adding size class for 24 bytes pool on x86

[Jason Evans]

On Dec 24, 2014, at 1:35 AM, Oran Agra <oran at redislabs.com> wrote:
> I have an application running on x86 that uses jemalloc which can greatly benefit from an allocation pool of 24 bytes.
> currently there are pools for 8,16,32...

The dev version of jemalloc has the --with-lg-quantum configure option, which should do what you want if you specify --with-lg-quantum=3 .  See the INSTALL file for details and warnings:

	https://github.com/jemalloc/jemalloc/blob/dev/INSTALL <https://github.com/jemalloc/jemalloc/blob/dev/INSTALL>

Jason

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