[Gluster-users] Performance expectations

[Gennadiy Nerubayev]

On Mon, Mar 23, 2009 at 10:55 AM, Gennadiy Nerubayev <parakie at gmail.com>wrote:

> Hi all,
>
> I'm using 2.0.0rc4 on a pair of infiniband connected servers. Both servers
> are running 2.6.28.7, and are using ext4 on a local raid set as the storage
> for Gluster. The speeds that I get writing to the aforementioned ext4 mount,
> depending on benchmark and method, vary around 400MB/s (with dd) to 550MB/s+
> (with iozone, bonnie, and dd directio). Next, I used the Gluster server and
> client on both servers, with ib-verbs and replicate (see attached
> configuration files). The best speeds that I get when writing to the Gluster
> mount with this setup is about 150MB/s, going up to about 200MB/s when doing
> simultaneous writes from both nodes. I tried a couple of configuration
> tweaks such as writeback, but they don't seem to be having much effect.
>
> Is there something I can do to bring the performance closer to the native
> disk speed, or are there some inherent limitations somewhere that I should
> be aware of?


Woops, was making some interim changes to the server names and forgot to
change that in the saved config file for the client. Reattached, sorry for
the self reply.

-Gennadiy
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