Linux-kernel mailing list archive 1999-37,: Re: > 15K simultaneous connections EXAMPLE program/OS config needed,

# Re: > 15K simultaneous connections EXAMPLE program/OS config needed,

Steve Underwood (steveu@netpage.com.hk)
Fri, 17 Sep 1999 08:50:40 +0000

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Arjan van de Ven wrote:

> Dan Kegel had the wisdom to write:
> DK> Guess I should rename my page c100k.html :-)
>
> DK> Alan recently said that each handle takes up 20k in kernel space.
> DK> so 100,000 connections could take up 100k*20k = 2GB of RAM,
> DK> which might cause some trouble except on very recent kernels
> DK> (and maybe you still need a patch for this).
>
> Even worse, it would require > 64K ports for TCP/IP, and that is not
> possible...

You are assuming only one LAN interface. Its perfectly possible on a typical
modern machine with several 100Mbps NICs, providing the load is moderately
balanced.

Steve

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