gold for linking

[Claes Redestad]

+1, at least to make it an optional setting.

Making it heavily multi-threaded by default may be a pessimization when
we're doing full image builds, cf. how many of the java tools in the
build is using serial GC and fewer compiler threads to play nice under
heavy parallelism.

Have you done any assessment on whether this has any effect on static
footprint and performance on the resulting images?

/Claes

On 2017-03-26 12:30, Ioi Lam wrote:
> I just tried adding -fuse-ld=gold to the g++ linker flags, and my
> libjvm.so link time shrinks from 18 seconds to 6 seconds. And that's
> with single threaded linking. If I add "-Wl,--threads
> -Wl,--thread-count,8" it becomes 4 seconds. It doesn't seem to scale
> after 8 threads.
>
> Any plans for adding official (perhaps optional) support for gold in the
> JDK build system?
>
> Thanks
> - Ioi