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Re: Patch: optimize kmem_alloc for frequent mid-sized allocations
On Tue, Feb 10, 2009 at 07:27:38PM +0900, enami tsugutomo wrote:
> Andrew Doran <ad%NetBSD.org@localhost> writes:
> > The below patch introduces an additional level of caching,
> > from the maximum size provided by the quantum cache up to PAGE_SIZE. It also
> > adds debug code to check that allocated size == freed size.
> > http://www.netbsd.org/~ad/cleanout/kmem.diff
> Your point is to keep memory in pool cache and not in pool itself,
> right? If so, we want to bypass pool layer to avoid page header
> allocation, don't we?
I think that's a great idea. It could be done without an ABI change if an
additional flag was introduced and the 'palloc' argument to pool_cache_init
was made a 'void *'.
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