Setting The Image Cache; Clearing The Image Cache; Checking Image Cache Status - AMX NXD-1700VG Instruction Manual

Cache Settings Page Elements (Cont.)
RAM Hit Rate
Items in Cache (RAM)
Flash Current Size
Flash Hit Rate
Items in Cache (Flash)

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 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 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 page. All status
information is located in the Image Cache Status section of the page.
Modero VG Series Touch Panels - Instruction Manual
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.
The number of images that are currently stored in the RAM cache.
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).
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.
The number of images that are currently stored in the Flash cache.
Firmware Pages and Descriptions
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