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Date:      Thu, 11 Jul 2002 14:31:43 -0400 (EDT)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        Alfred Perlstein <bright@mu.org>
Cc:        net@freebsd.org
Subject:   Re: the incredible shrinking socket
Message-ID:  <15661.53007.18632.609465@grasshopper.cs.duke.edu>
In-Reply-To: <20020707083710.GM97638@elvis.mu.org>
References:  <20020707083710.GM97638@elvis.mu.org>

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Alfred Perlstein writes:
 > Some time ago I noticed that there appeared to be several members
 > of struct socket that were either only used by listen sockets or
 > only used by data sockets.
 > 
 > I've taken a stab at unionizing the members and we wind up saving
 > 28 bytes per socket on i386, and probably nearly double that on
 > any 64 bit platform.  That's ~15%, which isn't too shabby.
 > 

Speaking of 64-bit platforms:  While you are shrinking sockets, can
you change the longs in struct sockbuf into ints?  I see no reason
to use 64-bit longs for those fields.  That should dramatically shrink
a socket on 64-bit platforms.

Thanks,

Drew

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