debian/changelog

@@ -1,10 +1,3 @@
-tileos-system-adjustments (1.6.1~tileos) unstable; urgency=medium
-
-  * Remove absolete 80-io-tweaks.rules
-  * Move Zram settings from udev to zram-generator.conf
-
- -- Aleksey Samoilov <samoilov.lex@gmail.com>  Mon, 28 Apr 2025 19:47:43 +0400
-
 tileos-system-adjustments (1.6.0~tileos) unstable; urgency=medium
 
   * Update polkit rules 

etc/systemd/zram-generator.conf.d/zram-generator.conf

@@ -1,5 +0,0 @@
-[zram0]
-compression-algorithm = zstd lz4 (type=huge)
-zram-size = ram
-swap-priority = 100
-fs-type = swap

etc/udev/rules.d/30-zram.rules

@@ -1,3 +1,9 @@
+# Prefer to recompress only huge pages. This will result in additional memory
+# savings, but may slightly increase CPU load due to additional compression
+# overhead.
+ACTION=="add", KERNEL=="zram[0-9]*", ATTR{recomp_algorithm}="algo=lz4 priority=1", \
+  RUN+="/sbin/sh -c echo 'type=huge' > /sys/block/%k/recompress"
+
 TEST!="/dev/zram0", GOTO="zram_end"
 
 # Since ZRAM stores all pages in compressed form in RAM, we should prefer
@@ -7,4 +13,10 @@ TEST!="/dev/zram0", GOTO="zram_end"
 # the disk.
 SYSCTL{vm.swappiness}="150"
 
+# Optimal value for games, so sets not too aggressive, but also not too weak
+# kswapd behavior, as described there:
+# https://www.reddit.com/r/linux_gaming/comments/vla9gd/comment/ie1cnrh/
+SYSCTL{vm.watermark_scale_factor}="125"
+SYSCTL{vm.watermark_boost_factor}="0"
+
 LABEL="zram_end"

etc/udev/rules.d/80-io-tweaks.rules

@@ -0,0 +1,3 @@
+# Forced I/O multithreading
+ACTION=="add|change", SUBSYSTEM=="block", ATTR{queue/rq_affinity}="1"
+ACTION=="add|change", SUBSYSTEM=="block", ATTR{queue/iosched/fifo_batch}=="32"