Low RAM tweaks

Misc/Features/Low_RAM.txt

@@ -0,0 +1,21 @@
+What changes does low_ram make?
+
+- Multiple users support is disabled
+- Split screen is disabled
+- Some smaller animations are disabled
+- SystemUI: In Recents, apps do not overlay and have lower resolution previews
+- SystemUI: In Recents, the 'Clear all' button is at the very bottom and always visible
+
+- Launcher3/Trebuchet: Some extra accents are disabled
+- Contacts/Dialer/Email: Icon cache is altered
+- Documents: 
+- Settings: Many settings are hidden
+
+- Signal/Silence: Max resolution for MMS image size reduction is lower
+- Muzei: Blur isn't as aggressive by default
+
+
+How much RAM is saved?
+	- Under 15.1 after boot settles
+		- mako: ~370MB -> ~310MB used by system
+		- d852: ~850MB -> ~680MB

Patches/Common/android_build/lowram.mk

@@ -14,7 +14,7 @@
 # limitations under the License.
 #
 
-# Sets Android Go recommended default values for propreties.
+# Changes various properties to reduce memory usage even on devices with 1GB+ RAM
 
 # Set lowram options
 PRODUCT_PROPERTY_OVERRIDES += \
@@ -24,14 +24,13 @@ PRODUCT_PROPERTY_OVERRIDES += \
      config.disable_atlas=true \
      persist.sys.use_16bpp_alpha=1
 
+# set threshold to filter unused apps
+PRODUCT_PROPERTY_OVERRIDES += \
+     pm.dexopt.downgrade_after_inactive_days=14
+
 # Speed profile services and wifi-service to reduce RAM and storage.
 PRODUCT_SYSTEM_SERVER_COMPILER_FILTER := speed-profile
 
 # Always preopt extracted APKs to prevent extracting out of the APK for gms
 # modules.
 PRODUCT_ALWAYS_PREOPT_EXTRACTED_APK := true
-
-# Default heap sizes. Allow up to 256m for large heaps to make sure a single app
-# doesn't take all of the RAM.
-PRODUCT_PROPERTY_OVERRIDES += dalvik.vm.heapgrowthlimit=128m
-PRODUCT_PROPERTY_OVERRIDES += dalvik.vm.heapsize=256m

Patches/LineageOS-14.1/android_device_asus_grouper/0002-Perf_Tweaks.patch

@@ -1,18 +1,18 @@
-From 08c7e33d75eb9c8546db621e6ca28bd9ca922402 Mon Sep 17 00:00:00 2001
+From 74a903c4ee34bb0ab058a749789805f765479a1e Mon Sep 17 00:00:00 2001
 From: Tad <tad@spotco.us>
-Date: Tue, 10 Jul 2018 19:38:55 -0400
+Date: Wed, 11 Jul 2018 13:54:10 -0400
 Subject: [PATCH] Performance tweaks from @AndDiSa
 
-Change-Id: I481bd5ac610247cdcae1af42620a36ca5943505e
+Change-Id: I87e7b700b3caf713e98bcfdc74613da23139db70
 ---
- BoardConfigCommon.mk                          |  4 ++
+ BoardConfigCommon.mk                          |  3 ++
  device.mk                                     |  3 +-
- .../base/core/res/res/values/config.xml       |  7 ++++
- system.prop                                   | 39 +++++++++++++++++--
- 4 files changed, 49 insertions(+), 4 deletions(-)
+ .../base/core/res/res/values/config.xml       |  7 +++++
+ system.prop                                   | 29 +++++++++++++++++--
+ 4 files changed, 38 insertions(+), 4 deletions(-)
 
 diff --git a/BoardConfigCommon.mk b/BoardConfigCommon.mk
-index f402c86..2ea1317 100644
+index f402c86..c84be43 100644
 --- a/BoardConfigCommon.mk
 +++ b/BoardConfigCommon.mk
 @@ -20,6 +20,9 @@ TARGET_ARCH := arm
@@ -25,14 +25,6 @@ index f402c86..2ea1317 100644
  TARGET_BOOTLOADER_BOARD_NAME := grouper
  
  # Filesystem
-@@ -52,6 +55,7 @@ BOARD_SYSTEMIMAGE_JOURNAL_SIZE := 0
- 
- # Only pre-optimize the boot image
- WITH_DEXPREOPT_BOOT_IMG_ONLY := true
-+PRODUCT_SYSTEM_SERVER_COMPILER_FILTER := speed-profile
- 
- # Configure jemalloc for low-memory
- MALLOC_SVELTE := true
 diff --git a/device.mk b/device.mk
 index 33c1fc9..8d8c65a 100644
 --- a/device.mk
@@ -64,10 +56,10 @@ index d28e4fb..c9ec73a 100644
 +
  </resources>
 diff --git a/system.prop b/system.prop
-index b1d9807..7f540b5 100644
+index b1d9807..1f31c09 100644
 --- a/system.prop
 +++ b/system.prop
-@@ -12,6 +12,39 @@ ro.sf.lcd_density=213
+@@ -12,6 +12,29 @@ ro.sf.lcd_density=213
  # Wi-Fi
  wifi.interface=wlan0
  
