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2025-12-10 - 16:09
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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
Characteristics of the 792 highest latencies:
System rackeslot2.osadl.org (updated Wed Dec 10, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
381972521150,2sleep30-21swapper/300:00:143
35021162880,1sleep00-21swapper/020:55:110
37475092870,2sleep30-21swapper/323:20:103
35789352680,1sleep13578937-21wc21:45:011
35789352680,1sleep13578937-21wc21:45:011
3368344992926,2cyclictest3814166-21sendmail00:00:001
3368343992522,2cyclictest0-21swapper/021:20:010
3368343992514,6cyclictest0-21swapper/000:30:010
3368344992219,2cyclictest3683768-21latency_hist22:45:011
3368344992219,2cyclictest3640377-21systemd22:20:021
3368343992219,2cyclictest1635-21dbus-daemon21:30:010
3368343992212,5cyclictest0-21swapper/022:05:000
3368345992118,1cyclictest0-21swapper/222:10:012
3368344992118,2cyclictest3407662-21sh19:40:001
3368344992114,3cyclictest3788212-21/usr/sbin/munin23:45:081
3368343992118,2cyclictest3805470-21dump-pmu-power23:55:000
3368343992118,2cyclictest3640261-21latency_hist22:20:010
3368343992112,5cyclictest3868270-21kthreadcore00:30:090
3368343992112,5cyclictest3584019-21proc_pri21:45:120
3368343992111,5cyclictest0-21swapper/023:25:090
35159582200,2sleep10-21swapper/121:05:101
336834599201,9cyclictest0-21swapper/222:50:012
3368345992017,1cyclictest0-21swapper/200:35:022
3368344992017,2cyclictest3395187-21/usr/sbin/munin19:30:011
3368344992017,2cyclictest3389088-21/usr/sbin/munin19:25:011
3368344992013,2cyclictest0-21swapper/123:50:021
336834399209,5cyclictest3817387-21kthreadcore00:00:090
336834399208,7cyclictest0-21swapper/023:15:070
3368343992011,8cyclictest0-21swapper/022:30:040
3368343992011,4cyclictest0-21swapper/023:50:000
302487291201,2phc2sys0-21swapper/321:26:333
302487291200,3phc2sys0-21swapper/322:13:173
3368345991917,1cyclictest0-21swapper/200:20:092
3368345991917,1cyclictest0-21swapper/200:20:092
3368345991916,1cyclictest0-21swapper/219:55:002
3368345991915,2cyclictest0-21swapper/222:20:012
3368344991916,2cyclictest3840331-21sh00:15:011
3368344991916,2cyclictest3822920-21latency_hist00:05:001
3368344991916,2cyclictest3613986-21acpi22:05:011
3368344991916,2cyclictest3413977-21/usr/sbin/munin19:45:001
3368344991912,3cyclictest0-21swapper/121:50:001
3368344991910,3cyclictest3570258-21head21:40:011
3368343991917,1cyclictest3831631-21grep00:10:000
3368343991913,5cyclictest3622878-21sh22:10:020
336834399191,13cyclictest3596620-21/usr/sbin/munin21:55:110
3368343991910,5cyclictest3810333-21kthreadcore23:55:120
3368345991816,1cyclictest0-21swapper/221:30:022
3368345991815,1cyclictest0-21swapper/223:35:092
3368345991814,2cyclictest0-21swapper/223:45:002
3368345991813,3cyclictest0-21swapper/222:24:062
336834499184,8cyclictest1635-21dbus-daemon19:50:001
3368344991815,2cyclictest3744843-21/usr/sbin/munin23:20:021
3368344991815,2cyclictest3368443-21apt-get19:10:011
3368344991815,2cyclictest1702-21in:imuxsock00:30:001
3368344991815,2cyclictest1652-1atopacctd23:00:021
336834399189,4cyclictest0-21swapper/000:35:020
3368343991815,2cyclictest3701268-21/usr/sbin/munin22:55:020
3368343991815,2cyclictest3481203-21latency_hist20:40:010
3368343991815,2cyclictest3438362-21idleruntime-cro20:05:000
3368343991811,6cyclictest0-21swapper/000:15:030
3368343991810,6cyclictest0-21swapper/023:05:020
302487291180,2phc2sys0-21swapper/300:25:363
302487291180,2phc2sys0-21swapper/300:12:423
