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2026-08-05 - 18:41
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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 highest latencies:
System rackeslot2.osadl.org (updated Wed Aug 05, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71757121000,2sleep30-21swapper/312:25:453
4871552960,2sleep30-21swapper/309:50:413
7289312310,2sleep20-21swapper/212:33:572
44748499264,20cyclictest191rcu_preempt12:05:461
447483992520,4cyclictest456541-21wc07:55:010
447483992513,5cyclictest682476-21kthreadcore12:00:490
447483992510,6cyclictest0-21swapper/012:25:220
447484992414,3cyclictest695972-21kthreadcore12:10:451
44748499233,9cyclictest0-21swapper/111:10:021
44748499232,12cyclictest711762-21tr12:20:451
44748499231,8cyclictest640710-21ssh11:35:231
447484992316,2cyclictest191rcu_preempt11:45:461
447484992315,3cyclictest36-21ksoftirqd/109:25:011
447484992314,1cyclictest191rcu_preempt07:15:021
44748399239,6cyclictest0-21swapper/008:20:010
447483992317,2cyclictest664-21dbus-daemon07:20:020
447483992316,2cyclictest0-21swapper/011:24:520
44748399231,18cyclictest602608-21ssh11:10:220
447483992215,2cyclictest0-21swapper/010:10:010
447483992213,5cyclictest574542-21kthreadcore10:50:460
447483992213,5cyclictest492010-21gltestperf09:55:430
447485992118,1cyclictest0-21swapper/209:25:012
44748499219,7cyclictest36-21ksoftirqd/110:20:011
447484992118,2cyclictest1-21systemd12:16:311
447484992117,2cyclictest191rcu_preempt11:30:011
447484992112,4cyclictest0-21swapper/109:40:021
447484992110,5cyclictest447481-21cyclictest10:05:401
44748499210,9cyclictest542849-21unin-run10:30:021
44748499210,6cyclictest617132-21ssh11:20:021
447483992115,2cyclictest1-21systemd10:35:010
44748499209,3cyclictest191rcu_preempt10:20:221
44748499208,7cyclictest36-21ksoftirqd/111:05:011
44748499208,7cyclictest36-21ksoftirqd/108:00:021
44748499208,7cyclictest36-21ksoftirqd/107:20:011
44748499207,4cyclictest36-21ksoftirqd/108:35:011
447484992018,1cyclictest572733-21apt10:50:241
447484992015,1cyclictest191rcu_preempt09:34:501
447484992015,1cyclictest191rcu_preempt09:20:021
447484992014,2cyclictest191rcu_preempt12:30:021
447484992014,2cyclictest191rcu_preempt12:00:481
447484992014,1cyclictest191rcu_preempt11:15:021
447484992012,4cyclictest1306-21mta-sts-daemon11:20:221
1157598200,8rtkit-daemon1309-21mta-sts-daemon10:27:300
4715242190,2sleep30-21swapper/309:20:433
44748499198,6cyclictest36-21ksoftirqd/110:05:031
44748499194,9cyclictest454772-21systemd-run07:45:021
44748499193,11cyclictest664-21dbus-daemon08:55:011
44748499192,11cyclictest544597-21kthreadcore10:30:461
44748499192,11cyclictest517618-21cut10:10:461
447484991916,2cyclictest0-21swapper/110:45:011
447484991914,1cyclictest191rcu_preempt11:00:011
447484991912,1cyclictest191rcu_preempt08:26:551
447484991910,1cyclictest191rcu_preempt09:30:011
44748499190,8cyclictest553512-21cut10:35:471
1157598190,3rtkit-daemon1300-21mta-sts-daemon08:42:101
447485991815,1cyclictest0-21swapper/209:55:462
44748499189,4cyclictest36-21ksoftirqd/107:35:021
44748499188,3cyclictest36-21ksoftirqd/109:50:411
44748499187,5cyclictest0-21swapper/109:40:061
44748499185,5cyclictest0-21swapper/109:55:391
44748499183,7cyclictest36-21ksoftirqd/109:48:441