@@ -83,7 +75,6 @@ index b1d9807..7f540b5 100644
 +ro.zygote.disable_gl_preload=true
 +
 +#perf tweaks
-+config.disable_atlas=true
 +dalvik.vm.dex2oat-flags=--no-watch-dog
 +dalvik.vm.dex2oat-swap=true
 +debug.hwui.render_dirty_regions=false
@@ -100,16 +91,7 @@ index b1d9807..7f540b5 100644
 +ro.sys.fw.trim_cache_percent=70
 +ro.sys.fw.trim_empty_percent=70
 +ro.sys.fw.use_trim_settings=true
-+
-+#go
-+dalvik.vm.heapgrowthlimit=128m
-+dalvik.vm.heapsize=256m
 +dalvik.vm.madvise-random=true
-+pm.dexopt.downgrade_after_inactive_days=10
-+pm.dexopt.shared=quicken
-+ro.config.low_ram=true
-+ro.lmk.critical_upgrade=true
-+ro.lmk.upgrade_pressure=40
 -- 
 2.18.0
 

Scripts/LineageOS-14.1/Patch.sh

@@ -68,7 +68,7 @@ patch -p1 < "$DOS_PATCHES/android_build/0001-Automated_Build_Signing.patch"; #Au
 sed -i 's/messaging/Silence/' target/product/*.mk; #Replace AOSP Messaging app with Silence
 sed -i 's/ro.secure=0/ro.secure=1/' core/main.mk;
 #sed -i 's/ro.adb.secure=0/ro.adb.secure=1/' core/main.mk;
-cp "$DOS_PATCHES/android_build/lowram.mk" target/product/lowram.mk;
+cp "$DOS_PATCHES_COMMON/android_build/lowram.mk" target/product/lowram.mk;
 
 enterAndClear "device/qcom/sepolicy";
 patch -p1 < "$DOS_PATCHES/android_device_qcom_sepolicy/0001-Camera_Fix.patch"; #Fix camera on user builds XXX: REMOVE THIS TRASH
@@ -233,6 +233,7 @@ sed -i 's/,encryptable=footer//' rootdir/etc/fstab.qcom; #Using footer will brea
 #XXX: If not used with a supported recovery, it'll be thrown into a bootloop, don't worry just 'fastboot erase misc' and reboot
 #echo "/dev/block/platform/msm_sdcc.1/by-name/misc /misc emmc defaults defaults" >> rootdir/etc/fstab.qcom; #Add the misc (mmcblk0p5) partition for recovery flags
 
+enableLowRam "device/asus/grouper";
 enterAndClear "device/asus/grouper";
 patch -p1 < "$DOS_PATCHES/android_device_asus_grouper/0001-Update_Blobs.patch";
 patch -p1 < "$DOS_PATCHES/android_device_asus_grouper/0002-Perf_Tweaks.patch";

Scripts/LineageOS-15.1/Functions.sh

@@ -124,7 +124,8 @@ export -f enableDexPreOptFull;
 
 enableLowRam() {
 	cd "$DOS_BUILD_BASE$1";
-	if [ -f lineage.mk ]; then echo '$(call inherit-product, $(SRC_TARGET_DIR)/product/go_defaults.mk)' >> lineage.mk; fi;
+	#if [ -f lineage.mk ]; then echo '$(call inherit-product, $(SRC_TARGET_DIR)/product/go_defaults.mk)' >> lineage.mk; fi;
+	if [ -f lineage.mk ]; then echo '$(call inherit-product, $(SRC_TARGET_DIR)/product/lowram.mk)' >> lineage.mk; fi;
 	if [ -f BoardConfig.mk ]; then echo 'MALLOC_SVELTE := true' >> BoardConfig.mk; fi;
 	if [ -f BoardConfigCommon.mk ]; then echo 'MALLOC_SVELTE := true' >> BoardConfigCommon.mk; fi;
 	echo "Enabled lowram for $1";

Scripts/LineageOS-15.1/Patch.sh

@@ -67,6 +67,7 @@ awk -i inplace '!/PRODUCT_EXTRA_RECOVERY_KEYS/' core/product.mk;
 sed -i 's/messaging/Silence/' target/product/*.mk; #Replace AOSP Messaging app with Silence
 sed -i 's/ro.secure=0/ro.secure=1/' core/main.mk;
 #sed -i 's/ro.adb.secure=0/ro.adb.secure=1/' core/main.mk;
+cp "$DOS_PATCHES_COMMON/android_build/lowram.mk" target/product/lowram.mk;
 
 enterAndClear "device/lineage/sepolicy";
 git revert c9b0d95630b82cd0ad1a0fc633c6d59c2cb8aad7 37422f7df389f3ae5a34ee3d6dd9354217f9c536; #neverallow violation

Scripts/init.sh

@@ -37,7 +37,7 @@ export DOS_MICROG_INCLUDED="NLP"; #Determines inclusion of microG. Options: NONE
 export DOS_HOSTS_BLOCKING=true; #Switch to false to prevent inclusion of our HOSTS file
 export DOS_HOSTS_BLOCKING_LIST="https://divestos.xyz/hosts"; #Must be in the format "127.0.0.1 bad.domain.tld"
 export DOS_OVERCLOCKS_ENABLED=true; #Switch to false to disable overclocks
-export DOS_LOWRAM_ENABLED=false; #Switch to true to enable lowram/Go configuration on all devices
+export DOS_LOWRAM_ENABLED=false; #Switch to true to enable low_ram on all devices
 export DOS_STRONG_ENCRYPTION_ENABLED=false; #Switch to true to enable AES-256bit encryption XXX: THIS WILL **DESTROY** EXISTING INSTALLS!
 export DOS_NON_COMMERCIAL_USE_PATCHES=false; #Switch to false to prevent inclusion of non-commercial use patches