> > * Each Apache process is consuming 80-100MB of RAM. > * Squid is consuming 666MB of RAM > * memcached is consuming 822MB of RAM > * mysqld is consuming 886MB of RAM > * The kernel is using 110MB of RAM for buffers > * The kernel is using 851MB of RAM for file cache (which benefits squid). > > And, not RAM, but potentially of interest for the curious: > * The MySQL db is consuming 3.8GB on disk. > * The Squid cache is about 9.2GB on disk. >
As Jerry did not specify which content his apache is serving, I used 12MB of RAM per apache process (as a general rule of thumb). But if it's dynamic content generated by a scripting language like php it could be a lot more. But I think 80-100MB of RAM with php in the back should be a good guess. Important thing is: MaxClients x memory footprint per apache process < available memory :-) If you have lots of concurrent requests you may be better suited with something lighter.... like lighttpd. Or start caching of some sort, like Michael does.
