Re: libpq vs ODBC

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On Thu, 09 Dec 2010 06:51:26 +0100, Alex Goncharov
<alex-goncharov@xxxxxxxxxxx> wrote:

,--- You/Divakar (Wed, 8 Dec 2010 21:17:22 -0800 (PST)) ----*
| So it means there will be visible impact if the nature of DB interaction is DB
| insert/select. We do that mostly in my app.

You can't say a "visible impact" unless you can measure it in your
specific application.

Let's say ODBC takes 10 times of .001 sec for libpq.  Is this a
"visible impact"?

Well you have to consider server and client resources separately. If you waste a bit of CPU time on the client by using a suboptimal driver, that may be a problem, or not. It you waste server resources, that is much more likely to be a problem, because it is multiplied by the number of clients. I don't know about the specifics of ODBC performance, but for instance php's PDO driver's handling of prepared statements with postgres comes up as an example of what not to do.

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