Visualrf Resource Utilization - Dell PowerConnect W-Airwave User Manual

To edit the wall settings and select a color for wall types within the VisualRF UI, navigate to the Wall
Attenuation Settings section and select the pencil icon next to each of these settings as described in
Table 8 Wall Attenuation Settings in VisualRF > Setup
Setting
Glass Attenuation (dB)
Cubicle Attenuation (dB)
Drywall Attenuation (dB)
Concrete Attenuation (dB)

VisualRF Resource Utilization

When tuning the VisualRF server, Dell recommends using the default settings as recommended. If you do
change any of these settings above, change one at a time and see how the system performs. Each time you restart
VisualRF, it will take at least 30 minutes to return to normal processing.
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.
NOTE: It is 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.
On the System > Performance page in AWMS, you can quickly determine if the system is overloaded. The
system load should not average more than the number of cores.
Figure 5 System Performance Graphs
16 | Setting Up and Tuning VisualRF
Default Description
2 Specifies the attenuation for any glass walls that are drawn in VisualRF.
NOTE: All of these values are global variables that cannot be overridden for
individual floor plans. VisualRF uses these values to calculate path loss and client
locations. Walls within VisualRF are interpreted as pure dB loss without adjusting
for wall thickness.
4 Specifies the attenuation for any cubicle walls drawn in VisualRF.
6 Specifies the attenuation for any drywall walls drawn in VisualRF.
15 Specifies the attenuation for any concrete walls drawn in VisualRF.
Dell PowerConnect W AirWave 7.2 | VisualRF User Guide
Table 8: