Re: postgresql and openmosix migration

From: "Bill" <bill(at)math(dot)uchicago(dot)edu>
To: "Josh Berkus" <josh(at)agliodbs(dot)com>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: postgresql and openmosix migration
Date: 2004-06-22 17:31:15
Message-ID: 008201c4587e$b8856510$dfc58780@billnotebook
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Ok, so maybe someone on this group will have a better idea. We have a
database of financial information, and this has literally millions of
entries. I have installed indicies, but for the rather computationally
demanding processes we like to use, like a select query to find the
commodity with the highest monthly or annual returns, the computer generally
runs unacceptably slow. So, other than clustring, how could I achieve a
speed increase in these complex queries? Is this better in mysql or

----- Original Message -----
From: "Josh Berkus" <josh(at)agliodbs(dot)com>
To: "Bill" <bill(at)math(dot)uchicago(dot)edu>; <pgsql-performance(at)postgresql(dot)org>
Sent: Tuesday, June 22, 2004 11:31 AM
Subject: Re: [PERFORM] postgresql and openmosix migration

> Bill,
> > Any ideas of how I can cluster my database (around 800 GB
> > in size so even partial replication is not really practical)?
> Um, raise $150,000 to pay for a clustering implementation?
> Various techniques of "shared memory clustering" have been tried with
> PostgreSQL, and none work. Neither does LinuxLabs "ClusGres", which is
> based on similar principles -- unfortunately. (at least, LL repeatedly
> postponed the demo they said they'd give me. I've yet to see anything
> working ...)
> Frankly, we're waiting for a well-funded corporation to jump in and decide
> they want PostgreSQL clustering. Database server clustering is a "big
> ticket item" requiring roughly 1,000 hours of programming and
> troubleshooting. As such, you're not likely to see it come out of the
> community unaided.
> Oh, and FYI, MySQL's "clustering" doesn't work either. It requires your
> entire database to fit into available RAM ....
> --
> Josh Berkus
> Aglio Database Solutions
> San Francisco

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