Re: [PATCHES] 8.2 features? - Mailing list pgsql-hackers

From Tom Lane
Subject Re: [PATCHES] 8.2 features?
Date
Msg-id 23198.1153367887@sss.pgh.pa.us
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In response to Re: [PATCHES] 8.2 features?  (Joe Conway <mail@joeconway.com>)
Responses Re: [PATCHES] 8.2 features?  (Joe Conway <mail@joeconway.com>)
List pgsql-hackers
Joe Conway <mail@joeconway.com> writes:
> I did some testing today against mysql and found that it will easily 
> absorb insert statements with 1 million targetlists provided you set 
> max_allowed_packet high enough for the server. It peaked out at about 
> 600MB, compared to my test similar last night where it was using about 
> 3.8 GB when I killed it.

> So the question is, do we care?

What's the performance like relative to mysql?  It seems hard to believe
that we can afford the overhead of a separate INSERT statement per row
(duplicating all the work of parse analysis, rewrite, planning, executor
start/stop) ... at least not without looking mighty bad.
        regards, tom lane


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