1 .. SPDX-License-Identifier: GPL-2.0 2 3 ========================== 4 DAMON: Data Access MONitor 5 ========================== 6 7 DAMON is a Linux kernel subsystem that provides a framework for data access 8 monitoring and the monitoring results based system operations. The core 9 monitoring :ref:`mechanisms <damon_design_monitoring>` of DAMON make it 10 11 - *accurate* (the monitoring output is useful enough for DRAM level memory 12 management; It might not appropriate for CPU Cache levels, though), 13 - *light-weight* (the monitoring overhead is low enough to be applied online), 14 and 15 - *scalable* (the upper-bound of the overhead is in constant range regardless 16 of the size of target workloads). 17 18 Using this framework, therefore, the kernel can operate system in an 19 access-aware fashion. Because the features are also exposed to the :doc:`user 20 space </admin-guide/mm/damon/index>`, users who have special information about 21 their workloads can write personalized applications for better understanding 22 and optimizations of their workloads and systems. 23 24 For easier development of such systems, DAMON provides a feature called 25 :ref:`DAMOS <damon_design_damos>` (DAMon-based Operation Schemes) in addition 26 to the monitoring. Using the feature, DAMON users in both kernel and :doc:`user 27 spaces </admin-guide/mm/damon/index>` can do access-aware system operations 28 with no code but simple configurations. 29 30 .. toctree:: 31 :maxdepth: 2 32 33 faq 34 design 35 api 36 maintainer-profile 37 38 To utilize and control DAMON from the user-space, please refer to the 39 administration :doc:`guide </admin-guide/mm/damon/index>`.
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