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2026-04-21 - 20:54
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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 Tue Apr 21, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4138312269191,28sleep00-21swapper/007:06:210
4141722247181,51sleep10-21swapper/107:10:001
5793442680,4sleep1578454-21/usr/sbin/munin11:45:221
5335692540,3sleep1533225-21python310:45:021
179699540,4rtkit-daemon1795-21rtkit-daemon10:13:071
5262552510,4sleep0526253-21fschecks_time10:35:200
179699470,4rtkit-daemon1795-21rtkit-daemon11:14:240
179699470,3rtkit-daemon1795-21rtkit-daemon09:30:540
179699460,3rtkit-daemon0-21swapper/007:16:410
179699420,3rtkit-daemon0-21swapper/111:33:380
179699420,3rtkit-daemon0-21swapper/011:06:450
179699410,4rtkit-daemon1795-21rtkit-daemon11:55:291
179699410,3rtkit-daemon0-21swapper/112:34:570
179699410,3rtkit-daemon0-21swapper/109:50:350
179699410,3rtkit-daemon0-21swapper/011:24:490
179699400,3rtkit-daemon0-21swapper/011:18:500
179699400,3rtkit-daemon0-21swapper/011:10:241
179699400,3rtkit-daemon0-21swapper/007:38:570
179699390,3rtkit-daemon0-21swapper/010:02:070
179699390,3rtkit-daemon0-21swapper/009:55:220
179699380,3rtkit-daemon0-21swapper/112:26:280
179699380,3rtkit-daemon0-21swapper/112:08:270
179699380,3rtkit-daemon0-21swapper/110:23:310
179699380,3rtkit-daemon0-21swapper/109:03:400
179699380,3rtkit-daemon0-21swapper/007:28:080
179699370,3rtkit-daemon1795-21rtkit-daemon10:59:430
179699370,3rtkit-daemon0-21swapper/111:55:130
179699370,3rtkit-daemon0-21swapper/108:05:530
179699360,3rtkit-daemon0-21swapper/112:21:460
179699360,3rtkit-daemon0-21swapper/108:54:500
179699360,2rtkit-daemon0-21swapper/108:45:370
179699350,4rtkit-daemon1795-21rtkit-daemon12:22:301
179699350,4rtkit-daemon1795-21rtkit-daemon11:42:231
179699350,4rtkit-daemon1795-21rtkit-daemon11:42:221
179699350,4rtkit-daemon1795-21rtkit-daemon10:22:461
179699350,4rtkit-daemon1795-21rtkit-daemon10:05:091
179699350,4rtkit-daemon1795-21rtkit-daemon09:49:171
179699350,4rtkit-daemon1795-21rtkit-daemon08:49:191
179699350,3rtkit-daemon0-21swapper/110:12:080
179699350,3rtkit-daemon0-21swapper/108:57:380
179699350,3rtkit-daemon0-21swapper/108:02:470
179699350,1rtkit-daemon1795-21rtkit-daemon08:35:230
41427099347,7cyclictest13-21ksoftirqd/011:36:540
179699340,4rtkit-daemon1795-21rtkit-daemon08:50:581
179699340,3rtkit-daemon1795-21rtkit-daemon11:28:381
179699340,3rtkit-daemon0-21swapper/112:16:590
179699340,3rtkit-daemon0-21swapper/108:11:540
41427799330,11cyclictest431112-21dpkg07:50:041
414270993324,7cyclictest598816-21ssh12:11:190
179699330,4rtkit-daemon1795-21rtkit-daemon11:31:241
179699330,4rtkit-daemon1795-21rtkit-daemon09:23:271
179699330,3rtkit-daemon0-21swapper/108:44:190
179699330,1rtkit-daemon1795-21rtkit-daemon09:12:570
179699320,3rtkit-daemon1795-21rtkit-daemon12:00:461
179699320,3rtkit-daemon1795-21rtkit-daemon08:58:141
414277993111,4cyclictest26-21ksoftirqd/107:20:161
414270993110,11cyclictest13-21ksoftirqd/009:25:150
179699310,4rtkit-daemon1710-21kerneloops07:31:590
179699310,3rtkit-daemon1795-21rtkit-daemon10:56:061
179699310,3rtkit-daemon1795-21rtkit-daemon09:52:491
179699310,1rtkit-daemon1795-21rtkit-daemon09:39:110
41427799303,11cyclictest141rcu_preempt07:15:001
41427099308,4cyclictest471478-21cut09:20:190
41427099308,12cyclictest0-21swapper/010:31:320
414270993012,7cyclictest13-21ksoftirqd/010:53:340
179699300,4rtkit-daemon1795-21rtkit-daemon08:44:261
179699300,3rtkit-daemon0-21swapper/008:30:160
179699300,1rtkit-daemon1795-21rtkit-daemon07:58:450
179699300,1rtkit-daemon1795-21rtkit-daemon07:53:480
41427099298,7cyclictest13-21ksoftirqd/010:40:260
41427099291,14cyclictest463123-21diskmemload11:44:470
41427099291,14cyclictest463123-21diskmemload11:44:470
179699290,6rtkit-daemon572685-21ssh11:35:481
5192552280,5sleep0519431-21grep10:25:250
41427799285,6cyclictest26-21ksoftirqd/112:15:191
41427799284,5cyclictest261ksoftirqd/110:19:531
41427099289,8cyclictest589459-21seq12:00:110
41427099288,5cyclictest0-21swapper/011:01:010
41427099285,6cyclictest13-21ksoftirqd/008:20:120
41427099283,9cyclictest13-21ksoftirqd/010:16:460
414270992816,3cyclictest564884-21ls11:25:240
41427099281,17cyclictest0-21swapper/012:35:180
414277992724,2cyclictest66950irq/132-enp2s008:05:101
414277992716,2cyclictest26-21ksoftirqd/111:50:171
41427099278,5cyclictest581313-21diskmemload11:48:360
41427099277,12cyclictest441402-21apt-get08:15:140
41427099271,7cyclictest463123-21diskmemload09:41:380
414270992710,9cyclictest13-21ksoftirqd/009:18:460
41427799261,7cyclictest416799-21fschecks_time07:15:031
414277992614,3cyclictest26-21ksoftirqd/111:00:041
414277992611,3cyclictest26-21ksoftirqd/110:30:131
41427099267,5cyclictest13-21ksoftirqd/010:05:140
41427099267,4cyclictest0-21swapper/009:46:150
41427099264,6cyclictest13-21ksoftirqd/008:30:010
179699260,1rtkit-daemon1795-21rtkit-daemon08:03:151
41427799259,3cyclictest26-21ksoftirqd/109:05:131
414277992517,6cyclictest619220-21basename12:40:001
41427799251,5cyclictest463123-21diskmemload12:30:431
414277992513,3cyclictest26-21ksoftirqd/110:00:171
414277992512,3cyclictest26-21ksoftirqd/107:25:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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