On 02/06/2015 12:12 PM, Bob Friesenhahn wrote:
I am not seeing quite the difference between libtool releases that you are although I see a big slowdown starting with 2.4.3. These timings are for optimized builds of GraphicsMagick on a 12-core GNU/Linux system using -j 12:
I think that we can't see obviously slowdown by "make -jN", but "make -j1" will. And bash is much slower than dash, I'm trying to figure out why.
2.4.2 : 23.613 2.4.3 : 31.697 2.4.4 : 28.236 2.4.5 : 28.514 And here are timings for a non-optimize (-O0) compile with no debug symbols: 2.4.2 : 8.629 2.4.3 : 13.216 2.4.4 : 13.012 2.4.5 : 13.281 I see similar slowdowns on an Illumos-based system, so it is not specific to GNU/Linux.
I'm using Ubuntu 12.04.3, we have added a few patches to libtool for cross building, but it seems these patches won't impact the speed so much since it works well when 2.4.2 (the same patches). // Robert
It is curious that there is more impact for the optimized builds. Bob
_______________________________________________ https://lists.gnu.org/mailman/listinfo/libtool
