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