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2026-06-17 - 08:41
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6.osadl.org (updated Wed Jun 17, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17098999135,47cyclictest2820-21apt-get21:30:130
17098998355,17cyclictest801-21gpm19:30:130
17098998247,26cyclictest11853-21apt-get20:25:130
17098998245,25cyclictest0-21swapper/021:00:110
17098998152,15cyclictest10457-21apt-get21:50:230
17098998146,27cyclictest0-21swapper/023:55:230
1709899807,62cyclictest29765-21apt-get22:45:150
17098998051,20cyclictest31504-21apt-get22:50:130
17098998051,14cyclictest19236-21apt-get22:15:170
17098998045,27cyclictest0-21swapper/023:20:130
17098998044,25cyclictest812-21apt-get22:55:140
17098998043,24cyclictest0-21swapper/023:35:120
17098997949,22cyclictest0-21swapper/020:05:140
17098997948,15cyclictest22736-21apt-get22:25:140
17098997946,25cyclictest0-21swapper/023:05:160
17098997851,15cyclictest28100-21diskmemload21:10:130
17098997848,15cyclictest2092-21apt-get00:30:130
17098997846,25cyclictest0-21swapper/022:00:130
17104997742,23cyclictest24732-21apt-get21:00:111
17098997750,17cyclictest13892-21apt-get20:30:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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