Re: postgresql and openmosix migration
От | Bill |
---|---|
Тема | Re: postgresql and openmosix migration |
Дата | |
Msg-id | 008201c4587e$b8856510$dfc58780@billnotebook обсуждение исходный текст |
Ответ на | postgresql and openmosix migration ("Bill" <bill@math.uchicago.edu>) |
Ответы |
Re: postgresql and openmosix migration
(Bruno Wolff III <bruno@wolff.to>)
Re: postgresql and openmosix migration (Richard Welty <rwelty@averillpark.net>) Re: postgresql and openmosix migration ("Matthew Nuzum" <matt@followers.net>) Re: postgresql and openmosix migration (Joe Conway <mail@joeconway.com>) Re: postgresql and openmosix migration (Andrew Hammond <ahammond@ca.afilias.info>) Re: postgresql and openmosix migration (Josh Berkus <josh@agliodbs.com>) |
Список | pgsql-performance |
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 postgresql? Thanks. ----- Original Message ----- From: "Josh Berkus" <josh@agliodbs.com> To: "Bill" <bill@math.uchicago.edu>; <pgsql-performance@postgresql.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 OSS > 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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