On Sun, 2011-09-25 at 12:13 -0500, Neil Tiffin wrote: > On Sep 24, 2011, at 4:21 PM, Guillaume Lelarge wrote: > > > On Sat, 2011-09-24 at 14:43 -0500, Neil Tiffin wrote: > >> On Sep 24, 2011, at 1:31 PM, Joe Conway wrote: > >> > >>> On 09/23/2011 02:33 PM, Neil Tiffin wrote: > >>>> I have shared_buffers in the config file set for 32 MB and pgAdmin > >>>> reports a value of 32 MB, but pgAdmin also says the current value is > >>>> 4096. Can anyone point me to any docs about why the current value > >>>> may be different than the config value? Temp_buffers are the same > >>>> way, config file 8MB, but current value in pgAdmin is 1024? > >>> > >>> Internally shared_buffers is tracked as number of 8K pages. > >>> > >>> postgres=# show shared_buffers; > >>> shared_buffers > >>> ---------------- > >>> 32MB > >>> (1 row) > >>> > >>> postgres=# select setting from pg_settings where name='shared_buffers'; > >>> setting > >>> --------- > >>> 4096 > >>> (1 row) > >>> > >>> postgres=# select 4096 * 8 / 1024 as MB; > >>> mb > >>> ---- > >>> 32 > >>> (1 row) > >>> > >>> HTH, > >> > >> Excellent, just what I was looking for. I know there had to be a simple explanation, even though it seems a little retarded that pgAdmin does not point this out. > > > > And how do you get that value from pgAdmin? the config editor gives me > > the value with its unit, so I guess it's not from the config editor. > > > > I got the values from selecting in pgAdmin: Tools -> Server Configuration -> postgresql.conf, then I get a table with setting name, value, current value, and comment columns. The 'value' column shows the unit, but the 'current value' column does not, at least on Mac OS X. > Yes, I have the same behaviour. The "Value" comes from the file (hence with the unit), and the "Current Value" comes from PostgreSQL (simple query: select setting from pg_settings where name='shared_buffers'). -- Guillaume http://blog.guillaume.lelarge.info http://www.dalibo.com -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
