centos 6.3 64bit用tcmalloc优化nginx
一,tcmalloc全称thread-caching malloc,是谷歌开发的开源工具。与标准的glibc库的malloc比。tcmalloc在内存分配效率和速度比malloc高。至于为什么比malloc,有兴趣可以参考。下面这个网址。
http://www.mysqlops.com/2011/06/14/google-tcmalloc-malloc.html#more-737
二,现在开始介绍在64bit centos 6.3的版本中让nginx使用tcmalloc。需要用到的软件都已经上传到附件中。
三,安装libunwind库。
# tar xf libunwind-1.0.tar.gz
# tar xf libunwind-1.0
#CFLAGS=-fPIC ./configure添加编译参数
# make CFLAGS=-fPIC
# make CFLAGS=-fPIC install
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这样执行会出现如下错误:
libtool: install: error: relink `libunwind-setjmp.la' with the above command before installing it
make[3]: *** [install-libLTLIBRARIES] Error 1
make[3]: Leaving directory `/down/libunwind-1.0/src'
make[2]: *** [install-am] Error 2
make[2]: Leaving directory `/down/libunwind-1.0/src'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/down/libunwind-1.0/src'
make: *** [install-recursive] Error 1
产生这种问题的原因:autotools兼容性的问题,运行命令autoreconf -i -f ,在重新编译安装下。
#autoreconf -i -f
#make clean
#CFLAGS=-fPIC ./configure
#make CFLAGS=-fPIC
#make CFLAGS=-fPIC install
四,安装gpperftools:
#tar xf gperftools-2.0.tar.gz
# cd gperftools-2.0
#./configure
#make && make install
这样安装会会报如下错误:
cc1plus: warning: unrecognized command line option "-Wno-unused-result"
ake: *** [stacktrace.lo] Error 1
为什么出现在这种错误,因此是64bit系统,至于更深度的解释,安装说明中有。下面重新编译。
#make clean
#./configure --enable-frame-pointers
#make && make install
#echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf
#ldconfig
五,编译pcre,使nginx支持http rewrite。
# tar xf pcre-8.10.tar.gz
# cd pcre-8.10
# ./configure
# make && make install
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六,编译nginx
# tar xf nginx-1.2.3.tar.gz
# ./configure
--with-http_ssl_module /
--with-http_flv_module /
--with-http_stub_status_module /
--with-http_gzip_static_module /
--http-client-body-temp-path=/var/tmp/nginx/client/ /
--http-proxy-temp-path=/var/tmp/nginx/proxy/ /
--http-fastcgi-temp-path=/var/tmp/nginx/fcgi/ /
--http-uwsgi-temp-path=/var/tmp/nginx/uwsgi /
--http-scgi-temp-path=/var/tmp/nginx/scgi /
--with-pcre /
--with-google_perftools_module
# make && make install
7,为gperftools创建线程目录
#mkdir /tmp/tcmalloc
#chmod 0777 /tmp/tcmalloc
8,修改nginx的配置文件
#vim /usr/local/nginx/conf/nginx.conf
#pid logs/nginx.pid;
google_perftools_profiles /tmp/tcmalloc;添加这一行
9,启动nginx,并验证tcmalloc有没有正常加载
# /usr/local/nginx/sbin/nginx
# lsof -n |grep tcmalloc
nginx 1893 nobody 9w REG 253,0 0 43018 /tmp/tcmalloc.1893
nginx 1894 nobody 11w REG 253,0 0 43016 /tmp/tcmalloc.1894
至此已经替换成功。