step 1. 因为是64位的系统,所以先要安装libunwind,32位系统可以忽略此步
wget http://download.savannah.gnu.org/releases/libunwind/libunwind-1.1.tar.gz tar zxvf libunwind-1.1.tar.gz cd libunwind-1.1/ CFLAGS=-fPIC ./configure --enable-shared make CFLAGS=-fPIC make CFLAGS=-fPIC install
step 2.安装Google Performance Tools
wget https://gperftools.googlecode.com/files/gperftools-2.1.tar.gz tar zxvf gperftools-2.1.tar.gz cd gperftools-2.1/ ./configure make -j8 make install echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf /sbin/ldconfig
step 3. 修改MySQL启动脚本(根据你的MySQL安装位置而定):
vi /usr/local/mysql/bin/mysqld_safe
在# executing mysqld_safe的下一行,加上:
export LD_PRELOAD=/usr/local/lib/libtcmalloc.so
保存后退出,然后重启MySQL服务器。
step 4. 使用lsof命令查看tcmalloc是否起效:
lsof -n|grep tcmalloc
如果发现以下信息,就证明配置成功了。
mysqld 12278 mysql mem REG 202,1 2241773 1186797 /usr/local/lib/libtcmalloc.so.4.1.2