Re: Memory storage growth

[Dair G. <da...@re...>]

James W. Walker wrote:

>Memory storage objects grow linearly, but it is well known that you
>get better performance if you grow buffers exponentially (e.g., double
>the size each time you need to grow.)

Although that does mean you potentially end up paging more as your
buffers are growing, well, exponentially. :-)


>Shall I make exponential growth an option, or just change the=20
>standard behavior?  I can't think of any reason that existing=20
>software would be hurt by the change.

I've used x1.5in the past quite successfully: buffers grow quickly if
they're being appended to, but you don't have such big jumps like
128->256Mb, 256Mb->512Mb, etc.

I thought we were actually using 1.5 already, but it appears not.

I can't see it breaking anything either though, so go ahead: worst case
is that we find another case where the memory balloons a bit, in which
case we can add something like a usage hint to give some idea of what
the storage object will be used for.


-dair
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