3368345991715,1cyclictest0-21swapper/223:00:022
3368345991715,1cyclictest0-21swapper/219:25:012
3368345991715,1cyclictest0-21swapper/200:25:102
3368345991714,1cyclictest0-21swapper/222:55:002
3368345991714,1cyclictest0-21swapper/222:32:282
3368345991714,1cyclictest0-21swapper/219:40:002
3368345991714,1cyclictest0-21swapper/200:00:022
336834599171,14cyclictest0-21swapper/219:50:022
336834599171,10cyclictest34383542sleep220:05:002
336834499179,4cyclictest3547071-21kthreadcore21:25:131
3368344991714,2cyclictest3875589-21acpi00:35:011
3368344991714,2cyclictest3531732-21sendmail_mailst21:15:151
3368344991714,2cyclictest1652-1atopacctd23:20:111
3368344991711,1cyclictest0-21swapper/120:40:051
336834399174,6cyclictest3626670-21cut22:10:100
336834399171,4cyclictest0-21swapper/000:18:320
3368343991714,2cyclictest3675065-21cat22:40:010
3368343991713,3cyclictest3655770-21kworker/u16:2+nfsiod22:43:390
302487291170,2phc2sys0-21swapper/323:26:053
302487291170,2phc2sys0-21swapper/322:02:553
302487291170,2phc2sys0-21swapper/319:05:153
302487291170,2phc2sys0-21swapper/300:10:023
336834599161,7cyclictest36492672sleep222:25:032
3368345991614,1cyclictest0-21swapper/222:05:022
3368345991614,1cyclictest0-21swapper/221:55:112
3368345991614,1cyclictest0-21swapper/219:15:022
3368345991612,2cyclictest0-21swapper/220:20:012
336834599161,11cyclictest0-21swapper/221:18:442
3368344991613,2cyclictest3450596-21basename20:15:011
3368344991613,2cyclictest3401166-21cron19:35:011
3368344991613,2cyclictest1-21systemd22:15:021
3368344991613,2cyclictest0-21swapper/120:30:021
3368344991612,3cyclictest3703030-21kworker/u16:2+nfsiod23:03:241
3368344991612,3cyclictest3622968-21kworker/u16:4+nfsiod23:38:531
3368344991612,3cyclictest3622968-21kworker/u16:4+nfsiod22:23:551
3368344991612,2cyclictest3375731-21kthreadcore19:15:021
3368344991612,2cyclictest1702-21in:imuxsock00:20:011
3368344991610,2cyclictest170550irq/121-eno122:40:021
336834399169,6cyclictest0-21swapper/022:30:000
336834399168,4cyclictest3712959-21kthreadcore23:00:100
336834399167,5cyclictest3522529-21kthreadcore21:10:110
3368343991613,2cyclictest3596642-21acpi21:55:020
3368343991613,2cyclictest3407739-21apt-key19:40:010
3368343991613,2cyclictest1652-1atopacctd23:20:100
3368343991612,3cyclictest3382970-21systemd-run19:20:010
3368343991610,5cyclictest3772010-21irqcore23:35:080
302487291162,3phc2sys0-21swapper/322:39:153
302487291161,4phc2sys0-21swapper/322:10:013
302487291160,4phc2sys0-21swapper/321:40:003
302487291160,3phc2sys0-21swapper/322:45:513
302487291160,2phc2sys0-21swapper/323:05:393
302487291160,2phc2sys0-21swapper/300:16:193
3368345991513,1cyclictest0-21swapper/223:00:102
3368345991513,1cyclictest0-21swapper/222:15:012
3368345991513,1cyclictest0-21swapper/221:30:102
3368345991513,1cyclictest0-21swapper/220:25:012
3368345991512,2cyclictest0-21swapper/200:03:292
3368345991512,1cyclictest0-21swapper/221:25:002
3368345991512,1cyclictest0-21swapper/220:50:012
3368345991512,1cyclictest0-21swapper/200:15:492
3368345991511,2cyclictest0-21swapper/221:05:032
336834499159,5cyclictest3825925-21kthreadcore00:05:121
336834499153,7cyclictest3474998-21perf20:35:001
336834499152,8cyclictest3857950-21awk00:25:001
336834499152,8cyclictest3857950-21awk00:25:001
3368344991513,1cyclictest8351-21rtkit-daemon20:22:191
3368344991513,1cyclictest8351-21rtkit-daemon19:17:071
3368344991512,2cyclictest3697038-21kthreadcore22:50:101
3368344991512,2cyclictest3614861-21tail22:05:061
3368344991512,2cyclictest3596332-21cron21:55:001
