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Commit 07fc6676 authored by David Sehr's avatar David Sehr Committed by Michael Bestas
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Allow tuning of heaptargetutilization 

Remove a pair of explicit sets of this value.  This allows ART to tune
this parameter to improve GC responsiveness and memory usage.  Tuning
this parameter is a key area of work for OEM-requested high-memory
device configurations.

Bug: 145823510
Test: boot and run with various configurations of the flag.
Change-Id: I19680ff5fa1ebf9dfd4a3f71533d03510f4da414
Merged-In: I19680ff5fa1ebf9dfd4a3f71533d03510f4da414
(cherry picked from commit b2910d3b)
parent 9451ed8d

core/java/com/android/internal/os/RuntimeInit.java

+2 −3
Original line number Diff line number Diff line
@@ -29,8 +29,10 @@ import android.os.SystemProperties; 
import android.os.Trace;

import android.util.Log;

import android.util.Slog;



import com.android.internal.logging.AndroidConfig;

import com.android.server.NetworkManagementSocketTagger;



import dalvik.system.RuntimeHooks;

import dalvik.system.VMRuntime;

import java.lang.reflect.InvocationTargetException;
@@ -349,9 +351,6 @@ public class RuntimeInit { 
        // leftover running threads to crash before the process actually exits.

        nativeSetExitWithoutCleanup(true);



        // We want to be fairly aggressive about heap utilization, to avoid

        // holding on to a lot of memory that isn't needed.

        VMRuntime.getRuntime().setTargetHeapUtilization(0.75f);

        VMRuntime.getRuntime().setTargetSdkVersion(targetSdkVersion);



        final Arguments args = new Arguments(argv);

services/java/com/android/server/SystemServer.java

+0 −4
Original line number Diff line number Diff line
@@ -466,10 +466,6 @@ public final class SystemServer { 
            // Mmmmmm... more memory!

            VMRuntime.getRuntime().clearGrowthLimit();



            // The system server has to run all of the time, so it needs to be

            // as efficient as possible with its memory usage.

            VMRuntime.getRuntime().setTargetHeapUtilization(0.8f);



            // Some devices rely on runtime fingerprint generation, so make sure

            // we've defined it before booting further.

            Build.ensureFingerprintProperty();