[Linux-cluster] GFS Tuning - it's just slow, to slow for production

[Carlos Maiolino]

On Thu, Mar 04, 2010 at 08:33:28AM -0600, Alan A wrote:
> We are trying to deploy GFS in production, and are experiencing major
> performance issues. What parameters in GFS settune can be changed to
> increase I/O, to better tune performance? Application we run utilizes a lot
> of I/O, please advise.
> 
> We experience OK performance when starting, but as things ramp up and we get
> few processes going GFS slows dramatically.
> 
> -- 
> Alan A.

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Hi Alan,

Are you using GFS1 or GFS2 ?

If you are using GFS1, try to use GFS2, GFS1 will be deprecated and GFS2 has a lot of "auto-tuning" parameters as default and the performance is better as well.
So, try to look at this document:

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Global_File_System_2/s1-manage-atimeconf.html

see ya

-- 
---

Best Regards

Carlos Eduardo Maiolino