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2026-05-14 - 09:42
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Thu May 14, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31972822269209,46sleep10-21swapper/119:07:071
31972082267189,28sleep00-21swapper/019:06:190
319833121260,4sleep13197800-21/usr/sbin/munin19:10:181
33480802740,4sleep13347962-21python323:25:011
179699620,6rtkit-daemon3245923-21cron21:09:591
179699620,4rtkit-daemon1795-21rtkit-daemon23:37:480
179699610,5rtkit-daemon3225957-21apt-get20:20:001
179699610,4rtkit-daemon1795-21rtkit-daemon19:41:351
34003472600,5sleep10-21swapper/100:35:141
179699560,4rtkit-daemon1795-21rtkit-daemon19:50:231
179699560,3rtkit-daemon0-21swapper/119:37:521
179699550,4rtkit-daemon1795-21rtkit-daemon23:26:291
179699540,4rtkit-daemon0-21swapper/100:32:461
179699540,3rtkit-daemon0-21swapper/100:26:141
179699540,3rtkit-daemon0-21swapper/100:17:221
179699530,4rtkit-daemon1795-21rtkit-daemon23:36:431
179699530,3rtkit-daemon0-21swapper/122:29:441
179699520,3rtkit-daemon1795-21rtkit-daemon23:27:530
179699510,23rtkit-daemon3197695-21cyclictest00:21:311
179699500,3rtkit-daemon0-21swapper/120:26:571
179699500,3rtkit-daemon0-21swapper/119:34:501
179699500,2rtkit-daemon1795-21rtkit-daemon22:08:321
179699490,4rtkit-daemon1795-21rtkit-daemon22:11:511
179699490,3rtkit-daemon1795-21rtkit-daemon23:52:091
179699490,3rtkit-daemon0-21swapper/123:08:191
179699490,3rtkit-daemon0-21swapper/121:57:541
179699490,21rtkit-daemon3197695-21cyclictest19:20:191
179699480,18rtkit-daemon0-21swapper/023:14:411
179699470,3rtkit-daemon0-21swapper/121:14:511
179699470,3rtkit-daemon0-21swapper/120:23:001
179699470,19rtkit-daemon3197695-21cyclictest20:04:231
179699470,19rtkit-daemon3197695-21cyclictest20:04:231
179699470,18rtkit-daemon1795-21rtkit-daemon19:16:261
179699470,16rtkit-daemon1795-21rtkit-daemon23:57:091
179699460,3rtkit-daemon1795-21rtkit-daemon22:17:241
179699460,3rtkit-daemon0-21swapper/120:46:141
179699460,20rtkit-daemon3197695-21cyclictest22:00:491
179699460,18rtkit-daemon1795-21rtkit-daemon20:38:041
179699450,3rtkit-daemon0-21swapper/122:21:171
33245452440,2sleep13324547-21ssh22:53:241
179699430,3rtkit-daemon0-21swapper/021:03:430
179699390,4rtkit-daemon3245934-21diskmemload00:20:120
179699370,3rtkit-daemon0-21swapper/123:30:401
179699370,3rtkit-daemon0-21swapper/123:10:140
179699360,3rtkit-daemon0-21swapper/119:35:270
179699350,3rtkit-daemon0-21swapper/120:25:150
179699350,3rtkit-daemon0-21swapper/100:31:140
179699340,3rtkit-daemon0-21swapper/120:14:120
3197699993317,3cyclictest3294933-21turbostat22:14:590
179699330,3rtkit-daemon0-21swapper/123:04:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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