Re: Parallel pg_dump for 9.1 - Mailing list pgsql-hackers

From Pierre C
Subject Re: Parallel pg_dump for 9.1
Date
Msg-id op.vadp4vw1eorkce@immo.peufeu.com
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In response to Re: Parallel pg_dump for 9.1  (Peter Eisentraut <peter_e@gmx.net>)
List pgsql-hackers
On Tue, 30 Mar 2010 13:01:54 +0200, Peter Eisentraut <peter_e@gmx.net>  
wrote:

> On tis, 2010-03-30 at 08:39 +0200, Stefan Kaltenbrunner wrote:
>> on fast systems pg_dump is completely CPU bottlenecked
>
> Might be useful to profile why that is.  I don't think pg_dump has
> historically been developed with CPU efficiency in mind.

Already done that (I had posted some WIP patches to speed up COPY,  
hopefully I'll have time to finish those one day ;)
Most of the time spent in the postmaster process during "COPY TO" is in  
the datum -> string functions.




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