google-perftools是一个堆外内存分析工具.
安装gcc
sudo yum -y install gcc make
sudo yum -y install gcc gcc-c++
安装libunwind
wget http://download.savannah.gnu.org/releases/libunwind/libunwind-0.99-beta.tar.gz
默认libunwind安装到/usr/local/lib,使用prefix命令指定安装目录
./configure --prefix=/data0/java/deploy/google-perftools/local/libunwind
make
make install
安装google-perfile
wget https://github.com/gperftools/gperftools/releases/download/gperftools-2.5/gperftools-2.5.tar.gz
./confighre --prefix=/data0/java/deploy/google-perftools/local/gperftools-2.5/
make
make install
使配置生效
vi /etc/ld.so.conf.d/usr_local_lib.conf
编辑，添加以下内容，需要sudo权限
/data0/java/deploy/google-perftools/local/libunwind/lib
:wq! #保存退出
sudo /sbin/ldconfig #执行此命令，使libunwind生效。 需要sudo权限
在应用程序启动前加入：
export LD_PRELOAD=/data0/java/deploy/google-perftools/local/gperftools-2.5/lib/libtcmalloc.so
export HEAPPROFILE=/data0/java/deploy/google-perftools/local/gzip
分析结果
local/gperftools-2.5/bin/pprof --text /usr/local/java/jdk1.7.0_55/bin/java test.0132.heap
然后查看分析结果如下
Using local file /usr/local/java/jdk1.7.0_55/bin/java.
Using local file test.0132.heap.
Total: 237.3 MB
129.2 54.5% 54.5% 129.2 54.5% deflateInit2_
57.5 24.2% 78.7% 57.5 24.2% os::malloc
48.0 20.2% 98.9% 48.0 20.2% init
0.9 0.4% 99.3% 0.9 0.4% ObjectSynchronizer::inflate
0.8 0.3% 99.6% 0.8 0.3% updatewindow
0.4 0.2% 99.8% 0.4 0.2% readCEN
0.3 0.1% 99.9% 0.3 0.1% inflateInit2_
0.1 0.0% 99.9% 0.1 0.0% _dl_allocate_tls
0.0 0.0% 100.0% 129.3 54.5% Java_java_util_zip_Deflater_init
0.0 0.0% 100.0% 0.0 0.0% _dl_new_object
0.0 0.0% 100.0% 1.2 0.5% JavaThread::JavaThread@94a810
0.0 0.0% 100.0% 0.0 0.0% SharedHeap::SharedHeap
0.0 0.0% 100.0% 0.0 0.0% vm_init_globals
0.0 0.0% 100.0% 0.4 0.2% ZIP_Put_In_Cache0
0.0 0.0% 100.0% 0.0 0.0% strdup
0.0 0.0% 100.0% 0.0 0.0% read_alias_file
0.0 0.0% 100.0% 0.0 0.0% _nl_intern_locale_data
0.0 0.0% 100.0% 0.3 0.1% Java_java_util_zip_Inflater_init
0.0 0.0% 100.0% 13.4 5.6% init_globals
