It is default value ( #checkpoint_segments = 3    # in logfile segments, min
1, 16MB each )
Many of my database configurations are default values. (plain TOAST  etc)
my database is a log database so, some tables of db grow everytime. 
My ' /base ' directory contains a lot of compressed object (1GB size) 
These are maybe normal operations but I don't understand that 
although I delete many rows from my db and regularly vacuum , reindexing
operations,
how doesn't postgresql give back that deleted areas for reusing. 





Thom Brown wrote:
> 
> On 26 May 2010 15:16, paladine <yasinma...@gmail.com> wrote:
>>
>> Hi all,
>>
>> How can I reduce disk space postgresql used ?
>> I tried to delete many rows from my database and
>> I am running ' vacuum analyze reindexdb ' commands regularly
>> but my disk space on my linux machine didn't reduce.
>>
>> I know that ' vacuum full ' command can do that but I don't want to use
>> that command because of the disadvantages.
>>
>> Anyone know another method ?
>>
>> Thanks in advance.
>> --
>> View this message in context:
>> http://old.nabble.com/reducing-postgresql-disk-space-tp28681415p28681415.html
>> Sent from the PostgreSQL - general mailing list archive at Nabble.com.
>>
> 
> What have you got checkpoint_segments set to in your postgresql.conf
> file?  And how big is your database cluster?
> 
> Thom
> 
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