Date: Wed, 25 Jul 2001 13:51:51 -0400 (EDT) From: Zhihui Zhang <zzhang@cs.binghamton.edu> To: Terry Lambert <tlambert2@mindspring.com> Cc: vishwanath pargaonkar <vishubp@yahoo.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: cluster size Message-ID: <Pine.SOL.4.21.0107251350010.20991-100000@opal> In-Reply-To: <3B5E69C5.3D3C259E@mindspring.com>
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On Tue, 24 Jul 2001, Terry Lambert wrote: > Zhihui Zhang wrote: > > > Hi, > > > in freebsd can we change the cluster size from 2048 > > > bytes.If yes how can we do that? > > > do we have to configure in some file? > > > > You must be asking why the mbuf cluster size is chosen as 2048, right? It > > is probably a tradeoff between memory efficient and speed. > > Ask yourselves: > > "What is the minimum cluster size I would have to have > to be able to contain the maximum MTU worth of data, > yet remain an even multiple of sizeof(mbuf) -- 256 > bytes?" A dumb question: why even not odd multiple? -Zhihui To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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