function::set_kernel_int - Linux
Overview
function::set_kernel_int
alters kernel variables without having to rebuild the kernel modules. It allows users to adjust kernel behavior dynamically, enabling quick experimentation and troubleshooting of driver issues.
Syntax
function::set_kernel_int <variable> <new_value>
Options
- variable: The kernel variable to be modified.
- new_value: The new value to be set for the variable.
Examples
- Set the maximum number of open files in the system:
function::set_kernel_int fs.file-max 65536
- Adjust the TCP congestion control algorithm:
function::set_kernel_int net.ipv4.tcp_congestion_control bbr
Common Issues
- Ensure that the
sysfs
filesystem is mounted. - Verify that you have sufficient privileges to modify kernel variables.
- Note that some variables may require a reboot to take effect.
Integration
function::set_kernel_int
can be useful in conjunction with tools like sysctl
for managing kernel parameters. It can also be incorporated into scripts for automating system configuration changes.
Related Commands
sysctl
: Dynamically view and modify kernel parameters.modprobe
: Load and unload kernel modules.- Linux Kernel Documentation: Official documentation for Linux kernel variables.