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| Filename | Latest commit message | Latest commit date |
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565f0fa902
struct xfrm_state is rather large (768 bytes here) and therefore wastes quite a lot of memory as it falls into the kmalloc-1024 slab cache, leaving 256 bytes of unused memory per XFRM state object -- a net waste of 25%. Using a dedicated slab cache for struct xfrm_state reduces the level of internal fragmentation to a minimum. On my configuration SLUB chooses to create a slab cache covering 4 pages holding 21 objects, resulting in an average memory waste of ~13 bytes per object -- a net waste of only 1.6%. In my tests this led to memory savings of roughly 2.3MB for 10k XFRM states. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.