[Gluster-users] Storage Cluster Question

[Francisco Cabrita]

On Mon, Jun 29, 2009 at 8:46 PM, Nathan Stratton <nathan at robotics.net>wrote:

> On Mon, 29 Jun 2009, Todd Daugherty wrote:
>
>  I have not used it in production yet but I did a test with:
>> http://gluster.org/docs/index.php/Translators/cluster/stripe
>>
>> That was quite nice across 8 servers for Quicktime files (average file
>> 1GB).
>>
>> Why would you say no to Xen VM files?
>>
>
> Because with xen you need to --disable-direct-io-mode to get it to work and
> that kills performance.
>
> Raw disk:
> 8589934592 bytes (8.6 GB) copied, 21.0523 seconds, 408 MB/s
>
> Gluster:
> 8589934592 bytes (8.6 GB) copied, 47.4356 seconds, 181 MB/s
>
> Gluster --disable-direct-io-mode
> 8589934592 bytes (8.6 GB) copied, 336.514 seconds, 25.5 MB/


autch, This is a huge penalty!

My primary VMs are for Nagios, Cacti and MySQL. Both Nagios and Cacti have
strong interaction with MySQL Vm which is storing thing on "file system". So
I think is is the key to move forward and choose another technology.

Francisco


>
>
>
>  <>
>>
> Nathan Stratton                                CTO, BlinkMind, Inc.
> nathan at robotics.net                         nathan at blinkmind.com
> http://www.robotics.net                        http://www.blinkmind.com
>
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-- 
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