Date: 14 Dec 2000 12:28:40 +0100 From: Dag-Erling Smorgrav <des@ofug.org> To: Tony Finch <dot@dotat.at> Cc: Gustavo Vieira Goncalves Coelho Rios <gustavo@ifour.com.br>, hackers@FreeBSD.ORG Subject: Re: very big mail spool directory Message-ID: <xzpbsufz1g7.fsf@flood.ping.uio.no> In-Reply-To: Tony Finch's message of "Wed, 13 Dec 2000 21:44:04 %2B0000" References: <3A368F8C.1918684F@ifour.com.br> <xzpsnns4jvx.fsf@flood.ping.uio.no> <20001213214404.P71002@hand.dotat.at>
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Tony Finch <dot@dotat.at> writes: > Why a prime number? All you need is an even spread, and given that > user IDs are usually allocated sequentially any modulus will do. Because a prime number is less likely to cause an imbalance in where files are actually stored on disk - just like you want an odd (and preferably prime) stripe size on RAIDs to (amongst other reasons) avoid having all the superblock backups end up on the same disk. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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