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2026-07-25 - 17:50
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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 Sat Jul 25, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140901521150,2sleep30-21swapper/309:11:013
1254541992719,1cyclictest0-21swapper/211:50:022
1254540992618,7cyclictest0-21swapper/107:15:021
1254538992515,6cyclictest1612125-21/usr/sbin/munin11:30:580
125454099241,6cyclictest1330798-21apt-config08:10:021
1254540992316,3cyclictest69250irq/121-eno111:08:061
1254540992316,2cyclictest69250irq/121-eno112:05:021
3240591221,7phc2sys0-21swapper/307:05:513
1254541992219,1cyclictest0-21swapper/211:20:012
1254541992219,1cyclictest0-21swapper/209:25:582
1254540992215,3cyclictest1636590-21kthreadcore11:45:571
125454099221,15cyclictest1426344-21latency_hist09:25:021
1254538992212,5cyclictest0-21swapper/009:50:030
1254541992118,1cyclictest0-21swapper/211:25:012
1254540992113,3cyclictest0-21swapper/112:10:011
1254538992113,7cyclictest0-21swapper/010:00:030
1254538992112,5cyclictest1689803-21kthreadcore12:21:000
1157598210,6rtkit-daemon11561-21sendmail-mta11:51:190
1254541992018,1cyclictest0-21swapper/207:15:012
1254540992017,2cyclictest1626353-21sh11:40:011
1254540992017,2cyclictest1391709-21apt-config09:00:011
1254540992013,2cyclictest0-21swapper/111:20:011
125453899209,6cyclictest0-21swapper/011:05:010
1254538992013,6cyclictest1701279-21tr12:30:530
1254538992012,7cyclictest0-21swapper/010:40:010
1254538992011,5cyclictest1331244-21tail08:10:530
1157598200,4rtkit-daemon676-21mta-sts-daemon08:28:490
1157598200,4rtkit-daemon676-21mta-sts-daemon08:28:490
1157598200,4rtkit-daemon1410067-21ssh09:11:240
1254541991917,1cyclictest0-21swapper/211:30:022
1254540991916,2cyclictest1647223-21grep11:51:061
1254540991916,2cyclictest1450053-21grep09:40:551
1254540991914,3cyclictest1344221-21sshd08:20:571
1254540991912,2cyclictest0-21swapper/111:25:481
1254540991910,3cyclictest0-21swapper/110:40:511
125453899198,6cyclictest0-21swapper/012:25:510
125453899198,6cyclictest0-21swapper/011:40:520
125453899196,8cyclictest1435707-21irqrtprio09:30:580
1254538991916,2cyclictest1478377-21/usr/sbin/munin10:00:010
1254538991916,2cyclictest1391471-21munin-run09:00:010
1254538991916,2cyclictest1368236-21cut08:40:550
1254538991916,2cyclictest1349001-21idleruntime-cro08:25:010
1254538991910,5cyclictest1546072-21cstates10:45:530
3240591181,2phc2sys0-21swapper/309:46:173
1254541991816,1cyclictest0-21swapper/212:25:022
1254541991816,1cyclictest0-21swapper/207:20:022
1254541991815,1cyclictest0-21swapper/211:30:582
1254541991815,1cyclictest0-21swapper/210:10:002
1254541991815,1cyclictest0-21swapper/209:36:112
1254541991815,1cyclictest0-21swapper/208:40:012
1254540991815,2cyclictest1465855-21kthreadcore09:50:591
1254540991815,2cyclictest10930-21cron09:35:011
125453899187,7cyclictest1309-21mta-sts-daemon10:25:390
1254538991815,2cyclictest664-21dbus-daemon12:10:010
1254538991815,2cyclictest664-21dbus-daemon07:40:010
1254538991815,2cyclictest1604345-21systemd-run11:25:020
1254538991815,2cyclictest1261416-21kthreadcore07:15:020
1254538991814,3cyclictest1634437-21/usr/sbin/munin11:45:500
3240591170,3phc2sys0-21swapper/310:04:293
3240591170,2phc2sys0-21swapper/312:14:583
3240591170,2phc2sys0-21swapper/311:52:383
3240591170,2phc2sys0-21swapper/308:30:543
3240591170,1phc2sys0-21swapper/310:33:113
1254541991714,1cyclictest0-21swapper/212:26:002
