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Re: [HACKERS] pg_dump and thousands of schemas

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Tatsuo Ishii <ishii(at)postgresql(dot)org>, pgsql-performance(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [HACKERS] pg_dump and thousands of schemas
Date: 2012-08-30 21:45:24
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Lists: pgsql-hackerspgsql-performance
On Thu, Aug 30, 2012 at 4:51 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
>> On Thu, May 31, 2012 at 09:20:43AM +0900, Tatsuo Ishii wrote:
>>>> Ok, I modified the part of pg_dump where tremendous number of LOCK
>>>> TABLE are issued. I replace them with single LOCK TABLE with multiple
>>>> tables. With 100k tables LOCK statements took 13 minutes in total, now
>>>> it only takes 3 seconds. Comments?
>>> Shall I commit to master and all supported branches?
>> Was this applied?
> No, we fixed the server side instead.

But only for 9.2, right?  So people running back branches are still screwed.

Robert Haas
The Enterprise PostgreSQL Company

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