| From: | Abhijit Menon-Sen <ams(at)oryx(dot)com> |
|---|---|
| To: | Gregory Stark <stark(at)enterprisedb(dot)com> |
| Cc: | Zoltan Boszormenyi <zb(at)cybertec(dot)at>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: posix advises ... |
| Date: | 2008-07-12 11:34:32 |
| Message-ID: | 20080712113432.GA26415@toroid.org |
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| Lists: | pgsql-hackers pgsql-patches |
At 2008-07-12 00:52:42 +0100, stark(at)enterprisedb(dot)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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