From: Craig Ringer <craig@2ndQuadrant.com>
To: Sergio Mayoral <mayoralstuttgart@yahoo.com>
Cc: postgresql-perf <pgsql-performance@postgresql.org>
Subject: Re: PQconnectStart/PQconnectPoll
Date: Thu, 22 Nov 2012 18:34:56 +0800
Message-ID: <50ADFFD0.7070503@2ndQuadrant.com> (raw)
In-Reply-To: <1352970177.10135.YahooMailNeo@web39302.mail.mud.yahoo.com>
References: <1352970177.10135.YahooMailNeo@web39302.mail.mud.yahoo.com>
On 11/15/2012 05:02 PM, Sergio Mayoral wrote:
>
> PQconnectdb is taking too long comparing to mysql and i found out the
> time is consumed by PQconnectPoll waiting for the socket to be ready
> for reading/writing
What's "too long"?
>
> I cannot use persistent connections. I must open/close a connection
> anytime I want to insert something new.
If you mean that you intend to open a new connection, do a single
INSERT, and close the connection - your performance will be awful.
If your app can't use persistent or pooled connections, use PgBouncer as
an external connection pool. Have your app connect to PgBouncer, and
PgBouncer connect to PostgreSQL.
--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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To: pgsql-performance@postgresql.org
Cc: craig@2ndQuadrant.com, mayoralstuttgart@yahoo.com
Subject: Re: PQconnectStart/PQconnectPoll
In-Reply-To: <50ADFFD0.7070503@2ndQuadrant.com>
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