Date: Wed, 7 Jul 1999 17:20:54 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: Matthew Dillon <dillon@apollo.backplane.com>, David Greenman <dg@root.com>, freebsd-hackers@FreeBSD.ORG, freebsd-current@FreeBSD.ORG Subject: Re: Heh heh, humorous lockup Message-ID: <Pine.BSF.3.95.990707172022.23943a-100000@current1.whistle.com> In-Reply-To: <199907080012.RAA19187@lestat.nas.nasa.gov>
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On Wed, 7 Jul 1999, Jason Thorpe wrote: > On Wed, 7 Jul 1999 16:55:28 -0700 (PDT) > Julian Elischer <julian@whistle.com> wrote: > > > or do what Kirk wants to do and merge the VM and Vnode structures > > I belive the UVM does a bit in this direction due to kirk's influence. > > A uvm_object is not a standalone thing in UVM. Every thing that's > mappable in UVM has a uvm_object embedded in it. > > In the case of vnodes, a vnode contains a uvm_vnode, which in turn contains > a uvm_object. This has direct performance benefits as described in both > Chuck's thesis and in his USENIX paper. > > Now, in the case of the chs-ubc2 branch of the NetBSD source tree, which is > where the unified buffer cache work is happening, there is almost no > distinction between a vnode and an object. Yes, I understand... I was simplifying :-) > > -- Jason R. Thorpe <thorpej@nas.nasa.gov> > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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