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2026-04-16 - 14:28
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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 376 highest latencies:
System rackeslot2.osadl.org (updated Thu Apr 16, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138097121700,2sleep30-21swapper/323:05:533
150764321010,2sleep20-21swapper/200:30:492
12658592710,1sleep11265858-21ssh21:48:191
1053186993215,11cyclictest1369513-21kthreadcore22:55:570
1053186992912,12cyclictest1440223-21/usr/sbin/munin23:45:550
105318699280,15cyclictest1118705-21awk20:00:470
1053186992616,6cyclictest1477288-21latency_hist00:10:010
1053186992516,8cyclictest1469866-21sh00:05:010
1053186992515,6cyclictest1462299-1atop00:20:010
1053186992514,2cyclictest1181297-21latency_hist20:50:010
105318699247,5cyclictest0-21swapper/021:10:560
1053186992415,8cyclictest1408372-21unixbench_singl23:21:020
1053186992415,8cyclictest0-21swapper/022:30:020
1053186992413,2cyclictest1388444-21sed23:10:520
383433398230,4rtkit-daemon3851705-21mta-sts-daemon20:26:071
1053187992317,2cyclictest134050irq/121-eno123:25:001
105318699239,4cyclictest1270821-21kthreadcore21:50:540
105318699236,5cyclictest0-21swapper/000:40:000
1053186992312,2cyclictest1144801-21grep20:20:540
1053186992310,4cyclictest1-21systemd00:12:510
1053188992220,1cyclictest0-21swapper/221:55:002
1053188992219,1cyclictest0-21swapper/200:25:002
105318699227,7cyclictest1451078-21kthreadcore23:50:560
1053186992214,2cyclictest1312585-21sh22:20:500
1053186992212,2cyclictest1428553-21kthreadcore23:35:540
2649191210,2ptp4l0-21swapper/322:55:563
1053187992118,2cyclictest1417356-21systemd23:30:011
1053187992115,2cyclictest134050irq/121-eno100:20:011
105318699218,6cyclictest1202401-21tr21:05:560
1053186992112,2cyclictest1344839-21kthreadcore22:40:540
1053186992111,2cyclictest1508398-21gltestperf00:30:540
1053186992110,2cyclictest3851704-21mta-sts-daemon21:36:410
105318699210,3cyclictest1156149-21perf20:30:000
1053188992018,1cyclictest0-21swapper/222:50:582
1053188992017,1cyclictest0-21swapper/222:50:012
1053187992017,2cyclictest3824565-21in:imuxsock21:40:011
1053187992017,2cyclictest1334042-21latency_hist22:35:001
1053187992017,2cyclictest1228947-21systemd21:25:011
1053187992017,2cyclictest0-21swapper/100:30:021
1053187992016,3cyclictest1319030-21kworker/u16:3+nfsiod23:10:371
105318699209,5cyclictest1381685-21kthreadcore23:05:550
1053186992017,2cyclictest1364611-21latency_hist22:55:000
1053186992017,2cyclictest1087045-21latency_hist19:35:000
1053186992013,6cyclictest0-21swapper/023:20:010
1053186992012,2cyclictest3824567-21rs:main0
1053186992011,5cyclictest0-21swapper/022:50:030
2649091190,2phc2sys0-21swapper/322:20:573
1053188991916,1cyclictest0-21swapper/222:40:012
1053188991916,1cyclictest0-21swapper/222:05:012
1053188991916,1cyclictest0-21swapper/220:25:002
1053187991916,2cyclictest1311460-21latency_hist22:20:001
1053187991916,2cyclictest1295120-21grep22:06:021
105318699199,5cyclictest0-21swapper/000:20:490
105318699197,3cyclictest3851703-21mta-sts-daemon23:44:360
105318699194,5cyclictest0-21swapper/021:30:490
1053186991911,2cyclictest1253234-21kernelversion21:40:540
383433398180,3rtkit-daemon3851702-21mta-sts-daemon20:34:141
2649091180,8phc2sys0-21swapper/300:15:473
2649091180,3phc2sys0-21swapper/321:27:493
2649091180,3phc2sys0-21swapper/321:27:493
1053188991816,1cyclictest0-21swapper/223:10:002
1053188991815,1cyclictest0-21swapper/222:40:592
1053187991815,2cyclictest1467289-21kthreadcore00:00:551
1053187991815,2cyclictest1357181-21apt-key22:50:011
