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2026-04-22 - 23:02
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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 Wed Apr 22, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36832512271192,29sleep00-21swapper/007:06:260
36833662259186,58sleep10-21swapper/107:07:411
37218292790,1chrt3720895-21/usr/sbin/munin08:40:231
38379532630,6sleep10-21swapper/111:39:561
179699430,3rtkit-daemon0-21swapper/008:51:450
368370399410,2cyclictest893-21snmpd10:57:221
3683703994036,2cyclictest3732448-21perf09:10:001
368370399380,2cyclictest3771550-21gpgv10:05:031
3683695993833,3cyclictest3679545-21kworker/0:007:20:170
38565632350,13sleep013-21ksoftirqd/012:05:160
3683695993416,12cyclictest3859573-21apt-get12:10:140
3683703993317,4cyclictest788-21systemd-logind12:25:011
3683703993027,2cyclictest66950irq/132-enp2s007:12:431
368369599308,3cyclictest141rcu_preempt11:30:220
3683695993023,5cyclictest3783804-21rm10:20:550
3683695993016,12cyclictest13-21ksoftirqd/011:10:000
179699300,6rtkit-daemon3732425-21diskmemload12:02:190
179699300,4rtkit-daemon1795-21rtkit-daemon10:26:281
3683703992825,2cyclictest3806741-21kworker/1:011:25:041
3683695992825,2cyclictest66950irq/132-enp2s011:14:490
3683695992813,9cyclictest3726761-21apt-get08:55:140
179699280,3rtkit-daemon0-21swapper/009:29:320
368370399278,4cyclictest26-21ksoftirqd/111:49:021
3683703992711,4cyclictest26-21ksoftirqd/112:30:001
368369599277,17cyclictest13-21ksoftirqd/009:30:170
37016712260,3sleep13701711-21ntp_states07:50:201
368370399263,5cyclictest261ksoftirqd/111:40:481
368370399261,6cyclictest3768199-21expr10:00:181
3683703992613,7cyclictest3692248-21apt-get07:30:121
368369599265,3cyclictest141rcu_preempt11:55:190
368369599265,3cyclictest141rcu_preempt11:55:180
3683695992615,9cyclictest13-21ksoftirqd/011:40:000
3683695992613,7cyclictest66950irq/132-enp2s009:45:110
3683695992610,9cyclictest3730678-21apt-get09:05:130
368369599260,8cyclictest141rcu_preempt11:05:020
179699260,19rtkit-daemon0-21swapper/008:26:360
368370399259,2cyclictest141rcu_preempt12:18:491
368369599256,17cyclictest13-21ksoftirqd/008:30:250
368369599253,5cyclictest131ksoftirqd/009:41:180
368369599252,7cyclictest3736353-21apt-get09:15:140
3683695992512,7cyclictest66950irq/132-enp2s011:40:130
3683695992512,7cyclictest3873301-21apt-get12:30:120
36850612240,4sleep03685058-21grep07:10:240
368370399243,5cyclictest3746642-21ls09:30:001
368370399242,4cyclictest26-21ksoftirqd/109:47:381
3683703992418,4cyclictest26-21ksoftirqd/112:10:011
368370399241,3cyclictest3806250-21sh10:55:001
3683703992411,3cyclictest141rcu_preempt12:35:221
368369599246,2cyclictest141rcu_preempt12:25:250
368369599243,3cyclictest141rcu_preempt11:29:240
368369599243,2cyclictest141rcu_preempt07:15:040
368369599242,16cyclictest3740073-21apt-get09:20:130
368369599242,14cyclictest3750530-21apt-get09:35:140
368369599241,4cyclictest141rcu_preempt08:40:000
368369599241,2cyclictest141rcu_preempt10:10:120
3683695992412,6cyclictest3778675-21apt-get10:15:120
3683695992411,11cyclictest13-21ksoftirqd/010:50:220
368369599240,4cyclictest3846242-21/usr/sbin/munin11:50:170
179699240,5rtkit-daemon3720913-21apt-get08:40:130
179699240,3rtkit-daemon0-21swapper/111:05:241
179699240,3rtkit-daemon0-21swapper/012:38:030
368370399234,2cyclictest141rcu_preempt09:54:541
368370399234,17cyclictest3827219-21apt-get11:25:011
368370399232,15cyclictest3698995-21apt-get07:45:141
368370399232,13cyclictest3686375-21apt-get07:15:101
368370399231,6cyclictest3696061-21python307:40:021
3683703992315,6cyclictest3690612-21fschecks_time07:25:171
368370399231,4cyclictest141rcu_preempt09:57:161
368370399231,2cyclictest141rcu_preempt11:00:111
368370399230,6cyclictest3724639-21unin-run08:50:011
368369599234,2cyclictest141rcu_preempt10:05:200
368369599230,4cyclictest3869736-21dump-pmu-power12:25:000
179699230,3rtkit-daemon0-21swapper/108:09:021
179699230,3rtkit-daemon0-21swapper/012:17:560
179699230,3rtkit-daemon0-21swapper/011:20:040
179699230,3rtkit-daemon0-21swapper/009:13:380
179699230,3rtkit-daemon0-21swapper/009:00:450
179699230,3rtkit-daemon0-21swapper/008:45:530
179699230,3rtkit-daemon0-21swapper/007:57:240
179699230,16rtkit-daemon0-21swapper/110:33:281
37115992220,4sleep03711597-21seq08:15:170
37115992220,4sleep03711597-21seq08:15:170
368370399228,4cyclictest0-21swapper/109:36:351
368370399224,11cyclictest3711113-21apt-get08:15:131
368370399224,11cyclictest3711113-21apt-get08:15:131
368370399223,3cyclictest3732425-21diskmemload09:23:581
368370399223,2cyclictest141rcu_preempt12:32:491
368370399223,2cyclictest141rcu_preempt12:04:541
368370399223,2cyclictest141rcu_preempt11:30:171
368370399222,2cyclictest141rcu_preempt12:14:361
368370399222,2cyclictest141rcu_preempt09:15:191
368370399222,13cyclictest3746897-21apt-get09:30:141
368370399222,13cyclictest3724812-21apt-get08:50:141
368370399222,13cyclictest3704863-21apt-get08:00:111
368370399221,3cyclictest141rcu_preempt07:45:001
368370399221,2cyclictest141rcu_preempt11:10:291
368370399221,14cyclictest3709166-21apt-get08:10:121
368370399220,2cyclictest141rcu_preempt09:41:051
368369599227,2cyclictest13-21ksoftirqd/010:59:460
368369599224,9cyclictest13-21ksoftirqd/010:25:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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