Performance comparison between Postgres and Greenplum

Поиск
Список
Период
Сортировка

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.


Regards,

Suvankar Roy

=====-----=====-----=====
Notice: The information contained in this e-mail
message and/or attachments to it may contain 
confidential or privileged information. If you are 
not the intended recipient, any dissemination, use, 
review, distribution, printing or copying of the 
information contained in this e-mail message 
and/or attachments to it are strictly prohibited. If 
you have received this communication in error, 
please notify us by reply e-mail or telephone and 
immediately and permanently delete the message 
and any attachments. Thank you


В списке pgsql-performance по дате отправления:

Предыдущее
От: Alex
Дата:
Сообщение: Poor query performance
Следующее
От: Wayne Conrad
Дата:
Сообщение: Poor overall performance unless regular VACUUM FULL