From 964269520a9c438f63a8f314e308b3fea5f0772c Mon Sep 17 00:00:00 2001 From: sommerfeld Date: Tue, 21 Apr 2026 01:24:55 +0100 Subject: system: add zram swap via zram-generator Cap at 8 GiB, zstd compression. Tune VM for RAM-backed swap: high swappiness, no read-ahead clustering. --- etc/sysctl.d/99-zram.conf | 4 ++++ etc/systemd/zram-generator.conf | 4 ++++ meta/base.txt | 1 + 3 files changed, 9 insertions(+) create mode 100644 etc/sysctl.d/99-zram.conf create mode 100644 etc/systemd/zram-generator.conf diff --git a/etc/sysctl.d/99-zram.conf b/etc/sysctl.d/99-zram.conf new file mode 100644 index 0000000..daa302c --- /dev/null +++ b/etc/sysctl.d/99-zram.conf @@ -0,0 +1,4 @@ +vm.swappiness = 180 +vm.watermark_boost_factor = 0 +vm.watermark_scale_factor = 125 +vm.page-cluster = 0 diff --git a/etc/systemd/zram-generator.conf b/etc/systemd/zram-generator.conf new file mode 100644 index 0000000..c6e112e --- /dev/null +++ b/etc/systemd/zram-generator.conf @@ -0,0 +1,4 @@ +[zram0] +zram-size = min(ram / 2, 8192) +compression-algorithm = zstd +swap-priority = 100 diff --git a/meta/base.txt b/meta/base.txt index 4b81ee2..6444244 100644 --- a/meta/base.txt +++ b/meta/base.txt @@ -61,3 +61,4 @@ zsh-autosuggestions zsh-completions zsh-history-substring-search zsh-syntax-highlighting +zram-generator -- cgit v1.2.3-70-g09d2