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2026-04-12 - 12:23
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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
Characteristics of the 792 highest latencies:
System rackeslot2.osadl.org (updated Sun Apr 12, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190102921590,1sleep01901026-21sed20:41:000
190489421130,2sleep30-21swapper/320:41:033
21090562890,2sleep0191rcu_preempt23:01:520
21090562890,2sleep0191rcu_preempt23:01:520
19191482420,1sleep20-21swapper/220:55:572
21624372340,2sleep1341rcuc/123:38:411
21901442310,2sleep02190148-21kthreadcore23:56:040
1784180992421,1cyclictest0-21swapper/222:00:002
1784178992417,6cyclictest2208520-21systemd-run00:10:020
1784180992321,1cyclictest0-21swapper/222:45:572
1784178992314,5cyclictest2167594-21kthreadcore23:41:040
383433398210,3rtkit-daemon3851705-21mta-sts-daemon21:28:571
1784178992111,6cyclictest0-21swapper/021:10:000
1784180992018,1cyclictest0-21swapper/223:40:012
1784180992013,2cyclictest0-21swapper/200:10:022
1784179992017,2cyclictest2245874-21munin-plugin-st00:35:001
1784179992016,2cyclictest0-21swapper/100:25:551
1784179992012,3cyclictest2170387-21cron23:45:001
1784178992010,4cyclictest2070867-21mailstats22:36:070
383433398190,3rtkit-daemon3851705-21mta-sts-daemon19:31:150
2649091190,7phc2sys0-21swapper/321:35:553
22030942190,2sleep30-21swapper/300:06:013
1784180991916,1cyclictest0-21swapper/200:35:002
1784180991915,2cyclictest0-21swapper/220:10:002
1784180991911,2cyclictest0-21swapper/223:56:012
1784179991916,2cyclictest2125424-21systemd-run23:15:001
1784179991916,2cyclictest2125424-21systemd-run23:15:001
1784179991916,2cyclictest1937823-21aten_repower_en21:10:561
178417999191,4cyclictest0-21swapper/120:20:521
1784178991916,2cyclictest2065088-21dump-pmu-power22:35:000
1784178991916,2cyclictest1792043-21kthreadcore19:15:020
1784178991914,4cyclictest2148661-21cpu23:30:550
1784178991914,4cyclictest1950197-21missed_timers21:16:050
1784178991913,5cyclictest2095744-21aten_repower_po22:55:550
1784178991912,6cyclictest2241707-21kthreadcore00:31:040
178418099182,7cyclictest0-21swapper/222:10:002
1784180991816,1cyclictest0-21swapper/219:15:012
1784180991815,1cyclictest0-21swapper/223:30:592
1784180991815,1cyclictest0-21swapper/223:20:002
1784180991815,1cyclictest0-21swapper/200:05:012
178417999189,4cyclictest0-21swapper/122:05:021
1784179991815,2cyclictest3824565-21in:imuxsock19:50:011
1784179991815,2cyclictest0-21swapper/120:10:001
1784179991815,2cyclictest0-21swapper/100:10:011
1784179991814,3cyclictest1897314-21kthreadcore20:36:031
178417899187,6cyclictest0-21swapper/022:20:550
178417899187,6cyclictest0-21swapper/022:20:010
178417899185,7cyclictest2137583-21kthreadcore23:21:020
1784178991815,2cyclictest2087511-21idleruntime-cro22:50:000
1784178991815,2cyclictest2027462-21munin-plugin-st22:10:020
1784178991815,2cyclictest1997356-21/usr/sbin/munin21:50:010
1784178991815,2cyclictest1290-21dbus-daemon00:25:010
1784178991815,2cyclictest0-21swapper/021:25:010
1784178991814,3cyclictest2126012-21aten_repower_fr23:15:550
1784178991810,7cyclictest0-21swapper/023:51:010
1784178991810,4cyclictest2111586-21/usr/sbin/munin23:06:010
1784178991810,4cyclictest2012231-21cut22:00:000
2649091170,2phc2sys0-21swapper/323:30:543
2649091170,2phc2sys0-21swapper/323:22:003
2649091170,2phc2sys0-21swapper/322:37:123
2649091170,2phc2sys0-21swapper/322:31:233
2649091170,2phc2sys0-21swapper/322:01:013
22262652170,2sleep30-21swapper/300:21:003
1784180991715,1cyclictest0-21swapper/219:40:002
1784180991714,1cyclictest0-21swapper/222:35:012
