On Thu, Mar 07, 2013 at 09:48:19AM -0500, David F. Skoll wrote: > > I think if you measure what happens to Perl processes that fork a number > of children to handle requests, you'll see that there's very little memory > sharing after a short while.
Please let's stop the techno-theorizing and provide actual results. We already had this exact same discussion atleast once *sigh*. Start something like: spamd -4 -p 1234 --min-children=50 --min-spare=50 --max-conn-per-child=1000 --round-robin -L 50 non-recycled childs, fed 1000 requests (~20 each). Memory measured with "free" (without buffers/cache etc): begin 2588084 end 1296756 About 25MB non-shared memory used per child, which is pretty normal since SA uses lots of internal per-message data. On 32-bit systems the usage could be half of that. So in the case of SA, it's not anywhere near "very little memory shared after a short while".