1053187991814,2cyclictest1290-21dbus-daemon23:50:021
1053187991811,3cyclictest1455250-21/usr/sbin/munin23:55:501
105318699188,8cyclictest1290-21dbus-daemon00:00:000
1053186991815,2cyclictest1105844-21systemd-run19:50:000
1053186991812,5cyclictest1053184-21cyclictest23:00:580
2649091170,2phc2sys0-21swapper/323:42:183
2649091170,2phc2sys0-21swapper/322:30:553
2649091170,2phc2sys0-21swapper/322:27:143
1053188991715,1cyclictest0-21swapper/223:05:022
1053188991714,1cyclictest0-21swapper/221:41:012
1053188991714,1cyclictest0-21swapper/220:10:002
1053188991714,1cyclictest0-21swapper/220:10:002
1053188991714,1cyclictest0-21swapper/219:45:502
1053188991714,1cyclictest0-21swapper/219:25:582
1053188991713,2cyclictest0-21swapper/221:31:012
1053188991713,1cyclictest0-21swapper/222:00:012
1053187991714,2cyclictest3851703-21mta-sts-daemon21:15:491
1053187991714,2cyclictest3851702-21mta-sts-daemon00:13:461
1053187991714,2cyclictest1-21systemd22:00:531
1053187991714,2cyclictest1074504-21apt-key19:25:011
1053187991714,2cyclictest0-21swapper/121:25:021
1053187991714,2cyclictest0-21swapper/121:25:021
1053187991714,2cyclictest0-21swapper/120:50:001
1053187991712,4cyclictest3851704-21mta-sts-daemon23:35:521
1053187991711,2cyclictest1381558-21kthreadcore23:05:561
1053187991710,6cyclictest3851704-21mta-sts-daemon20:21:021
1053187991710,3cyclictest1398128-21kthreadcore23:15:571
1053186991714,2cyclictest1290-21dbus-daemon20:20:000
1053186991714,2cyclictest1112153-21latency_hist19:55:000
1053186991712,4cyclictest1219669-21ptp4l21:16:000
2649091161,2phc2sys0-21swapper/321:55:563
2649091160,2phc2sys0-21swapper/323:48:433
105318899161,8cyclictest0-21swapper/222:20:002
1053188991614,1cyclictest0-21swapper/223:10:522
1053188991614,1cyclictest0-21swapper/220:30:022
1053188991614,1cyclictest0-21swapper/200:30:012
1053188991613,1cyclictest0-21swapper/223:51:012
1053188991613,1cyclictest0-21swapper/223:45:492
1053188991613,1cyclictest0-21swapper/223:40:592
1053188991613,1cyclictest0-21swapper/222:55:532
1053188991613,1cyclictest0-21swapper/222:26:072
1053188991613,1cyclictest0-21swapper/221:10:542
1053188991613,1cyclictest0-21swapper/220:50:572
1053188991613,1cyclictest0-21swapper/200:16:012
105318899161,10cyclictest0-21swapper/200:10:012
1053187991614,1cyclictest1093249-21cron19:40:001
1053187991614,1cyclictest1068037-21grep19:20:001
1053187991613,2cyclictest3851702-21mta-sts-daemon21:41:171
1053187991613,2cyclictest3827634-1atopacctd22:20:541
1053187991613,2cyclictest1447788-21apt-get23:50:481
1053187991613,2cyclictest1439840-21latency_hist23:45:011
1053187991613,2cyclictest1100547-21fschecks_time19:45:521
1053187991613,2cyclictest0-21swapper/122:45:011
1053187991612,3cyclictest3851705-21mta-sts-daemon20:06:001
1053187991612,3cyclictest3851705-21mta-sts-daemon20:06:001
1053187991610,5cyclictest3851705-21mta-sts-daemon22:38:501
1053187991610,2cyclictest134050irq/121-eno122:29:241
1053186991614,1cyclictest0-21swapper/022:40:010
1053186991613,2cyclictest3851705-21mta-sts-daemon21:58:320
1053186991613,2cyclictest3851703-21mta-sts-daemon21:50:010
1053186991613,2cyclictest1327361-21tr22:30:510
1053186991613,2cyclictest1289041-21cut22:05:010
1053186991613,2cyclictest1187849-21latency_hist20:55:010
2649091150,2phc2sys0-21swapper/321:19:483
2649091150,2phc2sys0-21swapper/319:28:523
2649091150,2phc2sys0-21swapper/300:37:363
105318899158,5cyclictest0-21swapper/223:35:472
1053188991513,1cyclictest0-21swapper/223:25:512
1053188991513,1cyclictest0-21swapper/220:00:002
1053188991513,1cyclictest0-21swapper/200:00:482
