Re: How much ram is too much

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@crankycanuck.ca
> The whole tendency of modern prose is away from concreteness.
>         --George Orwell
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