B/W bound, CPU bound or MEMORY bound?

in apache 2.0, each apache process uses aprx. 4-8 MB of RAM, in a general server with 512MB RAM, P4 2.4 GB CPU with 1000GB B/W, which one will be the first to saturate?

this server only runs apache, no DB, no DNS, no email, no shared hosting, no dynamic content, no .htaccess....only giving the same little (less than 4k, fit in 1 single packet) answer to every request

the apache is set to pre-span ~50 child processes and max request per child is set to ~1,000, no keepalive...

which point will be the first to saturate?

 

 

 

 

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