Date: Sun, 21 Jan 2007 05:52:45 -0500 From: Randall Stewart <rrs@cisco.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: freebsd-net <freebsd-net@freebsd.org> Subject: Re: kern_mbuf.c patch Message-ID: <45B345FD.7080001@cisco.com> In-Reply-To: <17841.6943.770698.707214@grasshopper.cs.duke.edu> References: <45B0D2E3.9050203@cisco.com> <17841.6943.770698.707214@grasshopper.cs.duke.edu>
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Andrew Gallatin wrote: > Randall Stewart writes: > > nmbclusters = 1024 + maxusers * 64; > > + nmbjumbop = 100 + (maxusers * 4); > > The limit on page-size jumbos seems far too small. Since the socket > buffer code now uses page-sized jumbos, I'd expect to see its limit be > the same as nmbclusters. > > > Drew > Drew: Let me re-visit this .. I started real small on purpose.. so folks would complain ;-) How about if I calculate the number of pages the nmbclusters use (I will go look in the UMA structures) and then make it so the limit is the same number of pages (scaled like nmbclusters) for each of the larger clusters.. Does that sound about right... (for 4k it would mean you would have 1/2 as many as 2k... roughly.. depending on the o/h of the uma system of course.. need to go look at this). R -- Randall Stewart NSSTG - Cisco Systems Inc. 803-345-0369 <or> 803-317-4952 (cell)
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