1254541991714,1cyclictest0-21swapper/212:00:012
1254541991714,1cyclictest0-21swapper/211:05:582
1254541991714,1cyclictest0-21swapper/210:45:012
1254541991714,1cyclictest0-21swapper/210:40:012
1254541991714,1cyclictest0-21swapper/209:11:082
1254541991714,1cyclictest0-21swapper/208:35:002
1254541991714,1cyclictest0-21swapper/208:00:022
1254541991713,2cyclictest0-21swapper/209:56:052
125454099179,3cyclictest0-21swapper/110:55:511
125454099179,1cyclictest69250irq/121-eno109:38:521
1254540991714,2cyclictest690-21rs:main1
1254540991714,2cyclictest1694451-21if_enp1s0.812:25:561
1254540991714,2cyclictest1589917-21kworker/u16:2-rpciod11:45:011
1254540991714,2cyclictest1583069-21cpuspeed_turbos11:10:541
1254540991714,2cyclictest1574725-21cut11:05:011
1254540991714,2cyclictest1523937-21fschecks_time10:30:561
1254540991714,2cyclictest1318385-21/usr/sbin/munin08:00:011
1254540991714,2cyclictest1312061-21latency_hist07:55:011
1254540991714,2cyclictest1309-21mta-sts-daemon11:23:061
1254540991714,2cyclictest1288810-21gltestperf07:35:551
1254540991714,2cyclictest1287728-21cron07:35:011
1254540991714,2cyclictest1254536-21cyclictest08:53:061
1254540991714,2cyclictest0-21swapper/112:25:011
1254540991714,2cyclictest0-21swapper/110:55:011
1254540991714,2cyclictest0-21swapper/110:25:011
1254540991714,2cyclictest0-21swapper/110:15:011
1254540991714,2cyclictest0-21swapper/110:05:001
1254540991714,2cyclictest0-21swapper/107:30:011
1254540991713,2cyclictest1472161-21fschecks_time09:55:551
125453899179,5cyclictest1324964-21tail08:05:540
125453899178,5cyclictest0-21swapper/012:10:580
1254538991714,2cyclictest1679559-21sed12:15:540
1254538991714,2cyclictest1626199-21grep11:40:000
1254538991714,2cyclictest1582596-21sh11:10:360
1254538991714,2cyclictest1494390-21grep10:10:550
1254538991714,2cyclictest1306-21mta-sts-daemon09:43:160
1254538991713,3cyclictest1254536-21cyclictest07:16:010
1254538991713,3cyclictest1136012-21kworker/u16:1+nfsiod09:25:530
1254538991712,2cyclictest1307-21mta-sts-daemon11:25:360
1157598170,2rtkit-daemon1307-21mta-sts-daemon10:20:310
3240591161,2phc2sys0-21swapper/312:00:493
3240591160,2phc2sys0-21swapper/311:21:303
3240591160,2phc2sys0-21swapper/310:25:253
3240591160,2phc2sys0-21swapper/309:52:313
3240591160,1phc2sys0-21swapper/311:07:103
1254541991614,1cyclictest0-21swapper/210:50:022
1254541991614,1cyclictest0-21swapper/210:25:012
1254541991613,1cyclictest0-21swapper/212:30:552
1254541991613,1cyclictest0-21swapper/212:06:052
1254541991613,1cyclictest0-21swapper/211:40:522
1254541991613,1cyclictest0-21swapper/211:35:542
1254541991613,1cyclictest0-21swapper/210:56:012
1254541991613,1cyclictest0-21swapper/210:25:552
1254541991613,1cyclictest0-21swapper/210:19:122
1254541991613,1cyclictest0-21swapper/209:30:542
1254541991613,1cyclictest0-21swapper/209:10:012
1254541991613,1cyclictest0-21swapper/208:10:022
1254540991613,2cyclictest1619070-21latency_hist11:35:011
1254540991613,2cyclictest1374953-21kthreadcore08:45:561
1254540991613,2cyclictest1300546-21cpuspeed_turbos07:45:531
1254540991611,4cyclictest715-21wpa_supplicant08:35:421
125453899169,6cyclictest1306-21mta-sts-daemon09:54:030
125453899164,5cyclictest664-21dbus-daemon12:40:020
125453899164,5cyclictest1541929-21cut10:41:000
1254538991613,2cyclictest664-21dbus-daemon12:00:010
1254538991613,2cyclictest1443269-21kernelversion09:35:570
1254538991613,2cyclictest1311209-21pmu-power07:51:010
