Re: How much ram is too much

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Hi Andrew
On 11-Jun-07, at 11:34 AM, Andrew Sullivan wrote:

On Mon, Jun 11, 2007 at 11:09:42AM -0400, Dave Cramer wrote:
and set them to anything remotely close to 128GB.

Well, we'd give 25% of it to postgres, and the rest to the OS.

Are you quite sure that PostgreSQL's management of the buffers is
efficient with such a large one?

No, I'm not sure of this.
In the past, that wasn't the case
for relatively small buffers; with the replacement of single-pass
LRU, that has certainly changed, but I'd be surprised if anyone
tested a buffer as large as 32G.

So does anyone have experience above 32G ?

Dave

A

-- Andrew Sullivan  | ajs@xxxxxxxxxxxxxxx
The whole tendency of modern prose is away from concreteness.
		--George Orwell

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