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Subject: Re: svn commit: r289405 - head/sys/ufs/ffs
To: Bruce Evans <brde@optusnet.com.au>, Warner Losh <imp@freebsd.org>
References: <201510160306.t9G3622O049128@repo.freebsd.org>
 <20151016151349.W1280@besplex.bde.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
From: Hans Petter Selasky <hp@selasky.org>
Message-ID: <5620B15C.8090104@selasky.org>
Date: Fri, 16 Oct 2015 10:12:12 +0200
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On 10/16/15 08:21, Bruce Evans wrote:
> In addition, making the file contiguous in LBA space doesn't
>   improve the access times from flash devices because they have no seek
> time.

Hi,

This is not exactly true, like Bruce pointed out too. Maybe there should 
be a check, that if the block is too small reallocate it, else leave it 
for the sake of the flash. Doing 1K accesses versus 64K accesses will 
typically show up in the performance benchmark regardless of how fast 
the underlying medium is.

--HPS