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Date: Tue, 13 Mar 2007 15:10:41 +0100 From: Eric Dumazet <dada1@...mosbay.com> To: Andi Kleen <ak@...e.de> Cc: netdev@...r.kernel.org, davem@...emloft.net Subject: Re: [PATCH] Shrink struct dst_entry a bit On Tuesday 13 March 2007 14:48, Andi Kleen wrote: > The ICMP rate limiting state can be shorts, we don't send that many ICMPs. > Changing flags to short and reorder fields to be sorted by size to avoid > holes. Move cold fields towards the end. > Nope, you cannot break the reordering I've done one month ago. http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.22.git;a=commit;h=1e19e02ca0c5e33ea73a25127dbe6c3b8fcaac4b [NET]: Reorder fields of struct dst_entry This last patch (but not least :) ) finally moves the next pointer at the end of struct dst_entry. This permits to perform route cache lookups with a minimal cost of one cache line per entry, instead of two. Both 32bits and 64bits platforms benefit from this new layout. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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