Introduction

This appendix lists and describes many of the kernel tunable parameters available through the sysctl, /proc, and sysfs interfaces. It provides an overview of how to use the various interfaces to tune the Linux kernel and other key components of the system. Topics covered in this appendix include the following:

• An overview and description of how to use sysctl

• An overview and description of how to use /proc

• An overview and description of how to use sysfs

• A discussion of each type of tunable parameter, including the following:

  General kernel parameters

  Virtual memory parameters

  File system parameters

  Network parameters