Re: Slightly OT.

It does so well because it KICKS ICE!

On Fri, 1 Jun 2007, Joshua D. Drake wrote:

> Dave Page wrote:
>> Alexander Staubo wrote:
>>> On 6/1/07, Joshua D. Drake <jd(at)commandprompt(dot)com> wrote:
>>>>> In the meantime, Cybertec (http://www.postgresql.at/, an Austrian
>>>>> company) just announced a commercial synchronous multimaster
>>>>> replication product based on 2-phase commit. It's expensive, and I
>>> [snip]
>>>> I could be completely cranked but I believe that product is based on
>>>> PgCluster which is horrendously slow.
>>> Well, dang, that's disappointing. Last I checked, the PGCluster design
>>> was fundamentally unscalable.
>>
>> Multimaster replication generally is - thats why Slony-2 will almost
>> certainly never exist in the form that it was originally imagined.
>> Although I'm not (and never have been) an Oracle user, I've heard that
>> RAC has it's own issues in this area as well.
>
> IMO, the future is application partitioning, not multi-master.
>
> Also, what I find interesting here is that PostgreSQL on modest hardware does
> excessively well.
>
> I have a client right now that is running an 8 core, 16 gig box with only 14
> spindles.
>
> They are processing 6ktps and it takes 14 tomcat servers to bring the
> database down.
>
> Any multi-master solution is going to fall over well before 6ktps.
>
> Sincerely,
>
> Joshua D. Drake
>
> P.S. I should note that we are working toward more than 6ktps and will report
> back ;)
>
>>
>> Regards, Dave
>>
>
>
>

--
Louis Gonzales
louis(dot)gonzales(at)linuxlouis(dot)net
http://www.linuxlouis.net