From 19b16d6942cc5ca104c81ce033620f60266fc4cd Mon Sep 17 00:00:00 2001
From: Christoph Cullmann <christoph@cullmann.io>
Date: Thu, 3 Oct 2024 14:49:01 +0200
Subject: [PATCH] make ARC fast

---
 share/common.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/share/common.nix b/share/common.nix
index feae129..cf053cf 100644
--- a/share/common.nix
+++ b/share/common.nix
@@ -33,6 +33,10 @@ in
     # no hibernate for ZFS systems
     "nohibernate"
 
+    # make ARC fast
+    "init_on_alloc=0"
+    "init_on_free=0"
+
     # don't check for split locks, for KVM and Co.
     "split_lock_detect=off"
   ];
@@ -42,6 +46,8 @@ in
     options zfs zfs_arc_meta_limit_percent=75
     options zfs zfs_arc_min=134217728
     options zfs zfs_arc_max=4294967296
+    options zfs zfs_compressed_arc_enabled=0
+    options zfs zfs_abd_scatter_enabled=0
     options zfs zfs_txg_timeout=30
     options zfs zfs_vdev_scrub_min_active=1
     options zfs zfs_vdev_scrub_max_active=1