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2025-12-08 - 09:59
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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 Dec 08, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19390392256192,49sleep00-21swapper/019:08:550
19389732256180,60sleep10-21swapper/119:08:141
204249321310,4sleep126-21ksoftirqd/122:26:091
1258991090,3rtkit-daemon1257-21rtkit-daemon22:27:260
125899750,5rtkit-daemon0-21swapper/023:36:200
19411792640,5chrt0-21swapper/019:15:010
125899620,4rtkit-daemon1257-21rtkit-daemon19:24:390
125899600,4rtkit-daemon1257-21rtkit-daemon00:00:060
125899570,4rtkit-daemon1257-21rtkit-daemon22:57:420
125899570,4rtkit-daemon1257-21rtkit-daemon21:44:100
125899540,5rtkit-daemon1979551-21munin-node20:50:120
125899530,4rtkit-daemon1257-21rtkit-daemon22:46:200
125899510,4rtkit-daemon1257-21rtkit-daemon20:32:070
125899500,4rtkit-daemon1257-21rtkit-daemon00:17:061
125899480,4rtkit-daemon1257-21rtkit-daemon21:34:200
125899470,4rtkit-daemon1257-21rtkit-daemon20:06:190
125899460,4rtkit-daemon1257-21rtkit-daemon19:52:430
125899440,4rtkit-daemon1257-21rtkit-daemon19:19:480
125899440,3rtkit-daemon0-21swapper/023:07:480
125899440,3rtkit-daemon0-21swapper/022:43:150
125899430,3rtkit-daemon0-21swapper/100:26:360
125899430,3rtkit-daemon0-21swapper/023:59:390
125899430,3rtkit-daemon0-21swapper/021:35:030
125899430,3rtkit-daemon0-21swapper/020:47:410
125899420,4rtkit-daemon1257-21rtkit-daemon19:56:190
125899420,3rtkit-daemon0-21swapper/021:55:340
125899410,4rtkit-daemon1257-21rtkit-daemon20:38:070
125899410,3rtkit-daemon0-21swapper/122:31:110
125899410,3rtkit-daemon0-21swapper/023:04:230
125899410,3rtkit-daemon0-21swapper/020:04:360
125899410,3rtkit-daemon0-21swapper/019:37:310
125899400,3rtkit-daemon1257-21rtkit-daemon22:18:061
125899400,3rtkit-daemon0-21swapper/123:43:560
125899400,3rtkit-daemon0-21swapper/121:27:130
125899390,3rtkit-daemon1257-21rtkit-daemon22:09:350
125899390,3rtkit-daemon0-21swapper/100:17:500
125899380,4rtkit-daemon1257-21rtkit-daemon19:34:010
125899380,4rtkit-daemon1257-21rtkit-daemon19:25:390
125899370,4rtkit-daemon0-21swapper/122:39:420
125899370,3rtkit-daemon0-21swapper/121:10:490
125899370,3rtkit-daemon0-21swapper/119:11:061
125899370,3rtkit-daemon0-21swapper/023:30:281
125899370,3rtkit-daemon0-21swapper/022:43:481
125899370,3rtkit-daemon0-21swapper/021:40:001
193922899365,22cyclictest141rcu_preempt00:40:011
125899360,3rtkit-daemon1257-21rtkit-daemon00:14:041
125899360,3rtkit-daemon0-21swapper/121:00:451
125899350,3rtkit-daemon0-21swapper/122:51:290
125899350,3rtkit-daemon0-21swapper/023:41:131
125899350,3rtkit-daemon0-21swapper/023:29:471
125899350,1rtkit-daemon1257-21rtkit-daemon22:00:100
125899340,4rtkit-daemon1257-21rtkit-daemon20:56:071
1939228993317,9cyclictest2016408-21apt-get21:50:151
125899330,4rtkit-daemon1257-21rtkit-daemon23:17:111
125899330,4rtkit-daemon1257-21rtkit-daemon20:17:501
125899330,3rtkit-daemon0-21swapper/019:30:551
125899330,1rtkit-daemon1257-21rtkit-daemon22:19:540
125899330,1rtkit-daemon1257-21rtkit-daemon21:49:370
125899320,3rtkit-daemon0-21swapper/022:01:231
125899320,1rtkit-daemon1257-21rtkit-daemon23:31:470
1939225993111,9cyclictest1997345-21ssh21:22:050
125899310,4rtkit-daemon1257-21rtkit-daemon23:11:300
125899310,1rtkit-daemon1257-21rtkit-daemon23:23:540
193922899292,22cyclictest2058053-21apt-get22:50:191
1939228992910,4cyclictest26-21ksoftirqd/119:24:591
1939225992911,8cyclictest13-21ksoftirqd/000:38:540
193922599291,15cyclictest1987188-21diskmemload22:12:470
193922599291,14cyclictest1987188-21diskmemload23:50:070
125899290,20rtkit-daemon1987190-21latency_hist21:10:001
1939228992826,1cyclictest0-21swapper/120:05:381
1939228992810,16cyclictest261ksoftirqd/100:00:021
193922599285,11cyclictest0-21swapper/000:31:450
193922599283,18cyclictest2097450-21apt-get23:45:140
1939225992816,5cyclictest13-21ksoftirqd/000:09:200
1939225992813,3cyclictest2122259-21latency00:20:190
193922599281,13cyclictest1987188-21diskmemload00:12:440
193922899271,4cyclictest1995023-40apt-check21:20:071
193922899270,6cyclictest0-21swapper/122:55:461
193922899270,6cyclictest0-21swapper/121:13:421
193922899270,6cyclictest0-21swapper/120:48:491
193922599277,7cyclictest13-21ksoftirqd/021:50:110
193922599271,7cyclictest13-21ksoftirqd/020:20:140
193922599271,12cyclictest1987188-21diskmemload23:29:170
19541732260,10sleep126-21ksoftirqd/119:45:191
1939228992621,2cyclictest26-21ksoftirqd/121:20:011
1939228992610,4cyclictest26-21ksoftirqd/100:23:311
193922899260,6cyclictest0-21swapper/123:09:581
193922899260,6cyclictest0-21swapper/120:38:481
193922599269,4cyclictest1952618-21processes19:40:230
193922599264,8cyclictest13-21ksoftirqd/020:26:470
193922599261,7cyclictest1987188-21diskmemload21:16:320
193922899256,2cyclictest141rcu_preempt23:54:111
193922899253,15cyclictest1957583-21apt-get19:55:171
1939228992518,5cyclictest2093522-21ssh23:39:141
1939228992518,2cyclictest2031862-21kworker/u8:222:12:531
193922899251,3cyclictest2009522-21apt-get21:40:131
1939228992513,4cyclictest26-21ksoftirqd/122:35:201
193922899250,6cyclictest0-21swapper/122:09:581
193922599258,8cyclictest13-21ksoftirqd/020:42:180
1939225992514,5cyclictest13-21ksoftirqd/023:16:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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