Date: Thu, 27 Aug 1998 14:27:34 -0400 (EDT) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: Julian Elischer <julian@whistle.com> Cc: net@FreeBSD.ORG Subject: Re: Next big network patch: specialized sosend for TCP Message-ID: <199808271827.OAA10118@khavrinen.lcs.mit.edu> In-Reply-To: <Pine.BSF.3.95.980827105010.3468C-100000@current1.whistle.com> References: <199808270155.VAA07365@khavrinen.lcs.mit.edu> <Pine.BSF.3.95.980827105010.3468C-100000@current1.whistle.com>
next in thread | previous in thread | raw e-mail | index | archive | help
<<On Thu, 27 Aug 1998 10:57:57 -0700 (PDT), Julian Elischer <julian@whistle.com> said:
> On Wed, 26 Aug 1998, Garrett Wollman wrote:
> can be rewritten to:
>> + if (resid >= MINCLSIZE) {
>> + MCLGET(m, M_WAIT);
>> + if (m->m_flags & M_EXT)
>> + mlen = MCLBYTES;
>> + }
>> + len = min(min(mlen, resid), space);
There's a lot more work to be done in here. For example, one of the
things I'd like to see is whether sucking the data in MSS-sized chunks
helps or hurts us. I think we may also see a win by aligning short
packets against the end of the mbuf, so that when TCP m_prepend()s its
headers, it doesn't need to allocate another buffer. (This is still
really klugey; hopefully I'll get a chance to finish my UDP work which
is much more fully-formed.)
-GAWollman
--
Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu | O Siem / The fires of freedom
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-net" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199808271827.OAA10118>