclictest1999126-21kworker/u8:2+flush-179:021:50:230
4577091480,14ptp4l61490irq/134-eno1-TxRx-019:10:003
1954379994841,5cyclictest1968575-21kworker/u8:1+flush-179:019:55:001
1954378994843,3cyclictest714-21Xorg19:25:590
1954378994839,6cyclictest2031206-21kworker/u8:3+flush-179:023:25:210
1954379994743,3cyclictest2050844-21kworker/u8:0+flush-179:000:30:191
1954379994743,3cyclictest2043495-21kworker/u8:2+events_unbound00:04:021
1954379994741,4cyclictest1965661-21kworker/u8:0+events_unbound19:45:181
1954378994743,3cyclictest1971829-21systemd-run20:05:000
1954384994644,1cyclictest0-21swapper/323:07:593
1954379994641,4cyclictest2010661-21kworker/u8:0+flush-179:022:05:221
1954379994641,3cyclictest2030128-21kworker/u8:2+flush-179:023:35:161
1954378994639,5cyclictest2050844-21kworker/u8:0+flush-179:000:30:200
1954378994638,7cyclictest1975209-21kworker/u8:0+flush-179:020:20:000
1954379994540,4cyclictest2040958-21kworker/u8:0+events_unbound23:45:131
1954379994540,4cyclictest2040958-21kworker/u8:0+events_unbound23:45:131
1954378994541,3cyclictest266-21systemd-journal00:04:000
1954378994540,3cyclictest2010236-21latency_hist22:05:010
1954378994534,9cyclictest266-21systemd-journal20:30:000
1954384994442,1cyclictest0-21swapper/322:18:003
1954379994435,7cyclictest266-21systemd-journal23:24:281
1954378994441,2cyclictest2031206-21kworker/u8:3+events_unbound23:15:230
1954384994337,5cyclictest1995929-21turbostat21:20:003
1954379994337,4cyclictest1993767-21kworker/u8:0+flush-179:021:15:201
1954378994338,3cyclictest1933207-21kworker/u8:1+flush-179:019:44:550
1954381994240,1cyclictest0-21swapper/220:44:592
1954381994240,1cyclictest0-21swapper/220:44:592
1954379994236,5cyclictest2030128-21kworker/u8:2+flush-179:023:05:261
195437999423,32cyclictest1978670-21apt-get20:25:131
1954378994233,7cyclictest1994311-21latency_hist21:15:010
1954381994138,2cyclictest0-21swapper/221:40:592
1954381994138,2cyclictest0-21swapper/220:57:592
195437999410,39cyclictest714-21Xorg20:56:591
1954378994137,3cyclictest484-21dbus-daemon22:45:000
1954378994136,4cyclictest1994357-21kworker/u8:3+flush-179:021:25:160
1954378994136,4cyclictest1966991-21kworker/u8:2+flush-179:019:50:270
1954378994128,11cyclictest0-21swapper/021:40:000
195438499400,38cyclictest2049268-21turbostat00:05:003
1954379994036,3cyclictest1999126-21kworker/u8:2+flush-179:021:45:221
1954378994036,3cyclictest1986403-21systemd-run20:50:000
1954378994033,5cyclictest2008697-21kworker/u8:1+flush-179:023:02:010
1954378994031,7cyclictest2015529-21apt-get22:20:100
1954378994029,9cyclictest2054294-21apt-get00:20:130
195438199390,36cyclictest0-21swapper/200:21:592
1954379993934,4cyclictest1991379-21kworker/u8:1+flush-179:021:05:231
1954378993934,4cyclictest2036245-21kworker/u8:1+events_unbound23:35:270
1954384993836,1cyclictest0-21swapper/322:25:583
1954381993835,2cyclictest0-21swapper/223:23:582
195438199380,36cyclictest0-21swapper/223:03:592
195438199380,36cyclictest0-21swapper/221:46:592
1954381993734,2cyclictest0-21swapper/222:28:592
1954381993734,2cyclictest0-21swapper/221:01:592
195437999370,1cyclictest0-21swapper/122:56:581
1954378993731,5cyclictest2059439-21cpuspeed_turbos00:35:140
1954378993731,5cyclictest1991147-21munin-plugin-st21:05:000
1954378993730,5cyclictest2018480-21kworker/u8:3+flush-179:022:30:170
