Date: Sun, 03 Feb 2008 15:20:42 -0800 From: Julian Elischer <julian@elischer.org> To: =?UTF-8?B?RGFnLUVybGluZyBTbcO4cmdyYXY=?= <des@des.no> Cc: freebsd-hackers@freebsd.org, Kris Kennaway <kris@FreeBSD.org>, Robert Watson <rwatson@FreeBSD.org>, Alexander Motin <mav@FreeBSD.org>, freebsd-performance@freebsd.org Subject: Re: Memory allocation performance Message-ID: <47A64C4A.5020002@elischer.org> In-Reply-To: <86ejbumejj.fsf@ds4.des.no> References: <47A25412.3010301@FreeBSD.org> <47A25A0D.2080508@elischer.org> <47A2C2A2.5040109@FreeBSD.org> <20080201185435.X88034@fledge.watson.org> <47A43873.40801@FreeBSD.org> <20080202095658.R63379@fledge.watson.org> <47A4E934.1050207@FreeBSD.org> <47A4F1AF.9090306@FreeBSD.org> <20080202224923.T66602@fledge.watson.org> <47A55209.9040106@elischer.org> <86ejbumejj.fsf@ds4.des.no>
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Dag-Erling Smørgrav wrote: > Julian Elischer <julian@elischer.org> writes: >> Robert Watson <rwatson@FreeBSD.org> writes: >>> be a good time to try to revalidate that. Basically, the goal would >>> be to make the pcpu cache FIFO as much as possible as that maximizes >>> the chances that the newly allocated object already has lines in the >>> cache. It's a fairly trivial tweak to the UMA allocation code. >> you mean FILO or LIFO right? > > Uh, no. You want to reuse the last-freed object, as it is most likely > to still be in cache. > > DES exactly.. FILO or LIFO (last in First out.)
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