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2026-03-10 - 14:02
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Tue Mar 10, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2327922265189,28sleep10-21swapper/119:08:231
2327532260219,26sleep00-21swapper/019:07:580
179699670,4rtkit-daemon1795-21rtkit-daemon20:09:000
3541982560,4sleep10-21swapper/122:48:261
179699520,4rtkit-daemon1795-21rtkit-daemon00:12:181
179699500,4rtkit-daemon1795-21rtkit-daemon23:31:161
179699500,3rtkit-daemon1795-21rtkit-daemon21:21:371
179699450,4rtkit-daemon1795-21rtkit-daemon21:52:571
3182302420,1sleep00-21swapper/021:59:130
179699390,6rtkit-daemon1795-21rtkit-daemon19:15:130
179699380,3rtkit-daemon0-21swapper/122:11:051
179699380,3rtkit-daemon0-21swapper/020:23:010
179699380,21rtkit-daemon0-21swapper/122:02:411
179699370,3rtkit-daemon1795-21rtkit-daemon21:45:231
179699370,3rtkit-daemon0-21swapper/120:32:561
179699370,3rtkit-daemon0-21swapper/100:19:521
179699360,4rtkit-daemon1795-21rtkit-daemon19:10:350
179699350,6rtkit-daemon326012-21ssh22:10:020
179699350,3rtkit-daemon1795-21rtkit-daemon23:39:371
179699350,3rtkit-daemon1795-21rtkit-daemon21:25:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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