Linux操作系统优化方法

Linux操作系统优化方法：

        如何才能使你的系统达到最优化？以下只是一个简单的小方法，而其实一个系统的优化调整远远不止如此，其性能需要根据实际需要调整不同参数。其不可能有一种方法达到所有系统需求。

1、检查你的gcc版本：注意你的gcc版本必须在3.0以上。

#gcc --version

2、获取你的cpu的型号：

cat /proc/cpuinfo

3、在/etc/下建立make.conf文件，并根据cpu的型号写入不同内容。

◆i386 (Intel)：

CHOST=\"i386-pc-linux-gnu\"

CFLAGS=\"-march=i386 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=i386 -O3 -pipe -fomit-frame-pointer\"

◆i486 (Intel)：

CHOST=\"i486-pc-linux-gnu\"

CFLAGS=\"-march=i486 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=i486 -O3 -pipe -fomit-frame-pointer\"

◆Pentium 1 (Intel)

CHOST=\"i586-pc-linux-gnu\"

CFLAGS=\"-march=pentium -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium -O3 -pipe -fomit-frame-pointer\"

◆Pentium MMX (Intel)

CHOST=\"i586-pc-linux-gnu\"

CFLAGS=\"-march=pentium-mmx -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium-mmx -O3 -pipe -fomit-frame-pointer\"

◆Pentium PRO (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentiumpro -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentiumpro -O3 -pipe -fomit-frame-pointer\"

◆Pentium II (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentium2 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium2 -O3 -pipe -fomit-frame-pointer\"

◆Celeron (Mendocino), aka Celeron1 (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentium2 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium2 -O3 -pipe -fomit-frame-pointer\"

◆Pentium III (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentium3 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium3 -O3 -pipe -fomit-frame-pointer\"

◆Celeron (Coppermine) aka Celeron2 (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentium3 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium3 -O3 -pipe -fomit-frame-pointer\"

◆Celeron (Willamette?) (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentium4 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium4 -O3 -pipe -fomit-frame-pointer\"

◆Pentium 4 (Intel)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=pentium4 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=pentium4 -O3 -pipe -fomit-frame-pointer\"

◆Eden C3/Ezra (Via)

CHOST=\"i586-pc-linux-gnu\"

CFLAGS=\"-march=i586 -m3dnow -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=i586 -m3dnow -O3 -pipe -fomit-frame-pointer\"

◆K6 (AMD)

CHOST=\"i586-pc-linux-gnu\"

CFLAGS=\"-march=k6 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=k6 -O3 -pipe -fomit-frame-pointer\"

◆K6-2 (AMD)

CHOST=\"i586-pc-linux-gnu\"

CFLAGS=\"-march=k6-2 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=k6-2 -O3 -pipe -fomit-frame-pointer\"

◆K6-3 (AMD)

CHOST=\"i586-pc-linux-gnu\"

CFLAGS=\"-march=k6-3 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=k6-3 -O3 -pipe -fomit-frame-pointer\"

◆Athlon (AMD)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=athlon -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=athlon -O3 -pipe -fomit-frame-pointer\"

◆Athlon-tbird, aka K7 (AMD)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=athlon-tbird -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=athlon-tbird -O3 -pipe -fomit-frame-pointer\"

◆Athlon-tbird XP (AMD)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=athlon-xp -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=athlon-xp -O3 -pipe -fomit-frame-pointer\"

◆Athlon 4(AMD)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=athlon-4 -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=athlon-4 -O3 -pipe -fomit-frame-pointer\"

◆Athlon XP (AMD)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=athlon-xp -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=athlon-xp -O3 -pipe -fomit-frame-pointer\"

◆Athlon MP (AMD)

CHOST=\"i686-pc-linux-gnu\"

CFLAGS=\"-march=athlon-mp -O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-march=athlon-mp -O3 -pipe -fomit-frame-pointer\"

◆603 (PowERPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fsigned-char\"

CXXFLAGS=\"-O3 -pipe -fsigned-char\"

◆603e (PowerPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fsigned-char\"

CXXFLAGS=\"-O3 -pipe -fsigned-char\"

◆604 (PowerPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fsigned-char\"

CXXFLAGS=\"-O3 -pipe -fsigned-char\"

◆604e (PowerPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fsigned-char\"

CXXFLAGS=\"-O3 -pipe -fsigned-char\"

◆750 aka as G3 (PowerPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-mcpu=750 -O3 -pipe -fsigned-char -mpowerpc-gfxopt\"

CXXFLAGS=\"-mcpu=750 -O3 -pipe -fsigned-char -mpowerpc-gfxopt\"

◆7400, aka G4 (PowerPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-mcpu=7400 -O2 -pipe -fsigned-char -maltivec

-mabi=altivec -mpowerpc-gfxopt\"

CXXFLAGS=\"-mcpu=7400 -O2 -pipe -fsigned-char -maltivec

-mabi=altivec -mpowerpc-gfxopt\"

-fsigned-char -maltivec -mabi=altivec -mpowerpc-gfxopt\"

◆7450, aka G4 second generation (PowerPC)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-mcpu=7450 -O2 -pipe -fsigned-char

-maltivec -mabi=altivec -mpowerpc-gfxopt\"

CXXFLAGS=\"-mcpu=7450 -O2 -pipe -fsigned-char

-maltivec -mabi=altivec -mpowerpc-gfxopt\"

◆PowerPC (If you don\'t know which one)

CHOST=\"powerpc-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fsigned-char -mpowerpc-gfxopt\"

CXXFLAGS=\"-O3 -pipe -fsigned-char -mpowerpc-gfxopt\"

◆Sparc

CHOST=\"sparc-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-O3 -pipe -fomit-frame-pointer\"

◆Sparc 64

CHOST=\"sparc64-unknown-linux-gnu\"

CFLAGS=\"-O3 -pipe -fomit-frame-pointer\"

CXXFLAGS=\"-O3 -pipe -fomit-frame-pointer\"

完成之后，你编译出的程序运行效率将比以前高很多！只要你有时间，你可以把你的系统如redhat linux 9.0的源代码（后缀.src.rpm）全部重新编译一次，你会发现你的Redhat Linux系统将比原来快一大截！