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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
http://oss.oracle.com/~bryce/cp.gif
and the test conditions.
- Re: dd PATCH: add conv=direct, (continued)
- Re: dd PATCH: add conv=direct, Anton Blanchard, 2004/04/10
- Re: dd PATCH: add conv=direct, Wim Coekaerts, 2004/04/10
- Re: dd PATCH: add conv=direct, Jim Meyering, 2004/04/10
- Message not available
- Message not available
- Message not available
- coreutils patch to align buffers better, Paul Eggert, 2004/04/13
- Re: coreutils patch to align buffers better, Jim Meyering, 2004/04/15
- Message not available
- Message not available
- Message not available
- Re: dd PATCH: add conv=direct, Paul Eggert, 2004/04/13
- Re: dd PATCH: add conv=direct, Bryce, 2004/04/14
- Re: dd PATCH: add conv=direct, Paul Eggert, 2004/04/14
- Re: dd PATCH: add conv=direct,
Jim Meyering <=
- Re: dd PATCH: add conv=direct, Bryce, 2004/04/15
- Re: dd PATCH: add conv=direct, Bryce, 2004/04/15
- Re: dd PATCH: add conv=direct, Paul Eggert, 2004/04/07
- Re: dd PATCH: add conv=direct, Andrew Morton, 2004/04/08
- Re: dd PATCH: add conv=direct, Andy Isaacson, 2004/04/08
Re: dd PATCH: add conv=direct, Nathan Straz, 2004/04/08
Re: Re: dd PATCH: add conv=direct, Paul Eggert, 2004/04/08