Buffer miss ratio

Started by 崔岩ccuiyyan@sina.comabout 17 years ago2 messages
#1崔岩ccuiyyan@sina.com
ccuiyyan@gmail.com

Dear all:

A quick question about shared buffers in PostgreSQL:

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?

Best Wishes

yyan

#2Heikki Linnakangas
heikki.linnakangas@enterprisedb.com
In reply to: 崔岩ccuiyyan@sina.com (#1)
Re: Buffer miss ratio

崔岩ccuiyyan@sina.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