[R] How to make R faster?

[Tim Churches]

ebashi wrote:

>Dear R users;
>I am using R for a project. I have some PHP forms that
>pass parameters to R for calculations, and publish the
>result in HTML format by CGIwithR. I'm using a Linux
>machine and every things work perfectly. However, it
>is  too slow, it takes 5 to 10 seconds to run, and
>even  if I start R from the Shell it takes the same
>amount of time, which is probably due to installing
>packages. My first question is that how can i make R
>run faster? and second if I am supposed to reduce the
>packages which are being loaded at initiation of R,
>how can I limit it to only the packages that i want?
>and third how can i make R not to get open each time,
>and let it sit on the server so that, when i pass
>something to it , i get result faster?
>  
>
Have a look at RSOAP, which does exactly what you suggest and allows you 
to commuicate with the R session via SOAP. I'm sure there are SOAP 
libraries available for PHP. See 
http://research.warnes.net/projects/rzope/rsoap/

Tim C