如何让你的FreeBSD系统达到最优化？

哈蜜瓜

一个最重要的答案就是：运行针对你cpu型号编译的程序！
我们知道，FreeBSD中大部分软件都在ports下编译。如何设定编译时的参数呢？就是/etc/make.conf这个配置文件！
打开/etc/make.conf这个文件，找到这两行：

#CFLAGS= -O -pipe

#CXXFLAGS+= -fmemoize-lookups -fsave-memoized

怎么改？就改CFLAGS与CXXFLAGS参数！首先把前面的“#”号去掉，然后再参照下面的表：

CFLAGS= -march=i386 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=i386 -O3 -pipe -fomit-frame-pointer

i486 (Intel)：


CFLAGS= -march=i486 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=i486 -O3 -pipe -fomit-frame-pointer

Pentium 1 (Intel)


CFLAGS= -march=pentium -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium -O3 -pipe -fomit-frame-pointer

Pentium MMX (Intel)


CFLAGS= -march=pentium-mmx -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium-mmx -O3 -pipe -fomit-frame-pointer

Pentium PRO (Intel)


CFLAGS= -march=pentiumpro -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentiumpro -O3 -pipe -fomit-frame-pointer

Pentium II (Intel)


CFLAGS= -march=pentium2 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium2 -O3 -pipe -fomit-frame-pointer

Celeron (Mendocino), aka Celeron1 (Intel)


CFLAGS= -march=pentium2 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium2 -O3 -pipe -fomit-frame-pointer

Pentium III (Intel)


CFLAGS= -march=pentium3 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium3 -O3 -pipe -fomit-frame-pointer

Celeron (Coppermine) aka Celeron2 (Intel)


CFLAGS= -march=pentium3 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium3 -O3 -pipe -fomit-frame-pointer

Celeron (Willamette?) (Intel)


CFLAGS= -march=pentium4 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium4 -O3 -pipe -fomit-frame-pointer

Pentium 4 (Intel)


CFLAGS= -march=pentium4 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium4 -O3 -pipe -fomit-frame-pointer

Eden C3/Ezra (Via)


CFLAGS= -march=i586 -m3dnow -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=i586 -m3dnow -O3 -pipe -fomit-frame-pointer

K6 (AMD)


CFLAGS= -march=k6 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=k6 -O3 -pipe -fomit-frame-pointer

K6-2 (AMD)


CFLAGS= -march=k6-2 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=k6-2 -O3 -pipe -fomit-frame-pointer

K6-3 (AMD)


CFLAGS= -march=k6-3 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=k6-3 -O3 -pipe -fomit-frame-pointer

Athlon (AMD)


CFLAGS= -march=athlon -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=athlon -O3 -pipe -fomit-frame-pointer

Athlon-tbird, aka K7 (AMD)


CFLAGS= -march=athlon-tbird -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=athlon-tbird -O3 -pipe -fomit-frame-pointer

Athlon-tbird XP (AMD)


CFLAGS= -march=athlon-xp -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=athlon-xp -O3 -pipe -fomit-frame-pointer

Athlon 4(AMD)


CFLAGS= -march=athlon-4 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=athlon-4 -O3 -pipe -fomit-frame-pointer

Athlon XP (AMD)


CFLAGS= -march=athlon-xp -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=athlon-xp -O3 -pipe -fomit-frame-pointer

Athlon MP (AMD)


CFLAGS= -march=athlon-mp -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=athlon-mp -O3 -pipe -fomit-frame-pointer

根据你cpu的型号选择。好了，就这样。
Good luck!

Kevin

这个好象看到过多次了，跟linux的差不多，始终不赶试试

不知道使用会不会引起系统不稳定的状态，还有原来听 DimAngel兄讲他用过-03优化，但编译内核后系统就挂了，不知道哈兄用过没，会出现这样的问题嘛，

777

奇怪，我怎么没有/etc/make.conf,看得很清楚了。:ask :ask

Surf

我的也没有,只在
/etc/deafults/make.conf
有一个

哈蜜瓜

可以把/etc/default/make.conf拷至/etc目录
我的是intel c3 cpu,则采用以下参数:
CFLAGS= -march=pentium3 -O3 -pipe -fomit-frame-pointer
CXXFLAGS+= -march=pentium3 -O3 -pipe -fomit-frame-pointer
ports中用gcc3编译的软件都是用这个参数,至目前也没发现什么异常.

Surf

我现在用的gcc是2.9.3好像,看来要先升级一下了.

herohua

我的etc/make.conf是有的，不过只有下面几行

2. # -- use.perl generated deltas -- #
3. # Created: Sat Sep 20 14:57:34 2003
4. # Setting to use base perl from ports:
5. PERL_VER=5.6.1
6. PERL_VERSION=5.6.1
7. PERL_ARCH=mach
8. NOPERL=yo
9. NO_PERL=yo
10. NO_PERL_WRAPPER=yo

复制代码

这个怎么设置呢？

我用的是FreeBSD5.1 release, KDE3.1.2

Freebird

#cp /etc/defaults/make.conf /etc

herohua

/etc/defaults/下没有make.conf, 晕倒

root@hero:/%162>cd /etc/defaults/
root@hero:/etc/defaults%163>ls
at              pccard.conf     periodic.conf   rc.conf

咋办泥？

Kevin

自己建立一个