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2026-04-09 - 12:09
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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 Thu Apr 09, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4855202790,1sleep0485518-21ssh22:32:080
205282993018,11cyclictest600837-21cstates23:50:590
205282993013,8cyclictest3827634-1atopacctd00:06:020
205282992918,10cyclictest399573-21kthreadcore21:36:040
205282992917,8cyclictest658894-21timerwakeupswit00:26:130
205282992915,9cyclictest591164-21runrttasks23:41:270
3598012280,2sleep20-21swapper/221:11:012
205283992721,2cyclictest134050irq/121-eno122:56:131
205282992715,11cyclictest3851705-21mta-sts-daemon00:22:320
20528299269,10cyclictest220542-21/usr/sbin/munin19:21:010
205282992616,9cyclictest487423-21cpuspeed_turbos22:36:010
205282992615,7cyclictest453141-21kthreadcore22:11:070
205282992614,11cyclictest0-21swapper/023:30:000
20528299261,1cyclictest264304-21apt-get19:55:580
205282992519,5cyclictest276971-21gpgconf20:05:000
205282992515,9cyclictest289931-21aten2.4-expect20:15:590
205282992514,10cyclictest582001-21kthreadcore23:36:060
205283992417,5cyclictest1290-21dbus-daemon21:00:011
20528299247,7cyclictest359248-21aten2.4-expect21:10:590
205282992417,6cyclictest368020-21kthreadcore21:16:060
205282992410,6cyclictest547123-21munin-run23:15:010
205282992410,6cyclictest0-21swapper/023:20:000
205283992319,2cyclictest0-21swapper/122:25:001
205283992311,6cyclictest0-21swapper/123:01:001
20528299239,7cyclictest593951-21irqcore23:46:050
20528299239,5cyclictest0-21swapper/000:40:020
20528299234,3cyclictest382047-21cstates21:26:000
205282992318,4cyclictest448671-21apt-key22:10:000
205282992317,5cyclictest459888-21kthreadcore22:16:060
205282992316,6cyclictest501390-21sh22:44:530
20528299231,5cyclictest471780-21ssh22:25:100
205282992315,6cyclictest441100-21latency_hist22:05:010
205282992315,3cyclictest573908-21kthreadcore23:31:060
205282992310,5cyclictest3827634-1atopacctd23:01:010
20528299230,9cyclictest504855-21cut22:46:110
20528299230,5cyclictest394934-21ssh21:31:390
205283992219,2cyclictest211864-21if_enp1s0.819:15:011
205283992217,1cyclictest2052921systemd-run19:10:011
205283992211,3cyclictest0-21swapper/122:00:591
20528299229,8cyclictest0-21swapper/023:05:580
20528299229,5cyclictest0-21swapper/000:04:530
20528299228,7cyclictest214214-21/usr/sbin/munin19:16:080
205282992216,5cyclictest353343-21gltestperf21:06:010
205282992216,5cyclictest317729-21kthreadcore20:36:060
205282992216,5cyclictest305254-21kthreadcore20:26:070
205282992215,6cyclictest641305-21kthreadcore00:16:050
205282992215,6cyclictest558090-21kthreadcore23:21:070
205282992215,6cyclictest522301-21mailstats22:56:180
205282992215,6cyclictest259356-21kthreadcore19:51:030
205282992215,2cyclictest634798-21kthreadcore00:11:050
205282992215,1cyclictest134050irq/121-eno121:58:590
205282992214,3cyclictest238906-21latency_hist19:35:010
205282992212,9cyclictest464478-21/usr/sbin/munin22:21:100
205282992212,9cyclictest0-21swapper/021:55:000
205282992210,7cyclictest0-21swapper/021:41:040
205282992210,7cyclictest0-21swapper/021:41:040
205282992210,4cyclictest609552-21kthreadcore23:56:040
205283992118,2cyclictest563570-21grep23:26:031
205283992118,2cyclictest1290-21dbus-daemon20:00:001
205283992117,3cyclictest1290-21dbus-daemon23:55:011
205283992111,3cyclictest0-21swapper/121:21:051