44748499182,6cyclictest638515-21switchtime11:30:501
447484991815,2cyclictest729344-21systemd12:35:011
447484991815,2cyclictest684-21systemd-logind09:00:021
447484991814,3cyclictest684-21systemd-logind08:25:011
447484991812,2cyclictest191rcu_preempt11:50:421
447484991812,2cyclictest1157598rtkit-daemon07:53:511
447484991810,3cyclictest36-21ksoftirqd/109:15:021
447484991810,3cyclictest36-21ksoftirqd/107:50:011
447484991810,3cyclictest36-21ksoftirqd/107:10:021
44748399187,6cyclictest0-21swapper/011:33:460
44748399187,6cyclictest0-21swapper/011:25:280
447483991816,1cyclictest594489-21cron11:05:000
447483991815,2cyclictest595278-21aten2.4-expect11:05:270
447483991815,2cyclictest461543-21cut08:30:010
3240591180,2phc2sys0-21swapper/311:31:593
447485991715,1cyclictest0-21swapper/208:50:022
447485991715,1cyclictest0-21swapper/207:55:012
447485991714,1cyclictest0-21swapper/211:45:442
447485991714,1cyclictest0-21swapper/210:30:432
447485991714,1cyclictest0-21swapper/208:00:012
44748499179,4cyclictest736272-21sh12:38:421
44748499178,4cyclictest649137-21irqcore11:40:431
44748499177,3cyclictest1300-21mta-sts-daemon10:46:031
44748499176,4cyclictest0-21swapper/108:49:561
44748499171,6cyclictest670822-21cstates11:55:391
447484991714,2cyclictest664-21dbus-daemon07:25:031
447484991711,2cyclictest191rcu_preempt08:40:021
44748399179,7cyclictest0-21swapper/011:40:430
447483991715,1cyclictest700077-21/usr/sbin/munin12:15:500
447483991714,2cyclictest671793-21sed11:55:430
447483991714,2cyclictest454504-21sh07:45:000
447483991714,2cyclictest0-21swapper/008:00:010
447483991713,3cyclictest714-21gdbus09:45:010
447483991713,2cyclictest0-21swapper/008:35:010
447483991710,6cyclictest0-21swapper/010:00:500
3240591170,2phc2sys0-21swapper/311:01:333
3240591170,2phc2sys0-21swapper/309:28:103
447485991614,1cyclictest0-21swapper/212:25:012
447485991614,1cyclictest0-21swapper/211:15:022
447485991613,1cyclictest0-21swapper/212:35:402
447485991613,1cyclictest0-21swapper/212:27:342
447485991613,1cyclictest0-21swapper/212:05:452
447485991613,1cyclictest0-21swapper/211:30:492
447485991613,1cyclictest0-21swapper/211:25:152
447485991613,1cyclictest0-21swapper/211:24:522
447485991613,1cyclictest0-21swapper/209:10:012
447485991613,1cyclictest0-21swapper/207:45:012
447485991613,1cyclictest0-21swapper/207:40:002
447485991611,3cyclictest0-21swapper/208:25:012
44748499168,3cyclictest36-21ksoftirqd/108:20:011
44748499168,3cyclictest36-21ksoftirqd/108:10:021
44748499166,5cyclictest0-21swapper/108:00:421
447484991613,2cyclictest664-21dbus-daemon08:15:021
447484991611,1cyclictest191rcu_preempt07:29:141
44748399167,4cyclictest0-21swapper/012:35:480
44748399167,2cyclictest0-21swapper/009:53:050
44748399166,5cyclictest660567-21pmu-power11:45:490
44748399166,5cyclictest0-21swapper/010:55:460
44748399165,6cyclictest0-21swapper/010:40:440
44748399162,4cyclictest491rcuog/210:18:350
447483991613,2cyclictest712605-21wc12:20:480
447483991613,2cyclictest699823-21sh12:15:010
447483991613,2cyclictest664-21dbus-daemon07:25:020
447483991613,2cyclictest473222-21apt-key09:25:010
447483991613,2cyclictest463032-21latency_hist08:40:020
447483991613,2cyclictest448233-21irqcore07:15:020
447483991613,2cyclictest268-21systemd-journal08:25:020
