On 02/06/2015 10:46 PM, Bob Friesenhahn wrote:
On Fri, 6 Feb 2015, Robert Yang wrote:
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.
It seems like this issue is already corrected in the source tree but you are
Yes, I think that the git repo has fixed the problem:
commit 408cfb9c5fa8a666917167ffb806cb19deded429
Author: Gary V. Vaughan <g...@gnu.org>
Date: Fri Feb 6 12:58:34 2015 +0000
libtool: don't execute automake and autoconf on every invocation.
// Robert
correct that the issue is much more apparent with -j1.
Optimized:
2.4.2 : 3:43.43
2.4.5 : 4:33.11
Non-Optimized:
2.4.2 : 1:21.21
2.4.5 : 2:05.48
We need a test case which is executed before every major release to make sure
that a performance regression has not been introduced.
Bob
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