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Date:      Mon, 3 Feb 2003 20:37:26 -0800
From:      David Schultz <dschultz@uclink.Berkeley.EDU>
To:        Ryan Dooley <ryan@third-man.com>
Cc:        stable@FreeBSD.ORG
Subject:   Re: recommendations on the newfs of a 1.0TB fs...
Message-ID:  <20030204043726.GA4323@HAL9000.homeunix.com>
In-Reply-To: <20030203194828.GA55143@elvis.mu.org>
References:  <20030203194828.GA55143@elvis.mu.org>

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Thus spake Ryan Dooley <ryan@third-man.com>:
> I'm looking for recommendations on the newfs options for a 1.0TB file system
> for say /home (it's a fileserver for 52000+ accounts that range from having
> 4k to 40GB in their directories.)
> 
> When I initally created the file system, the options I set are: block size of
> 65536 and a fragsize of 8192.  

IIRC, block sizes greater than 16384 can cause significant buffer
cache fragmentation, which can reduce I/O performance.  Moreover,
blocks that large will waste space and I/O bandwidth unless most
of the files on the disk are very large.  A smaller setting,
e.g. the default, is probably more appropriate.

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