| From: | Markus Schaber <schabi(at)logix-tt(dot)com> |
|---|---|
| To: | PostgreSQL Performance List <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Read only transactions - Commit or Rollback |
| Date: | 2005-12-20 12:03:15 |
| Message-ID: | 43A7F303.8040804@logix-tt.com |
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| Lists: | pgsql-performance |
Hi, Marcus,
Nörder-Tuitje wrote:
> afaik, this should be completely neglectable.
>
> starting a transaction implies write access. if there is none, You do
> not need to think about transactions, because there are none.
Hmm, I always thought that the transaction will be opened at the first
statement, because there _could_ be a parallel writing transaction
started later.
> postgres needs to schedule the writing transactions with the reading
> ones, anyway.
As I said, there usually are no writing transactions on the same database.
Btw, there's another setting that might make a difference:
Having ACID-Level SERIALIZABLE or READ COMMITED?
Markus
--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf. | Software Development GIS
Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org
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