3368344991512,2cyclictest3554064-21sed21:30:081
3368344991512,2cyclictest1803-21gdbus21:00:011
3368344991512,2cyclictest1635-21dbus-daemon19:55:011
3368344991512,2cyclictest0-21swapper/120:40:011
3368344991511,3cyclictest3877042-21kthreadcore00:35:091
3368344991511,3cyclictest3660605-21kthreadcore22:30:111
336834499150,3cyclictest0-21swapper/123:42:271
336834399158,1cyclictest0-21swapper/021:35:490
336834399156,4cyclictest0-21swapper/022:20:090
3368343991513,1cyclictest3426547-21telnet19:55:020
3368343991512,2cyclictest3765445-21kthreadcore23:30:090
3368343991512,2cyclictest3575454-21mailstats21:40:120
3368343991512,2cyclictest3575454-21mailstats21:40:120
3368343991512,2cyclictest3553518-21fschecks_count21:30:050
3368343991512,2cyclictest3410695-21kthreadcore19:40:090
3368343991512,2cyclictest3375826-21kthreadcore19:15:020
3368343991511,3cyclictest3692532-21kworker/u16:1+nfsiod23:11:390
336834399150,6cyclictest0-21swapper/023:45:000
302487291151,2phc2sys0-21swapper/320:00:103
302487291150,2phc2sys0-21swapper/323:02:283
336834599143,6cyclictest0-21swapper/221:50:012
336834599141,7cyclictest0-21swapper/200:10:012
336834599141,6cyclictest0-21swapper/219:10:012
3368345991412,1cyclictest0-21swapper/223:30:132
3368345991412,1cyclictest0-21swapper/223:15:022
3368345991412,1cyclictest0-21swapper/221:05:012
3368345991411,2cyclictest0-21swapper/219:15:102
3368345991411,1cyclictest0-21swapper/223:54:282
3368345991411,1cyclictest0-21swapper/223:45:052
3368345991411,1cyclictest0-21swapper/223:25:062
3368345991411,1cyclictest0-21swapper/223:10:012
3368345991411,1cyclictest0-21swapper/222:35:122
3368345991411,1cyclictest0-21swapper/221:00:022
3368345991411,1cyclictest0-21swapper/220:40:082
3368345991411,1cyclictest0-21swapper/220:30:012
336834599141,10cyclictest3683671-21turbostat22:45:002
3368345991410,2cyclictest0-21swapper/200:30:102
336834499149,1cyclictest170550irq/121-eno121:10:041
336834499145,4cyclictest0-21swapper/122:30:011
3368344991411,2cyclictest3767089-21latency23:30:101
3368344991411,2cyclictest3759179-21head23:25:161
3368344991411,2cyclictest3731025-21kthreadcore23:10:111
3368344991411,2cyclictest3719391-21sort23:05:051
3368344991411,2cyclictest3685304-21irqrtprio22:45:081
3368344991411,2cyclictest3535609-21apt-get21:20:031
3368344991411,2cyclictest3508557-21kthreadcore21:00:101
3368344991411,2cyclictest3493693-21tail20:50:051
3368344991411,2cyclictest3489189-21kthreadcore20:45:091
3368344991411,2cyclictest3439925-21irqrtprio20:05:081
3368344991411,2cyclictest3432941-21cstates20:00:061
3368344991411,2cyclictest3368341-21cyclictest20:15:121
3368344991410,3cyclictest3598408-21kthreadcore21:55:101
336834399147,6cyclictest3424589-21tr19:50:090
336834399144,5cyclictest3701377-21/usr/sbin/munin22:55:070
336834399142,6cyclictest3849623-21aten2.4-expect00:20:030
336834399142,6cyclictest3849623-21aten2.4-expect00:20:030
3368343991411,2cyclictest3538436-21kthreadcore21:20:110
3368343991411,2cyclictest3515474-21kthreadcore21:05:090
3368343991411,2cyclictest3511648-21sh21:05:000
3368343991411,2cyclictest3493333-21sh20:50:010
3368343991411,2cyclictest3456893-21/usr/sbin/munin20:20:100
3368343991411,2cyclictest3415554-21irqrtprio19:45:090
3368343991411,2cyclictest3398166-21kthreadcore19:30:090
3368343991411,2cyclictest1-21systemd19:10:020
3368343991411,2cyclictest0-21swapper/020:30:010
336834399140,9cyclictest3388990-21/usr/sbin/munin19:25:140
302487291143,2phc2sys0-21swapper/321:32:343
302487291141,3phc2sys0-21swapper/319:20:013
302487291140,3phc2sys0-21swapper/321:59:363