1254538991613,2cyclictest1254536-21cyclictest08:45:530
125453899161,13cyclictest1305965-21cron07:50:010
1254538991611,2cyclictest1307-21mta-sts-daemon09:20:230
125453899160,4cyclictest1385411-21grep08:55:000
3240591150,4phc2sys0-21swapper/308:45:503
1254541991513,1cyclictest0-21swapper/212:15:572
1254541991513,1cyclictest0-21swapper/211:51:342
1254541991513,1cyclictest0-21swapper/209:50:592
1254541991512,1cyclictest0-21swapper/212:10:562
1254541991512,1cyclictest0-21swapper/210:12:302
1254541991512,1cyclictest0-21swapper/209:45:012
1254541991512,1cyclictest0-21swapper/209:20:552
1254541991512,1cyclictest0-21swapper/209:15:502
1254541991512,1cyclictest0-21swapper/207:51:562
1254541991512,1cyclictest0-21swapper/207:35:552
1254541991512,1cyclictest0-21swapper/207:25:582
1254541991511,2cyclictest0-21swapper/211:05:022
1254541991511,2cyclictest0-21swapper/208:45:572
1254541991510,1cyclictest0-21swapper/212:00:032
125454099159,5cyclictest1309-21mta-sts-daemon10:29:481
125454099158,3cyclictest1309-21mta-sts-daemon09:46:291
125454099151,4cyclictest1706052-21python312:31:041
1254540991513,1cyclictest1034-21runrttasks09:12:461
1254540991512,2cyclictest664-21dbus-daemon12:40:021
1254540991512,2cyclictest1683681-21grep12:16:001
1254540991512,2cyclictest1546028-21tr10:45:531
1254540991512,2cyclictest1531990-21kthreadcore10:35:581
1254540991512,2cyclictest1502159-21irqcore10:15:561
1254540991512,2cyclictest1431567-21kthreadcore09:25:591
1254540991512,2cyclictest1412436-21fschecks_count09:15:541
1254540991511,3cyclictest1352174-21kthreadcore08:25:591
1254540991511,3cyclictest1352174-21kthreadcore08:25:591
1254540991511,3cyclictest1340044-21kthreadcore08:15:591
1254540991511,2cyclictest0-21swapper/109:10:021
125453899159,5cyclictest11574-21rtkit-daemon07:30:040
125453899156,5cyclictest0-21swapper/011:15:580
1254538991512,2cyclictest759-1atopacctd10:30:560
1254538991512,2cyclictest1657451-21if_enp1s0.812:00:540
1254538991512,2cyclictest1575933-21fschecks_time11:05:530
1254538991512,2cyclictest1563198-21kthreadcore10:55:580
1254538991512,2cyclictest1557926-21missed_timers10:51:030
1254538991512,2cyclictest1281534-21latency_hist07:30:010
1254538991512,2cyclictest1254536-21cyclictest08:15:580
1254538991512,2cyclictest0-21swapper/008:05:010
1254538991511,3cyclictest1357208-21kthreadcore08:30:580
1254538991511,3cyclictest1297927-21kthreadcore07:40:590
125453899151,12cyclictest1501114-21/usr/sbin/munin10:15:520
3240591141,6phc2sys0-21swapper/307:55:523
3240591140,4phc2sys0-21swapper/312:20:523
3240591140,2phc2sys0-21swapper/311:46:453
3240591140,2phc2sys0-21swapper/309:37:363
3240591140,2phc2sys0-21swapper/307:15:013
14246792140,2sleep30-21swapper/309:21:043
1254541991412,1cyclictest0-21swapper/211:10:582
1254541991412,1cyclictest0-21swapper/210:51:022
1254541991412,1cyclictest0-21swapper/208:50:592
1254541991412,1cyclictest0-21swapper/208:15:582
1254541991412,1cyclictest0-21swapper/207:21:042
1254541991411,1cyclictest0-21swapper/212:39:022
1254541991411,1cyclictest0-21swapper/210:00:562
1254541991411,1cyclictest0-21swapper/209:45:582
1254541991411,1cyclictest0-21swapper/209:00:552
1254541991411,1cyclictest0-21swapper/208:55:582
1254541991411,1cyclictest0-21swapper/208:40:532
1254541991411,1cyclictest0-21swapper/208:25:572
1254541991411,1cyclictest0-21swapper/208:25:572
1254541991411,1cyclictest0-21swapper/208:20:572
1254541991411,1cyclictest0-21swapper/208:00:592
