Re: Simple join doesn't use index - Mailing list pgsql-performance

From Merlin Moncure
Subject Re: Simple join doesn't use index
Date
Msg-id CAHyXU0yi=VDbG+7buDYke5R+76nzszKXQX77S9NDoNWjbrg4Gg@mail.gmail.com
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In response to Re: Simple join doesn't use index  (Alex Vinnik <alvinnik.g@gmail.com>)
Responses Re: Simple join doesn't use index
List pgsql-performance
On Wed, Jan 9, 2013 at 9:49 AM, Alex Vinnik <alvinnik.g@gmail.com> wrote:
> Guys, thanks a lot for your input. It is very valuable for us. We plan to
> fix a separate dev server similar to production one, copy all data there and
> try you suggestions as we really don't want to do it on production server. I
> also noticed that IOPS jumps to 100% when running this query. So it is a bit
> scary to make those changes in production directly. Will report back on the
> progress and findings.

nothing wrong with that, but keep in mind you can tweak
'effective_cache_size' for a single session with 'set' command;

merlin


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