302487291140,2phc2sys0-21swapper/323:33:383
302487291140,2phc2sys0-21swapper/322:55:223
302487291140,2phc2sys0-21swapper/322:29:043
38554982130,2sleep30-21swapper/300:20:513
38554982130,2sleep30-21swapper/300:20:513
3368345991311,1cyclictest0-21swapper/223:20:012
3368345991311,1cyclictest0-21swapper/221:35:022
3368345991311,1cyclictest0-21swapper/220:35:012
3368345991311,1cyclictest0-21swapper/200:15:012
3368345991310,1cyclictest0-21swapper/221:55:002
3368345991310,1cyclictest0-21swapper/221:40:072
3368345991310,1cyclictest0-21swapper/221:40:072
3368345991310,1cyclictest0-21swapper/220:50:052
3368345991310,1cyclictest0-21swapper/220:35:072
336834599130,10cyclictest3432257-21turbostat20:00:002
336834399139,3cyclictest3487424-21sort20:45:020
336834399137,5cyclictest3475276-21aten2.4-expect20:35:010
336834399137,5cyclictest3440034-21tr20:05:090
336834399136,1cyclictest0-21swapper/022:45:090
336834399131,6cyclictest3450955-21aten2.4-expect20:15:060
3368343991310,2cyclictest3497344-21kthreadcore20:50:120
3368343991310,2cyclictest3445564-21idleruntime20:10:090
3368343991310,2cyclictest3383711-21fschecks_time19:20:050
302487291130,2phc2sys0-21swapper/323:55:103
302487291130,2phc2sys0-21swapper/323:15:273
302487291130,2phc2sys0-21swapper/323:13:423
302487291130,2phc2sys0-21swapper/321:43:323
302487291130,2phc2sys0-21swapper/321:43:323
336834599129,1cyclictest0-21swapper/221:10:072
336834599129,1cyclictest0-21swapper/219:40:092
336834599129,1cyclictest0-21swapper/219:25:072
336834599128,1cyclictest0-21swapper/220:10:142
3368345991210,1cyclictest0-21swapper/223:20:082
3368345991210,1cyclictest0-21swapper/219:30:092
336834499128,3cyclictest3428627-21kthreadcore19:55:081
302487291120,3phc2sys0-21swapper/300:35:023
302487291120,2phc2sys0-21swapper/321:00:363
302487291120,2phc2sys0-21swapper/319:30:033
336834599118,1cyclictest0-21swapper/220:05:072
302487291112,2phc2sys0-21swapper/323:50:493
302487291111,3phc2sys0-21swapper/321:16:393
302487291111,2phc2sys0-21swapper/321:54:103
302487291110,3phc2sys0-21swapper/321:12:353
302487291110,3phc2sys0-21swapper/320:00:013
302487291110,2phc2sys0-21swapper/322:20:593
302487291110,2phc2sys0-21swapper/321:21:403
302487291110,2phc2sys0-21swapper/320:25:103
302487291110,1phc2sys0-21swapper/320:07:343
302487291102,2phc2sys0-21swapper/321:05:133
302487291102,2phc2sys0-21swapper/320:35:083
302487291101,3phc2sys0-21swapper/321:45:093
302487291101,2phc2sys0-21swapper/320:15:113
302487291101,1phc2sys0-21swapper/319:27:313
302487291100,3phc2sys0-21swapper/320:45:013
302487291100,2phc2sys0-21swapper/323:49:133
302487291100,2phc2sys0-21swapper/323:40:113
302487291100,2phc2sys0-21swapper/322:52:433
302487291100,2phc2sys0-21swapper/322:44:003
302487291100,2phc2sys0-21swapper/322:17:073
302487291100,2phc2sys0-21swapper/320:50:073
302487291100,2phc2sys0-21swapper/319:52:153
302487291100,2phc2sys0-21swapper/319:20:503
302487291100,1phc2sys0-21swapper/320:49:593
30248729192,1phc2sys0-21swapper/319:40:093
30248729191,2phc2sys0-21swapper/322:30:053
30248729190,2phc2sys0-21swapper/323:35:063
30248729190,2phc2sys0-21swapper/320:55:123
30248729190,2phc2sys0-21swapper/320:30:153
30248729190,2phc2sys0-21swapper/320:20:053
30248729190,2phc2sys0-21swapper/320:10:063
30248729190,2phc2sys0-21swapper/319:45:023
30248729190,2phc2sys0-21swapper/319:40:013
30248729190,2phc2sys0-21swapper/319:10:043
30248729190,2phc2sys0-21swapper/300:30:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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