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Shuxin Yang 9e6507bd22 rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory		2014-08-07 11:05:29 -07:00
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Makefile	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
README.md	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
demo.c	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
lj_mm.h	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
lm_internal.h	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
lm_util.h	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
page_alloc.c	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
rb_test.cxx	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
rbtree.c	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
rbtree.h	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00
trunk.c	rudimentary implementation luajit mem-managment for taking full advantage of lower 2G memory	2014-08-07 11:05:29 -07:00

README.md

luajit-mm

Luajit take full advantage of lower 2G memory on AMD64 platform.

Rumdimentary implementation. Not yet fully tested. Not yet cleanup the code. Quite a few optimizatio is not yet implemented.

Immediate todo

o.Refine and finish this README.
o.test, add enhancements.

problem statement:

On Linux/x86-64 platform, Luajit can use no more than 1G memory due to the combination of bunch of nasty issues. 1G is way too small for server-side application.

This package is trying to replace mmap/munmap/mremap with hence provide up to about 2G space.

Basic ideas

o. When a application, which contain luajit, is launched, reserve the the space
   from where `sbrk(0)` indidate all the way to 2G.

o. Perform page allocation on the reserved space. the mmap/munmap/mremap is built
   on this page allocation. Currently, we use buddy allocation for page allocation
   with some optimizations in an attemp to reduce working set.