| From: | Gokulakannan Somasundaram <gokul007(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Jeff Davis <pgsql(at)j-davis(dot)com>, Greg Stark <stark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: An idle thought |
| Date: | 2010-03-18 08:59:23 |
| Message-ID: | 9362e74e1003180159h747df7d1j27cfb95acf8a6bba@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Mar 18, 2010 at 2:50 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Jeff Davis <pgsql(at)j-davis(dot)com> writes:
> > There are all kinds of challenges there, but it might be worth thinking
> > about. Visibility information is highly compressible, and requires
> > constant maintenance (updates, deletes, freezing, etc.). It also might
> > make it possible to move to 64-bit xids, if we wanted to.
>
> If you want it to be cheaply updatable (or even cheaply readable),
> compression is not what you're going to do.
>
> regards, tom lane
>
> +1..
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