1954384993634,1cyclictest0-21swapper/319:42:583
1954384993634,1cyclictest0-21swapper/319:17:003
195438499360,1cyclictest0-21swapper/319:45:593
1954381993633,2cyclictest0-21swapper/222:17:002
1954381993633,2cyclictest0-21swapper/221:28:592
1954378993630,4cyclictest1972856-21kworker/u8:2+flush-179:020:40:160
1954378993630,4cyclictest1972856-21kworker/u8:2+flush-179:020:40:160
1954384993533,1cyclictest0-21swapper/320:15:593
195438499350,34cyclictest0-21swapper/320:30:003
195438499350,1cyclictest0-21swapper/323:44:003
1954381993533,1cyclictest0-21swapper/219:29:592
1954381993533,1cyclictest0-21swapper/200:30:002
1954378993530,4cyclictest1947990-21kworker/u8:0+flush-179:019:10:260
1954384993433,1cyclictest0-21swapper/323:18:583
1954384993432,1cyclictest0-21swapper/319:55:003
1954384993432,1cyclictest0-21swapper/319:38:593
1954384993429,4cyclictest2002272-21turbostat21:40:003
1954384993428,5cyclictest1962246-21turbostat19:35:013
1954381993430,2cyclictest0-21swapper/219:24:002
1954378993431,2cyclictest0-21swapper/023:08:590
1954378993429,4cyclictest2025908-21phc2sys-jitter22:50:250
1954384993331,1cyclictest0-21swapper/321:23:593
1954381993330,2cyclictest0-21swapper/222:00:592
195438199330,2cyclictest0-21swapper/221:07:002
1954384993230,1cyclictest0-21swapper/320:47:593
1954384993230,1cyclictest0-21swapper/320:42:593
1954384993230,1cyclictest0-21swapper/320:42:593
1954384993230,1cyclictest0-21swapper/320:14:593
1954384993230,1cyclictest0-21swapper/300:24:003
1954381993230,1cyclictest0-21swapper/219:55:002
1954381993229,2cyclictest0-21swapper/223:51:582
1954381993229,2cyclictest0-21swapper/220:38:592
1954379993227,4cyclictest1972856-21kworker/u8:2+flush-179:020:35:251
1954378993227,4cyclictest2046455-21kworker/u8:1+flush-179:000:19:550
4577091310,12ptp4l61490irq/134-eno1-TxRx-022:25:003
1954384993129,1cyclictest0-21swapper/321:59:593
1954384993129,1cyclictest0-21swapper/321:09:593
1954384993129,1cyclictest0-21swapper/320:53:003
1954384993126,4cyclictest2032768-21turbostat23:15:003
1954381993129,1cyclictest0-21swapper/222:45:002
1954381993129,1cyclictest0-21swapper/220:50:002
1954381993128,2cyclictest0-21swapper/223:40:592
1954381993128,2cyclictest0-21swapper/221:57:592
195437899311,2cyclictest0-21swapper/000:25:040
231999300,17rtkit-daemon1951292-21kworker/1:1+pm19:05:371
1954384993028,1cyclictest0-21swapper/321:10:593
1954384993027,2cyclictest1991161-21turbostat21:05:013
1954384993027,2cyclictest0-21swapper/323:47:003
1954384993027,2cyclictest0-21swapper/323:46:593
1954384993024,5cyclictest2000681-21turbostat21:34:593
195438499300,29cyclictest0-21swapper/322:30:133
1954381993027,2cyclictest0-21swapper/221:10:592
195438199300,2cyclictest0-21swapper/220:10:032
195438199300,28cyclictest0-21swapper/223:15:112
1954384992927,1cyclictest0-21swapper/322:10:153
1954384992924,4cyclictest2050853-21turbostat00:10:013
1954384992924,4cyclictest2050853-21turbostat00:10:003
1954381992927,1cyclictest0-21swapper/220:10:002
1954381992927,1cyclictest0-21swapper/200:05:122
1954381992927,1cyclictest0-21swapper/200:05:122
1954381992926,2cyclictest0-21swapper/219:55:132
195438199290,2cyclictest0-21swapper/222:20:132
195438199290,27cyclictest0-21swapper/223:45:032
195438199290,27cyclictest0-21swapper/223:45:022
