
339 | Using VisualRF Dell Networking W-AirWave 8.0 | User Guide
Setting Default dB Description
Concrete Attenuation
(dB)
15
Specifies the attenuation for any concrete walls drawn in
VisualRF.
Cubicle Attenuation (dB) 4 Specifies the attenuation for any cubicle walls drawn in VisualRF.
Drywall Attenuation (dB) 6 Specifies the attenuation for any drywall walls drawn in VisualRF.
Glass Attenuation (dB) 6
Specifies the attenuation for any glass walls that are drawn in
VisualRF.
Table 157:
Wall Attenuation Settings in VisualRF > Setup
Adding a New Attenuation
In some cases, it may be necessary to create a special attenuation setting. Click on the Add button to specify a new wall
attenuation.
Figure 216:Add a New Wall Attenuation
Update the fields as described in Table 158. Click the Add button on the form when you are finished.
Setting Description
Material Specify the type of material for the new wall.
Attenuation (0-
100 dB)
Specify the attenuation decibel value.
Color Select a color for the new wall.
Table 158:
New Wall Attenuation
VisualRF Resource Utilization
When tuning the VisualRF server, use the default settings as recommended. If you do change any of these settings,
change one at a time and see how the system performs. Each time you restart VisualRF, you will notice a delay before
returning to normal processing. This delay can last anywhere from a minute to upwards of 30 minutes, depending on the
size of the VisualRF database.
If you use the ‘top’ command to check on VisualRF resource utilization, ensure you use the ‘1’ and ‘H’ flags to show
cores and threads. Remember ‘top’ also takes 1-2 minutes to normalize and provide accurate data.
Itis normal for VisualRF to consume 20% of each core with a combination of threads. It will utilize excess CPU cycles on all
cores when required.
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