Re: [PERFORM] work_mem in high transaction rate database

2009-03-03 Thread Akos Gabriel
Tue, 3 Mar 2009 18:37:42 -0700 -n Scott Marlowe írta: > Oh my lord, that is a foot gun waiting to go off. Assuming 2k > connections, and somehow a fair number of them went active with big I absolutely agree with Scott. Plus set effective_cache_size accordingly, this would help the planner. You

Re: [PERFORM] Abnormal performance difference between Postgres and MySQL

2009-02-26 Thread Akos Gabriel
Thu, 26 Feb 2009 09:00:07 +0100 -n Claus Guttesen írta: > > The execution time has not improved. I am going to increase the > > shared_buffers now keeping the work_mem same. > > Have you performed a vacuum analyze? > and reindex -- Üdvözlettel, Gábriel Ákos -=E-Mail :akos.gabr...@i-logic.hu|

Re: [PERFORM] Abnormal performance difference between Postgres and MySQL

2009-02-25 Thread Akos Gabriel
Wed, 25 Feb 2009 15:43:49 -0600 -n Farhan Husain írta: OK, you have two options: 1. Learn to read carefully, and differentiate between work_mem and shared_buffers options. Lower work_mem and rise shared_buffers as others wrote. 2. Leave Postgresql alone and go for Oracle or Microsoft SQL... Rgd

[PERFORM] Query running long - cost estimation question...

2009-01-19 Thread Akos Gabriel
(now that my test went through, here is the question :) ) Dear Community, We are using PostgreSQL proudly for quite a long time, but now we are facing an interesting problem. Query plan seems to depend on how long the IN() clause is. explain analyze select p.product_id from product p left join

[PERFORM] test

2009-01-19 Thread Akos Gabriel
sorry, I just wonder why I can't get my message delivered... -- Üdvözlettel, Gábriel Ákos -=E-Mail :akos.gabr...@i-logic.hu|Web: http://www.i-logic.hu=- -=Tel/fax:+3612391618|Mobil:+36209278894 =- -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)