Date: Mon, 30 Oct 2000 11:27:50 -0800 From: David Greenman <dg@root.com> To: Bosko Milekic <bmilekic@dsuper.net> Cc: freebsd-net@FreeBSD.ORG, freebsd-arch@FreeBSD.ORG Subject: Re: MP: per-CPU mbuf allocation lists Message-ID: <200010301927.LAA01623@implode.root.com> In-Reply-To: Your message of "Mon, 30 Oct 2000 13:20:52 EST." <Pine.BSF.4.21.0010301256580.30271-100000@jehovah.technokratis.com>
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> I recently wrote an initial "scratch pad" design for per-CPU mbuf > lists (in the MP case). The design consists simply of introducing > these "fast" lists for each CPU and populating them with mbufs on bootup. > Allocations from these lists would not need to be protected with a mutex > as each CPU has its own. The general mmbfree list remains, and remains > protected with a mutex, in case the per-CPU list is empty. I have only one question - is the lock overhead really so high that this is needed? -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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