From 929cfbf0d4620892e6ad1231c32c9c7b8c9265c4 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Thu, 25 Dec 2025 19:30:17 +0100
Subject: ...

---
 system-profiles/zswap.nix | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 system-profiles/zswap.nix

(limited to 'system-profiles/zswap.nix')

diff --git a/system-profiles/zswap.nix b/system-profiles/zswap.nix
new file mode 100644
index 00000000..ac141f55
--- /dev/null
+++ b/system-profiles/zswap.nix
@@ -0,0 +1,25 @@
+{ ... }:
+
+{
+  config = {
+    boot.kernelParams = [
+      "zswap.enabled=1"
+      "zswap.compressor=zstd"
+      "zswap.zpool=zsmalloc"
+      "zswap.max_pool_percent=25"
+      "zswap.accept_threshold_percent=90"
+      "zswap.shrinker_enabled=1"
+    ];
+
+    boot.initrd.kernelModules = [ "zstd" "zsmalloc" ];
+
+    boot.kernel.sysfs.module.zswap.parameters = {
+      enabled = true;
+      compressor = "zstd";
+      zpool = "zsmalloc";
+      max_pool_percent = 25;
+      accept_threshold_percent = 90;
+      shrinker_enabled = true;
+    };
+  };
+}
-- 
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