1254541991411,1cyclictest0-21swapper/207:45:522
1254541991411,1cyclictest0-21swapper/207:30:582
1254540991411,2cyclictest1309-21mta-sts-daemon07:40:581
1254540991411,2cyclictest1307-21mta-sts-daemon12:10:451
1254540991411,2cyclictest1136012-21kworker/u16:1-events_unbound11:56:131
1254540991411,2cyclictest0-21swapper/108:10:591
1254540991410,3cyclictest1320025-21irqrtprio08:00:571
125454099140,2cyclictest0-21swapper/109:00:151
125453899141,8cyclictest1318420-21munin-run08:00:020
1254538991411,2cyclictest1486693-21tr10:05:540
1254538991411,2cyclictest1379341-21kworker/u16:3+nfsiod09:20:000
1254538991411,2cyclictest1309-21mta-sts-daemon09:00:530
1254538991411,2cyclictest1273909-21kthreadcore07:20:590
1254538991411,2cyclictest1254536-21cyclictest09:05:530
3240591134,2phc2sys0-21swapper/310:40:253
3240591130,3phc2sys0-21swapper/310:57:053
3240591130,2phc2sys0-21swapper/311:32:393
3240591130,2phc2sys0-21swapper/310:37:583
3240591130,2phc2sys0-21swapper/310:17:473
3240591130,2phc2sys0-21swapper/309:19:483
3240591130,1phc2sys0-21swapper/309:26:473
1254541991311,1cyclictest0-21swapper/208:10:532
1254541991311,1cyclictest0-21swapper/207:40:552
1254541991310,1cyclictest0-21swapper/210:30:112
125454099139,3cyclictest1371766-21kthreadcore08:40:591
1254540991310,2cyclictest1272387-21kthreadcore07:20:581
1254540991310,2cyclictest1-21systemd07:16:071
125453899130,9cyclictest1363422-21grep08:35:580
3240591124,2phc2sys0-21swapper/312:05:583
3240591124,2phc2sys0-21swapper/308:05:553
3240591123,2phc2sys0-21swapper/307:51:043
3240591121,2phc2sys0-21swapper/309:05:013
3240591120,3phc2sys0-21swapper/309:58:133
3240591120,3phc2sys0-21swapper/307:26:033
3240591120,3phc2sys0-21swapper/307:15:493
3240591120,2phc2sys0-21swapper/311:13:233
3240591120,1phc2sys0-21swapper/310:46:293
3240591120,1phc2sys0-21swapper/308:57:443
125454099122,5cyclictest1355513-21aten2.4-expect08:30:521
125454099121,7cyclictest0-21swapper/107:10:021
125453899128,2cyclictest0-21swapper/007:10:020
3240591112,2phc2sys0-21swapper/311:58:563
3240591111,2phc2sys0-21swapper/311:05:023
3240591110,3phc2sys0-21swapper/311:16:443
3240591110,2phc2sys0-21swapper/311:25:383
3240591110,2phc2sys0-21swapper/310:24:543
3240591110,2phc2sys0-21swapper/307:45:593
3240591110,2phc2sys0-21swapper/307:20:543
3240591110,1phc2sys0-21swapper/312:33:473
3240591110,1phc2sys0-21swapper/311:44:093
3240591110,1phc2sys0-21swapper/308:39:093
3240591110,1phc2sys0-21swapper/308:22:223
125454199119,1cyclictest0-21swapper/207:10:012
3240591103,4phc2sys0-21swapper/309:40:543
3240591101,4phc2sys0-21swapper/312:35:523
3240591101,2phc2sys0-21swapper/312:15:563
3240591101,2phc2sys0-21swapper/310:10:583
3240591101,2phc2sys0-21swapper/308:50:553
3240591100,6phc2sys1403201-21chrt09:06:043
3240591100,3phc2sys0-21swapper/310:06:413
3240591100,2phc2sys0-21swapper/312:28:423
3240591100,2phc2sys0-21swapper/311:36:003
3240591100,2phc2sys0-21swapper/310:52:073
3240591100,2phc2sys0-21swapper/309:32:353
3240591100,2phc2sys0-21swapper/308:41:283
3240591100,2phc2sys0-21swapper/308:18:453
3240591100,2phc2sys0-21swapper/308:10:523
3240591100,2phc2sys0-21swapper/307:30:573
324059190,2phc2sys0-21swapper/308:25:583
324059190,2phc2sys0-21swapper/308:25:583
324059190,2phc2sys0-21swapper/308:00:383
324059190,2phc2sys0-21swapper/307:40:543
324059190,1phc2sys0-21swapper/307:39:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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