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
   EnterpriseDB   http://www.enterprisedb.com

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• Buffer miss ratio at 2009-01-01 09:00:45 from 崔岩ccuiyyan

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