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Re: 64 Bit Compatibility

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Christopher Browne <cbbrowne(at)libertyrms(dot)info>
Cc: Jeff <jam(at)zoidtechnologies(dot)com>,Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>,pgsql-advocacy(at)postgresql(dot)org
Subject: Re: 64 Bit Compatibility
Date: 2003-07-23 22:53:56
Message-ID: 200307232253.h6NMru829921@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-advocacy
Christopher Browne wrote:
> Then let's ask ourselves: "What use is 64 bit compatibility?"
> 
> Answer:
> 
> "... 64 bit support means database processes can access more than 2GB of 
> physical memory, which is vital for supporting large enterprise 
> databases and data warehousing applications."
> 
> The problem with "only 32 bits" is that you can't make use of >2GB of 
> RAM on a system.  (Well, on a 4GB IA-32 box, you could have PostgreSQL 
> consume up to 2GB, and then see filesystem cacheing use the rest, but 
> you still only have direct access to 2GB at a time...)

I belive 4gig is the limit for 32 bits.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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