From: Tom Lane <tgl@sss.pgh.pa.us>
To: Greg Smith <greg@2ndquadrant.com>
Cc: Matthew Wakeling <matthew@flymine.org>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Eliot Gable <egable+pgsql-performance@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: B-Heaps
Date: Fri, 18 Jun 2010 15:41:05 -0400
Message-ID: <17236.1276890065@sss.pgh.pa.us> (raw)
In-Reply-To: <4C1BB294.8070806@2ndquadrant.com>
References: <AANLkTinsmWw4w2m2fyjord30seNfn7Ww1arKew5EttQG@mail.gmail.com>
<alpine.DEB.2.00.1006151313370.4083@aragorn.flymine.org>
<AANLkTik-81bRcl1tle10YvsdY1F6MwF4SFZErKOZa5LA@mail.gmail.com>
<alpine.DEB.2.00.1006181722050.2534@aragorn.flymine.org>
<4C1BB294.8070806@2ndquadrant.com>
Greg Smith <greg@2ndquadrant.com> writes:
> Your characterization of the potential speed up here is "Using a proper tree
> inside the index page would improve the CPU usage of the index lookups",
> which seems quite reasonable. Regardless, when I consider "is that
> something I have any reason to suspect is a bottleneck on common
> workloads?", I don't think of any, and return to working on one of
> things I already know is instead.
Note also that this doesn't do a thing for b-tree indexes, which already
have an intelligent within-page structure. So that instantly makes it
not a mainstream issue. Perhaps somebody will be motivated to work on
it, but most of us are chasing other things.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, greg@2ndquadrant.com, matthew@flymine.org, robertmhaas@gmail.com, egable+pgsql-performance@gmail.com
Subject: Re: B-Heaps
In-Reply-To: <17236.1276890065@sss.pgh.pa.us>
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