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Re: dd PATCH: add conv=direct

From: Jim Meyering
Subject: Re: dd PATCH: add conv=direct
Date: Wed, 14 Apr 2004 21:28:12 +0200

Paul Eggert <address@hidden> wrote:
> Assuming Jim Meyering like the idea of adding O_DIRECT support to
> cp/mv, the next thing is to see how that might be done.

I'm inclined to support it, based on Philip's anecdote about
`cp' being much more efficient when using O_DIRECT.

Philip, before we go too much further, can you describe the
circumstances (hardware, OS, file system type, file sizes) under
which O_DIRECT helps, and how much of a performance improvement
to expect?  It would probably be enough just to describe your graph
and the test conditions.

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