| .. SPDX-License-Identifier: GPL-2.0 |
| |
| ========================== |
| DAMON: Data Access MONitor |
| ========================== |
| |
| DAMON is a Linux kernel subsystem that provides a framework for data access |
| monitoring and the monitoring results based system operations. The core |
| monitoring mechanisms of DAMON (refer to :doc:`design` for the detail) make it |
| |
| - *accurate* (the monitoring output is useful enough for DRAM level memory |
| management; It might not appropriate for CPU Cache levels, though), |
| - *light-weight* (the monitoring overhead is low enough to be applied online), |
| and |
| - *scalable* (the upper-bound of the overhead is in constant range regardless |
| of the size of target workloads). |
| |
| Using this framework, therefore, the kernel can operate system in an |
| access-aware fashion. Because the features are also exposed to the user space, |
| users who have special information about their workloads can write personalized |
| applications for better understanding and optimizations of their workloads and |
| systems. |
| |
| For easier development of such systems, DAMON provides a feature called DAMOS |
| (DAMon-based Operation Schemes) in addition to the monitoring. Using the |
| feature, DAMON users in both kernel and user spaces can do access-aware system |
| operations with no code but simple configurations. |
| |
| .. toctree:: |
| :maxdepth: 2 |
| |
| faq |
| design |
| api |
| maintainer-profile |
