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Re: performance of PostgreSQL on 64 bit MAC OS X G5!

From: Christopher Browne <cbbrowne(at)acm(dot)org>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: performance of PostgreSQL on 64 bit MAC OS X G5!
Date: 2004-09-26 23:31:21
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
Oops! qzhao(at)supplyfx(dot)com (Qing Zhao) was seen spray-painting on a wall:
> Is it because PostgreSQL 7.3.4 can't take advantage of the 64 bit
> hardware or is it something else?

PostgreSQL has been able to take advantage of 64 bit hardware WHEN THE
OS SUPPORTS IT, for quite a few versions now.

As far as I was aware, Mac OS-X was still deployed as a 32 bit
operating system.  Apple's advertising material seems deliberately
ambiguous in this regard; it seems to imply there is no difference
between 32- and 64-bit applications.  To wit:

  "... This means that 32-bit applications that run on Mac OS X today
  will run natively on 64-bit PowerPC G5 Processor-based Macintosh
  computers, without the need for recompiling or additional

There are quite likely to be some additional "compiler incantations"
required in order to compile applications as 64 bit apps that will be
able to reference, internally, more than 4GB of RAM.
wm(X,Y):-write(X),write('@'),write(Y). wm('cbbrowne','').
Tell a man that there are 400 billion stars, and he'll believe you.
Tell him a bench has wet paint, and he has to touch it. 

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