19 lines
994 B
Nix
19 lines
994 B
Nix
{ config, ... }:
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{
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boot.kernel.sysctl = {
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#---------------------------------------------------------------------
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# SSD tweaks: Adjust settings for an SSD to optimize performance.
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#---------------------------------------------------------------------
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"vm.dirty_background_ratio" = "40"; # Set the ratio of dirty memory at which background writeback starts (5%). Adjusted for SSD.
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"vm.dirty_expire_centisecs" = "3000"; # Set the time at which dirty data is old enough to be eligible for writeout (6000 centiseconds). Adjusted for SSD.
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"vm.dirty_ratio" = "80"; # Set the ratio of dirty memory at which a process is forced to write out dirty data (10%). Adjusted for SSD.
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"vm.dirty_time" = "0"; # Disable dirty time accounting.
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"vm.dirty_writeback_centisecs" = "300"; # Set the interval between two consecutive background writeback passes (500 centiseconds)
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};
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services.fstrim.enable = true;
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}
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