1053188991512,1cyclictest0-21swapper/223:30:552
1053188991512,1cyclictest0-21swapper/223:20:502
1053188991512,1cyclictest0-21swapper/222:32:092
1053188991512,1cyclictest0-21swapper/222:12:432
1053188991512,1cyclictest0-21swapper/222:09:122
1053188991512,1cyclictest0-21swapper/221:50:012
1053188991512,1cyclictest0-21swapper/221:35:482
1053188991512,1cyclictest0-21swapper/221:25:512
1053188991512,1cyclictest0-21swapper/221:25:512
1053188991512,1cyclictest0-21swapper/221:15:572
1053188991512,1cyclictest0-21swapper/221:10:002
1053188991512,1cyclictest0-21swapper/221:00:512
1053188991512,1cyclictest0-21swapper/220:20:012
1053188991512,1cyclictest0-21swapper/219:10:552
1053188991512,1cyclictest0-21swapper/200:11:002
1053188991511,2cyclictest0-21swapper/222:20:492
105318799159,2cyclictest134050irq/121-eno100:06:011
105318799158,6cyclictest3851704-21mta-sts-daemon23:32:501
105318799157,3cyclictest0-21swapper/121:50:591
1053187991512,2cyclictest1516090-21cut00:35:541
1053187991512,2cyclictest1364863-21systemd-run22:55:011
1053187991512,2cyclictest1207460-21cstates21:10:501
1053187991512,2cyclictest1060095-21kthreadcore19:15:011
1053187991512,2cyclictest0-21swapper/120:00:001
1053187991511,3cyclictest3834332-21rtkit-daemon00:31:201
1053187991510,4cyclictest3834328-21sendmail-mta20:53:131
105318699158,6cyclictest0-21swapper/022:11:010
105318699155,5cyclictest0-21swapper/021:26:000
105318699155,5cyclictest0-21swapper/021:26:000
1053186991512,2cyclictest3851705-21mta-sts-daemon00:26:420
1053186991512,2cyclictest3841370-21avahi-daemon19:15:000
1053186991512,2cyclictest1305875-21kthreadcore22:15:560
1053186991512,2cyclictest1088363-21tr19:35:540
1053186991512,2cyclictest1068366-21sshd19:20:290
1053186991512,2cyclictest0-21swapper/020:00:000
2649091141,4phc2sys0-21swapper/300:10:473
2649091140,4phc2sys0-21swapper/323:55:343
2649091140,4phc2sys0-21swapper/300:03:053
2649091140,3phc2sys0-21swapper/321:14:303
2649091140,2phc2sys0-21swapper/323:26:503
2649091140,2phc2sys0-21swapper/323:13:053
2649091140,2phc2sys0-21swapper/321:49:033
1053188991412,1cyclictest0-21swapper/223:59:162
1053188991412,1cyclictest0-21swapper/220:15:012
1053188991412,1cyclictest0-21swapper/220:15:012
1053188991411,2cyclictest0-21swapper/220:33:582
1053188991411,1cyclictest0-21swapper/221:24:192
1053188991411,1cyclictest0-21swapper/220:50:002
1053188991411,1cyclictest0-21swapper/220:40:522
1053188991411,1cyclictest0-21swapper/219:40:022
1053188991411,1cyclictest0-21swapper/219:25:012
1053188991411,1cyclictest0-21swapper/219:10:012
1053188991410,2cyclictest0-21swapper/200:35:542
105318799149,2cyclictest3851702-21mta-sts-daemon22:55:431
105318799147,3cyclictest1106313-21tail19:50:481
1053187991411,2cyclictest3851705-21mta-sts-daemon21:01:531
1053187991411,2cyclictest1415875-21kworker/u16:2+nfsiod00:22:041
1053187991411,2cyclictest1373687-21irqcore23:00:551
1053187991411,2cyclictest1300009-21kthreadcore22:10:561
1053187991411,2cyclictest1279462-21missed_timers21:55:581
1053187991411,2cyclictest1237271-21cut21:30:511
1053187991411,2cyclictest1140695-21kthreadcore20:15:561
1053187991411,2cyclictest1081331-21tail19:30:501
1053187991411,1cyclictest0-21swapper/119:45:021
1053187991410,3cyclictest3851705-21mta-sts-daemon21:05:521
1053187991410,3cyclictest1120005-21kthreadcore20:00:551
105318699147,5cyclictest1162578-21systemd-run20:35:010
1053186991412,1cyclictest1413155-21kthreadcore23:25:560
1053186991411,2cyclictest3827634-1atopacctd20:40:560
1053186991411,2cyclictest1076168-21kernelversion19:25:550
