excessive RAM consumption - memory leak

[Igor Sysoev]

On Thu, Feb 21, 2008 at 01:22:08AM +0300, Igor Sysoev wrote:

> On Wed, Feb 20, 2008 at 10:59:54PM +0100, Todd HG wrote:
> 
> > Igor Sysoev wrote:
> > > On Wed, Feb 20, 2008 at 10:22:52PM +0100, Todd HG wrote:
> > > 
> > >> 
> > >> /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
> > >> 9328  9327  8.8 11192 - nginx: worker process
> > >> 9329  9327  8.7 13200 - nginx: worker process
> > >> 23660 23641  0.0  5136 pipe_w egrep (nginx|PID)
> > >> 
> > >> I also have configured:
> > >> 
> > >>     client_header_timeout  3m;
> > >>     client_body_timeout    3m;
> > >>     send_timeout           3m;
> > > 
> > > What gzip settings do you use ?
> > 
> >     gzip on;
> >     gzip_min_length  1100;
> >     gzip_buffers     4 8k;
> >     gzip_types       image/jpg image/jpeg image/gif image/png text/plain 
> > text/xml application/xhtml+xml text/css application/xml image/svg+xml 
> > application/rss+xml application/atom_xml application/x-javascript 
> > application/x-httpd-php application/x-httpd-fastphp 
> > application/x-httpd-eruby text/html;
> >     gzip_comp_level 9;
> 
> This is cause of memory and CPU consumption. You do not need to compress
> already compressed jpegs/etc. If you serve images only, you should turn
> gzip off at all (it's default).
> 
> As to other MIME types:
> 
> 1) there are no such types as
>    application/x-httpd-php
>    application/x-httpd-fastphp
>    application/x-httpd-eruby
> they probably exist as internal MIME-types inside Apache, but they are
> never showed to a client.
> 
> 2) the following types as
>    application/xhtml+xml
>    application/rss+xml
>    application/atom_xml
> 
> probably do not exist too.
> 
> Keep the list as small as possible, because nginx iterates it sequenctally.

image/jpg does not exist too.

By default nginx in conf/mime.type uses text/xml for xml and rss, so
application/xml is duplicate.


-- 
Igor Sysoev
http://sysoev.ru/en/