Bernd Walter wrote:
This is simple maths:
100k Sockets with 32k TX and 64k RX buffer take 9G Memory.
Just buffer space, not to mention socket state, ...
On i386 this is limited by kmem, which defaults to IIRC 512MB and
is limited by 32bit virtual address space on i386.
On amd64 depending on the OS version you can have a kmem of slighty
less than 2G max or several GB.
Nevertheless you are still limited with physical RAM.
Smaller buffers are possible, but usually people want larger buffers
to keep up with recent line speeds.
Today buffer sizes can be dynamic - don't know the exact details, but
you should keep in mind that 32k/96k is already quite small for
many purposes.

But physical memory is cheap, and most low-end machines can have 16G or more today. Is it just a matter of having enough RAM and a 64-bit OS then? How much is "several GB [kmem]" that you mention above?

 /Ragnar
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