Web server memory usage...

swhitmire

Reputable Poster
So, how much memory do people out there have on 9.0 web servers, with how many users on each server? We're in the process of upgrading from Xe to 9.0, and I'm wondering if what I've allocated is reasonable or if we're going to need more. Answers involving AIX and WebSphere will be especially interesting to me, but any info will help, thanks!
 
As far as I've seen, the memory requirements aren't very different from Xe. The Java heap memory that is recommended is about the same size for 9.0, roughly 1 GB of RAM. Add on whatever is needed for the base OS and the amount used for WebSphere and the HTTP Server, and you've got about 2 GB + 1 GB per instance, perhaps more on an AS/400.

One instance will still handle more than 100 users, but I like to keep no more than 50 users on each instance.

I've mainly worked on Windows and AS/400 platforms, though I believe AIX was close from the last time I worked on it (early last year, using WebSphere 6.1).
 
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