[RFC PATCH 07/11] malloc: make arena size configurable on startup

[Isaku Yamahata]

Thanks for feedback.


On Wed, Sep 11, 2019 at 09:03:59PM -0400,
DJ Delorie <dj@redhat.com> wrote:

> 
> I have no fundamental problem with tuning the heap size, but...
> 
> 1. The heap size must always be a power of two; you need to enforce that
>    in the tunable callback.

sure.


> 2. Do you have any benchmarks that show that these changes don't affect
>    performance?  I don't mean differing size heaps, I mean changing a
>    constant to a variable in the code.

So far not yet. let me try bench-malloc-simple.c  bench-malloc-thread.c


> 3. I don't see the point of heap_max_specified.

ok. Let me fix it with the next spin.

-- 
Isaku Yamahata <isaku.yamahata@gmail.com>