Re: pgsql: TODO item not needed anymore now that the buffer cache is

On Fri, 1 Jun 2007, Bruce Momjian wrote:

> Log Message:
> -----------
> TODO item not needed anymore now that the buffer cache is
> scan-resistant:
>
> <
> < * Allow free-behind capability for large sequential scans, perhaps using
> <   posix_fadvise()
> <
> <   Posix_fadvise() can control both sequential/random file caching and
> <   free-behind behavior, but it is unclear how the setting affects other
> <   backends that also have the file open, and the feature is not supported
> <   on all operating systems.
>

This todo item is about telling the OS cache that we don't want these 
buffers kept around, not about pg's own buffer cache.  So I think it's 
still valid.

Kris Jurka