Re: Re: patch: fix performance problems with repated decomprimation of varlena values in plpgsql

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Noah Misch <noah(at)leadboat(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Re: patch: fix performance problems with repated decomprimation of varlena values in plpgsql
Date: 2011-01-19 16:46:19
Message-ID: AANLkTinrMvssbipxPe4uV-PT1NmAOme0kZhfyod3eySn@mail.gmail.com
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On Tue, Jan 18, 2011 at 5:22 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
> opinion isn't strong in this topic. One or twenty useless detoasting
> isn't really significant in almost use cases (problem is thousands
> detoasting).

Yeah. Many-times-repeated detoasting is really bad, and this is not
the only place in the backend where we have this problem. :-(

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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