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2026-05-15 - 21:52
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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 Fri May 15, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39518592264186,28sleep00-21swapper/007:06:490
39520252247188,45sleep10-21swapper/107:08:341
41468892640,4sleep04146862-21ssh12:25:020
40644872590,4sleep00-21swapper/010:35:140
179699500,3rtkit-daemon0-21swapper/109:59:021
40550972460,4sleep10-21swapper/110:20:501
179699460,3rtkit-daemon1795-21rtkit-daemon07:10:141
179699430,3rtkit-daemon0-21swapper/008:14:570
40629722410,4sleep10-21swapper/110:32:241
3952308993924,3cyclictest4158132-21sh12:39:591
179699390,3rtkit-daemon0-21swapper/007:31:301
3952308993531,2cyclictest66950irq/132-enp2s011:17:571
395230599321,7cyclictest141rcu_preempt11:50:140
3952308993127,2cyclictest39945072sleep108:52:401
3952308993122,7cyclictest4087224-21expr11:05:141
3952308993122,7cyclictest4087224-21expr11:05:141
3952308992925,2cyclictest4124155-21taskset11:53:231
395230899291,5cyclictest141rcu_preempt10:35:131
3952308992914,8cyclictest4072184-21apt-get10:45:131
3952305992915,10cyclictest3973448-21apt-get08:00:120
41253262280,13sleep126-21ksoftirqd/111:55:151
179699280,6rtkit-daemon4109872-21fschecks_time11:35:161
179699280,20rtkit-daemon0-21swapper/109:14:341
395230599274,6cyclictest131ksoftirqd/010:17:220
395230899268,16cyclictest26-21ksoftirqd/111:50:021
395230599265,13cyclictest4038361-21apt-get10:00:140
395230599264,5cyclictest131ksoftirqd/011:55:540
3952305992612,9cyclictest4034172-1kworker/u9:210:25:120
179699260,3rtkit-daemon0-21swapper/012:15:550
179699260,18rtkit-daemon4042361-21dpkg10:05:031
179699260,18rtkit-daemon0-21swapper/007:10:290
395230899256,17cyclictest26-21ksoftirqd/109:30:161
395230899255,17cyclictest0-21swapper/111:40:011
395230899254,16cyclictest141rcu_preempt09:00:211
395230899253,14cyclictest4079681-21apt-get10:55:121
395230899252,17cyclictest4083328-21apt-get11:00:121
3952308992514,9cyclictest261ksoftirqd/112:10:001
3952308992512,7cyclictest66950irq/132-enp2s011:45:131
395230899251,17cyclictest4075912-21apt-get10:50:121
395230599258,4cyclictest0-21swapper/009:27:410
395230599254,5cyclictest131ksoftirqd/009:58:200
395230599254,3cyclictest141rcu_preempt08:05:190
395230599253,15cyclictest4027242-21apt-get09:45:120
3952305992520,3cyclictest3986649-21anacron08:32:170
3952305992514,8cyclictest4113953-21df_inode11:40:160
39619292240,3sleep03961925-21grep07:30:200
395230899249,10cyclictest4085467-21kworker/u8:211:25:131
395230899246,9cyclictest26-21ksoftirqd/112:25:021
395230899244,18cyclictest0-21swapper/110:40:221
395230899243,3cyclictest141rcu_preempt08:15:221
395230899242,5cyclictest261ksoftirqd/110:00:091
3952308992412,10cyclictest26-21ksoftirqd/112:05:011
395230899240,22cyclictest4143651-21fschecks_time12:20:181
395230599245,2cyclictest4000623-21diskmemload11:00:060
395230599245,2cyclictest141rcu_preempt12:10:320
395230599242,9cyclictest3979295-21apt-get08:15:120
395230599242,3cyclictest141rcu_preempt09:30:240
3952305992419,3cyclictest3958559-21tail07:20:250
395230599241,6cyclictest131ksoftirqd/010:33:360
395230599241,4cyclictest141rcu_preempt11:40:020
395230599240,4cyclictest4108937-21python311:35:000
395230599240,3cyclictest141rcu_preempt10:55:210
179699240,6rtkit-daemon4154785-21apt-get12:35:100
179699240,4rtkit-daemon1795-21rtkit-daemon12:12:361
179699240,3rtkit-daemon0-21swapper/111:20:381
179699240,3rtkit-daemon0-21swapper/109:16:191
179699240,3rtkit-daemon0-21swapper/008:37:130
179699240,17rtkit-daemon0-21swapper/108:38:411
395230899236,3cyclictest141rcu_preempt09:45:181
395230899235,2cyclictest141rcu_preempt08:00:001
395230899233,11cyclictest4090820-21apt-get11:10:111
3952308992320,2cyclictest66950irq/132-enp2s012:15:171
3952308992316,5cyclictest3954410-21fschecks_time07:15:021
3952308992313,6cyclictest66950irq/132-enp2s009:35:111
395230899231,19cyclictest3973271-21cnf-update-db08:00:031
3952308992310,8cyclictest4012161-21apt-get09:25:131
395230599236,3cyclictest141rcu_preempt12:30:000
395230599236,12cyclictest3971069-21apt-get07:55:130
395230599234,2cyclictest141rcu_preempt09:25:000
395230599233,3cyclictest141rcu_preempt11:50:010
395230599233,3cyclictest141rcu_preempt11:50:000
395230599233,11cyclictest4132373-21apt-get12:05:140
395230599233,11cyclictest3963183-21apt-get07:35:140
395230599232,2cyclictest141rcu_preempt09:41:340
395230599232,14cyclictest4151206-21apt-get12:30:130
395230599232,14cyclictest3983220-21apt-get08:25:150
395230599232,14cyclictest3981271-21apt-get08:20:130
3952305992318,3cyclictest4068239-21apt-key10:40:020
3952305992310,9cyclictest3969119-21apt-get07:50:130
395230899224,17cyclictest4034396-21munin-run09:55:011
395230899223,17cyclictest3964808-31updatedb.mlocat07:38:211
3952308992210,8cyclictest3985368-21df08:30:141
395230899220,4cyclictest788-21systemd-logind11:35:001
395230599225,11cyclictest3954951-21apt-get07:15:140
395230599224,11cyclictest4087038-21apt-get11:05:130
395230599224,11cyclictest4087038-21apt-get11:05:130
395230599223,2cyclictest141rcu_preempt09:50:130
395230599223,13cyclictest4090820-21apt-get11:10:120
395230599223,12cyclictest3991047-21apt-get08:45:120
395230599223,11cyclictest4128836-21apt-get12:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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