内存池和tcmalloc的性能比较

这次使用的内存池是原公司的，利用hash_map做的，大概的接口是这样：

template 
class ObjectPool
{ 
public:
    typedef hash_map BlockMap;
    virtual int pop(CObject *&ob);
    virtual int push(const CObject *ob);
private:
    BlockMap _block_map;
};

写测试代码比较了一下内存池和tcmalloc的差距！结果挺让人吃惊！

#define MAX_SIZE 50000
 
 
struct MsgToPut
{
     UINT _wr_ptr;
     UINT _rd_ptr;
     UINT _length;
     CHAR _base[1024];
 
     void reset()
     {
         this->_rd_ptr = this->_wr_ptr = 0;
         this->_length = 1024;
     }
};
 
ObjectPool MsgPool;
 
void* newthread(void* argv)
{
    long long int start = get_os_system_time();
 
    for(int i=0;ireset();
    }
 
    start = get_os_system_time();
    printf("newthread tc malloc :%d\n",start - end);
 
    return (void*)0;
}
 
int main()
{
 
    pthread_t pid;
    pthread_create(&pid,NULL,newthread,NULL);
    pthread_create(&pid,NULL,newthread,NULL);
    pthread_create(&pid,NULL,newthread,NULL);
 
    long long int start = get_os_system_time();
 
    for(int i=0;ireset();
    }
 
    start = get_os_system_time();
    printf("main tc malloc :%d\n",start - end);
 
    return 0;
}

普遍打印数据为：

newthread ObjectPool:189
newthread ObjectPool:202
newthread tc malloc :24
newthread tc malloc :20
main ObjectPool:235
newthread ObjectPool:235
main tc malloc :21
newthread tc malloc :22