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| author | Simon Shields <keepcalm444@gmail.com> | 2016-03-18 23:03:14 +1100 |
|---|---|---|
| committer | Simon Shields <keepcalm444@gmail.com> | 2016-03-19 00:18:49 +1100 |
| commit | 258dde57636ccaf8ec013915fe131aa7803e074a (patch) | |
| tree | 77dfe17fd5c974a6b1a9cfa2b2397ee3c0d071aa | |
| parent | 6eaec4905ca050b6eff728c40e81186b194a59d5 (diff) | |
| download | device_samsung_i9300-258dde57636ccaf8ec013915fe131aa7803e074a.zip device_samsung_i9300-258dde57636ccaf8ec013915fe131aa7803e074a.tar.gz device_samsung_i9300-258dde57636ccaf8ec013915fe131aa7803e074a.tar.bz2 | |
i9300: more memory tweaks
some users are seeing OOMs. Enable KSM, bump up zram and be more
aggressive about swapping.
Some of these values are taken from "Android Memory Tuning":
https://01.org/android-ia/user-guides/android-memory-tuning-android-5.0-and-5.1
Change-Id: Id950c473a5de29bb0e1e2f0a1d3602ddb982e663
| -rw-r--r-- | rootdir/fstab.smdk4x12 | 2 | ||||
| -rw-r--r-- | rootdir/init.target.rc | 16 |
2 files changed, 17 insertions, 1 deletions
diff --git a/rootdir/fstab.smdk4x12 b/rootdir/fstab.smdk4x12 index 8c2e87d..ba27ca6 100644 --- a/rootdir/fstab.smdk4x12 +++ b/rootdir/fstab.smdk4x12 @@ -20,4 +20,4 @@ /dev/block/mmcblk0p7 /modem emmc defaults recoveryonly # zram -/dev/block/zram0 none swap defaults zramsize=268435456 +/dev/block/zram0 none swap defaults zramsize=419430400 diff --git a/rootdir/init.target.rc b/rootdir/init.target.rc index d17fc69..5e4890f 100644 --- a/rootdir/init.target.rc +++ b/rootdir/init.target.rc @@ -34,6 +34,22 @@ on init chown system system /sys/devices/system/cpu/cpufreq/pegasusq/max_cpu_lock chown system system /sys/devices/system/cpu/cpufreq/pegasusq/sampling_rate +on boot + # Flash storage isn't a good entropy source, and only causes + # locking overhead in the kernel. Turn it off. + write /sys/block/mmcblk0/queue/add_random 0 + write /sys/block/mmcblk1/queue/add_random 0 + + # KSM + write /sys/kernel/mm/ksm/deferred_timer 1 + write /sys/kernel/mm/ksm/pages_to_scan 100 + write /sys/kernel/mm/ksm/sleep_millisecs 500 + write /sys/kernel/mm/ksm/run 1 + + # Swapping 1 page at a time is ok + write /proc/sys/vm/page-cluster 0 + + write /proc/sys/vm/swappiness 100 |