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2026-07-06 - 00:42
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Sun Jul 05, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37644692256194,48sleep00-21swapper/007:06:260
37645332250181,52sleep10-21swapper/107:07:081
383486321570,3sleep10-21swapper/109:35:231
38282202540,7sleep00-21swapper/009:27:240
179699470,3rtkit-daemon0-21swapper/112:08:461
179699460,3rtkit-daemon0-21swapper/108:16:591
179699450,3rtkit-daemon0-21swapper/112:33:231
179699450,3rtkit-daemon0-21swapper/108:32:291
179699450,3rtkit-daemon0-21swapper/107:59:221
179699440,3rtkit-daemon0-21swapper/108:35:121
179699430,3rtkit-daemon0-21swapper/111:57:351
179699430,3rtkit-daemon0-21swapper/108:03:361
179699420,3rtkit-daemon0-21swapper/111:16:031
179699410,3rtkit-daemon0-21swapper/111:42:251
179699410,3rtkit-daemon0-21swapper/108:49:311
179699410,3rtkit-daemon0-21swapper/107:34:071
179699400,3rtkit-daemon0-21swapper/111:10:151
179699400,3rtkit-daemon0-21swapper/107:45:581
179699390,3rtkit-daemon0-21swapper/111:38:291
179699390,3rtkit-daemon0-21swapper/111:05:341
179699370,4rtkit-daemon1795-21rtkit-daemon11:21:441
179699360,3rtkit-daemon1795-21rtkit-daemon10:20:220
179699360,3rtkit-daemon1795-21rtkit-daemon10:20:220
179699360,1rtkit-daemon1795-21rtkit-daemon08:10:251
179699350,3rtkit-daemon0-21swapper/010:20:021
179699350,3rtkit-daemon0-21swapper/010:20:021
179699340,3rtkit-daemon0-21swapper/110:45:000
179699330,1rtkit-daemon1795-21rtkit-daemon12:01:021
38397722320,7sleep00-21swapper/009:41:560
376492299328,5cyclictest3777482-21grep07:35:261
3764922993222,4cyclictest3880285-21/usr/sbin/munin10:35:261
179699320,1rtkit-daemon1795-21rtkit-daemon11:45:571
3764922993117,4cyclictest26-21ksoftirqd/110:05:241
179699310,1rtkit-daemon1795-21rtkit-daemon08:40:451
179699300,1rtkit-daemon1795-21rtkit-daemon12:38:391
376492299298,5cyclictest26-21ksoftirqd/110:05:001
3764922992916,11cyclictest26-21ksoftirqd/109:19:591
3764922992912,8cyclictest3899054-21latency_hist11:00:001
376492299291,15cyclictest3813666-21diskmemload12:27:331
179699290,3rtkit-daemon0-21swapper/107:12:111
39243492280,3sleep03924358-21ssh11:31:180
39243492280,3sleep03924358-21ssh11:31:170
37699922280,5sleep03769824-21python307:20:010
3764922992817,2cyclictest3926400-21latency_hist11:35:001
3764922992817,2cyclictest3926400-21latency_hist11:35:001
376492299281,4cyclictest141rcu_preempt12:10:151
179699280,8rtkit-daemon3885845-21diskmemload10:41:061
376492299275,8cyclictest26-21ksoftirqd/110:10:551
3764922992721,4cyclictest3823161-21sendmail_mailtr09:20:221
3764922992711,11cyclictest3876360-21apt-get10:30:121
3764922992622,2cyclictest66950irq/132-enp2s011:02:001
376492299261,7cyclictest3813666-21diskmemload10:28:041
3764922992614,7cyclictest66950irq/132-enp2s011:25:141
3764917992611,9cyclictest3932090-1kworker/u9:212:00:130
376492299251,7cyclictest3813666-21diskmemload09:51:121
376492299251,7cyclictest3813666-21diskmemload09:47:441
376492299251,12cyclictest3813666-21diskmemload10:48:061
3764922992510,4cyclictest3813666-21diskmemload11:53:251
3764917992511,9cyclictest3956382-1kworker/u9:012:30:130
3764917992510,9cyclictest3887835-21apt-get10:45:120
376491799250,4cyclictest3796525-21cut08:25:160
376492299242,15cyclictest3813943-21apt-get09:10:121
376492299242,15cyclictest3806042-21apt-get08:50:121
376492299241,6cyclictest3813666-21diskmemload10:52:181
376492299241,6cyclictest3813666-21diskmemload09:27:291
3764922992412,7cyclictest66950irq/132-enp2s012:20:111
376491799249,2cyclictest141rcu_preempt09:57:090
376491799248,5cyclictest0-21swapper/011:24:490
376491799248,5cyclictest0-21swapper/009:45:490
179699240,3rtkit-daemon0-21swapper/009:36:150
38991122230,20sleep03899245-21rm11:00:010
376492299234,2cyclictest141rcu_preempt07:30:011
376492299232,15cyclictest3849503-21apt-get09:55:131
376492299232,15cyclictest3809968-21apt-get09:00:141
376492299231,9cyclictest141rcu_preempt12:18:541
376491799233,13cyclictest3802145-21apt-get08:40:140
376491799232,14cyclictest3829837-21apt-get09:30:130
3764917992316,5cyclictest13-21ksoftirqd/007:40:000
376491799230,4cyclictest3800425-21grep08:35:160
376491799230,4cyclictest3794104-21sendmail08:20:000
376492299224,5cyclictest26-21ksoftirqd/109:40:511
376492299223,11cyclictest3796265-21apt-get08:25:111
376492299222,7cyclictest26-21ksoftirqd/109:09:141
376492299222,15cyclictest3782577-21apt-get07:50:111
376492299221,4cyclictest3788447-21apt-get08:05:121
3764922992212,8cyclictest3830017-21expr09:30:151
376491799229,3cyclictest0-21swapper/009:52:450
376491799228,4cyclictest0-21swapper/010:06:200
376491799222,14cyclictest3973123-21apt-get12:35:130
376491799221,4cyclictest3809325-21kworker/u8:209:12:000
3764917992214,5cyclictest13-21ksoftirqd/012:15:230
3764917992213,7cyclictest3956303-21seq12:12:560
3764917992213,7cyclictest3865030-21apt-get10:15:110
376491799221,19cyclictest3805851-21grep08:50:000
376491799221,15cyclictest3769824-21python307:20:020
376491799220,20cyclictest3930543-21sort11:40:140
179699220,3rtkit-daemon0-21swapper/108:23:071
376492299212,14cyclictest3807990-21apt-get08:55:111
376492299212,13cyclictest3778048-21apt-get07:40:061
376491799216,9cyclictest3861187-21apt-get10:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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