447483991613,2cyclictest1-21systemd07:33:100
447483991613,2cyclictest0-21swapper/011:20:010
447483991613,2cyclictest0-21swapper/007:30:020
3240591160,2phc2sys0-21swapper/310:17:363
3240591160,2phc2sys0-21swapper/310:05:423
3240591160,1phc2sys0-21swapper/310:52:273
44748599151,7cyclictest0-21swapper/210:35:242
447485991513,1cyclictest0-21swapper/207:25:032
447485991512,1cyclictest0-21swapper/211:55:502
447485991512,1cyclictest0-21swapper/211:05:012
447485991512,1cyclictest0-21swapper/210:05:012
447485991512,1cyclictest0-21swapper/209:15:012
447485991511,2cyclictest0-21swapper/211:50:402
44748599151,10cyclictest0-21swapper/210:25:392
44748599150,10cyclictest564967-21turbostat10:45:002
447484991511,1cyclictest451779-21kworker/1:0+events_freezable09:01:191
447484991510,1cyclictest191rcu_preempt07:36:311
44748399156,4cyclictest0-21swapper/009:36:560
44748399151,9cyclictest0-21swapper/012:30:410
447483991512,2cyclictest668377-21timerwakeupswit11:50:500
447483991512,2cyclictest535378-21sh10:25:010
447483991512,2cyclictest513961-21cpuspeed10:10:390
447483991512,2cyclictest458996-21systemd-run08:10:020
44748399150,13cyclictest483424-21latency_hist09:50:010
3240591150,2phc2sys0-21swapper/312:19:033
3240591150,1phc2sys0-21swapper/311:14:433
3240591150,1phc2sys0-21swapper/310:13:273
3240491150,2ptp4l0-21swapper/310:35:033
44748599149,3cyclictest0-21swapper/210:45:492
44748599141,6cyclictest0-21swapper/211:40:022
447485991412,1cyclictest0-21swapper/211:40:432
447485991411,1cyclictest0-21swapper/212:01:222
447485991411,1cyclictest0-21swapper/211:05:422
447485991411,1cyclictest0-21swapper/210:55:012
447485991411,1cyclictest0-21swapper/210:20:122
447485991411,1cyclictest0-21swapper/210:05:512
447485991411,1cyclictest0-21swapper/209:40:202
447485991411,1cyclictest0-21swapper/209:40:012
447485991411,1cyclictest0-21swapper/209:27:382
447485991411,1cyclictest0-21swapper/207:15:012
44748499147,3cyclictest36-21ksoftirqd/109:06:531
44748399144,9cyclictest476421-21kworker/u16:1+nfsiod09:32:560
44748399144,5cyclictest463846-21grep08:45:020
447483991411,2cyclictest686551-21irqrtprio12:05:430
447483991411,2cyclictest552801-21kthreadcore10:35:460
447483991411,2cyclictest471094-21latency_hist09:20:010
447483991411,2cyclictest1309-21mta-sts-daemon10:45:540
447483991411,2cyclictest1300-21mta-sts-daemon09:10:300
447483991411,2cyclictest1300-21mta-sts-daemon09:00:250
447483991411,2cyclictest11561-21sendmail-mta09:07:450
447483991410,3cyclictest646035-21timerandwakeup11:35:510
447483991410,3cyclictest475224-21grep09:30:000
3240591142,2phc2sys0-21swapper/307:22:153
3240591140,2phc2sys0-21swapper/311:50:353
3240591140,2phc2sys0-21swapper/311:21:013
3240591140,1phc2sys0-21swapper/311:16:403
3240591140,1phc2sys0-21swapper/309:59:093
3240591140,1phc2sys0-21swapper/308:05:113
447485991311,1cyclictest0-21swapper/211:15:442
447485991311,1cyclictest0-21swapper/208:35:012
447485991311,1cyclictest0-21swapper/207:30:012
447485991310,2cyclictest0-21swapper/208:55:032
447485991310,1cyclictest0-21swapper/212:19:072
447485991310,1cyclictest0-21swapper/210:55:422
447485991310,1cyclictest0-21swapper/210:15:462
447485991310,1cyclictest0-21swapper/210:10:492
447485991310,1cyclictest0-21swapper/209:50:352
447485991310,1cyclictest0-21swapper/208:38:152
