README
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- Documentation for /proc/sys/ kernel version 2.2.10
- (c) 1998, 1999, Rik van Riel <riel@nl.linux.org>
- 'Why', I hear you ask, 'would anyone even _want_ documentation
- for them sysctl files? If anybody really needs it, it's all in
- the source...'
- Well, this documentation is written because some people either
- don't know they need to tweak something, or because they don't
- have the time or knowledge to read the source code.
- Furthermore, the programmers who built sysctl have built it to
- be actually used, not just for the fun of programming it :-)
- ==============================================================
- Legal blurb:
- As usual, there are two main things to consider:
- 1. you get what you pay for
- 2. it's free
- The consequences are that I won't guarantee the correctness of
- this document, and if you come to me complaining about how you
- screwed up your system because of wrong documentation, I won't
- feel sorry for you. I might even laugh at you...
- But of course, if you _do_ manage to screw up your system using
- only the sysctl options used in this file, I'd like to hear of
- it. Not only to have a great laugh, but also to make sure that
- you're the last RTFMing person to screw up.
- In short, e-mail your suggestions, corrections and / or horror
- stories to: <riel@nl.linux.org>
- Rik van Riel.
- ==============================================================
- Introduction:
- Sysctl is a means of configuring certain aspects of the kernel
- at run-time, and the /proc/sys/ directory is there so that you
- don't even need special tools to do it!
- In fact, there are only four things needed to use these config
- facilities:
- - a running Linux system
- - root access
- - common sense (this is especially hard to come by these days)
- - knowledge of what all those values mean
- As a quick 'ls /proc/sys' will show, the directory consists of
- several (arch-dependent?) subdirs. Each subdir is mainly about
- one part of the kernel, so you can do configuration on a piece
- by piece basis, or just some 'thematic frobbing'.
- The subdirs are about:
- debug/ <empty>
- dev/ device specific information (eg dev/cdrom/info)
- fs/ specific filesystems
- filehandle, inode, dentry and quota tuning
- binfmt_misc <linux/Documentation/binfmt_misc.txt>
- kernel/ global kernel info / tuning
- miscellaneous stuff
- net/ networking stuff, for documentation look in:
- <linux/Documentation/networking/>
- proc/ <empty>
- sunrpc/ SUN Remote Procedure Call (NFS)
- vm/ memory management tuning
- buffer and cache management
- These are the subdirs I have on my system. There might be more
- or other subdirs in another setup. If you see another dir, I'd
- really like to hear about it :-)