Date: Mon, 3 Dec 2007 19:19:05 +0900 From: Pyun YongHyeon <pyunyh@gmail.com> To: Alan Cox <alc@cs.rice.edu> Cc: net@freebsd.org Subject: Re: physically contiguous jumbo frames Message-ID: <20071203101905.GG23527@cdnetworks.co.kr> In-Reply-To: <4751CC5B.3080402@cs.rice.edu> References: <4751CC5B.3080402@cs.rice.edu>
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On Sat, Dec 01, 2007 at 03:04:27PM -0600, Alan Cox wrote: > The reimplementation of contigmalloc(9) in HEAD and RELENG_7 makes the > allocation of physically contiguous jumbo frames a real possibility. If > you're using jumbo frames, please test the attached patch. Andrew > Gallatin has already tested this patch with mxge and asked that I bump > __FreeBSD_version. > > Thanks, > Alan > This is great news. I've tried to modify nfe(4) to use UMA backed jumbo frame instead of local allocator and it showed very good results. After 7.0 goes out I'll fix msk(4)/nfe(4) and ti(4). It seems that lge(4) also uses local allocator but I don't have that hardware so lge(4) wouldn't be fixed. Here is patch for nfe(4) that takes advantage of UMA backed jumbo frame. http://people.freebsd.org/~yongari/nfe/nfe.jumbo.patch Thanks so much! -- Regards, Pyun YongHyeon
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