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2026-04-24 - 14:24
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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 Fri Apr 24, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2091112313270,28sleep00-21swapper/019:06:370
2090682305264,27sleep10-21swapper/119:06:101
179699660,4rtkit-daemon1795-21rtkit-daemon22:32:170
3393512580,4sleep0339340-21sort22:55:150
179699560,4rtkit-daemon1795-21rtkit-daemon21:02:111
3429562550,5sleep0342950-21apt-get23:00:100
2869702540,4sleep10-21swapper/121:45:181
179699530,4rtkit-daemon1795-21rtkit-daemon22:06:231
179699520,4rtkit-daemon1795-21rtkit-daemon00:03:321
179699510,4rtkit-daemon1795-21rtkit-daemon22:51:481
179699510,4rtkit-daemon1795-21rtkit-daemon21:18:530
179699490,3rtkit-daemon1795-21rtkit-daemon23:11:151
179699470,3rtkit-daemon1795-21rtkit-daemon19:21:221
179699420,4rtkit-daemon1795-21rtkit-daemon23:01:481
2927742400,1sleep00-21swapper/021:52:520
3278732390,1chrt327868-21sh22:39:590
179699380,4rtkit-daemon322942-21ssh22:32:231
179699380,3rtkit-daemon1795-21rtkit-daemon19:30:201
179699370,3rtkit-daemon0-21swapper/119:10:231
179699370,10rtkit-daemon336116-21irqstats22:50:160
179699360,4rtkit-daemon1795-21rtkit-daemon22:12:341
179699360,3rtkit-daemon0-21swapper/022:24:001
179699360,3rtkit-daemon0-21swapper/000:20:171
179699350,4rtkit-daemon1795-21rtkit-daemon23:36:181
179699350,4rtkit-daemon1795-21rtkit-daemon00:31:291
179699350,3rtkit-daemon1795-21rtkit-daemon22:02:531
179699350,3rtkit-daemon0-21swapper/121:28:390
179699350,3rtkit-daemon0-21swapper/120:14:311
179699350,3rtkit-daemon0-21swapper/020:00:530
179699340,5rtkit-daemon1795-21rtkit-daemon00:20:100
179699340,4rtkit-daemon1795-21rtkit-daemon23:23:051
179699340,4rtkit-daemon1795-21rtkit-daemon22:23:060
179699340,4rtkit-daemon1795-21rtkit-daemon21:42:080
179699340,4rtkit-daemon0-21swapper/122:15:481
179699340,3rtkit-daemon1795-21rtkit-daemon21:26:261
179699340,3rtkit-daemon0-21swapper/121:07:590
179699340,3rtkit-daemon0-21swapper/021:40:061
179699340,3rtkit-daemon0-21swapper/020:42:381
179699330,5rtkit-daemon230416-21cron20:04:551
179699330,4rtkit-daemon1795-21rtkit-daemon23:59:531
179699330,3rtkit-daemon1795-21rtkit-daemon21:24:481
179699330,3rtkit-daemon0-21swapper/123:51:360
179699330,3rtkit-daemon0-21swapper/122:39:101
179699330,3rtkit-daemon0-21swapper/100:37:240
179699320,4rtkit-daemon1795-21rtkit-daemon20:16:420
179699320,3rtkit-daemon1795-21rtkit-daemon00:37:471
179699320,3rtkit-daemon0-21swapper/120:42:260
179699320,3rtkit-daemon0-21swapper/120:38:051
179699320,3rtkit-daemon0-21swapper/119:12:000
179699320,3rtkit-daemon0-21swapper/020:33:341
209568993128,2cyclictest376854-21kworker/1:023:50:241
209568993120,6cyclictest258947-40apt-check21:10:191
179699310,4rtkit-daemon1795-21rtkit-daemon20:26:420
179699310,4rtkit-daemon1795-21rtkit-daemon19:22:550
179699310,3rtkit-daemon0-21swapper/123:41:500
179699310,3rtkit-daemon0-21swapper/123:17:571
179699310,3rtkit-daemon0-21swapper/122:40:350
179699310,3rtkit-daemon0-21swapper/020:18:561
209568993025,4cyclictest893-21snmpd22:55:361
179699300,3rtkit-daemon1795-21rtkit-daemon00:03:030
179699300,3rtkit-daemon0-21swapper/123:17:220
179699300,3rtkit-daemon0-21swapper/122:09:280
179699300,3rtkit-daemon0-21swapper/121:04:000
179699300,3rtkit-daemon0-21swapper/100:12:050
179699300,3rtkit-daemon0-21swapper/020:06:461
179699290,3rtkit-daemon0-21swapper/123:24:180
179699290,3rtkit-daemon0-21swapper/122:12:540
179699290,3rtkit-daemon0-21swapper/121:10:240
179699290,3rtkit-daemon0-21swapper/120:56:260
179699290,3rtkit-daemon0-21swapper/119:30:120
209563992822,4cyclictest243141-21sh20:30:210
179699280,3rtkit-daemon1795-21rtkit-daemon21:38:581
179699280,3rtkit-daemon0-21swapper/121:58:280
20956899272,20cyclictest290276-21apt-get21:50:141
20956899272,17cyclictest256458-21apt-get21:05:131
179699270,3rtkit-daemon0-21swapper/120:13:270
179699270,3rtkit-daemon0-21swapper/100:31:000
179699270,3rtkit-daemon0-21swapper/020:46:041
20956899264,20cyclictest410284-21cron00:30:001
20956899260,6cyclictest0-21swapper/121:57:161
209563992610,10cyclictest278509-21apt-get21:35:140
209563992512,8cyclictest273304-1kworker/u9:021:30:150
179699250,21rtkit-daemon893-21snmpd19:46:030
179699250,20rtkit-daemon893-21snmpd19:19:340
179699250,1rtkit-daemon1795-21rtkit-daemon00:26:210
20956899249,5cyclictest0-21swapper/123:47:301
20956899240,22cyclictest225842-21latency_hist19:50:011
179699240,1rtkit-daemon1795-21rtkit-daemon19:40:261
20956899238,5cyclictest0-21swapper/121:16:371
20956899238,5cyclictest0-21swapper/100:19:421
20956899237,6cyclictest0-21swapper/121:31:371
20956899232,15cyclictest328148-21apt-get22:40:151
20956899232,15cyclictest250591-21apt-get20:50:141
209568992320,2cyclictest18150irq/39-mmc023:05:571
20956399239,10cyclictest365523-21apt-get23:30:140
20956399231,5cyclictest258208-21diskmemload22:47:300
179699230,3rtkit-daemon0-21swapper/122:49:551
179699230,1rtkit-daemon1795-21rtkit-daemon22:26:411
20956899224,17cyclictest216453-21tune2fs19:25:161
209568992217,3cyclictest395379-21perf00:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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