Обсуждение: Speed or Performance

We have a VB/ADO application, which talks
via PostgreSQL/ODBC to our Linux Server.

(RedHat 7.2, PostgreSQL 7.1, PostgreSQL ODBC 7.1.9)

I have found PostgreSQL to be great for enquiry
on our ~350Mb database. Read speed is very good.

We have Primary key and some secondary indexes.

However, I have a speed issue with writing back.

Are there any speed tweaks regarding buffering
or configuration that I should check?

Does PostgreSQL rewrite indexes every write?


--
Keith Gray

Technical Development Manager
Heart Consulting Services P/L
mailto:keith@heart.com.au

Keith Gray wrote:
>
> We have a VB/ADO application, which talks
> via PostgreSQL/ODBC to our Linux Server.
>
> (RedHat 7.2, PostgreSQL 7.1, PostgreSQL ODBC 7.1.9)
>
> I have found PostgreSQL to be great for enquiry
> on our ~350Mb database. Read speed is very good.
>
> We have Primary key and some secondary indexes.
>
> However, I have a speed issue with writing back.

How are you writing back for example ?

> Are there any speed tweaks regarding buffering
> or configuration that I should check?
>
> Does PostgreSQL rewrite indexes every write?

Yes though slightly different. PostgreSQL writes indexes
every write.

regards,
Hiroshi Inoue
    http://w2422.nsk.ne.jp/~inoue/