205283992110,2cyclictest0-21swapper/122:20:001
20528299217,6cyclictest0-21swapper/021:24:180
20528299217,5cyclictest0-21swapper/022:51:110
205282992116,4cyclictest208480-21kthreadcore19:11:050
205282992115,5cyclictest662210-21kernelversion00:31:050
205282992114,6cyclictest345048-21switchtime20:56:110
205282992114,6cyclictest297209-21irqcore20:21:040
205282992114,6cyclictest250639-21ptp4l19:41:080
205282992114,2cyclictest338686-21rt-features20:51:090
205282992112,2cyclictest346374-21apt-get21:00:580
20528299210,5cyclictest0-21swapper/019:25:590
2649091200,2phc2sys0-21swapper/323:43:363
205283992017,2cyclictest577233-21apt-key23:35:001
205283992017,2cyclictest358626-21munin-plugin-st21:10:011
205283992017,2cyclictest1326-21systemd-logind21:05:011
205283992016,3cyclictest485157-21grep22:31:131
205283992010,2cyclictest0-21swapper/123:15:011
20528299205,7cyclictest411719-21/usr/sbin/munin21:46:020
205282992014,2cyclictest314718-21/usr/sbin/munin20:35:020
2862112190,2sleep1191rcu_preempt20:11:051
20528499192,6cyclictest0-21swapper/200:00:002
205284991916,1cyclictest0-21swapper/223:05:012
205284991916,1cyclictest0-21swapper/221:15:202
20528399199,6cyclictest1996-21runrttasks21:42:531
20528399199,6cyclictest1996-21runrttasks21:42:531
20528399199,3cyclictest493072-21runrttasks22:37:221
20528399199,3cyclictest3827634-1atopacctd22:11:001
20528399198,6cyclictest0-21swapper/120:05:131
20528399198,6cyclictest0-21swapper/120:05:131
205283991916,2cyclictest1290-21dbus-daemon23:41:081
205283991916,2cyclictest1290-21dbus-daemon21:40:001
205283991916,2cyclictest1290-21dbus-daemon00:20:011
205283991916,2cyclictest0-21swapper/123:50:001
205283991913,4cyclictest1-21systemd19:20:021
205283991911,2cyclictest0-21swapper/121:15:011
20528299195,2cyclictest257662-21basename19:50:010
205282991912,2cyclictest283446-21systemd-run20:10:010
205282991912,2cyclictest283446-21systemd-run20:10:010
2649091180,3phc2sys0-21swapper/300:33:013
2649091180,2phc2sys0-21swapper/323:33:533
20528499181,8cyclictest0-21swapper/221:30:012
205284991815,1cyclictest0-21swapper/223:10:012
205284991815,1cyclictest0-21swapper/220:00:002
205284991813,1cyclictest0-21swapper/221:05:572
20528399189,5cyclictest1996-21runrttasks23:56:141
20528399188,3cyclictest0-21swapper/100:31:011
20528399185,3cyclictest3851703-21mta-sts-daemon00:05:281
205283991815,2cyclictest654139-21gltestperf00:26:031
205283991815,2cyclictest584896-21sh23:40:001
205283991815,2cyclictest499792-21cat22:41:091
205283991815,2cyclictest472608-21sh22:26:031
205283991815,2cyclictest1290-21dbus-daemon22:06:091
205283991814,3cyclictest320805-21systemd-run20:40:001
2649091170,3phc2sys0-21swapper/322:24:593
2649091170,2phc2sys0-21swapper/323:29:433
2649091170,2phc2sys0-21swapper/323:14:453
205284991715,1cyclictest0-21swapper/222:10:012
205284991715,1cyclictest0-21swapper/219:15:012
205284991714,1cyclictest0-21swapper/222:46:092
205284991714,1cyclictest0-21swapper/221:35:022
205284991714,1cyclictest0-21swapper/200:26:082
20528399177,6cyclictest0-21swapper/120:04:231
20528399177,6cyclictest0-21swapper/119:23:131
20528399175,2cyclictest358477-21diskmemload00:01:181
20528399172,4cyclictest370001-21kthreadcore21:16:071
20528399171,6cyclictest637794-21cat00:15:001
205283991714,2cyclictest548188-21fschecks_count23:16:001
205283991714,2cyclictest506581-21kthreadcore22:46:121
205283991714,2cyclictest3851704-21mta-sts-daemon22:51:121