1784180991714,1cyclictest0-21swapper/222:15:012
1784180991714,1cyclictest0-21swapper/221:40:022
1784180991714,1cyclictest0-21swapper/221:15:002
178417999178,4cyclictest0-21swapper/122:45:021
1784179991715,1cyclictest2223345-21latency_hist00:20:001
1784179991714,2cyclictest2230992-21systemd-run00:25:011
1784179991714,2cyclictest2146065-21phc2sys-jitter23:26:051
1784179991714,2cyclictest1808656-21kthreadcore19:26:021
1784179991714,2cyclictest1791241-21kthreadcore19:15:021
1784179991714,2cyclictest0-21swapper/122:15:011
1784179991713,3cyclictest2107519-21kthreadcore23:01:031
1784179991713,3cyclictest2107519-21kthreadcore23:01:031
1784179991712,1cyclictest134050irq/121-eno123:55:011
1784179991710,3cyclictest2012229-21munin-run22:00:001
178417999170,11cyclictest1799411-21apt-get19:20:531
178417899176,7cyclictest0-21swapper/021:51:010
178417899175,6cyclictest3824565-21in:imuxsock19:40:010
1784178991713,3cyclictest1937277-21kworker/u16:2+nfsiod21:12:280
383433398160,8rtkit-daemon2214773-21ssh00:11:510
2649091160,2phc2sys0-21swapper/322:42:573
2649091160,1phc2sys0-21swapper/323:43:133
22334872160,4sleep02235170-21kthreadcore00:26:030
178418099168,5cyclictest2208694-21chrt00:10:172
178418099164,8cyclictest0-21swapper/221:43:172
178418099161,7cyclictest0-21swapper/219:30:532
1784180991614,1cyclictest0-21swapper/221:31:382
1784180991614,1cyclictest0-21swapper/221:31:382
1784180991614,1cyclictest0-21swapper/220:20:012
1784180991613,1cyclictest0-21swapper/223:30:002
1784180991613,1cyclictest0-21swapper/223:06:082
1784180991613,1cyclictest0-21swapper/222:53:052
1784180991613,1cyclictest0-21swapper/222:41:022
1784180991613,1cyclictest0-21swapper/221:46:032
1784180991613,1cyclictest0-21swapper/220:41:062
1784180991613,1cyclictest0-21swapper/219:55:012
1784180991613,1cyclictest0-21swapper/219:25:002
1784180991613,1cyclictest0-21swapper/200:20:562
1784180991612,2cyclictest0-21swapper/223:46:502
1784180991612,2cyclictest0-21swapper/220:26:002
1784180991612,2cyclictest0-21swapper/200:35:562
1784180991610,2cyclictest0-21swapper/221:25:552
178417999163,2cyclictest491rcuog/221:10:011
1784179991613,2cyclictest351ktimers/121:48:051
1784179991613,2cyclictest1930996-21latency_hist21:05:011
1784179991613,2cyclictest0-21swapper/123:56:101
1784179991612,3cyclictest2083561-21kthreadcore22:46:031
1784179991612,3cyclictest1840081-21sort19:51:021
1784179991612,2cyclictest0-21swapper/121:25:021
1784179991610,5cyclictest3851705-21mta-sts-daemon21:36:571
178417899168,4cyclictest1849922-21tail20:00:550
1784178991613,2cyclictest3851703-21mta-sts-daemon19:45:020
1784178991613,2cyclictest2253560-21/usr/sbin/munin00:40:010
1784178991613,2cyclictest2223350-21sendmail00:20:000
1784178991613,2cyclictest2027879-21aten_repower_cu22:10:550
1784178991613,2cyclictest1968561-21sed21:30:590
1784178991613,2cyclictest1968561-21sed21:30:590
1784178991613,2cyclictest1960996-21grep21:25:590
1784178991613,2cyclictest1925773-21tail21:00:590
1784178991613,2cyclictest1912571-21aten_repower_cu20:50:550
1784178991613,2cyclictest1861031-21proc_pri20:06:060
1784178991613,2cyclictest1830604-21cut19:45:010
2649091151,3phc2sys0-21swapper/321:30:543
2649091151,3phc2sys0-21swapper/321:30:543
2649091150,3phc2sys0-21swapper/322:12:163
2649091150,2phc2sys0-21swapper/322:53:393
2649091150,2phc2sys0-21swapper/322:46:543
2649091150,1phc2sys0-21swapper/320:10:063
2649091150,1phc2sys0-21swapper/320:10:063
1784180991513,1cyclictest0-21swapper/223:50:582
1784180991513,1cyclictest0-21swapper/222:25:552
1784180991513,1cyclictest0-21swapper/222:25:012
1784180991513,1cyclictest0-21swapper/222:20:012
