| From: | Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net> |
|---|---|
| To: | pgsql general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Practical maximums (was Re: PostgreSQL theoretical |
| Date: | 2006-08-07 21:53:47 |
| Message-ID: | 44D7B66B.6090505@cox.net |
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| Lists: | pgsql-general |
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Alvaro Herrera wrote:
> Ron Johnson wrote:
>
>> This is where a multi-threaded pg_tapedump would be more effective,
>> since it would be able to, for example, have 4 threads reading
>> (different parts of) the database and writing to 4 separate tape drives.
>
> It will be difficult to have a consistent dump though. You can't do
> that with separate transactions. (And you can't have multiple
> simultaneous readers without separate transactions.)
Absolutely, you're right. All "threads" must run from within the
same read-only transaction.
- --
Ron Johnson, Jr.
Jefferson LA USA
Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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