Christopher Browne cbbrowne at ca.afilias.info
Mon May 26 07:46:51 PDT 2008
"Tory M Blue" <tmblue at gmail.com> writes:
> Good morning,
>
> I have a question re some slon output that I'm seeing.
>
> I'm wondering if my configuration needs tweaking if I'm seeing these
> kind of numbers during/after an autovac
>
> DETAIL:  A total of 227168 page slots are in use (including overhead).
> 227168 page slots are required to track all free space.
> Current limits are:  1087500 page slots, 430 relations, using 6401 kB.
> VACUUM
>
> Does the higher than needed page slots affect anything, performance,
> resources etc? Is it something I should tune for or, no?

This isn't terribly Slony-I-related, but that's fine...

Having more page slots than needed does cost you some memory; 6 bytes
per page.  If that space isn't in use, it wastes you 6 bytes per
unused page.

Sounds like you're wasting ~5MB of memory, which doesn't sound too
serious.
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