On Wed, 2006-11-29 at 13:57, Joe Bloggs wrote:
> I created a table in 8.1.5 on Linux with three columns;
>
> date, bigint and integer.
>
> Then I populated the table with more than 2 million rows.
>
> I looked at the size of the file that contained the table and divided
> this by the number of rows which gave an average of just over 60 bytes
> per row.
>
> This seems to be quite a large overhead as I would guess that the date
> field takes around 4 bytes, the bigint 8 bytes and the integer 4
> bytes. I would have hoped to have had an average size of between 20
> and 30 bytes per row. Is this normal and is there any way of improving
> this as I'm hoping to use have around 80 million rows in a table
> without it taking up too much disk space and too much memory to cache
> it?
Had you done any updates to the tables? If so, had you run a vacuum
full?
