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Commit 41d09b25 authored by Chitti Babu Theegala's avatar Chitti Babu Theegala Committed by Steve Kondik
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lowmemorykiller: Overwrite LMK parameters for low-tier devices 

LMK parameters calculated by default algorithm were not optimal for
low-tier devices. Values mentioned here were well tested and
evaluated w.r.t memory and performance for such setups.

Change-Id: I40ed92d204aae6e758028ea1e9bd4ec7226dbe2b

lowmemorykiller: fine-tune LMK parameters for low-tier devices

LMK parameters for low-tier devices are fine-tuned for better
concurrency. Values mentioned here were well tested and
evaluated w.r.t memory and performance for such setups.

Change-Id: I0d547f1ec84863bbaedb68d9aba1ff7aef057e42

[mikeioannina]: Adjust for 5.0

Change-Id: I258b1058d0feadbd153c0068d149db8d8b71c93f
parent 5f6a0edc

services/core/java/com/android/server/am/ProcessList.java

+13 −3
Original line number Diff line number Diff line
@@ -181,6 +181,11 @@ final class ProcessList { 
    };

    // The actual OOM killer memory levels we are using.

    private final int[] mOomMinFree = new int[mOomAdj.length];

    // Optimal OOM killer memory levels for Low-Tier devices.

    private final int[] mOomMinFreeLowRam = new int[] {

            12288, 20478, 32766,

            40962, 49152, 57342

    };



    private final long mTotalMemMb;
@@ -242,10 +247,15 @@ final class ProcessList { 
        }



        for (int i=0; i<mOomAdj.length; i++) {

            if (ActivityManager.isLowRamDeviceStatic()) {

                // Overwrite calculated LMK parameters with the low-tier tested/validated values

                mOomMinFree[i] = mOomMinFreeLowRam[i];

            } else {

                int low = mOomMinFreeLow[i];

                int high = mOomMinFreeHigh[i];

                mOomMinFree[i] = (int)(low + ((high-low)*scale));

            }

        }



        if (minfree_abs >= 0) {

            for (int i=0; i<mOomAdj.length; i++) {