Two types of performance:

1)There's two different ways to look at a website's performance. First of all there's raw server performance. How many page request can a server handle before it collapses under load and more important: how fast can it process them. On a high volume website this aspect of performance is very important because it determines how many users a machine can serve before additional server capacity is needed.

2)The second way to look at performance is what we could call 'perceived performance'. It's the speed at which your site appears to perform to the user. Even if your server is capable of serving all files required to render your website's pages in a visitor's browser as fast as it gets, your site may still appear slow to the user.


thanks,
venkatbi