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2026-01-07 - 21:39
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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 Jan 07, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38940252264190,27sleep10-21swapper/107:07:141
38942242252181,27sleep00-21swapper/007:09:230
39770082670,4sleep10-21swapper/109:51:081
179699590,4rtkit-daemon1795-21rtkit-daemon11:32:310
179699560,4rtkit-daemon1795-21rtkit-daemon12:30:221
40862822550,3sleep10-21swapper/112:13:541
179699530,4rtkit-daemon1795-21rtkit-daemon11:09:471
40323472510,6sleep10-21swapper/111:04:371
179699510,4rtkit-daemon1795-21rtkit-daemon10:42:481
179699470,3rtkit-daemon1795-21rtkit-daemon09:59:590
179699460,3rtkit-daemon1795-21rtkit-daemon11:58:450
39011382440,1chrt3901137-21/usr/sbin/munin07:25:151
179699440,4rtkit-daemon1795-21rtkit-daemon07:25:460
179699400,3rtkit-daemon0-21swapper/111:30:161
179699390,3rtkit-daemon1795-21rtkit-daemon09:50:400
179699370,3rtkit-daemon1795-21rtkit-daemon10:22:150
39961042360,4sleep10-21swapper/110:15:541
389440699361,10cyclictest26-21ksoftirqd/110:50:131
389440699360,8cyclictest4036546-21apt-get11:10:151
179699360,5rtkit-daemon0-21swapper/110:36:060
179699360,3rtkit-daemon0-21swapper/110:35:311
179699360,3rtkit-daemon0-21swapper/007:54:311
389440699350,7cyclictest4067061-21apt-get11:50:191
389440699350,11cyclictest40671552gpgv11:50:011
389439899350,9cyclictest4028831-21kworker/0:111:15:010
179699350,5rtkit-daemon3920881-21grep08:15:191
179699350,3rtkit-daemon0-21swapper/112:22:521
179699350,3rtkit-daemon0-21swapper/109:07:341
179699340,4rtkit-daemon4008214-21ssh10:32:081
3894406993317,3cyclictest4001395-21ssh10:23:441
3894406993310,13cyclictest26-21ksoftirqd/109:46:021
179699330,4rtkit-daemon1795-21rtkit-daemon08:27:560
179699330,4rtkit-daemon1795-21rtkit-daemon07:32:130
179699330,4rtkit-daemon1795-21rtkit-daemon07:24:450
179699330,3rtkit-daemon1795-21rtkit-daemon09:04:411
179699330,3rtkit-daemon1795-21rtkit-daemon08:36:210
179699330,3rtkit-daemon0-21swapper/009:17:441
3894406993217,2cyclictest4104574-21ssh12:36:161
179699320,4rtkit-daemon1795-21rtkit-daemon10:45:511
179699320,4rtkit-daemon1795-21rtkit-daemon07:37:520
179699320,3rtkit-daemon0-21swapper/011:56:531
179699320,2rtkit-daemon1795-21rtkit-daemon09:10:410
389440699316,8cyclictest26-21ksoftirqd/109:27:371
389440699315,9cyclictest26-21ksoftirqd/110:55:271
389440699311,10cyclictest26-21ksoftirqd/108:45:011
3894398993126,3cyclictest40193192sleep010:46:140
179699310,4rtkit-daemon1795-21rtkit-daemon09:18:330
39197562300,5sleep013-21ksoftirqd/008:10:240
389440699309,3cyclictest26-21ksoftirqd/110:05:191
389440699307,9cyclictest26-21ksoftirqd/112:25:331
389440699307,10cyclictest26-21ksoftirqd/112:19:191
389440699306,8cyclictest26-21ksoftirqd/110:03:571
389440699305,8cyclictest26-21ksoftirqd/109:21:061
389440699304,9cyclictest26-21ksoftirqd/109:40:081
389440699301,10cyclictest26-21ksoftirqd/108:55:221
389440699300,9cyclictest26-21ksoftirqd/110:25:131
389440699300,7cyclictest4040435-21apt-get11:15:131
389439899309,7cyclictest850-21runrttasks08:15:230
3894398993024,4cyclictest4084905-21seq12:10:470
179699300,4rtkit-daemon1795-21rtkit-daemon09:37:560
179699300,3rtkit-daemon0-21swapper/110:57:370
179699300,3rtkit-daemon0-21swapper/009:33:381
389440699298,9cyclictest26-21ksoftirqd/109:14:261
389440699296,9cyclictest26-21ksoftirqd/108:05:181
389440699296,8cyclictest26-21ksoftirqd/109:58:591
389440699296,10cyclictest26-21ksoftirqd/110:11:041
3894406992912,4cyclictest26-21ksoftirqd/108:40:011
3894406992912,2cyclictest141rcu_preempt12:04:421
3894406992910,4cyclictest26-21ksoftirqd/111:37:341
389440699290,8cyclictest4080747-21timerwakeupswit12:05:231
3894398992921,6cyclictest4046017-21taskset11:21:020
179699290,4rtkit-daemon1795-21rtkit-daemon09:00:400
179699290,4rtkit-daemon1795-21rtkit-daemon07:21:421
179699290,3rtkit-daemon1795-21rtkit-daemon07:42:380
179699290,3rtkit-daemon0-21swapper/111:07:350
179699290,3rtkit-daemon0-21swapper/110:42:550
179699290,3rtkit-daemon0-21swapper/008:01:441
179699290,2rtkit-daemon1795-21rtkit-daemon10:14:470
389440699287,9cyclictest141rcu_preempt11:29:021
389440699285,10cyclictest26-21ksoftirqd/111:22:091
389440699285,10cyclictest26-21ksoftirqd/108:39:121
389440699280,7cyclictest26-21ksoftirqd/109:35:251
3894398992825,2cyclictest66950irq/132-enp2s009:25:310
179699280,3rtkit-daemon0-21swapper/008:25:101
179699280,22rtkit-daemon3894391-21cyclictest12:36:110
389440699276,9cyclictest26-21ksoftirqd/107:36:351
389440699275,9cyclictest26-21ksoftirqd/108:30:231
389440699272,9cyclictest26-21ksoftirqd/107:40:161
3894406992716,7cyclictest3934264-21/usr/sbin/munin08:50:251
3894406992712,2cyclictest141rcu_preempt07:15:181
389439899279,13cyclictest13-21ksoftirqd/009:45:100
3894398992724,2cyclictest66950irq/132-enp2s009:21:400
389440699266,9cyclictest26-21ksoftirqd/108:10:201
389440699266,8cyclictest26-21ksoftirqd/111:40:441
389440699265,9cyclictest26-21ksoftirqd/107:49:051
389440699265,10cyclictest26-21ksoftirqd/107:10:581
3894398992614,6cyclictest66950irq/132-enp2s010:15:120
3894398992613,8cyclictest66950irq/132-enp2s011:35:110
389439899260,8cyclictest39697992sh09:43:150
179699260,21rtkit-daemon3894391-21cyclictest12:23:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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