Re: Postgres insert performance and storage requirement compared to Oracle

> My questions/scenarios are:
>
> 1. How does PostgreSQL perform when inserting data into an indexed
> (type: btree)
> table? Is it true that as you add the indexes on a table, the
> performance
> deteriorates significantly whereas Oracle does not show that much
> performance
> decrease. I have tried almost all postgreSQL performance tips
> available. I want
> to have very good "insert" performance (with indexes), "select"
> performance is
> not that important at this point of time.

-- Did you test?

Yes. the performance was comparable when using SQL procedure. However, When I
used libpq, PostgreSQL performed very bad. There was some difference in
environment also between these 2 tests, but I am assuming libpq vs SQL was the
real cause. Or it was something else?

>
> 2. What are the average storage requirements of postgres compared to
> Oracle? I
> inserted upto 1 million records. The storage requirement of postgreSQL
> is almost
> double than that of Oracle.

-- What was your table structure?

Some 10-12 columns ( like 2 timestamp, 4 int and 4 varchar), with 5 indexes on
varchar and int fields including 1 implicit index coz of PK.

Joshua D. Drake

--
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