Concept Guide

14 | Setting Up and Tuning VisualRF Dell PowerConnect W AirWave 7.2 | VisualRF User Guide
To enable VisualRF and tune memory and performance, navigate to the Server Settings section on this page. The
settings in this section are detailed in Table 5:
Table 5 Server Settings Section of the VisualRF > Setup Page
Setting Default Description
Enable VisualRF Engine No Enables or disables the VisualRF engine. This setting must be enabled to use
VisualRF. If you do not have a license for VisualRF, this page will not appear.
Enable Multi-floor Bleed-
Through
Yes Enables or disables calculating the impact APs on floors above and below the
currently viewed floor in the Quick View.
Dynamic Attenuation Yes Incorporate AP to AP readings as well as site survey information and
dynamically recalculate the path loss of each radio to every grid cell on the
floor plan, increasing coverage and location accuracy.
Use Metric Units No Instructs the VisualRF engine to display all units of measurements in metric
Memory Allocation 512 MB The amount of memory dedicate to VisualRF. It is not dynamically allocated
and all the memory is consumed upon starting the service. Be sure to check
the memory and swap utilization in the Systems > Performance page before
making any changes. The exact amount of memory used per floor plan will
vary heavily based on the size, number of devices and number of grid cells on
the floor plan.
 25 floors or less 512 MB
 50 to 75 floors 1 GB
 75 to 100 floors 1.5 GB
 100 to 200 floors 3GB
 200 to 300 floors 5 GB (64-bit only)
 Above 300 8 GB (64-bit only)
NOTE: If you see Out of Memory errors in the SSL error log on the System >
Status page, you should increase memory allocation.
Core Threads 1 times number of
cores
Number of threads that calculate path loss for each floor. These threads also
regenerate a floor's RF properties when new APs, walls, or regions are added
to a floor plan.
Location Caching Threads 1 times number of
cores
Number of threads that calculate the location of all clients associated with
access points on this floor plan.
UI Threads 1 times number of
cores
Number of threads that service the users accessing QuickView, as well as
AMP-to-VisualRF communication.
NOTE: If users experience timeout errors while using QuickView, allocate
additional UI Threads.
Synchronization Timer 15 minutes This timer indicates how often VisualRF will synchronize security for APs
within AWMS.
Restrict visibility of empty
floor plans to the role of the
user who created them
No When enabled, only the creator can view an empty floor plan.