Ext3: changes to increase the speed?

Ext3: changes to increase the speed?

[Eriberto]

Hello all,

I tested ext3 performance recently and the results were very good. I
used a script to create 40.000 files into ext3 partition and the speed
was 4 seconds. One year before, the result was 55 seconds. Which the
cause of this speed increase?

PS: I used Debian Etch.

Thanks in advance!

Eriberto - Brazil

Re: Ext3: changes to increase the speed?

[Andreas Dilger]

On Apr 01, 2007  12:11 -0300, Eriberto wrote:
> I tested ext3 performance recently and the results were very good. I
> used a script to create 40.000 files into ext3 partition and the speed
> was 4 seconds. One year before, the result was 55 seconds. Which the
> cause of this speed increase?

Likely the mke2fs is enabling the "dir_index" feature by default now.  This
shows dramatic performance improvements with > 10000 files per directory.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

Re: Ext3: changes to increase the speed?

[coly]

Eriberto:

Which mode do you use for mount (data=writeback, data=ordered, or
data=journal) ?  I tested to create 1000,000 files in a directory
mounted with data=journal option, on a 24GB 7200rpm IDE harddisk, it
spent me more then 7 hours.

Best regards.

Coly

在 2007-04-01日的 12:11 -0300，Eriberto写道：
> Hello all,
> 
> I tested ext3 performance recently and the results were very good. I
> used a script to create 40.000 files into ext3 partition and the speed
> was 4 seconds. One year before, the result was 55 seconds. Which the
> cause of this speed increase?
> 
> PS: I used Debian Etch.
> 
> Thanks in advance!
> 
> Eriberto - Brazil
> 
> -
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Re: Ext3: changes to increase the speed?

[Eriberto]

Hi! I used ordered mode on a Sempron 3000+ / 5400 rpm.

Regards,

Eriberto - Brazil

coly escreveu:
> Which mode do you use for mount (data=writeback, data=ordered, or
> data=journal) ?  I tested to create 1000,000 files in a directory
> mounted with data=journal option, on a 24GB 7200rpm IDE harddisk, it
> spent me more then 7 hours.