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2026-06-30 - 18:38
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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 Tue Jun 30, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1171629523,25sleep00-21swapper/007:07:030
12172998651,24cyclictest15683-21apt-get11:50:130
12172998456,19cyclictest21520-21apt-get12:05:110
12172998346,26cyclictest19781-21apt-get12:00:210
12172998249,23cyclictest26769-21apt-get10:50:120
12172998237,39cyclictest23369-21diskmemload09:10:120
12172998059,11cyclictest7165-21apt-get09:55:150
12172998059,11cyclictest7165-21apt-get09:55:150
12172998043,24cyclictest0-21swapper/008:25:110
12172998042,25cyclictest0-21swapper/009:50:230
12172997952,18cyclictest3870-21apt-get08:15:120
12172997950,14cyclictest14462-21apt-get08:45:120
12172997949,24cyclictest0-21swapper/008:00:130
12172997949,15cyclictest16204-21apt-get08:50:130
12172997948,15cyclictest32006-21apt-get11:05:130
12172997945,24cyclictest28780-21apt-get09:25:120
12172997945,23cyclictest0-21swapper/010:10:160
12172997942,27cyclictest0-21swapper/008:35:130
12172997942,25cyclictest0-21swapper/012:35:120
12172997941,25cyclictest0-21swapper/010:15:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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