1784180991513,1cyclictest0-21swapper/220:00:012
1784180991512,1cyclictest0-21swapper/223:45:002
1784180991512,1cyclictest0-21swapper/223:11:022
1784180991512,1cyclictest0-21swapper/223:11:022
1784180991512,1cyclictest0-21swapper/223:03:162
1784180991512,1cyclictest0-21swapper/223:03:162
1784180991512,1cyclictest0-21swapper/219:46:072
1784180991512,1cyclictest0-21swapper/219:26:072
1784180991510,3cyclictest0-21swapper/219:15:532
178417999159,5cyclictest3851705-21mta-sts-daemon19:43:321
178417999158,3cyclictest383433398rtkit-daemon00:00:201
178417999157,3cyclictest3851698-21mta-sts-daemon23:24:281
178417999157,3cyclictest0-21swapper/121:20:011
178417999154,1cyclictest191rcu_preempt19:36:081
178417999151,4cyclictest2117568-21latency_hist23:10:021
1784179991513,1cyclictest3851705-21mta-sts-daemon22:51:591
1784179991512,2cyclictest2250688-21kthreadcore00:36:031
1784179991512,2cyclictest2044295-21irqrtprio22:21:001
1784179991512,2cyclictest1998666-21if_err_eno121:51:001
1784179991512,2cyclictest1968461-21grep21:30:581
1784179991512,2cyclictest1968461-21grep21:30:581
1784179991512,2cyclictest1918850-21aten2.4-expect20:55:551
1784179991512,2cyclictest1912253-21sh20:50:011
1784179991512,2cyclictest1871638-21kthreadcore20:16:021
1784179991512,2cyclictest1818008-21gpgconf19:35:011
1784179991512,2cyclictest0-21swapper/120:05:011
1784179991511,3cyclictest2172563-21kthreadcore23:46:011
1784179991511,3cyclictest2059042-21if_enp1s0.822:31:011
1784179991510,4cyclictest1790482-21munin-node20:34:561
178417899158,3cyclictest3851704-21mta-sts-daemon23:25:270
178417899158,3cyclictest0-21swapper/020:10:560
178417899158,3cyclictest0-21swapper/020:10:560
178417899156,7cyclictest1787065-21tr19:11:010
178417899154,6cyclictest1899685-21perf20:40:000
1784178991512,2cyclictest3851705-21mta-sts-daemon21:40:000
1784178991512,2cyclictest2199363-21timerandwakeup00:01:090
1784178991512,2cyclictest2158903-21tr23:36:010
1784178991512,2cyclictest2119787-21kthreadcore23:11:000
1784178991512,2cyclictest2119787-21kthreadcore23:11:000
1784178991512,2cyclictest2013440-21fschecks_count22:00:570
1784178991512,2cyclictest1888837-21kthreadcore20:31:030
1784178991510,4cyclictest3827634-1atopacctd22:26:030
1784178991510,4cyclictest2171599-21cstates23:45:560
178417899150,14cyclictest207-21jbd2/sda2-820:45:050
2649091148,2phc2sys0-21swapper/322:19:273
2649091145,3phc2sys0-21swapper/321:16:023
2649091142,2phc2sys0-21swapper/323:16:043
2649091140,4phc2sys0-21swapper/320:36:093
2649091140,2phc2sys0-21swapper/322:55:563
2649091140,2phc2sys0-21swapper/300:35:213
2649091140,2phc2sys0-21swapper/300:30:103
178418099147,5cyclictest1945408-21chrt21:15:562
1784180991411,2cyclictest0-21swapper/220:24:302
1784180991411,1cyclictest0-21swapper/222:56:072
1784180991411,1cyclictest0-21swapper/222:35:582
1784180991411,1cyclictest0-21swapper/222:01:012
1784180991411,1cyclictest0-21swapper/221:00:552
1784180991411,1cyclictest0-21swapper/220:01:082
1784180991411,1cyclictest0-21swapper/200:16:002
178417999149,1cyclictest134050irq/121-eno123:31:101
178417999149,1cyclictest134050irq/121-eno122:07:451
178417999145,6cyclictest134050irq/121-eno122:26:011
1784179991411,2cyclictest3851702-21mta-sts-daemon22:17:121
1784179991411,2cyclictest2127252-21kthreadcore23:16:021
1784179991411,2cyclictest1984006-21irqrtprio21:41:001
1784179991411,2cyclictest1904992-21needreboot20:41:031
1784179991411,2cyclictest1882183-21tr20:26:011
1784179991411,2cyclictest1792779-21grep19:15:031
178417899148,5cyclictest3851702-21mta-sts-daemon21:40:090
178417899146,7cyclictest0-21swapper/019:26:080
