How does image_lib perform under heavy usage?

[eluser]Mellis[/eluser]
[quote author="KeyStroke" date="1217247730"]Hi,

I've implemented an image upload/resize function on my site yesterday. I had to do some tweaks so I don't get that "memory exhausted" issues when resizing. Now it's running pretty smoothly.

What I'd like to know is, how would file uploads perform when used by say 1000 users at the same time? will it exhaust the server? if so, then what are the alternatives?


Appreciate your help[/quote]

Could you explain what tweaks you are talking about?
I'm having a little trouble with the exhausted memory...