44748399136,5cyclictest268-21systemd-journal07:10:030
447483991310,2cyclictest0-21swapper/008:50:030
447483991310,2cyclictest0-21swapper/007:50:010
3240591130,4phc2sys0-21swapper/309:32:213
1157598130,3rtkit-daemon1307-21mta-sts-daemon08:54:360
44748599129,1cyclictest0-21swapper/212:10:452
44748599129,1cyclictest0-21swapper/209:46:482
44748599129,1cyclictest0-21swapper/209:01:022
44748599129,1cyclictest0-21swapper/208:16:202
44748599129,1cyclictest0-21swapper/208:03:012
447485991210,1cyclictest0-21swapper/208:15:022
447485991210,1cyclictest0-21swapper/207:15:032
447485991210,1cyclictest0-21swapper/207:10:032
44748399129,2cyclictest684-21systemd-logind08:15:010
44748399129,2cyclictest1-21systemd08:58:040
44748399129,2cyclictest0-21swapper/007:40:020
447483991210,1cyclictest0-21swapper/008:05:010
3240591127,2phc2sys0-21swapper/312:10:493
3240591123,2phc2sys0-21swapper/310:25:463
3240591123,2phc2sys0-21swapper/310:20:493
3240591120,3phc2sys0-21swapper/310:45:223
3240591120,2phc2sys0-21swapper/312:30:223
3240591120,2phc2sys0-21swapper/310:03:553
3240591120,2phc2sys0-21swapper/309:39:033
3240591120,2phc2sys0-21swapper/308:34:363
3240591120,1phc2sys0-21swapper/308:55:163
44748599119,1cyclictest0-21swapper/208:55:122
44748599119,1cyclictest0-21swapper/208:41:562
44748599119,1cyclictest0-21swapper/208:29:382
44748599119,1cyclictest0-21swapper/208:05:042
44748599119,1cyclictest0-21swapper/207:45:362
44748599119,1cyclictest0-21swapper/207:33:192
44748599118,1cyclictest0-21swapper/209:30:432
3240591117,1phc2sys0-21swapper/311:26:033
3240591112,2phc2sys0-21swapper/310:55:483
3240591111,3phc2sys0-21swapper/312:35:533
3240591111,2phc2sys0-21swapper/309:45:013
3240591110,4phc2sys0-21swapper/311:35:233
3240591110,1phc2sys0-21swapper/310:42:053
3240591110,1phc2sys0-21swapper/309:02:293
44748599108,1cyclictest0-21swapper/209:15:192
3240591102,3phc2sys0-21swapper/311:10:023
3240591102,1phc2sys0-21swapper/311:41:053
3240591101,4phc2sys0-21swapper/312:00:243
3240591101,3phc2sys0-21swapper/311:48:023
3240591101,2phc2sys0-21swapper/310:37:523
3240591101,2phc2sys0-21swapper/309:50:023
3240591101,2phc2sys0-21swapper/309:12:313
3240591101,2phc2sys0-21swapper/309:10:023
3240591101,2phc2sys0-21swapper/307:35:023
3240591100,2phc2sys0-21swapper/312:21:093
3240591100,2phc2sys0-21swapper/312:05:223
3240591100,2phc2sys0-21swapper/309:17:123
3240591100,2phc2sys0-21swapper/308:44:563
3240591100,2phc2sys0-21swapper/308:25:023
3240591100,1phc2sys0-21swapper/308:26:553
324059190,2phc2sys0-21swapper/311:56:003
324059190,2phc2sys0-21swapper/308:16:413
324059190,2phc2sys0-21swapper/307:55:293
324059190,2phc2sys0-21swapper/307:37:503
324059190,2phc2sys0-21swapper/307:19:353
324059190,2phc2sys0-21swapper/307:15:023
324059190,1phc2sys0-21swapper/308:53:433
324059181,2phc2sys0-21swapper/307:50:083
324059180,2phc2sys0-21swapper/308:10:363
324059180,2phc2sys0-21swapper/307:25:043
324059180,1phc2sys0-21swapper/308:46:383
324059180,1phc2sys0-21swapper/308:37:573
324059180,1phc2sys0-21swapper/308:04:553
324059180,1phc2sys0-21swapper/307:45:033
324059180,1phc2sys0-21swapper/307:44:273
324059170,2phc2sys0-21swapper/307:05:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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