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Re: parallel pg_restore - WIP patch

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
Cc: Russell Smith <mr-russ(at)pws(dot)com(dot)au>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Jeffrey Baker <jwbaker(at)gmail(dot)com>
Subject: Re: parallel pg_restore - WIP patch
Date: 2008-09-26 21:10:44
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Lists: pgsql-hackers

Stefan Kaltenbrunner wrote:
> Andrew Dunstan wrote:
>> This version of the patch should fix the "shared file descriptor" bug 
>> Russell Smith noticed. It also disables the 1/2 second sleep between 
>> forks, so the performance on a small db (regression) is vastly improved.
> this works better but there is something fishy still - using the same 
> dump file I get a proper restore using pg_restore normally. If I 
> however use -m for a parallel one I only get parts (in this case only 
> 243 of the 709 tables) of the database restored ...

Yes, there are several funny things going on, including some stuff with 
dependencies. I'll have a new patch tomorrow with luck. Thanks for testing.



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