I have experimented with this too, but never got around to introducing
the option because our internal devkits were built without gold support.
I have been meaning to include gold support in the next compiler upgrade
(in JDK 10) and at that point, either suggest gold by default or at
least introduce the option. We could certainly add a configure parameter
before that though.
/Erik
On 2017-03-26 14:43, Claes Redestad wrote:
+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
