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2026-03-10 - 02:48
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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 Mon Mar 09, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27864972269208,47sleep10-21swapper/107:06:061
27865652245186,44sleep00-21swapper/007:06:490
28418292530,3sleep10-21swapper/109:17:331
27926332530,1chrt2791613-21/usr/sbin/munin07:20:231
179699480,3rtkit-daemon1795-21rtkit-daemon07:20:200
28504432460,2sleep00-21swapper/009:30:140
29321052420,1sleep02932106-21sh11:24:040
28531962410,5sleep10-21swapper/109:33:571
179699390,5rtkit-daemon2814865-21ntp_states08:15:221
179699390,5rtkit-daemon2814865-21ntp_states08:15:221
179699390,3rtkit-daemon0-21swapper/110:34:321
179699380,3rtkit-daemon0-21swapper/010:48:150
2787003993724,2cyclictest2835418-21diskmemload10:35:161
179699370,3rtkit-daemon0-21swapper/011:35:340
179699370,3rtkit-daemon0-21swapper/011:27:230
179699370,3rtkit-daemon0-21swapper/010:59:030
179699370,3rtkit-daemon0-21swapper/009:37:170
179699360,3rtkit-daemon0-21swapper/012:03:090
179699360,3rtkit-daemon0-21swapper/009:15:480
179699350,4rtkit-daemon1795-21rtkit-daemon12:11:011
179699350,4rtkit-daemon1795-21rtkit-daemon08:22:460
179699350,3rtkit-daemon0-21swapper/112:19:401
179699350,3rtkit-daemon0-21swapper/110:16:301
179699350,3rtkit-daemon0-21swapper/009:12:390
179699350,3rtkit-daemon0-21swapper/008:04:480
179699350,3rtkit-daemon0-21swapper/007:53:360
179699340,4rtkit-daemon1795-21rtkit-daemon11:08:321
179699340,4rtkit-daemon1795-21rtkit-daemon07:37:030
179699340,3rtkit-daemon0-21swapper/007:28:401
28790832320,3chrt0-21swapper/110:10:001
179699320,4rtkit-daemon2899015-21ssh10:36:260
179699320,3rtkit-daemon1795-21rtkit-daemon11:52:270
179699320,3rtkit-daemon1795-21rtkit-daemon09:06:150
179699320,3rtkit-daemon0-21swapper/012:03:371
179699320,3rtkit-daemon0-21swapper/011:36:021
179699320,3rtkit-daemon0-21swapper/011:31:131
179699320,3rtkit-daemon0-21swapper/008:14:171
179699320,26rtkit-daemon2786992-21cyclictest10:05:210
179699310,4rtkit-daemon1795-21rtkit-daemon10:01:271
179699310,3rtkit-daemon1795-21rtkit-daemon12:36:531
179699310,3rtkit-daemon0-21swapper/009:57:141
278700399301,6cyclictest0-21swapper/107:50:281
278700399300,6cyclictest0-21swapper/112:05:191
2786999993014,10cyclictest2806284-21apt-get07:55:130
179699300,4rtkit-daemon1795-21rtkit-daemon07:17:171
179699300,3rtkit-daemon0-21swapper/009:01:411
179699300,3rtkit-daemon0-21swapper/007:36:001
278700399298,9cyclictest2950933-21apt-get11:50:121
278700399296,9cyclictest26-21ksoftirqd/111:40:171
2787003992926,2cyclictest18150irq/39-mmc012:30:581
2787003992912,2cyclictest141rcu_preempt12:28:101
2787003992912,2cyclictest141rcu_preempt09:49:351
2787003992912,2cyclictest141rcu_preempt09:28:271
2787003992912,2cyclictest141rcu_preempt09:21:291
2787003992911,3cyclictest26-21ksoftirqd/110:22:431
278700399290,7cyclictest2879309-21apt-get10:10:131
278700399290,6cyclictest0-21swapper/108:30:191
278699999290,11cyclictest2870048-21users09:55:250
179699290,4rtkit-daemon1795-21rtkit-daemon12:33:030
179699290,3rtkit-daemon0-21swapper/110:00:400
179699290,3rtkit-daemon0-21swapper/008:00:591
28026392280,4chrt0-21swapper/107:45:211
278700399287,9cyclictest26-21ksoftirqd/107:40:251
278700399286,9cyclictest2923385-21threads11:10:261
2787003992825,2cyclictest2952430-21kworker/1:011:56:311
278700399282,3cyclictest26-21ksoftirqd/112:20:261
278700399282,10cyclictest26-21ksoftirqd/110:44:551
2787003992811,3cyclictest141rcu_preempt09:11:061
2787003992810,4cyclictest26-21ksoftirqd/109:50:561
2787003992810,3cyclictest26-21ksoftirqd/110:50:181
2786999992821,5cyclictest2831528-21lockfile-create08:59:590
278699999280,7cyclictest2820339-21grep08:30:150
179699280,3rtkit-daemon1795-21rtkit-daemon11:01:240
179699280,3rtkit-daemon1795-21rtkit-daemon08:14:470
179699280,3rtkit-daemon0-21swapper/112:36:130
179699280,3rtkit-daemon0-21swapper/011:23:531
179699280,3rtkit-daemon0-21swapper/010:59:251
179699280,23rtkit-daemon2854691-21fschecks_time09:35:181
278700399277,10cyclictest26-21ksoftirqd/107:55:201
278700399276,9cyclictest26-21ksoftirqd/111:25:241
278700399276,11cyclictest26-21ksoftirqd/109:07:071
2787003992712,2cyclictest141rcu_preempt11:47:101
2787003992712,2cyclictest141rcu_preempt11:01:511
2787003992712,2cyclictest141rcu_preempt10:28:281
2787003992711,2cyclictest141rcu_preempt10:48:511
2786999992712,10cyclictest2840108-1kworker/u9:109:25:110
179699270,3rtkit-daemon1795-21rtkit-daemon09:40:031
278700399269,3cyclictest26-21ksoftirqd/111:18:391
278700399266,18cyclictest0-21swapper/108:35:211
278700399263,4cyclictest26-21ksoftirqd/108:05:191
179699260,3rtkit-daemon1795-21rtkit-daemon08:21:111
179699260,3rtkit-daemon0-21swapper/112:25:460
179699260,3rtkit-daemon0-21swapper/110:44:060
278700399258,4cyclictest141rcu_preempt08:55:131
2787003992511,12cyclictest26-21ksoftirqd/107:30:021
278699999253,6cyclictest2958015-21munin-run12:00:000
278699999253,15cyclictest2882838-21apt-get10:15:120
2786999992512,7cyclictest2825843-21apt-get08:45:130
2786999992510,9cyclictest2835594-1kworker/u9:209:40:120
179699250,20rtkit-daemon2786992-21cyclictest07:12:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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