DragonFly BSD
DragonFly submit List (threaded) for 2006-02
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Re: malloc changes

From: David Rhodus <drhodus@xxxxxxxxxxx>
Date: Fri, 3 Feb 2006 21:42:25 -0500

On 2/3/06, Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx> wrote:
> :
> :FYI,
> :
> :FreeBSD just imported a new malloc to replace the aged
> :phkmalloc.
> :
> :There was much back and forth with the author and David Xu
> :so he might have an opinion as to whether the changes in the
> :FreeBSD malloc are worth looking into.
> :
> :The new malloc is not derived from the phkmalloc so likely
> :these changes would not apply.  Many of the features are
> :similar, except the new jemalloc was engineered with true
> :concurrent threaded applications in mind.
>    I've been following that thread in the FreeBSD groups.
>    We will definitely *NOT* going to be importing FreeBSD's
>    new malloc.
>    My feeling is that if a threaded program allocates so much
>    data that a fast MP-safe malloc is required, then we should
>    simply port the slab allocator from the DragonFly kernel to
>    userland and use that.
>    For now its not on the table.  The current proposed malloc
>    changes for DragonFly IS on the table and I do want to see
>    it committed, but I'd appreciate it if some GUI users could
>    test it out with e.g. mozilla, X, and so forth, first.
>                                         -Matt

I haven't been able to get a pkgsrc bulk build to complete using the
malloc patch.


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