status of WITH_SHARED_TOOLCHAIN

[David Chisnall]

On 25 Dec 2016, at 19:21, Nikolai Lifanov <lifanov at FreeBSD.org> wrote:
> 
> Hi list,
> 
> I would like to understand why WITH_SHARED_TOOLCHAIN is not the default.
> My Raspberry Pi 3 is self-hosting with -j4 and doesn't run out of memory
> if the toolchain is shared. Is there a downside to this option?

Yes, there is a noticeable performance hit.  Buildworld takes 20-50% longer with a shared toolchain.  I don’t know if anyone has done any profiling of rtld to see if there’s any space for optimisation there (I suspect very little).

David

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