Liunx安装 jemalloc

先github上下载：

https://github.com/jemalloc/jemalloc/releases

下载好源码包，解压

[root@sasha-payment-4 ~ ]# cd /usr/local/src[root@sasha-payment-4 src ]# tar -xvf jemalloc-4.5.0.tar.bz2

在此目录下预编译:

#编译
[root@sasha-payment-4 src ]#cd jemalloc-4.5.0[root@sasha-payment-4 jemalloc-4.5.0]# ./configure 

完成后再编译：

[root@sasha-payment-4 jemalloc-4.5.0]# make && make install[root@sasha-payment-4 jemalloc-4.5.0]# echo '/usr/local/lib' > /etc/ld.so.conf.d/local.conf
[root@sasha-payment-4 jemalloc-4.5.0]# ldconfig

使用jemalloc优化Nginx

#编译nginx[root@sasha-payment-4 nginx-1.12.1]# ./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-http_flv_module --with-http_gzip_static_module --with-ld-opt="-ljemalloc"[root@sasha-payment-4 nginx-1.12.1]# make#把原来Nginx执行文件backup一份
[root@sasha-payment-4 nginx-1.12.1]# mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak#拷贝Nginx执行文件
[root@sasha-payment-4 nginx-1.12.1]# ls
auto  CHANGES  CHANGES.ru  conf  configure  contrib  html  LICENSE  Makefile  man  objs  README  src
[root@sasha-payment-4 nginx-1.12.1]# cd objs/
[root@sasha-payment-3 objs]# ls
autoconf.err  Makefile  nginx  nginx.8  ngx_auto_config.h  ngx_auto_headers.h  ngx_modules.c  ngx_modules.o  src[root@sasha-payment-4 objs]# mv nginx /usr/local/nginx/sbin/

验证jemalloc优化Nginx是否生效

[root@sasha-payment-4 objs]# lsof -n | grep jemalloc
bash       4206         root  cwd       DIR              253,1        4096  171966532 /usr/local/src/jemalloc-4.5.0
nginx     18599         root  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18689          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18690          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18691          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18692          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18693          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18694          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18695          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18696          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2
nginx     18697          www  mem       REG              253,1     2601400   12850398 /usr/local/lib/libjemalloc.so.2

说明: 至此jemalloc优化Nginx已生效