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Date:      Sun, 30 Dec 2012 21:47:49 +0100
From:      Paul Schenkeveld <freebsd@psconsult.nl>
To:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: UFS1 vs UFS2
Message-ID:  <20121230204749.GA2295@psconsult.nl>
In-Reply-To: <alpine.BSF.2.00.1212302128320.62548@wojtek.tensor.gdynia.pl>
References:  <alpine.BSF.2.00.1212301420030.3192@wojtek.tensor.gdynia.pl> <20121230193926.GA37126@psconsult.nl> <alpine.BSF.2.00.1212302041380.4966@wojtek.tensor.gdynia.pl> <20121230200307.GA69873@psconsult.nl> <alpine.BSF.2.00.1212302128320.62548@wojtek.tensor.gdynia.pl>

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On Sun, Dec 30, 2012 at 09:29:27PM +0100, Wojciech Puchar wrote:
> >
> > I don't think performance will be much different but if so, UFS1 would
> > be (sightly) faster than UFS2 because one page read will get more inodes
> > from disk and 32 bit (UFS1) arithmetic may be slightly faster than 64 bit
> > (UFS2).
> 
> thanks for answer i was looking for! i will rebuild FS to UFS1, saving ca 
> 1GB for inodes.

Also, look at the -i option of newfs, for many purposes the default
number of inodes it allocates is far more than sufficient

> > If performance is an issue, consider turning off atime updates or even
> > mount the filesystem read-only if possible.
> i always turn off atime and use softupdates.
> 
> it cannot be readonly.



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