From: Josh Berkus <josh@agliodbs.com>
To: pgsql-performance@postgresql.org
Cc: Sven Clement <sven@dsign.lu>
Subject: Re: Performance problems with large telemetric datasets on 7.4.2
Date: Fri, 3 Aug 2007 10:56:23 -0700
Message-ID: <200708031056.23569.josh@agliodbs.com> (raw)
In-Reply-To: <881035ea0708030652r37b25a86g61e88e1f5e95eab2@mail.gmail.com>
References: <881035ea0708030652r37b25a86g61e88e1f5e95eab2@mail.gmail.com>
Sven,
> The hardware is a IBM X306m Server, 3.2 GHz HT (Pentium IV), 1 GB RAM
> and 2x 250 GB HDD (SATA-II) with ext3 fs, one of the HDD is dedicated to
> database. OS is Debian 3.1 Sarge with PostgreSQL 7.4.7 (7.4.7-6sarge1)
> with the libpq frontend library.
Note that 7.4.7 is not the current bugfix version of 7.4.x. It is 5 or 6
patches behind.
> So I'm asking me if it is useful to update to the actual 8.2 version and
> if we could experience performance improvement only by updating.
8.2 will give you a number of features which should greatly improve your
performance situation:
1) partitioning: break up your main data table into smaller
easier-to-maintain segments (this will require some application changes)
2) VACUUM delay, which lowers the impact of vacuum on concurrent queries
3) AUTOVACUUM, which helps keep your tables in reasonable maintenance.
--
--Josh
Josh Berkus
PostgreSQL @ Sun
San Francisco
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To: pgsql-performance@postgresql.org
Cc: josh@agliodbs.com, sven@dsign.lu
Subject: Re: Performance problems with large telemetric datasets on 7.4.2
In-Reply-To: <200708031056.23569.josh@agliodbs.com>
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