On Fri, Jan 25, 2019 at 10:07 AM Andrew Haley <a...@redhat.com> wrote: > > On 1/25/19 5:01 PM, Martin Buchholz wrote: > > I re-ran my linker performance experiment using configure > > --with-native-debug-symbols="internal" > > lld is a big winner here: > > It looks to me like lld and multi-threaded gold would be a near tie. I > think that lld uses multi-threading; I wonder why gold doesn't. But > either is so fast linking libjvm.so that I no longer care.
repeating my last experiment with explicit --threads: --- ld=gold --- /usr/bin/g++ -fuse-ld=$ld -Wl,--threads -Wl,--hash-style=both -Wl,-z,defs 9.18s user 4.98s system 329% cpu 4.292 total /usr/bin/g++ -fuse-ld=$ld -Wl,--threads -Wl,--hash-style=both -Wl,-z,defs 9.12s user 5.12s system 333% cpu 4.266 total --- ld=lld --- /usr/bin/g++ -fuse-ld=$ld -Wl,--threads -Wl,--hash-style=both -Wl,-z,defs 2.70s user 1.09s system 324% cpu 1.169 total /usr/bin/g++ -fuse-ld=$ld -Wl,--threads -Wl,--hash-style=both -Wl,-z,defs 2.74s user 1.00s system 328% cpu 1.141 total and with explicit --no-threads: --- ld=gold --- /usr/bin/g++ -fuse-ld=$ld -Wl,--no-threads -Wl,--hash-style=both -Wl,-z,defs 4.61s user 0.61s system 99% cpu 5.213 total /usr/bin/g++ -fuse-ld=$ld -Wl,--no-threads -Wl,--hash-style=both -Wl,-z,defs 4.60s user 0.61s system 99% cpu 5.212 total --- ld=lld --- /usr/bin/g++ -fuse-ld=$ld -Wl,--no-threads -Wl,--hash-style=both -Wl,-z,defs 1.67s user 0.60s system 99% cpu 2.289 total /usr/bin/g++ -fuse-ld=$ld -Wl,--no-threads -Wl,--hash-style=both -Wl,-z,defs 1.66s user 0.60s system 99% cpu 2.283 total
