Description of sysctl?

Question

linux

Is there a complete description of sysctl options online?
Google gives only articles with descriptions of some parameters.
PS There are recommendations for changing the parameters. Before using them, I would like to find a detailed description and delve into the essence.
OS - RHEL6
Thanks

Answer 1

it is very different everywhere
IMHO simpler
sysctl -a|grep about_what_needs first of
all, you need to set the task of what needs to be changed
and not “to change this ....”

Answer 2

There man 5 procare descriptions for at least some (see files beginning with /proc/sys/). There are also links to other man pages in the descriptions.

Answer 3

The sysctl manual (at least in lamp debian) says:
> sysctl is used to modify kernel parameters at runtime. The parameters available are those listed under /proc/sys/
> Procfs is required for sysctl support in Linux.
That is, sysctl keys on Linux correspond to files in /proc/sys (which, by the way, makes me happy). And in FreeBSD, sysctl uses the sysctl system call of the same name. Thus, you can see the list of keys in linux by doing find /proc/sys -type f (or not? correct if wrong)
And then we look at man proc, there is a (shorter) description of some parameters. You can see for example here: tldp.org/LDP/Linux-Filesystem-Hierarchy/html/proc.html
The rest of the parameters that are in /proc/sys, but not in the documentation, are probably easiest to google.