| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)postgresql(dot)org> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql: Implement prefetching via posix_fadvise() for bitmap index scans. |
| Date: | 2009-02-06 17:13:21 |
| Message-ID: | 200902061713.n16HDLx29136@momjian.us |
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| Lists: | pgsql-committers pgsql-hackers |
Tom Lane wrote:
> Log Message:
> -----------
> Implement prefetching via posix_fadvise() for bitmap index scans. A new
> GUC variable effective_io_concurrency controls how many concurrent block
> prefetch requests will be issued.
>
> (The best way to handle this for plain index scans is still under debate,
> so that part is not applied yet --- tgl)
Where are we on completing this feature?
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
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