Re: Performance problem in aset.c

> At 23:48 11/07/00 -0400, Tom Lane wrote:
> >Another idea is to split the returned chunk and put the wasted part back
> >as a smaller free chunk, but I don't think this solves the problem; it
> >just means that the wasted space ends up on a small-chunk freelist, not
> >that you can actually do anything with it.  But maybe someone can figure
> >out a variant that works better.
> 
> Can you maintain one free list for each power of 2 (which it might already
> be doing by the look of it), and always allocate the max size for the list.
> Then when you want a 10k chunk, you get a 16k chunk, but you know from the
> request size which list to go to, and anything on the list will satisfy the
> requirement.

Sounds like the BSD malloc memory manager.  I can post details, or the
pages from a kernel book I have about it.

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