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NumaTOP is an observation tool for runtime memory locality characterization and analysis of processes and threads running on a NUMA system. It helps the user characterize the NUMA behavior of processes and threads and identify where the NUMA-related performance bottlenecks reside. The tool uses Intel performance counter sampling technologies and associates the performance data with Linux system runtime information, to provide real-time analysis in production systems.

NumaTOP is an open source project. We would like to invite comments and reviews of the current capabilities and the code. We'd love your suggestions for new features, as well. We encourage you to submit bugs and send us your patches.

Please carefully review our Participation Guidelines before contributing to NumaTOP.

Mailing List:


Note: We will not use any of the integrate, merge, or tracking functions of GitHub, so please continue to use the provided lists.

Bugs and New features

When you discover a problem or want to request a new feature, please post those on the mailing list.


Clone our github repository and send patches! Code speaks louder than words. When you are ready to send patches:


Currently, NumaTOP supports only English.