1053186991411,2cyclictest0-21swapper/022:10:000
2649091131,6phc2sys0-21swapper/323:00:503
2649091130,2phc2sys0-21swapper/323:32:093
2649091130,2phc2sys0-21swapper/322:53:223
2649091130,2phc2sys0-21swapper/322:45:463
2649091130,2phc2sys0-21swapper/322:07:503
2649091130,2phc2sys0-21swapper/321:53:553
2649091130,1phc2sys0-21swapper/323:50:173
105318899131,7cyclictest0-21swapper/219:50:482
1053188991311,1cyclictest0-21swapper/223:15:502
1053188991311,1cyclictest0-21swapper/220:55:562
1053188991311,1cyclictest0-21swapper/219:40:492
1053188991310,2cyclictest0-21swapper/219:15:492
1053188991310,1cyclictest0-21swapper/220:01:002
105318799134,3cyclictest1169004-21sshd20:40:401
1053187991311,1cyclictest1163908-21irqrtprio20:35:551
1053187991311,1cyclictest0-21swapper/119:10:011
1053187991310,2cyclictest1131279-21aten2.4-expect20:10:491
1053187991310,2cyclictest1131279-21aten2.4-expect20:10:491
1053187991310,2cyclictest1075308-21cstates19:25:511
105318699136,5cyclictest1190981-21tr20:55:570
105318699133,4cyclictest1195146-21if_enp1s021:00:530
105318699132,5cyclictest1093793-21aten2.4-expect19:40:490
1053186991311,1cyclictest1132480-21kthreadcore20:10:560
1053186991311,1cyclictest1132480-21kthreadcore20:10:560
1053186991310,2cyclictest1418512-21hddtemp_smartct23:30:520
1053186991310,2cyclictest1163043-21cut20:35:510
1053186991310,2cyclictest1125588-21gltestperf20:05:520
1053186991310,2cyclictest1125588-21gltestperf20:05:520
1053186991310,2cyclictest1061974-21if_enp1s019:15:030
2649091122,2phc2sys0-21swapper/323:40:013
2649091121,2phc2sys0-21swapper/320:40:173
2649091120,3phc2sys0-21swapper/321:05:493
2649091120,2phc2sys0-21swapper/319:32:403
2649091120,2phc2sys0-21swapper/300:22:373
105318899129,1cyclictest0-21swapper/219:32:322
1053188991210,1cyclictest0-21swapper/220:35:502
105318799129,2cyclictest1193197-21sendmail_mailqu20:56:011
105318699121,6cyclictest1053019-21latency_hist19:10:020
2649091112,2phc2sys0-21swapper/300:05:463
2649091111,4phc2sys0-21swapper/319:05:493
2649091111,2phc2sys0-21swapper/322:41:543
2649091111,2phc2sys0-21swapper/319:40:543
2649091111,1phc2sys0-21swapper/320:49:143
2649091110,2phc2sys0-21swapper/322:15:093
2649091110,2phc2sys0-21swapper/321:43:133
2649091110,2phc2sys0-21swapper/320:35:563
2649091110,2phc2sys0-21swapper/319:38:373
2649091110,1phc2sys0-21swapper/319:56:533
2649091110,1phc2sys0-21swapper/319:17:573
2649091101,2phc2sys0-21swapper/322:10:503
2649091101,2phc2sys0-21swapper/321:25:013
2649091101,2phc2sys0-21swapper/320:26:023
2649091101,2phc2sys0-21swapper/300:25:543
2649091100,2phc2sys0-21swapper/322:37:293
2649091100,2phc2sys0-21swapper/322:01:163
2649091100,2phc2sys0-21swapper/321:30:063
2649091100,2phc2sys0-21swapper/319:50:563
2649091100,2phc2sys0-21swapper/300:31:083
2649091100,1phc2sys0-21swapper/319:13:123
264909194,2phc2sys0-21swapper/320:10:563
264909194,2phc2sys0-21swapper/320:10:563
264909191,4phc2sys0-21swapper/320:55:493
264909191,3phc2sys0-21swapper/320:20:483
264909191,2phc2sys0-21swapper/319:20:543
264909190,2phc2sys0-21swapper/323:21:423
264909190,2phc2sys0-21swapper/323:15:163
264909190,2phc2sys0-21swapper/321:35:273
264909190,2phc2sys0-21swapper/321:01:003
264909190,2phc2sys0-21swapper/320:54:563
264909190,2phc2sys0-21swapper/320:15:523
264909190,2phc2sys0-21swapper/320:05:503
264909190,2phc2sys0-21swapper/320:05:503
264909190,2phc2sys0-21swapper/320:00:493
264909190,2phc2sys0-21swapper/319:45:513
264909190,1phc2sys0-21swapper/320:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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