Date: Wed, 01 Dec 1999 15:38:53 -0700 From: "Justin T. Gibbs" <gibbs@FreeBSD.org> To: Archie Cobbs <archie@whistle.com> Cc: gibbs@FreeBSD.org (Justin T. Gibbs), cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/kern uipc_mbuf.c src/sys/sys mbuf.h Message-ID: <199912012238.PAA09252@caspian.plutotech.com> In-Reply-To: Your message of "Wed, 01 Dec 1999 15:27:45 PST." <199912012327.PAA45003@bubba.whistle.com>
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>> How does this work in a 0 copy system? > >Not sure what a '0 copy system' is.. > >Basically all it does is create a completely new mbuf chain containing >the same data as the original. Definitely at least 1 copy :-) There is support in the works for 0 copy transmission and receive for page sized/aligned packets on gig-E cards. In this situation, the kernel doesn't own the data and copying the mbuf chain could be expensive. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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