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2026-01-12 - 09:17
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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 Jan 12, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20516562264190,59sleep00-21swapper/019:07:520
20517502263224,25sleep10-21swapper/119:08:531
21263682740,4sleep10-21swapper/121:44:581
21132382680,2sleep00-21swapper/021:25:320
22411442580,4chrt2240262-21/usr/sbin/munin00:20:220
22261442510,3sleep12226139-21sort00:00:141
179699510,4rtkit-daemon1795-21rtkit-daemon21:20:190
179699510,4rtkit-daemon1795-21rtkit-daemon19:34:390
179699500,4rtkit-daemon1795-21rtkit-daemon23:22:120
179699500,3rtkit-daemon1795-21rtkit-daemon20:02:131
21179862470,5sleep00-21swapper/021:32:390
179699440,4rtkit-daemon1795-21rtkit-daemon20:23:071
21691002420,3sleep013-21ksoftirqd/022:41:330
21681462420,3chrt2167179-21/usr/sbin/munin22:40:221
2051955994016,4cyclictest13-21ksoftirqd/023:55:020
179699400,4rtkit-daemon0-21swapper/122:27:101
179699380,3rtkit-daemon0-21swapper/000:11:060
179699370,5rtkit-daemon2061986-21find19:30:241
179699370,3rtkit-daemon0-21swapper/120:30:301
179699370,3rtkit-daemon0-21swapper/020:55:330
2051955993621,3cyclictest2151131-21ssh22:17:040
179699360,3rtkit-daemon0-21swapper/122:58:561
179699360,3rtkit-daemon0-21swapper/122:32:351
2051955993517,5cyclictest13-21ksoftirqd/021:10:010
179699350,4rtkit-daemon2206420-21ssh23:33:251
179699350,4rtkit-daemon1795-21rtkit-daemon19:45:301
179699350,3rtkit-daemon0-21swapper/123:03:250
179699350,3rtkit-daemon0-21swapper/122:20:140
179699350,3rtkit-daemon0-21swapper/023:35:590
179699350,3rtkit-daemon0-21swapper/000:39:171
21638092340,3chrt0-21swapper/022:35:170
179699340,4rtkit-daemon1795-21rtkit-daemon23:29:110
179699340,4rtkit-daemon1795-21rtkit-daemon19:44:111
179699340,3rtkit-daemon0-21swapper/120:14:251
179699340,3rtkit-daemon0-21swapper/119:50:181
179699340,3rtkit-daemon0-21swapper/119:27:031
179699340,3rtkit-daemon0-21swapper/119:22:021
205195999333,22cyclictest2130677-40apt-check21:50:131
2051955993320,2cyclictest2205841-21ssh23:32:030
2051955993319,2cyclictest2238254-21ssh00:16:080
179699330,3rtkit-daemon0-21swapper/122:08:340
179699330,3rtkit-daemon0-21swapper/121:57:201
179699330,3rtkit-daemon0-21swapper/120:08:011
179699330,3rtkit-daemon0-21swapper/119:23:270
179699330,3rtkit-daemon0-21swapper/023:04:111
179699330,3rtkit-daemon0-21swapper/000:34:470
2051955993219,2cyclictest2217129-21ssh23:47:410
179699320,4rtkit-daemon2198558-21ssh23:22:181
179699320,3rtkit-daemon1795-21rtkit-daemon23:13:190
179699320,3rtkit-daemon0-21swapper/000:32:201
2051959993115,10cyclictest2163574-21apt-get22:35:161
179699310,4rtkit-daemon1795-21rtkit-daemon22:15:041
179699310,4rtkit-daemon1795-21rtkit-daemon22:02:551
179699310,4rtkit-daemon1795-21rtkit-daemon21:26:221
179699310,4rtkit-daemon1795-21rtkit-daemon21:14:441
179699310,3rtkit-daemon0-21swapper/122:53:310
179699310,3rtkit-daemon0-21swapper/121:39:090
179699310,3rtkit-daemon0-21swapper/120:27:230
179699310,3rtkit-daemon0-21swapper/120:23:420
179699310,1rtkit-daemon1795-21rtkit-daemon21:15:180
205195599309,4cyclictest13-21ksoftirqd/023:17:000
2051955993013,4cyclictest13-21ksoftirqd/020:00:010
2051955993011,5cyclictest13-21ksoftirqd/022:30:000
2051955993011,4cyclictest13-21ksoftirqd/021:11:400
2051955993010,7cyclictest13-21ksoftirqd/022:05:010
2051955993010,4cyclictest13-21ksoftirqd/022:45:160
2051955993010,4cyclictest13-21ksoftirqd/021:53:320
179699300,3rtkit-daemon1795-21rtkit-daemon20:26:411
179699300,3rtkit-daemon1795-21rtkit-daemon19:19:471
179699300,3rtkit-daemon0-21swapper/120:02:210
179699300,3rtkit-daemon0-21swapper/119:44:540
179699300,3rtkit-daemon0-21swapper/023:11:291
2051959992915,7cyclictest2207394-21apt-get23:35:141
205195599299,4cyclictest13-21ksoftirqd/023:06:570
205195599299,4cyclictest13-21ksoftirqd/022:30:230
205195599299,3cyclictest13-21ksoftirqd/021:56:410
205195599298,4cyclictest13-21ksoftirqd/021:43:570
205195599298,3cyclictest13-21ksoftirqd/022:59:080
2051955992912,5cyclictest13-21ksoftirqd/023:40:210
179699290,4rtkit-daemon1795-21rtkit-daemon21:46:231
179699290,3rtkit-daemon1795-21rtkit-daemon22:09:431
179699290,3rtkit-daemon0-21swapper/119:18:210
179699290,3rtkit-daemon0-21swapper/023:27:051
179699290,3rtkit-daemon0-21swapper/023:06:221
179699290,3rtkit-daemon0-21swapper/019:39:341
205195599289,3cyclictest13-21ksoftirqd/019:45:030
205195599288,4cyclictest13-21ksoftirqd/023:53:170
205195599287,4cyclictest13-21ksoftirqd/000:35:350
205195599287,3cyclictest141rcu_preempt22:14:420
2051955992810,4cyclictest13-21ksoftirqd/000:09:250
2051955992810,3cyclictest13-21ksoftirqd/000:27:020
179699280,3rtkit-daemon0-21swapper/023:58:201
179699280,3rtkit-daemon0-21swapper/021:22:521
179699280,3rtkit-daemon0-21swapper/020:45:311
179699280,3rtkit-daemon0-21swapper/020:38:481
179699280,3rtkit-daemon0-21swapper/000:28:501
205195599279,4cyclictest13-21ksoftirqd/000:04:080
2051955992714,3cyclictest13-21ksoftirqd/021:45:190
179699270,3rtkit-daemon0-21swapper/120:11:200
179699270,3rtkit-daemon0-21swapper/020:50:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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