Re: [Postgres-xc-general] Our general use case

[Joseph G. <jos...@or...>]

On 13 November 2012 18:13, Vladimir Stavrinov <vst...@gm...> wrote:
> On Fri, Nov 9, 2012 at 12:15 AM, Joseph Glanville
> <jos...@or...> wrote:
>
>> With SSDs and Infiniband (DRBD supports Sockets Direct Protocol over
>> RDMA) you can achieve close to native performance due to very low
>
> If "native performance" means performance of standalone (without DRBD)
> server, then ...
>
>> However, application level replication is superior in everyway.
>
> what means "superior" against "close to native performance" above?

Not everything is about performance. Application level replication
will always be superior for other reasons.

>
> And what about ceph? I am thinking about it, but never tested yet and
> have no information about using it with database.

Ceph RBD or CephFS?

CephFS is currently too unstable to be used in production.

RBD is stable but it's not optimized for performance, especially not
for random IO workloads.

>
> --
> **********************************
> ##  Vladimir Stavrinov
> ##  vst...@gm...
> **********************************



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