Are we talking about perceived performance or actual performance? Most
of the time it is the front end that floors the perceived performance.
Perhaps you should have a look at this Yahoo research, it can be very
helpfull for performance improvements: 
http://developer.yahoo.com/performance/rules.html

Besides that you can turn of/strip symfony core stuff you don't need.

Kind regards,

Marijn

On Mar 7, 10:43 am, Jeremy Benoist <[email protected]> wrote:
> Hi,
>
> Do you already take a look to 
> :http://www.symfony-project.org/book/1_2/18-Performance
> ?
> Lots of good practice to learn in this page !
>
> Quick things I often use to improve performance :
> - use sf cache a lot ! (but cleverly)
> - use a php accelerator (APC, eAccelerator)
> - use a mify js/css
> - use a different cache than the sfFileCache (I often use
> sfSQLiteCache)
>
> Good luck :-)
>
> Jeremy
>
> On 7 mar, 08:06, Gareth McCumskey <[email protected]> wrote:
>
>
>
> > Greetings all,
>
> > We have recently released a project we have been working on for some months
> > now as an Alpha version and while we have focussed primarily on bug fixing
> > as well as feature completion for the next Alpha release coming up in a
> > week, I can't help but notice something disconcerting.
>
> > The project we have developed is a replacement of an existing product. The
> > previous version, coded before my time at the company, is old, procedural
> > and uses a very inefficient, un-normalised database structure.
>
> > For our new version, we decided to use symfony for maintainability reasons
> > as well as the fact that this version will be a lot more complex than its
> > predecessor so symfony's ability to simplify the development helps us
> > immensely.
>
> > The problem I have noticed is that the new symfony version seems to be
> > performing ... well ... badly. Loading pages on the new version takes a lot
> > longer, talkin 10-50 times longer than the previous version. I went so far
> > as to view the development logs and manually run SQL queries on our new
> > normalised database schema vs the old version un-normalised version and the
> > new schema performs batter by a factor of 100x so I know that it is
> > definitely not the database slowing things down. I even installed
> > eAccelerator and tested the PHP processing speeds after that but have noted
> > no significant changes.
>
> > My question .. are there any perrformance enhancements for symfony on a
> > production server that anyone can think of that might help the situation?
> > Also, does using Ajax loaded div's contribute negatively to the performance
> > issues?
>
> > Thanks and look forward to some tips :D
>
> > Gareth
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