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2025-11-03 - 20:33
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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 Mon Nov 03, 2025 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2493252271188,28sleep10-21swapper/107:07:041
2478422270187,28sleep00-21swapper/007:05:060
24973499662,42cyclictest356464-21apt-get10:25:170
24973499652,43cyclictest425152-21apt-get11:55:120
24973499641,42cyclictest448601-40apt-check12:25:210
3973902630,4sleep00-21swapper/011:17:550
24973499632,40cyclictest337281-21apt-get10:00:130
4531572620,4sleep00-21swapper/012:30:210
24973499608,26cyclictest315081-21tr09:30:250
24973499600,3cyclictest280610-21grep08:25:180
24973499600,3cyclictest280610-21grep08:25:170
24973499592,40cyclictest288105-21apt-get08:45:140
24973499590,2cyclictest391171-21apt-get11:10:130
249734995813,23cyclictest443495-21sh12:18:560
125899580,4rtkit-daemon1257-21rtkit-daemon07:12:270
24973499571,39cyclictest417740-21apt-get11:45:120
24973499571,37cyclictest383401-21apt-get11:00:150
24973499570,8cyclictest264738-21expr07:45:180
24973499568,26cyclictest353564-21gzip10:20:240
24973499565,27cyclictest364461-21gltestperf10:35:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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