205283991714,2cyclictest303132-21tail20:26:031
205283991714,2cyclictest0-21swapper/121:26:121
205283991713,3cyclictest3827634-1atopacctd19:36:121
205283991710,2cyclictest134050irq/121-eno123:06:051
2649091160,1phc2sys0-21swapper/322:46:233
20528499162,5cyclictest0-21swapper/220:20:012
205284991613,1cyclictest0-21swapper/223:15:002
205284991613,1cyclictest0-21swapper/223:00:012
205284991613,1cyclictest0-21swapper/222:51:042
205284991613,1cyclictest0-21swapper/220:55:012
205284991613,1cyclictest0-21swapper/220:45:002
205284991612,2cyclictest0-21swapper/221:01:032
20528499160,6cyclictest0-21swapper/223:40:012
20528399168,4cyclictest1109-21hwrng21:45:241
20528399167,2cyclictest426369-21kworker/1:0+events_freezable23:21:061
205283991614,1cyclictest0-21swapper/121:35:011
205283991613,2cyclictest668773-21aten_repower_fr00:35:591
205283991613,2cyclictest651181-21mailstats00:21:091
205283991613,2cyclictest419363-21aten2.4-expect21:51:001
205283991613,2cyclictest3841051-21wpa_supplicant21:59:371
205283991613,2cyclictest322203-21grep20:41:041
205283991613,2cyclictest294843-21phc2sys-jitter20:16:081
205283991613,2cyclictest231467-21kthreadcore19:26:071
205283991613,2cyclictest1290-21dbus-daemon19:35:021
205283991612,3cyclictest3827634-1atopacctd19:45:011
205283991612,3cyclictest332505-21mailstats20:46:091
205283991611,1cyclictest134050irq/121-eno120:30:591
2649091156,2phc2sys0-21swapper/320:21:103
2649091152,2phc2sys0-21swapper/323:55:583
2649091150,2phc2sys0-21swapper/323:21:593
2649091150,2phc2sys0-21swapper/322:02:113
2649091150,2phc2sys0-21swapper/321:20:063
2649091150,2phc2sys0-21swapper/300:18:473
2649091150,1phc2sys0-21swapper/322:33:403
2649091150,1phc2sys0-21swapper/319:30:293
20528499155,5cyclictest0-21swapper/222:30:012
20528499151,7cyclictest0-21swapper/223:20:012
205284991513,1cyclictest0-21swapper/220:35:022
205284991512,1cyclictest0-21swapper/223:46:072
205284991512,1cyclictest0-21swapper/222:12:322
205284991512,1cyclictest0-21swapper/222:01:092
205284991512,1cyclictest0-21swapper/221:21:112
205284991512,1cyclictest0-21swapper/221:00:012
205284991512,1cyclictest0-21swapper/220:10:002
205284991512,1cyclictest0-21swapper/220:10:002
205284991512,1cyclictest0-21swapper/219:48:132
205284991512,1cyclictest0-21swapper/200:34:252
205284991512,1cyclictest0-21swapper/200:01:082
20528399154,2cyclictest134050irq/121-eno120:50:571
205283991512,2cyclictest299014-21kthreadcore20:21:061
205283991512,2cyclictest260250-21kthreadcore19:51:041
205283991512,2cyclictest257053-21switchtime19:46:111
20528299155,5cyclictest321084-21/usr/sbin/munin20:41:120
205282991512,2cyclictest0-21swapper/020:11:050
205282991512,2cyclictest0-21swapper/019:10:010
205282991511,3cyclictest331350-21kthreadcore20:46:050
205282991511,3cyclictest240607-21kthreadcore19:36:060
2649091141,3phc2sys0-21swapper/320:25:593
2649091141,3phc2sys0-21swapper/319:55:583
2649091141,1phc2sys0-21swapper/319:46:003
2649091140,5phc2sys0-21swapper/319:50:573
2649091140,2phc2sys0-21swapper/323:17:463
2649091140,2phc2sys0-21swapper/322:28:003
2649091140,2phc2sys0-21swapper/319:24:003
2649091140,1phc2sys0-21swapper/319:29:563
20528499141,6cyclictest0-21swapper/221:45:592
205284991412,1cyclictest0-21swapper/222:25:002
205284991412,1cyclictest0-21swapper/220:21:052
205284991412,1cyclictest0-21swapper/219:55:012
205284991412,1cyclictest0-21swapper/219:31:022
205284991411,2cyclictest0-21swapper/222:20:022
