Cisco Headend Digital Broadband Delivery System Guida Utente

6-16 

Interactive Program Guide Options 

4002178 Rev C 

 Continued 

A site can now choose how the data for the current day and next day's data are 

purged, if at all. The current day grid data includes the program schedule (titles and 

show times) for the current day. The next day grid data includes the program 

schedule for the next day. The current day and next day description includes 

detailed information about each program for the day. 
For the current day and next day, you can select one of the following purge 

behaviors: 
• 

Never Purge—The data is never purged 

• 

Purge Only When Asked by Another App—The data is not purged unless another 

application requests SARA to minimize its memory usage 

• 

Automatic Priority-Based Purging—The data is automatically purged anytime a 

request comes in from SARA, the operating system, drivers, or any application 

when memory is otherwise not available. This setting affects the current and next 

day if so configured.  (Future days—days 3 and beyond—are always set to 

automatically purge.) When purged, the lowest priority data (future days) is 

purged first to free up memory for the requestor, followed by "next" day, and then 

"current" day, if needed and if configured to do so.  

Note:  Data for days in the past are always purged at midnight, when the day 

expires, regardless of this setting. 

The recommended/default values are as follows: 
• 

Current Day Grid—Never Purge 

• 

Current Day Description—Purge Only When Asked by Another App 

• 

Next Day Grid—Never Purge 

• 

Next Day Description—Automatic Priority-Based Purging