Re: pgsql-performance issue

On 2016-08-20 08:21, pgsql-performance-owner@postgresql.org wrote:

Welcome to the pgsql-performance mailing list!
Your password at PostgreSQL Mailing Lists is

x8DiA6

To leave this mailing list, send the following command in the body
of a message to majordomo@postgresql.org:

approve x8DiA6 unsubscribe pgsql-performance
debasis.moharana@ipathsolutions.co.in

This command will work even if your address changes.  For that reason,
among others, it is important that you keep a copy of this message.

To post a message to the mailing list, send it to
  pgsql-performance@postgresql.org

If you need help or have questions about the mailing list, please
contact the people who manage the list by sending a message to
  pgsql-performance-owner@postgresql.org

You can manage your subscription by visiting the following WWW location:

<https://lists.postgresql.org/mj/mj_wwwusr/domain=postgresql.org/debasis.moharana%40ipathsolutions.co.in>

Dear Sir/Mam,

I have a PostgreSQL 9.5 instance running on Windows 8 machine with 4GB of RAM.This server is mainly used for inserting/updating large amounts of data via copy/insert/update commands, and seldom for running select queries.

Here are the relevant configuration parameters I changed:

max_connections = 100
shared_buffers = 512MB
effective_cache_size = 3GB
work_mem = 12233kB
maintenance_work_mem = 256MB
min_wal_size = 1GB max_wal_size = 2GB
checkpoint_completion_target = 0.7
wal_buffers = 16MB
default_statistics_target = 100

After setting in postgresql.conf. I run the select query to fetch large amount of record of 29000 in postgresql but it takes 10.3 seconds but the same query takes 2 seconds for execution in MSSQL.

So my query is how to improve the perfermance in postgresql.

Regards,
Debasis Moharana
.NET Software Developer


--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance