Re: posix advises ... - Mailing list pgsql-hackers

From Abhijit Menon-Sen
Subject Re: posix advises ...
Date
Msg-id 20080712113432.GA26415@toroid.org
Whole thread Raw
In response to Re: posix advises ...  (Gregory Stark <stark@enterprisedb.com>)
Responses Re: posix advises ...  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: posix advises ...  (Greg Smith <gsmith@gregsmith.com>)
List pgsql-hackers
At 2008-07-12 00:52:42 +0100, stark@enterprisedb.com wrote:
>
> There was some discussion about this change and in fact if you
> look at CVS HEAD you'll find it already applied.

Not as far as I can see.

> Incrementing the most significant index keys would maximize the
> distance we're jumpin around in the index tree.

I see. Thanks.

> The later versions of mine had a GUC named effective_spindle_count
> which I think is nicely abstracted away from the implementation
> details.

Yes, that does sound much better. (The patch I read had a
preread_pages_bitmapscan variable instead.)

-- ams


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