測試技術教育訓練：如何測試磁盤寫的速度 2

//測試寫磁盤速度

void writeFileTestFun()

{

    //堆記憶體申請，顯然棧記憶體不合适

    char* szTenMBBuf = (char*)malloc(WRITE_BUFF_SIZE); 

    (void)initBuf(szTenMBBuf, WRITE_BUFF_SIZE);

    size_t nBeginTicks = GetTickCount();

    cout << "BeginTime = " << nBeginTicks << endl;

    (void)writeFileFun(szTenMBBuf);

    size_t nEndTicks = GetTickCount();

    cout << "EndTime = " << nEndTicks << endl;

    size_t nSpan = nEndTicks - nBeginTicks;

    cout << "nSpanTime = " << nSpan << "ms" << endl; //ms

    float nTotalBytes = WRITE_BUFF_SIZE*MAX_WRITE_CNT;  //總寫入位元組數

    float nTotalTimes = (float)(nSpan) / 1000.0f;       //總耗費時間,機關s

    cout << "nTotalWriteBytes = " << nTotalBytes << endl;

    cout << "nTotalTimes = " << nTotalTimes << endl;

    float fSpeed =  nTotalBytes / nTotalTimes;

    cout << "Speed = " << fSpeed << "Byte/s" << endl;   //寫入速度 Byte/s

    cout << "Speed = " << fSpeed / 1024.0f / 1024.0f << "MB/s" << endl; //寫入速度 MByte/s

    if (NULL != szTenMBBuf)

    {

        free(szTenMBBuf);

        szTenMBBuf = NULL;

    }

}

int _tmain(int argc, _TCHAR* argv[])

    (void)writeFileTestFun();