Deleting Records - Mailing list pgsql-performance

Hi!

I'm experiencing a very slow deletion of records. Which I thin is not right.
I have a Dual Xeon Server with 6gig Memory.
I am only deleting about 22,000 records but it took me more than 1 hour to
finish this.

What could possibly I do so that I can make this fast?

Here is the code inside my function:

    FOR temp_rec IN SELECT * FROM item_qc_doer LOOP
        DELETE FROM qc_session WHERE item_id = temp_rec.item_id;
        DELETE FROM item_qc_doer WHERE item_id = temp_rec.item_id;
    END LOOP;

Item_qc_oder table contains 22,000 records.


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