Re: Same query doing slow then quick

My bad. Did not see that part.
I tried to elevate buffer and SHMAX was a problem. I'll give it another try and will keep you posted.
Thank you.

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Date: Wed, 26 Sep 2012 07:17:56 -0700
From: ml-node+s1045698n5725506h46(at)n5(dot)nabble(dot)com
To: FFW_Rude(at)hotmail(dot)com
Subject: Re: Same query doing slow then quick

On 09/26/2012 16:14, FFW_Rude wrote:

> Thank for you answer.

>

> shared_buffer is at 24Mb

> effective_cache_size at 2048Mb

>

> What do you mean properly ? That's not really helping a novice...

>

from my previous mail:

before looking further, please configure shared_buffers and

effective_cache_size properly, it's fundamental

you'll probably need to raise SHMALL/SHMMAX, take a look at:

http://www.postgresql.org/docs/current/static/kernel-resources.html
for 4GB of RAM I would start with shared_buffers to 512MB and

effective_cache_size to 2GB

>

>

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