195438199290,27cyclictest0-21swapper/223:10:132
195438199290,27cyclictest0-21swapper/222:45:122
195438199290,27cyclictest0-21swapper/221:35:122
195438199290,27cyclictest0-21swapper/221:30:132
195438199290,27cyclictest0-21swapper/221:20:132
195438199290,27cyclictest0-21swapper/221:15:122
195438199290,27cyclictest0-21swapper/220:30:152
195438199290,27cyclictest0-21swapper/220:25:132
195438199290,27cyclictest0-21swapper/200:15:142
195438199290,1cyclictest0-21swapper/200:00:112
1954384992826,1cyclictest0-21swapper/323:35:143
1954384992826,1cyclictest0-21swapper/323:30:143
1954384992826,1cyclictest0-21swapper/320:55:593
1954384992826,1cyclictest0-21swapper/320:05:133
1954384992826,1cyclictest0-21swapper/319:10:133
1954384992826,1cyclictest0-21swapper/300:10:133
1954384992825,2cyclictest0-21swapper/322:35:593
195438499280,5cyclictest1981603-21turbostat20:35:003
195438499280,27cyclictest0-21swapper/323:54:593
195438499280,27cyclictest0-21swapper/323:25:143
195438499280,26cyclictest0-21swapper/323:00:123
195438499280,26cyclictest0-21swapper/320:35:143
1954381992825,2cyclictest0-21swapper/219:40:122
4577091270,6ptp4l441ktimers/322:44:593
4577091270,6ptp4l441ktimers/320:05:003
1954384992725,1cyclictest0-21swapper/300:36:593
195438499270,26cyclictest0-21swapper/320:21:593
1954381992724,2cyclictest0-21swapper/222:55:592
1954381992724,2cyclictest0-21swapper/219:11:592
195438199270,24cyclictest0-21swapper/222:54:542
195438199270,1cyclictest0-21swapper/223:05:132
4577091260,6ptp4l441ktimers/323:24:553
4577091260,6ptp4l441ktimers/321:55:013
4577091260,5ptp4l441ktimers/300:35:003
4577091260,5ptp4l441ktimers/300:30:023
1954384992624,1cyclictest0-21swapper/322:49:553
1954384992624,1cyclictest0-21swapper/319:57:593
195438499260,1cyclictest0-21swapper/319:26:583
1954381992623,2cyclictest0-21swapper/221:50:142
195438199260,24cyclictest0-21swapper/220:23:592
195438199260,24cyclictest0-21swapper/219:35:002
4577091250,6ptp4l61490irq/134-eno1-TxRx-000:20:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:00:003
4577091250,5ptp4l61490irq/134-eno1-TxRx-021:49:553
4577091250,5ptp4l61490irq/134-eno1-TxRx-021:30:013
4577091250,5ptp4l441ktimers/321:45:013
1954381992523,1cyclictest0-21swapper/222:30:132
1954381992522,2cyclictest0-21swapper/223:38:592
1954381992522,2cyclictest0-21swapper/200:35:592
1954381992522,2cyclictest0-21swapper/200:11:002
4577091240,5ptp4l61490irq/134-eno1-TxRx-022:04:563
1954381992422,1cyclictest0-21swapper/223:29:592
4577091230,4ptp4l441ktimers/319:24:553
1954381992321,1cyclictest0-21swapper/222:07:592
1954381992321,1cyclictest0-21swapper/220:55:002
1954381992119,1cyclictest0-21swapper/219:39:592
195437899213,13cyclictest1954253-21latency_hist19:10:010
1954381992017,2cyclictest0-21swapper/220:16:592
1954381992017,2cyclictest0-21swapper/219:15:592
1954381992017,2cyclictest0-21swapper/200:35:002
1954381991916,2cyclictest0-21swapper/219:46:592
1954381991816,1cyclictest0-21swapper/223:35:002
1954381991714,2cyclictest0-21swapper/220:00:592
19543819997,1cyclictest0-21swapper/223:55:152
19543819997,1cyclictest0-21swapper/223:55:142
19543819990,7cyclictest0-21swapper/222:39:402
19543819920,1cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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