| From: | Rob Wultsch <wultsch(at)gmail(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: update on global temporary and unlogged tables |
| Date: | 2010-09-14 01:06:56 |
| Message-ID: | AANLkTinqvN_RQSuOHNxCwU5T2V9Fjjx1MFWfhQvoZiVF@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Sep 6, 2010 at 7:55 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> 3. With respect to unlogged tables, the major obstacle seems to be
> figuring out a way for these to get automatically truncated at startup
> time.
>
(please forgive what is probably a stupid question)
By truncate do mean reduce the table to a very small number (or zero) number
of pages? Is there a case to be made for instead somehow marking all pages
as available for reuse? Deallocating and reallocating space can be
expensive.
--
Rob Wultsch
wultsch(at)gmail(dot)com
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