[Jscheme-devel] Re: High performance JScheme servlets?

[Timothy J. H. <ti...@cs...>]

On Sep 28, 2004, at 4:34 PM, Ken Anderson wrote:

> Tim,
>
> Your various servlets always read and evaluate a file, which is fine 
> for your course and development, but what about performance?
>
> Could we get a servlet that only reads the file once?  Or maybe even 
> never - it calls a function that its already loaded?

I haven't though much about it, but its a good idea.

A partial solution would be to write servlets as follows:
(servlet (a b c ... z)
   (use-module "/full/path/to/file/F.scm")
   (F a b c ... z)
)

The server would still have to read and parse the file, but it would be
a relatively small file.

One could also skip even this small amount of parsing by using a cache
to see if the file has been read before... (This would go in 
WEB-INF/scheme/scheme.sss)

I haven't tried either of these, but it would be interesting to see how 
much they improve
performance. (I've found httperf to be a nice tool for measuring 
servlet performance....)

---Tim---


> k
>