Date: Fri, 19 Jun 2009 07:59:54 -0700 (PDT) From: Barney Cordoba <barney_cordoba@yahoo.com> To: net@freebsd.org, current@freebsd.org, Jeff Roberson <jroberson@jroberson.net> Subject: Re: mbuf layout optimizations Message-ID: <603332.84337.qm@web63906.mail.re1.yahoo.com>
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--- On Fri, 6/19/09, Jeff Roberson <jroberson@jroberson.net> wrote: > From: Jeff Roberson <jroberson@jroberson.net> > Subject: mbuf layout optimizations > To: net@freebsd.org, current@freebsd.org > Date: Friday, June 19, 2009, 5:12 AM > http://people.freebsd.org/~jeff/mbuf2.diff > > Hello, > > This is a call for testers and feedback on my mbuf layout > improvements. I'm trying to decide whether I will push to > have these included in 8.0. After reducing the scope > slightly from my last patch, I have not encountered any > problems. Kip Macy has also been using it for the past > few weeks without issue. > > You should not expect any functional changes from this > patch. The goal is mostly to pave the way fors more > sensible mbuf handling in the future, although it does offer > a few performance benefits. > > The only issue is that cxgb support requires another set of > patches from Kip. If anyone needs those I will prod > him to reply with that diff. > > Thanks, > Jeff I thought that the purpose of m_tags was to keep individual applications from having to "patch" mbufs. Has that idea proven to be too performance-challenged? Barney
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