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From: Willy Tarreau <w@1wt.eu>
To: Al Boldi <a1426z@gawab.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: compressing intermediate files with LZO on the fly
Date: Sat, 7 Apr 2007 13:58:30 +0200	[thread overview]
Message-ID: <20070407115830.GE943@1wt.eu> (raw)
In-Reply-To: <200704071432.34157.a1426z@gawab.com>

Hi Al,

On Sat, Apr 07, 2007 at 02:32:34PM +0300, Al Boldi wrote:
> Willy Tarreau wrote:
> >
> > ... for some usages (temporary space),
> > light compression can increase speed. For instance, when processing logs,
> > I get better speed by compressing intermediate files with LZO on the fly.
> 
> How can you do that on ext3?
> 
> Also, can you do that on a partition block-io level?

No, sorry for the confusion. My scripts simply do :

 $ lzop -cd file1.lzo | process | lzop -c3 > file2.lzo

With decent CPU, you can reach higher read/write data rates than what a
single off-the-shelf disk can achieve. For this reason, I think that
reiser4 would be worth trying for this particular usage. And in this case,
I'm not interested at all in reliability. It's just temporary storage. If
the disk fails, I throw it away and buy a new one.

Cheers,
Willy


  reply	other threads:[~2007-04-07 11:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-07 11:32 Al Boldi
2007-04-07 11:58 ` Willy Tarreau [this message]
2007-04-08  1:35   ` David Lang

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