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2026-01-11 - 20:34
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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 Jan 11, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3988342268191,28sleep10-21swapper/107:08:001
3989532265186,29sleep00-21swapper/007:09:190
59521221660,2sleep10-21swapper/112:27:091
5429572860,4sleep00-21swapper/011:15:190
179699460,3rtkit-daemon0-21swapper/012:34:310
179699460,3rtkit-daemon0-21swapper/012:24:400
179699450,3rtkit-daemon0-21swapper/012:19:110
179699440,3rtkit-daemon0-21swapper/012:11:050
179699440,3rtkit-daemon0-21swapper/010:59:320
179699440,3rtkit-daemon0-21swapper/010:54:450
179699440,3rtkit-daemon0-21swapper/009:19:300
179699430,3rtkit-daemon0-21swapper/010:48:200
179699420,3rtkit-daemon0-21swapper/011:04:300
179699420,3rtkit-daemon0-21swapper/009:50:550
179699420,3rtkit-daemon0-21swapper/009:46:060
179699410,3rtkit-daemon0-21swapper/012:29:160
179699410,3rtkit-daemon0-21swapper/010:41:080
179699410,3rtkit-daemon0-21swapper/009:44:060
179699400,4rtkit-daemon447961-21diskmemload10:32:310
179699400,3rtkit-daemon0-21swapper/108:41:340
179699400,3rtkit-daemon0-21swapper/012:38:290
179699390,3rtkit-daemon0-21swapper/011:06:420
399152993612,7cyclictest26-21ksoftirqd/110:35:011
39915299360,2cyclictest422321-1kworker/1:1H08:05:371
399147993414,5cyclictest13-21ksoftirqd/009:35:010
39915299330,31cyclictest0-21swapper/107:37:411
179699330,4rtkit-daemon1795-21rtkit-daemon11:34:581
399147993218,2cyclictest484603-21rm09:56:360
39915299317,4cyclictest141rcu_preempt10:45:141
399152993125,4cyclictest565698-21rm11:45:271
399152993125,4cyclictest548637-21chrt11:23:061
399152993122,7cyclictest418974-21grep07:55:191
399152993113,4cyclictest26-21ksoftirqd/112:30:011
39915299310,8cyclictest26-21ksoftirqd/107:40:231
399147993112,5cyclictest13-21ksoftirqd/008:25:000
399152993014,14cyclictest261ksoftirqd/107:15:011
39914799308,6cyclictest13-21ksoftirqd/007:35:010
39915299285,4cyclictest11systemd09:35:001
39915299281,5cyclictest141rcu_preempt12:35:141
39914799288,5cyclictest13-21ksoftirqd/007:15:170
39914799287,6cyclictest13-21ksoftirqd/009:35:120
39914799286,8cyclictest13-21ksoftirqd/008:16:120
39914799285,7cyclictest13-21ksoftirqd/011:47:280
39914799282,6cyclictest549739-21apt-get11:25:130
39915299276,3cyclictest141rcu_preempt09:40:001
39915299276,11cyclictest26-21ksoftirqd/112:10:141
39915299274,11cyclictest141rcu_preempt09:50:011
399152992724,2cyclictest66950irq/132-enp2s012:02:061
399152992719,6cyclictest26-21ksoftirqd/110:15:011
39915299271,5cyclictest141rcu_preempt09:10:131
399152992715,10cyclictest261ksoftirqd/111:20:011
399152992711,4cyclictest26-21ksoftirqd/110:35:111
39914799279,8cyclictest13-21ksoftirqd/010:36:240
39914799278,7cyclictest13-21ksoftirqd/007:50:230
39914799276,6cyclictest13-21ksoftirqd/009:25:000
39914799276,6cyclictest13-21ksoftirqd/008:45:250
39914799274,8cyclictest13-21ksoftirqd/011:57:390
39915299268,17cyclictest26-21ksoftirqd/112:25:001
39915299265,2cyclictest141rcu_preempt11:41:591
39915299265,2cyclictest141rcu_preempt11:41:581
39915299264,6cyclictest26-21ksoftirqd/109:40:151
39915299263,3cyclictest141rcu_preempt12:05:121
39915299262,4cyclictest141rcu_preempt10:50:131
39915299261,3cyclictest141rcu_preempt11:50:121
399152992611,3cyclictest26-21ksoftirqd/109:25:141
39914799265,5cyclictest13-21ksoftirqd/007:30:000
39914799264,3cyclictest141rcu_preempt08:00:220
399147992622,2cyclictest5779412sleep012:03:120
399152992522,2cyclictest66950irq/132-enp2s011:14:331
399152992518,5cyclictest26-21ksoftirqd/110:15:031
39915299251,4cyclictest141rcu_preempt10:40:121
39915299251,4cyclictest141rcu_preempt10:05:121
39914799259,3cyclictest433206-21needreboot08:30:200
39914799255,5cyclictest13-21ksoftirqd/012:05:230
39914799255,10cyclictest0-21swapper/010:22:060
39914799254,6cyclictest13-21ksoftirqd/011:51:180
39914799252,6cyclictest13-21ksoftirqd/011:39:440
39914799252,16cyclictest412469-21apt-get07:40:130
399147992516,6cyclictest13-21ksoftirqd/009:25:010
39915299242,5cyclictest261ksoftirqd/111:01:491
39915299242,15cyclictest438393-21apt-get08:45:141
39915299241,6cyclictest479812-21latency09:50:181
399152992412,8cyclictest571612-21apt-get11:55:151
399152992411,3cyclictest26-21ksoftirqd/111:35:221
39915299240,4cyclictest284-20systemd-journal10:20:001
39915299240,10cyclictest0-21swapper/109:05:211
39914799248,11cyclictest505130-21apt-get10:25:150
39914799247,6cyclictest399805-21kernelversion07:10:190
39914799246,6cyclictest13-21ksoftirqd/008:35:150
39914799246,5cyclictest13-21ksoftirqd/010:00:220
39914799246,4cyclictest0-21swapper/008:53:400
39914799243,15cyclictest546090-21apt-get11:20:130
399147992415,5cyclictest447961-21diskmemload11:12:000
399147992410,3cyclictest13-21ksoftirqd/008:05:230
179699240,3rtkit-daemon0-21swapper/109:57:071
39915299239,3cyclictest26-21ksoftirqd/109:15:131
399152992311,3cyclictest26-21ksoftirqd/110:00:191
399152992311,2cyclictest26-21ksoftirqd/110:55:141
39915299230,4cyclictest424978-21fschecks_time08:10:161
39914799237,4cyclictest399138-21cyclictest07:20:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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