From 97621e05c0bd3d09231367a0a29e673889f6fbfe Mon Sep 17 00:00:00 2001
From: Andres Morales <anmorales@google.com>
Date: Tue, 4 Nov 2014 14:56:16 -0800
Subject: [PATCH] Increase min free levels for cached processes on 64bit

Requires less memory pressure to start killing cached
processes.

Bug: 18241791
Change-Id: Ia02f5aee115535badc900330b9361f0099203e4f
---
 .../java/com/android/server/am/ProcessList.java  | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/services/core/java/com/android/server/am/ProcessList.java b/services/core/java/com/android/server/am/ProcessList.java
index 5b2225570ee27..843a0cb091670 100644
--- a/services/core/java/com/android/server/am/ProcessList.java
+++ b/services/core/java/com/android/server/am/ProcessList.java
@@ -235,22 +235,16 @@ final class ProcessList {
             Slog.i("XXXXXX", "minfree_adj=" + minfree_adj + " minfree_abs=" + minfree_abs);
         }
 
-        // We've now baked in the increase to the basic oom values above, since
-        // they seem to be useful more generally for devices that are tight on
-        // memory than just for 64 bit.  This should probably have some more
-        // tuning done, so not deleting it quite yet...
-        final boolean is64bit = false; //Build.SUPPORTED_64_BIT_ABIS.length > 0;
+        if (Build.SUPPORTED_64_BIT_ABIS.length > 0) {
+            // Increase the high min-free levels for cached processes for 64-bit
+            mOomMinFreeHigh[4] = 225000;
+            mOomMinFreeHigh[5] = 325000;
+        }
 
         for (int i=0; i<mOomAdj.length; i++) {
             int low = mOomMinFreeLow[i];
             int high = mOomMinFreeHigh[i];
             mOomMinFree[i] = (int)(low + ((high-low)*scale));
-            if (is64bit) {
-                // On 64 bit devices, we consume more baseline RAM, because 64 bit is cool!
-                // To avoid being all pagey and stuff, scale up the memory levels to
-                // give us some breathing room.
-                mOomMinFree[i] = (3*mOomMinFree[i])/2;
-            }
         }
 
         if (minfree_abs >= 0) {