New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

A Top-Down Method for Performance Analysis and Counters Architecture #27

Open

mrdrivingduck opened this issue Jan 23, 2024 · 1 comment

Assignees

Labels

area/performance

Owner

mrdrivingduck commented Jan 23, 2024

A_Top-Down_method_for_performance_analysis_and_counters_architecture.pdf

介绍了一种在现代乱序执行 CPU 中识别出性能瓶颈的方法。复用或引入了一些新的 PMU 事件，根据这些事件的取值可以得到程序的性能瓶颈分类。确定一个大类后，还可以继续确定某一个小类。每一个小类对应了一个可能的优化方向。从大类到小类组成了一个自顶向下的树状层次结构。

mrdrivingduck added the area/performance label

mrdrivingduck self-assigned this

Owner Author

mrdrivingduck commented Jan 23, 2024

如果确定瓶颈不在某个类别中，那么该类别及其下属小类中的因素可以被忽略。

具体的分类标准由 PMU 得到的数据确定，比如顶层四大分类的区分方法：

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment