diff options
Diffstat (limited to 'community/gsoc/project_ideas/vm_tuning.mdwn')
| -rw-r--r-- | community/gsoc/project_ideas/vm_tuning.mdwn | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/community/gsoc/project_ideas/vm_tuning.mdwn b/community/gsoc/project_ideas/vm_tuning.mdwn deleted file mode 100644 index ecc5f9f4..00000000 --- a/community/gsoc/project_ideas/vm_tuning.mdwn +++ /dev/null @@ -1,35 +0,0 @@ -[[!meta copyright="Copyright © 2008, 2009 Free Software Foundation, Inc."]] - -[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable -id="license" text="Permission is granted to copy, distribute and/or modify this -document under the terms of the GNU Free Documentation License, Version 1.2 or -any later version published by the Free Software Foundation; with no Invariant -Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license -is included in the section entitled -[[GNU Free Documentation License|/fdl]]."]]"""]] - -[[!meta title="VM Tuning"]] - -Hurd/[[microkernel/Mach]] presently make very bad use of the available physical memory in the -system. Some of the problems are inherent to the system design (the kernel -can't distinguish between important application data and discardable disk -buffers for example), and can't be fixed without fundamental changes. Other -problems however are an ordinary lack of optimization, like extremely crude -heuristics when to start paging. (See <http://lists.gnu.org/archive/html/bug-hurd/2007-08/msg00034.html> for example.) -Many parameters are based on assumptions from -a time when typical machines had like 16 MiB of RAM, or simply have been set to -arbitrary values and never tuned for actual use. - -The goal of this project is to bring the virtual memory management in Hurd/Mach -closer to that of modern mainstream kernels (Linux, FreeBSD), by comparing the -implementation to other systems, implementing any worthwhile improvements, and -general optimization/tuning. It requires very good understanding of the Mach -VM, and virtual memory in general. - -This project is related to [[!GNU_Savannah_task 5489]]. - -Possible mentors: Samuel Thibault (youpi) - -Exercise: Make some modification to the existing VM code. You could try to find -a piece of code that can be improved with simple code optimization, for -example. |