205284991411,1cyclictest0-21swapper/223:51:072
205284991411,1cyclictest0-21swapper/223:30:002
205284991411,1cyclictest0-21swapper/223:25:002
205284991411,1cyclictest0-21swapper/221:41:042
205284991411,1cyclictest0-21swapper/221:41:042
205284991411,1cyclictest0-21swapper/220:26:112
205284991411,1cyclictest0-21swapper/219:30:002
205284991410,2cyclictest0-21swapper/220:37:152
205284991410,1cyclictest0-21swapper/220:14:492
2649091133,2phc2sys0-21swapper/322:11:043
2649091130,2phc2sys0-21swapper/323:38:163
2649091130,2phc2sys0-21swapper/322:58:503
2649091130,2phc2sys0-21swapper/321:36:213
2649091130,2phc2sys0-21swapper/321:12:133
2649091130,2phc2sys0-21swapper/320:47:553
2649091130,1phc2sys0-21swapper/319:17:303
20528499139,2cyclictest0-21swapper/221:37:522
20528499139,2cyclictest0-21swapper/219:20:022
20528499136,4cyclictest631806-21taskset00:11:032
20528499131,8cyclictest0-21swapper/200:20:582
205284991311,1cyclictest0-21swapper/222:00:012
205284991311,1cyclictest0-21swapper/221:51:052
205284991311,1cyclictest0-21swapper/220:45:572
205284991311,1cyclictest0-21swapper/220:02:082
205284991311,1cyclictest0-21swapper/200:06:062
205284991310,1cyclictest0-21swapper/223:31:052
205284991310,1cyclictest0-21swapper/222:40:232
205284991310,1cyclictest0-21swapper/222:31:002
4478162120,2sleep30-21swapper/322:07:393
2649091122,2phc2sys0-21swapper/323:01:063
2649091121,5phc2sys0-21swapper/322:40:573
2649091121,5phc2sys0-21swapper/320:15:583
2649091121,2phc2sys0-21swapper/300:14:383
2649091120,2phc2sys0-21swapper/321:48:483
2649091120,2phc2sys0-21swapper/321:41:103
2649091120,2phc2sys0-21swapper/321:41:103
2649091120,2phc2sys0-21swapper/321:06:563
2649091120,2phc2sys0-21swapper/320:56:453
2649091120,2phc2sys0-21swapper/320:36:413
2649091120,2phc2sys0-21swapper/319:10:173
2649091120,2phc2sys0-21swapper/319:07:483
2649091120,2phc2sys0-21swapper/300:29:013
20528499129,1cyclictest0-21swapper/223:41:072
20528499129,1cyclictest0-21swapper/200:35:522
20528499121,7cyclictest2455342sleep219:40:572
205284991210,1cyclictest0-21swapper/222:36:072
205284991210,1cyclictest0-21swapper/219:40:012
205284991210,1cyclictest0-21swapper/219:20:292
205284991210,1cyclictest0-21swapper/200:15:442
2649091113,2phc2sys0-21swapper/322:51:043
2649091112,2phc2sys0-21swapper/321:25:513
2649091110,4phc2sys0-21swapper/300:20:583
2649091110,2phc2sys0-21swapper/323:10:003
2649091110,2phc2sys0-21swapper/300:00:063
2649091110,1phc2sys0-21swapper/320:11:283
2649091101,2phc2sys0-21swapper/322:20:023
2649091101,2phc2sys0-21swapper/319:41:113
2649091100,2phc2sys0-21swapper/323:47:493
2649091100,2phc2sys0-21swapper/321:56:133
2649091100,2phc2sys0-21swapper/321:51:443
2649091100,2phc2sys0-21swapper/321:30:363
2649091100,2phc2sys0-21swapper/321:15:133
2649091100,2phc2sys0-21swapper/321:04:543
2649091100,2phc2sys0-21swapper/300:36:193
2649091100,2phc2sys0-21swapper/300:07:493
20528499108,1cyclictest0-21swapper/219:10:012
264909191,4phc2sys0-21swapper/320:50:573
264909191,3phc2sys0-21swapper/320:05:583
264909191,3phc2sys0-21swapper/320:05:583
264909190,2phc2sys0-21swapper/323:50:053
264909190,2phc2sys0-21swapper/322:35:293
264909190,2phc2sys0-21swapper/320:41:063
264909190,2phc2sys0-21swapper/320:31:003
264909180,2phc2sys0-21swapper/319:36:023
264909180,1phc2sys0-21swapper/320:00:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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