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2025-10-19 - 04:50
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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 Sun Oct 19, 2025 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4678522265188,27sleep10-21swapper/119:05:561
4682312258186,58sleep00-21swapper/019:09:580
46846899671,46cyclictest540352-21apt-get21:40:141
46846899662,43cyclictest517454-21apt-get21:10:161
46846899652,40cyclictest573195-21apt-get22:25:141
125899650,4rtkit-daemon1257-21rtkit-daemon22:40:260
46846899643,42cyclictest587829-21apt-get22:45:151
6545612610,3sleep10-21swapper/100:15:291
125899600,5rtkit-daemon609150-21ssh23:12:270
125899600,5rtkit-daemon609150-21ssh23:12:270
6051992590,2sleep10-21swapper/123:07:461
125899590,4rtkit-daemon1257-21rtkit-daemon21:49:150
125899580,4rtkit-daemon1257-21rtkit-daemon22:33:151
5840852570,3sleep126-21ksoftirqd/122:40:071
46846899572,38cyclictest667286-21apt-get00:35:151
125899570,6rtkit-daemon1257-21rtkit-daemon00:05:580
125899570,4rtkit-daemon1257-21rtkit-daemon22:55:170
125899570,4rtkit-daemon1257-21rtkit-daemon21:11:350
125899570,3rtkit-daemon0-21swapper/022:07:410
125899560,5rtkit-daemon1257-21rtkit-daemon00:24:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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