procmem procrank--usr space内存分析工具

源码下载：

https://github.com/sunao2002002/mem_proc.git

1. 解压后用下文内容替换CMakeLists.txt.

   SET(CMAKE_C_COMPILER "arm-buildroot-linux-uclibcgnueabihf-gcc")
   SET(CMAKE_CXX_COMPILER "arm-buildroot-linux-uclibcgnueabihf-g++")
   cmake_minimum_required(VERSION 2.8)
   PROJECT (mem_proc)
   file(GLOB SOURCES "${PROJECT_SOURCE_DIR}/libpagemap/*.c")
   add_definitions (
   -D_LARGEFILE64_SOURCE
   )
   include_directories (${PROJECT_SOURCE_DIR}/libpagemap/include)
   add_library(pagemap ${SOURCES})
   
   add_executable(procmem  ${PROJECT_SOURCE_DIR}/procmem/procmem.c)
   target_link_libraries(procmem pagemap)
   add_executable(procrank  ${PROJECT_SOURCE_DIR}/procrank/procrank.c)
   target_link_libraries(procrank pagemap)
   

2. cd mem_proc

3. mkdir out

4. cd out

5. cmake ..

6. make 即可生成procmem和procrank

VSS：Virtual Set Size，虚拟内存耗用内存，包括共享库的内存

RSS：Resident Set Size，实际使用物理内存，包括共享库

PSS：Proportional Set Size，实际使用的物理内存，共享库按比例分配

USS：Unique Set Size，进程独占的物理内存，不计算共享库，也可以理解为将进程杀死能释