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 data access monitoring framework subsystem for the Linux kernel.
8 monitoring and the monitoring results based sy !! 8 The core mechanisms of DAMON (refer to :doc:`design` for the detail) make it
9 monitoring :ref:`mechanisms <damon_design_moni <<
10 9
11 - *accurate* (the monitoring output is useful 10 - *accurate* (the monitoring output is useful enough for DRAM level memory
12 management; It might not appropriate for CP 11 management; It might not appropriate for CPU Cache levels, though),
13 - *light-weight* (the monitoring overhead is 12 - *light-weight* (the monitoring overhead is low enough to be applied online),
14 and 13 and
15 - *scalable* (the upper-bound of the overhead 14 - *scalable* (the upper-bound of the overhead is in constant range regardless
16 of the size of target workloads). 15 of the size of target workloads).
17 16
18 Using this framework, therefore, the kernel ca !! 17 Using this framework, therefore, the kernel's memory management mechanisms can
19 access-aware fashion. Because the features ar !! 18 make advanced decisions. Experimental memory management optimization works
20 space </admin-guide/mm/damon/index>`, users wh !! 19 that incurring high data accesses monitoring overhead could implemented again.
21 their workloads can write personalized applica !! 20 In user space, meanwhile, users who have some special workloads can write
22 and optimizations of their workloads and syste !! 21 personalized applications for better understanding and optimizations of their
23 !! 22 workloads and systems.
24 For easier development of such systems, DAMON <<
25 :ref:`DAMOS <damon_design_damos>` (DAMon-based <<
26 to the monitoring. Using the feature, DAMON u <<
27 spaces </admin-guide/mm/damon/index>` can do a <<
28 with no code but simple configurations. <<
29 23
30 .. toctree:: 24 .. toctree::
31 :maxdepth: 2 25 :maxdepth: 2
32 26
33 faq 27 faq
34 design 28 design
35 api 29 api
36 maintainer-profile <<
37 <<
38 To utilize and control DAMON from the user-spa <<
39 administration :doc:`guide </admin-guide/mm/da <<
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