Postgres Pro
Downloads
Home   >   mailing lists

free RAM not being used for page cache - Mailing list pgsql-general

From Kevin Goess
Subject free RAM not being used for page cache
Date
Msg-id CABZkbxjrJNmG303upmbFB8BR5VtDwqfc13ngdXL9k_-nzev6mQ@mail.gmail.com
Whole thread Raw
Responses Re: free RAM not being used for page cache  (Merlin Moncure <mmoncure@gmail.com>)
Re: free RAM not being used for page cache  (Shaun Thomas <sthomas@optionshouse.com>)
List pgsql-general
Tree view
A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB.  Immediately afterwards the new RAM was being used for page cache, which is what we want, but that seems to have dropped off over time, and there's currently actually like 12GB of totally unused RAM.

http://s76.photobucket.com/user/kgoesspb/media/db1-mem-historical.png.html

Is that expected?  Is there a setting we need to tune for that?  We have 400GB of databases on this box, so I know it's not all fitting in that 49.89GB.


pgsql-general by date:

Previous
From: Sergey Burladyan
Date:
Subject: How to detect txid visibility on standby server?
Next
From: Seref Arikan
Date:
Subject: How can I create null value from function call with no results?