20 lines
1.1 KiB
Nix
20 lines
1.1 KiB
Nix
{ config, ... }:
|
|
|
|
# Control how and when data is written from memory to disk, which can have an impact on system performance and responsiveness.
|
|
# useful for optimizing memory usage, disk writeback behavior, network settings, and other low-level kernel behaviors.
|
|
|
|
{
|
|
boot.kernel.sysctl = {
|
|
|
|
#---------------------------------------------------------------------
|
|
# HDD tweaks: Adjust settings for an HDD to optimize performance.
|
|
#---------------------------------------------------------------------
|
|
"vm.dirty_background_ratio" = "10"; # Set the ratio of dirty memory at which background writeback starts (10% for HDD).
|
|
"vm.dirty_expire_centisecs" = "6000"; # Set the time at which dirty data is old enough to be eligible for writeout (6000 centiseconds for HDD).
|
|
"vm.dirty_ratio" = "20"; # Set the ratio of dirty memory at which a process is forced to write out dirty data (20% for HDD).
|
|
"vm.dirty_time" = "0"; # Disable dirty time accounting.
|
|
"vm.dirty_writeback_centisecs" = "1000"; # Set the interval between two consecutive background writeback passes (1000 centiseconds for HDD).
|
|
|
|
};
|
|
}
|