How does image_lib perform under heavy usage?

[eluser]KeyStroke[/eluser]
Thanks Derek!

My application only uploads an image and creates two versions of it: thumbnail size and preview size (a little bit bigger). Do you think this will impact the performance of the server on concurrent uploads?

Also, I have two more questions if you guys don't mind:

1) Which configuration(s) should I modify on my server to handle uploads better? (if any)

2) How do you queue image resizing? and how come many sites (like facebook for example) upload and resize my images immediately? what are they doing differently?


Thanks