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My advice is, IMHO. HEAPS of stuff, in no particular order.
depending where/what your bottlenecks are. I'm assuming you want to bring the volume of traffic down.
You seem to be running apache on Linux (or at least your hosting provider, voice valley is, depending on your set-up).
Install mod_gzip or mod_deflate, that will bring your text serving size down HEAPS for surprisingly little processing overhead. If you find you're losing too many CPU cycles, i'd suggest tuning the level of compression so that the response time is good but you also get reasonable compression.
grep your apache logs into a mysql table. Do a 'group by' query and accumulate the number of hits per URI multiplied by the byte size of the responses.
You'll find that the data is skewed to a few objects, which will probably be binary photographs. unlink the photographs.
depending on the distribution of bytes / response objects, a reverse proxy might also help serve common, static objects.
Check that your conditional requests are actually working. If clients are sending IMS requests and your server is sending back objects when it should be a positive cache acknowledgment.
If processing is your bottleneck, depending on the level of access you have to the machine i'd probably install zend optimizer, it is apparently compatible with suhosin.
If the DB is your bottleneck, you might need to look towards replication - which is probably too expensive.
The main page http://www.aulro.com/ is FAR too large, 119.7k. Pull the CSS out into a separate file, each time someone loads the main page, they keep downloading the static CSS, it should be seperate and locally cached. Most/all of the javascript should also be placed in seperate objects.
I'd pull all the whitespace from it too. It's just wasted.
100 characters of space are great, but if one hundred people load the page, thats 10kb.
think about removing dynamic content, like the time, from pages that are not otherwise changed. This will allow the content to be cached.
...
are you serving any content other than this forum?
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