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2026-04-25 - 10:05
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Sat Apr 25, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35143942306271,20sleep10-21swapper/119:06:181
35143942306271,20sleep10-21swapper/119:06:181
35145982245203,28sleep00-21swapper/019:08:290
35145982245203,28sleep00-21swapper/019:08:290
179699770,25rtkit-daemon3685213-21ssh23:47:060
35358352480,1chrt3535539-21/usr/sbin/munin20:00:161
179699440,3rtkit-daemon0-21swapper/000:33:190
179699410,3rtkit-daemon0-21swapper/019:38:010
36815382390,1sleep00-21swapper/023:42:010
36800422390,4sleep13680044-21kernelversion23:40:191
3514864993529,4cyclictest3611706-21ssh22:11:451
179699340,5rtkit-daemon3549272-21apt-get20:35:120
3514864993229,2cyclictest66950irq/132-enp2s022:58:001
3514860993216,10cyclictest3652309-21apt-get23:05:130
35775962300,5sleep10-21swapper/121:27:371
3514864993028,1cyclictest66950irq/132-enp2s000:05:271
3514860993017,11cyclictest3618028-40apt-check22:20:110
179699300,6rtkit-daemon3562022-21memory21:05:170
3514864992926,2cyclictest66950irq/132-enp2s021:22:371
3514864992925,2cyclictest66950irq/132-enp2s000:20:101
3514864992920,7cyclictest3668351-21/usr/sbin/munin23:25:201
351486099297,3cyclictest141rcu_preempt22:31:520
3514860992923,4cyclictest3687699-21grep23:50:200
37061552280,10sleep126-21ksoftirqd/100:15:211
351486499281,22cyclictest3618001-21apt-get22:20:241
3514860992813,9cyclictest3671308-21apt-get23:30:120
3514860992813,9cyclictest3559474-21apt-get21:00:140
3514864992722,3cyclictest66950irq/132-enp2s022:36:281
3514864992713,8cyclictest66950irq/132-enp2s022:40:131
351486099273,16cyclictest3583086-21apt-get21:35:130
3514860992712,9cyclictest3588274-1kworker/u9:122:45:150
179699270,20rtkit-daemon0-21swapper/021:40:380
179699270,20rtkit-daemon0-21swapper/000:39:410
351486499268,4cyclictest0-21swapper/123:02:431
351486499266,3cyclictest141rcu_preempt22:50:251
351486499266,3cyclictest141rcu_preempt22:50:251
351486099268,4cyclictest3563179-21diskmemload22:09:010
351486099266,3cyclictest141rcu_preempt00:24:390
351486099262,15cyclictest3533584-21apt-get19:55:140
179699260,4rtkit-daemon0-21swapper/021:15:190
3514864992522,2cyclictest3590441-1kworker/1:2H22:00:001
3514864992513,9cyclictest3579923-21open_files21:30:221
351486099252,15cyclictest3537506-21apt-get20:05:130
351486099252,14cyclictest3547278-21apt-get20:30:130
3514860992511,9cyclictest3650201-1kworker/u9:023:10:110
3514860992510,9cyclictest3702041-21apt-get00:10:120
351486099250,4cyclictest3559266-21idleruntime-cro21:00:000
351486499245,17cyclictest0-21swapper/123:35:011
351486499242,14cyclictest3567489-21apt-get21:15:121
3514864992413,6cyclictest66950irq/132-enp2s022:15:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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