1784178991411,2cyclictest3827634-1atopacctd19:50:550
1784178991411,2cyclictest2093510-21switchtime22:51:070
1784178991411,2cyclictest2073119-21acpi22:40:530
1784178991411,2cyclictest1869845-21tr20:16:010
1784178991411,2cyclictest1800095-21gltestperf19:20:570
1784178991410,2cyclictest1880914-21latency_hist20:25:010
383433398130,3rtkit-daemon3851698-21mta-sts-daemon19:09:451
2649091131,2phc2sys0-21swapper/300:16:523
2649091130,3phc2sys0-21swapper/321:50:553
2649091130,2phc2sys0-21swapper/320:50:543
2649091130,2phc2sys0-21swapper/319:43:543
2649091130,2phc2sys0-21swapper/319:18:373
20539412130,2sleep30-21swapper/322:26:003
178418099138,3cyclictest0-21swapper/220:30:572
1784180991311,1cyclictest0-21swapper/223:21:022
1784180991311,1cyclictest0-21swapper/221:20:042
1784180991311,1cyclictest0-21swapper/221:10:022
1784180991311,1cyclictest0-21swapper/220:51:072
1784180991311,1cyclictest0-21swapper/220:45:572
1784180991311,1cyclictest0-21swapper/200:25:432
1784180991310,1cyclictest0-21swapper/220:35:122
1784180991310,1cyclictest0-21swapper/220:11:012
1784180991310,1cyclictest0-21swapper/220:11:012
178418099130,6cyclictest0-21swapper/221:50:552
178417999138,4cyclictest2209165-21sh00:10:551
178417999137,1cyclictest191rcu_preempt20:50:541
1784179991310,2cyclictest2096670-21irqcore22:56:001
1784179991310,2cyclictest1862472-21acpi20:10:541
1784179991310,2cyclictest1862472-21acpi20:10:541
1784179991310,2cyclictest1845938-21kthreadcore19:56:021
1784179991310,2cyclictest0-21swapper/122:35:591
178417899139,3cyclictest1846507-21kthreadcore19:56:030
1784178991310,2cyclictest3851875-21systemd-journal21:00:020
2649091124,1phc2sys0-21swapper/319:52:153
2649091123,2phc2sys0-21swapper/319:30:553
2649091121,3phc2sys0-21swapper/319:45:543
2649091121,2phc2sys0-21swapper/319:35:563
2649091120,2phc2sys0-21swapper/323:53:313
2649091120,2phc2sys0-21swapper/323:25:543
2649091120,2phc2sys0-21swapper/321:56:403
2649091120,2phc2sys0-21swapper/321:23:563
2649091120,2phc2sys0-21swapper/320:15:313
2649091120,1phc2sys0-21swapper/323:59:573
2649091120,1phc2sys0-21swapper/322:08:583
2649091120,1phc2sys0-21swapper/319:06:113
1784180991210,1cyclictest0-21swapper/219:41:002
178417899129,2cyclictest1881991-21gltestperf20:25:590
2649091112,2phc2sys0-21swapper/323:11:033
2649091112,2phc2sys0-21swapper/323:11:033
2649091110,2phc2sys0-21swapper/300:10:553
2649091110,1phc2sys0-21swapper/323:05:583
2649091110,1phc2sys0-21swapper/320:33:513
2649091110,1phc2sys0-21swapper/319:28:553
20497142110,3sleep30-21swapper/322:23:573
178418099119,1cyclictest0-21swapper/219:10:022
178417899110,7cyclictest1784203-21latency_hist19:10:010
2649091101,4phc2sys0-21swapper/321:45:563
2649091101,2phc2sys0-21swapper/321:26:133
2649091100,3phc2sys0-21swapper/319:10:053
2649091100,2phc2sys0-21swapper/323:45:503
2649091100,2phc2sys0-21swapper/323:37:043
2649091100,2phc2sys0-21swapper/323:00:413
2649091100,2phc2sys0-21swapper/323:00:413
2649091100,2phc2sys0-21swapper/321:41:013
2649091100,2phc2sys0-21swapper/320:20:523
2649091100,2phc2sys0-21swapper/319:20:533
2649091100,2phc2sys0-21swapper/300:25:553
2649091100,2phc2sys0-21swapper/300:00:573
2649091100,1phc2sys0-21swapper/320:25:133
19062922100,3sleep30-21swapper/320:45:413
264909191,3phc2sys0-21swapper/319:56:033
264909190,3phc2sys0-21swapper/321:10:583
264909190,2phc2sys0-21swapper/321:05:003
264909190,2phc2sys0-21swapper/320:55:553
264909190,2phc2sys0-21swapper/320:06:023
264909181,2phc2sys0-21swapper/321:05:083
264909180,2phc2sys0-21swapper/320:00:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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