SMF and PHP memory usage file upload

I'm helping out in a forum that runs on SMF. The site has been lagging recently and our host tells us it's the file uploads that clogs the servers me开发者_Python百科mory and that SMF is using server memory in a non optimized way. There's probably one file upload every hour at most so the load isn't that high.

Any thoughts on this? I don't know php to the extent that i can argue against them.

If PHP is run as an Apache module, used memory will not always be returned when the PHP script ends. There are a couple of ways to fix this:

• Use less memory in your script (obviously)
• Run your script as CGI instead of as an Apache module (this way, the memory will be returned on script exit)
• Restart Apache when the memory needs to be reclaimed. This is not really a good solution, but we do it at Levonline twice a day...
• Upgrade your hosting to your own server, where you don't have to think about the hosting provider's other customers, and can use as much memory as you want.