[hunchentoot-devel] Re: Static file handling performance

[Andrei Stebakov]

I forgot to mention that this is only for text static files like html.

On Fri, Jun 20, 2008 at 12:56 PM, Andrei Stebakov <lispercat at gmail.com>
wrote:

> I had to come up with some way to cache dynamic files that I have to serve,
> so I ended up with a bunch of static files which I served by a simple
> function:
> (defun file-to-string (path)
>   "Reads a file into a string"
>   (if (probe-file path)
>       (with-open-file (in path)
>         (let ((str (make-string (file-length in))))
>           (read-sequence str in)
>           str))))
>
> The performance was very good, but then I thought that it's not the proper
> way to serve static files as there is a hunchentoot function
> handle-static-file.
> When I started using the hunchentoot's function the response time almost
> tripled and when I run "top" program to monitor CPU usage it jumps up to 60%
> (on my PIII 600 MHz) CPU,
> whereas using file-to-string CPU usage stays with 2% (maybe because the
> serving time is much shorter top doesn't catch that CPU peak).
> My question is what could be the reason I see this behaviour? (I am using
> SBCL 1.0.15 with latest dependences of hunchentoot-0.15.7)
>
> Thank you,
> Andrew
>
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