Re: libpq usage in Samba

From: Doug McNaught <doug(at)mcnaught(dot)org>
To: Fernando Schapachnik <fernando(at)mecon(dot)gov(dot)ar>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: libpq usage in Samba
Date: 2005-03-30 15:01:54
Message-ID: 87u0mtp47x.fsf@asmodeus.mcnaught.org
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Fernando Schapachnik <fernando(at)mecon(dot)gov(dot)ar> writes:

> I'm trying to figure out why Samba is failing at high loads if using
> Postgres as a backend (7.3.9 in my setup). On startup in makes one
> connection only against the database which is shared among all the
> Samba processes. In turn, each issue a PQexec() over the same
> connection (a SELECT, actually). Is that a safe use? I would think
> it is not, but not really sure. I mean, does libpq multiplex queries
> and handle concurrency correctly in a such a scenario?

No, it doesn't. You need to figure out a way to have each Samba
process open its own connection.

-Doug

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