diff --git a/hosts/FredOS-Eee.nix b/hosts/FredOS-Eee.nix
index 1a1ec2b..67a60a8 100644
--- a/hosts/FredOS-Eee.nix
+++ b/hosts/FredOS-Eee.nix
@@ -101,8 +101,14 @@ in
   # 1GB RAM: compressed swap only (disk swap is off, see hardware file).
   zramSwap.enable = true;
   # A heavy page (bbc.co.uk) used to freeze everything; now the biggest
-  # process (the browser's web process) dies instead.
+  # process (the browser's web process) dies instead. zram lives in RAM, so
+  # swap never looks full: judge on RAM alone.
   services.earlyoom.enable = true;
+  services.earlyoom.freeSwapThreshold = 100;
+  # Even with no disk swap it still froze: the kernel kept evicting and
+  # re-reading program code from disk. MGLRU's min_ttl OOM-kills instead
+  # when it can't keep the last 1s of working set in RAM.
+  systemd.tmpfiles.rules = [ "w /sys/kernel/mm/lru_gen/min_ttl_ms - - - - 1000" ];
 
   # The NixOS manual is a big from-source build on i686 for a page nobody reads.
   documentation.nixos.enable = false;