| From: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
|---|---|
| To: | Yury Zhuravlev <u(dot)zhuravlev(at)postgrespro(dot)ru>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Test CMake build |
| Date: | 2016-02-12 12:15:37 |
| Message-ID: | 56BDCCE9.8010507@sigaev.ru |
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| Lists: | pgsql-general |
Teodor Sigaev wrote:
> I tried it on FreeBSD 64-bit, 16Gb, SSD, Core i7
>
> ( ./configure && gmake all; ) 168,99s user 15,46s system 97% cpu 3:09,61 total
> ( cmake . && gmake all; ) 75,11s user 11,34s system 100% cpu 1:26,30 total
( CFLAGS='-O2' cmake . && gmake all; ) 141,87s user 12,18s system 97% cpu
2:37,40 total
Oops, cmake default target is compiled with -O0. With -O2 cmake is still faster
but not so much.
>
> Cmake 2 times faster, that is good, but I don't understand why. Which
> optimization level does cmake buld use by default? Which compiler does it take?
> It's not obvious, because cmake build hides actual compiler command line.
>
> Yury, pls, return back check target...
--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/
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