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From: Andrew Dunstan <andrew@dunslane.net>
To: Joshua D. Drake <jd@commandprompt.com>
Cc: Simon Riggs <simon@2ndquadrant.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Stephen Frost <sfrost@snowman.net>
Cc: pgsql-patches@postgresql.org
Subject: Re: pg_dump additional options for performance
Date: Sun, 27 Jul 2008 19:42:24 -0400
Message-ID: <488D07E0.4020303@dunslane.net> (raw)
In-Reply-To: <488CA8ED.6080908@commandprompt.com>
References: <20080721115602.GG18846@tamriel.snowman.net>
	<1216831237.3894.676.camel@ebony.2ndQuadrant>
	<1216832987.3894.678.camel@ebony.2ndQuadrant>
	<20080724032047.GI18846@tamriel.snowman.net>
	<1216885031.3894.739.camel@ebony.2ndQuadrant>
	<21687.1216886041@sss.pgh.pa.us>
	<1216889809.3894.747.camel@ebony.2ndQuadrant>
	<2818.1217027784@sss.pgh.pa.us>
	<1217063104.3894.1100.camel@ebony.2ndQuadrant>
	<23540.1217089204@sss.pgh.pa.us>
	<20080726164355.GH16005@tamriel.snowman.net>
	<24327.1217094186@sss.pgh.pa.us>
	<1217095404.16378.184.camel@jd-laptop>
	<1217151454.3894.1225.camel@ebony.2ndQuadrant>
	<488CA8ED.6080908@commandprompt.com>



Joshua D. Drake wrote:
>
> Agreed but that is a problem I understand with a solution I don't. I 
> am all eyes on a way to fix that. One thought I had and please, be 
> gentle in response was some sort of async transaction capability. I 
> know that libpq has the ability to send async queries. Is it possible 
> to do this:
>
> send async(copy table to foo)
> send async(copy table to bar)
> send async(copy table to baz)
>
> Where all three copies are happening in the background?
>
>

IIRC, libpq doesn't let you have more than one async query active at one 
time.

cheers

andrew

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