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