| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Gregory Stark <stark(at)enterprisedb(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers list <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: There's random access and then there's random access |
| Date: | 2007-12-12 07:06:39 |
| Message-ID: | 200712120706.lBC76d929538@momjian.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Gregory Stark wrote:
> I could swear this has been discussed in the past too. I seem to recall Luke
> disparaging Postgres on the same basis but proposing an immensely complicated
> solution. posix_fadvise or using libaio in a simplistic fashion as a kind of
> fadvise would be fairly lightweight way to get most of the benefit of the more
> complex solutions.
It has been on the TODO list for a long time:
* Do async I/O for faster random read-ahead of data
Async I/O allows multiple I/O requests to be sent to the disk with
results coming back asynchronously.
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php
I have added your thread URL to this.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
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