Re: Performance comparison between Postgres and Greenplum

Hi Scott,

This is what I have got -

In Greenplum, the following query returns:

test_db1=# select version();
version
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 8.2.13 (Greenplum Database 3.3.0.1 build 4) on
i686-pc-linux-gnu, compiled by GCC gcc (GCC) 4.1.2 20080704 (Red Hat
4.1.2-44) compiled on Jun 4 2009 16:30:49
(1 row)

In Postgres, the same query returns:

postgres=# select version();
version
-----------------------------------------------------
PostgreSQL 8.3.7, compiled by Visual C++ build 1400
(1 row)

Regards,

Suvankar Roy
Tata Consultancy Services
Ph:- +91 33 66367352
Cell:- +91 9434666898

Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
07/15/2009 09:10 AM

To
Suvankar Roy <suvankar(dot)roy(at)tcs(dot)com>
cc
pgsql-performance(at)postgresql(dot)org
Subject
Re: [PERFORM] Performance comparison between Postgres and Greenplum

On Mon, Jul 13, 2009 at 5:23 AM, Suvankar Roy<suvankar(dot)roy(at)tcs(dot)com> wrote:
>
> Hi,
>
> I have some 99,000 records in a table (OBSERVATION_ALL) in a Postgres DB
as
> well as a Greenplum DB.
>
> The Primary key is a composite one comprising of 2 columns (so_no,
> serial_no).
>
> The execution of the following query takes 8214.016 ms in Greenplum but
only
> 729.134 ms in Postgres.
> select * from observation_all order by so_no, serial_no;
>
> I believe that execution time in greenplum should be less compared to
> postgres. Can anybody throw some light, it would be of great help.

What versions are you comparing?

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