Comments on: Why Does A Computer Program Start Faster After I Have Already Opened It And Closed It?

By: Raymond

Raymond — Thu, 28 Jan 2010 13:20:52 +0000

Maybe clear your cache and run anti spyware [weekly]
TOOLS>INTERNET OPTION>delete Browsing History>click APPLY>OK
Also use some spyware removal tools
Routine maintenace weekly – free software
CCleaner – CLEAN and REGISTRY [BOTH}
SPYBOT Search and Destroy
Do this regularly

By: Tom V

Tom V — Thu, 28 Jan 2010 09:23:54 +0000

Probably because your computer doesn’t need to move as much of the program into main memory because it’s already there.
Your physical memory (RAM) is divided in to blocks called “pages” and when you start a program, your computer needs to read the program’s instructions off disk and store them into pages. When a page isn’t used in a long time, it is marked as “available” and given to some other program to load it’s instructions in to.
So, if you start up OpenOffice and it gets loaded into memory, then close it, then start it, the 2nd time you start it, most of the program should already be paged.

By: LoverOfW

LoverOfW — Thu, 28 Jan 2010 08:22:41 +0000

It’s because the program may be cached or the DLL’s it is using are cached or both. Depending on what you do between loading them you will notice a performance difference.
The O/S doesn’t load all libraries right away – it waits until their is a demand and then holds onto them, in memory, until it needs the space. So, first time you load them all the libraries they use have to be loaded. On subsequent loads the libraries are all in memory and only the application itself has be be loaded.