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Re: Buffer miss ratio

From: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
To: "崔岩ccuiyyan(at)sina(dot)com" <ccuiyyan(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Buffer miss ratio
Date: 2009-01-01 09:08:28
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Lists: pgsql-hackers
崔岩ccuiyyan(at)sina(dot)com wrote:
>      I want to get the number of misses for the buffer pool of PostgreSQL.
> Is there any methods or
>      performance tools I can use to get the information?

Yes. Please see the manual chapters on "Monitoring database activity". 
The pgstatio_* views in particular.

PS. This mailing list is for discussion on development of PostgreSQL. 
Questions on usage belong to pgsql-general, or one of the other user 
mailing lists.

   Heikki Linnakangas

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