一开始需要安装一个driver！
Install the Sampling Drivers for Windows* Targets
To install the drivers on Windows 7 (deprecated) and Windows Server 2008 R2 operating systems, you must enable the SHA-2 code signing support for these systems by applying
Microsoft Security update 3033929.
If the security update is not installed, event-based sampling analysis types will not work properly on your system.
To verify the sampling driver is installed correctly on a Microsoft Windows* OS, open the command prompt as an administrator and run the
amplxe-sepreg.exe
utility located at <install-dir
/bin64
.
To make sure your system meets all the requirements necessary for the hardware event-based sampling collection, enter:
amplxe-sepreg.exe -c
This command performs the following dependency checks required to install the sampling driver:
- platform, architecture, and OS environment
- availability of the sampling driver binaries: sepdrv4_x.sys , socperf2_x.sys , and sepdal.sys
- administrative privileges
- 32/64-bit installation
To check whether the sampling driver is loaded, enter:
amplxe-sepreg.exe -s
If the sampling driver is not installed but the system is supported by the
VTune
Profiler
, execute the following command with the administrative privileges to install the driver:
amplxe-sepreg.exe -i
使用amplxe-sepreg.exe -i 安装成功后！
管理员运行即出现：
修改为10ms，开始运行：
可以看到在进行硬件指令数据采集的时候，几乎是不占用CPU的！！！
group那里没有event cpu数据？？？咋回事？？？是因为选择的模式不对！！只有microarchtecture 分析才会有！！！
在这里，才有CPU event count，
注意采集的数据非常大！采用1ms，有700多MB数据！！！
Original: https://www.cnblogs.com/bonelee/p/16545551.html
Author: bonelee
Title: Intel® VTune™ Profiler ——异常检测，没有感觉到惊艳，性能的话还是热点分析更好用，另外microarch 分析可以深入cpu看性能问题
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