But in the documentation, it says that there can be 2*checkpoint_segments +
1 xlog files at a time. Since I have configured the only 1
checkpoint_segments....there should be a maximum of only 3 xlog files taking
only 48 MB, not 4 taking 65MB.
[mailto:pgsql-novice-owner(at)postgresql(dot)org] On Behalf Of Frank Bax
Sent: Thursday, April 21, 2005 6:26 PM
Subject: Re: [NOVICE] Disk full problem
At 03:06 AM 4/20/05, Prashant wrote:
>I am a new addition to this mailing list. I am using Postgresql 7.4.3.
>I went through the postgresql documentation for saving the disk usage.
>Accordingly i changed the checkpoint_segments parameter to 1 in the
>postgresql.conf file. I cross checked by giving the SHOW ALL command.
>It shows 1 for the checkpoint_segments parameter. But when I chk the
>disk usage, the pg_xlog folder is taking up 65MB. There are 4 files
>under pg_xlog folder. According to the documentation, it should be
>taking only 16MB.
Not quite. the docs say 16M per file. 4 files * 16M = 64M
>And one more thing I noticed was that the base folder under pgsql/data
>folder is taking up 25MB space.
>How do I reduce the space taken up by these folders. I am running the
>vaccumdb command at regular intervals.
pgsql/data contains one folder for each database you created. To further
reduce space here, you'll need to drop tables and/or databases.
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