Date: Sun, 9 Feb 2003 09:17:38 -0500 From: Hiten Pandya <hiten@unixdaemons.com> To: Jeff Roberson <jroberson@chesapeake.net> Cc: arch@FreeBSD.ORG Subject: Re: New kernel allocation API Message-ID: <20030209141738.GA29856@unixdaemons.com> In-Reply-To: <20030209063342.W77658-100000@mail.chesapeake.net> References: <25848.1044781098@critter.freebsd.dk> <20030209063342.W77658-100000@mail.chesapeake.net>
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On Sun, Feb 09, 2003 at 06:35:05AM -0500, Jeff Roberson wrote the words in effect of: > On Sun, 9 Feb 2003 phk@phk.freebsd.dk wrote: > > > In message <20030209085317.GP88781@elvis.mu.org>, Alfred Perlstein writes: > > >* phk@phk.freebsd.dk <phk@phk.freebsd.dk> [030209 00:31] wrote: > > >> In message <20030209075706.GO88781@elvis.mu.org>, Alfred Perlstein writes: > > >> > > >> >I may see if I can convert some paths in the kernel to use zones. :) > > >> > > >> I have a number of places where zones can be used instead of malloc, > > >> but since none of the places I have tried previously have resulted > > >> in measurable performance differences it has not been high on my > > >> agenda. > > > > > >Well, once converted to zones they could also be modded to take > > >advantage of the init/fini processing which _should_ make things > > >faster. Also don't forget even if you don't see a perf improvement > > >you'll see siginifigant space savings if your size is not a power of > > >two or multiple of page size. > > > > I'm aware of all this, but I guess most of the objects I deal with > > don't really have enough trafic to come out measurable, probably > > because they don't contain mutexes. > > > > I did pipes once when I originally did UMA. The perf was measurable. It > had carefully crafted init/fini ctor/dtor though. Also, creds could > possibly benefit. > > UMA mbufs would rule too. :-) [ CC list trimmed ] Would it help with filesystems? -- Hiten Pandya (hiten@unixdaemons.com, hiten@uk.FreeBSD.org) http://www.unixdaemons.com/~hiten/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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