相关疑难解决方法(0)

我们设置了两个相同的HP Z840工作站,其规格如下

• 2 x Xeon E5-2690 v4 @ 2.60GHz(Turbo Boost ON,HT OFF,共28个逻辑CPU)
• 32GB DDR4 2400内存,四通道

并在每个上安装了Windows 7 SP1(x64)和Windows 10 Creators Update(x64).

然后我们运行了一个小内存基准测试(下面的代码,使用VS2015 Update 3,64位架构构建),它可以同时从多个线程执行内存分配 - 无填充.

#include <Windows.h>
#include <vector>
#include <ppl.h>

unsigned __int64 ZQueryPerformanceCounter()
{
    unsigned __int64 c;
    ::QueryPerformanceCounter((LARGE_INTEGER *)&c);
    return c;
}

unsigned __int64 ZQueryPerformanceFrequency()
{
    unsigned __int64 c;
    ::QueryPerformanceFrequency((LARGE_INTEGER *)&c);
    return c;
}

class CZPerfCounter {
public:
    CZPerfCounter() : m_st(ZQueryPerformanceCounter()) {};
    void reset() { m_st = ZQueryPerformanceCounter(); };
    unsigned __int64 elapsedCount() { return ZQueryPerformanceCounter() - m_st; }; …