Date: Mon, 2 Jul 2007 00:52:29 +0300 From: Nikolay Pavlov <quetzal@zone3000.net> To: Nguyen Tam Chinh <unixvn@gmail.com> Cc: freebsd-stable@freebsd.org, FreeBSD-Questions <freebsd-questions@freebsd.org> Subject: Re: UFS2 optimization for many small files Message-ID: <20070701215229.GB10527@zone3000.net> In-Reply-To: <64b284310706270311j2a6af2f6i6766b483a4b66a5c@mail.gmail.com> References: <64b284310706270311j2a6af2f6i6766b483a4b66a5c@mail.gmail.com>
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On Wednesday, 27 June 2007 at 14:11:19 +0400, Nguyen Tam Chinh wrote: > Greetings, > > We're going to build a server with some 1Tb of over 500 million small > files with size from 0,5k to 4k. I'm wonder if the ufs2 can handle > this kind of system well. From newfs(8) the min block size is 4k. This > is not optimal in our case, a 1k or 0,5k block is more effective IMHO. > I'd be happy if anyone can suggest what does fragment (block/8) in the > ufs2 mean and how this parameter works. I know It's better to read the > full ufs2 specification, but hope that someone here can give a hint. > Please advice with optimizations or tricks. > Thank you very much. > > -- > With best regards, | The Power to Serve > Nguyen Tam Chinh | http://www.FreeBSD.org > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" I am not aware of any ZFS results on such tasks, may be you will be the one who share them ;) However RaiserFS whould be the best choise on such spesific case. It's not available on FreeBSD currently. I don't think UFS can handle a huge amount of small files effectively. Of course gjournal could be an option for fsck problems, but how do you plan to backup or sync this storage? -- ====================================================================== - Best regards, Nikolay Pavlov. <<<----------------------------------- ======================================================================
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