Re: [Gluster-devel] Local vs unify

[Gareth Bult]

>Are there some benchmrks available about this ?

I'm not entirely sure how useful benchmarks are, certainly in this context. As 
demonstrated by the benchmarks currently on the site, it's quite possible to 
make them show pretty much whatever you want if you pick your own context.

Gluster REALLY is quick in some contexts, certainly I can make Gluster look 
quick compared to NFS if we're talking about access to a single file or copying 
larger files. If on the other hand we're talking smaller files (i.e. many real 
world situations) then Gluster falls flat. "find" on a large gluster FS can 
take minutes rather than seconds on a local FS (for example).

It may of course be I'm doing it all wrong .. however (!) if I am, given the 
time I've spent and the fact that I do have it all working, there may be room 
for improvement when it comes to the documentation (!)

>local storeage CAN be notable

Note; gluster (in particular AFR) on large files is currently flawed (IMHO). 
gluster on lots of small files is, as far as I can see flawed in the context of 
being too slow compared to local file-system access. This is not to say that 
Gluster is not useful or that issues cannot be fixed.

You might be advised to setup your own test framework and test with your own 
data to get a true measure of how Gluster will perform for "you" in "your" 
environment ... Gluster is SO flexible, generic benchmarks can often be nothing 
more than speculation..

Just to clarify; I think Gluster's general design is second to none .. I just 
there there are still a few implementation glitches to work through ...

Gareth.


----- Original Message -----
From: "Alain Baeckeroot" <address@hidden>
To: address@hidden
Sent: Sunday, April 27, 2008 8:04:55 AM GMT +00:00 GMT Britain, Ireland, 
Portugal
Subject: Re: [Gluster-devel] Local vs unify

Le samedi 26 avril 2008, Gareth Bult a écrit :
> Technically, if you have local storage on each node then GlusterFS/Unify is a 
> useful solution, but the performance overhead compared to local storeage can 
> be notable. 
> 

Are there some benchmrks available about this ?

Regards
Alain Baeckeroot



_______________________________________________
Gluster-devel mailing list
address@hidden
http://lists.nongnu.org/mailman/listinfo/gluster-devel