Date: Sun, 7 Aug 2005 23:21:28 -0500 (CDT) From: Mike Silbersack <silby@silby.com> To: Xin LI <delphij@frontfree.net> Cc: freebsd-performance@FreeBSD.org Subject: Re: [RFC] Bumping ufs.dirhash_maxmem to a larger value? Message-ID: <20050807232016.W9586@odysseus.silby.com> In-Reply-To: <20050807185129.GA61807@frontfree.net> References: <20050807185129.GA61807@frontfree.net>
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On Mon, 8 Aug 2005, Xin LI wrote: > [Bcc'ed to -developers@, so this can be discussed in a public list] > > Hi, > > It seems that vfs.ufs.dirhash_maxmem is set to 2MB. I think this value > is slightly too small for modern machines: > > My proposal is to increase the default dirhash_maxmem value to at least > 32MB or 64MB. Any objections? Scale it to the kernel map size by throwing something in the init_param3 function inside subr_param.c. That way all you have to do is put a floor on it, no need to worry about putting a ceiling on it. Mike "Silby" Silbersack
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