Em Fri, Dec 21, 2001 at 11:54:38AM -0200, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Dec 20, 2001 at 12:21:26AM -0800, David S. Miller escreveu:
> > I'd rather you pass the "kmem_cache_t" directly into sk_alloc, use
> > NULL for "I don't have any extra private area".
> >
> > And then, for the IP case lay it out like this:
> >
> > struct sock
> > struct ip_opt
> > struct {tcp,raw4,...}_opt
> >
> > And use different kmem_cache_t's for each protocol instead of
> > the same one for tcp, raw4, etc.
> >
> > RAW/UDP sockets waste a lot of space with your current layout.
Done, patch available at:
http://www.kernel.org/pub/linux/kernel/people/acme/v2.5/2.5.2-pre1/
sock.cleanup-2.5.2-pre1.bz2
Current state of /proc/slabinfo:
[acme@rama2 acme]$ grep sock /proc/slabinfo
unix_sock 7 20 400 1 2 1 : 17 572 2 0 0
raw4_sock 0 10 376 0 1 1 : 1 3 1 0 0
udp_sock 6 10 372 1 1 1 : 7 31 1 0 0
tcp_sock 13 15 800 3 3 1 : 14 47 3 0 0
sock 0 0 336 0 0 1 : 0 0 0 0 0
TODO: do the same for IPv6, that now has only one slabcache for all its
protocols.
- Arnaldo
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