AMX Modero ViewPoint MVP-8400 - Manual (Page 99)

Setup Pages
85 MVP Modero ViewPoint Touch Panels
Setting the image cache
In the Protected Setup page:
1. Press the Cache button in the Protected Setup Navigation Buttons section. This opens the Cache
Settings/Cache Setup page.
2. Set the cache expiration in the field Flash/RAM Cache Expires. The Up and Down arrows increment
through the available time frames.
3. Press the Enable button to turn on image caching. The button appears illuminated when enabled.
Select the Up and Down arrows for the field Flash Cache Size to increase or reduce the amount of Flash
memory used; the maximum amount of flash that can be allocated for caching is 75% of available flash.
Clearing the image cache
In the Protected Setup page:
1. Press the Cache button in the Protected Setup Navigation Buttons section. This opens the Cache
Settings/Cache Setup page.
2. Press Clear Cache. This clears all image cache currently stored on the panel (both Flash and
RAM).
Checking image cache status
In the Protected Setup page:
Press the Cache button in the Protected Setup Navigation Buttons section. This opens the Cache
Settings/Cache Setup page. All status information is located in the Image Cache Status section of the
page.
Cache Settings/Cache Setup Page Elements (Cont.)
RAM Max Size The maximum amount of memory available for all image caching.
RAM Current Size The memory that is currently in use for caching static and dynamic images.
RAM Hit Rate The percentage of image requests (static and dynamic) satisfied by accessing
the cache.
100 * (# of cache hits) / (# of cache hits + # of cache misses)
# of cache hits - the number of times an image was requested that the image
was found in the cache. If your hit rate is low, you may want to consider
enabling Flash cache.
# of cache misses - the number of times an image was requested that the
image could not be found in the cache, and the image had to either be loaded
from flash or obtained via the network (for dynamic images). It is considered a
RAM Cache Miss even if the image is subsequently found in flash cache.
Items in Cache (RAM) The number of images that are currently stored in the RAM cache.
Flash Current Size The maximum flash space allocated for image caching. Flash space is used for
caching only when there is not enough available memory in the RAM cache for
a newly requested image (it is used only for dynamic images).
Flash Hit Rate The percentage of image requests (dynamic only) that are satisfied by
accessing the flash cache.
100 * (# of flash cache hits) / (# of flash cache hits + # of flash cache misses)
# of flash cache hits - # of times a dynamic image could not be found in RAM
cache but was found in flash cache
# of flash cache misses - # of times a dynamic image could not be found in
either RAM or flash cache. RAM cache hits are not relevant in this calculation.
Items in Cache (Flash) The number of images that are currently stored in the Flash cache.