drgreen/android_frameworks_base
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Allow tuning of heaptargetutilization

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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 b2910d3b6ff282194a4fa4e6c6818c4325168a4f)
This commit is contained in:
David Sehr 2019-12-06 13:03:29 -08:00
parent 18fa446f44
commit a494449297
2 changed files with 2 additions and 7 deletions
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5
core/java/com/android/internal/os/RuntimeInit.java
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@ -30,8 +30,10 @@ 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;
@ -374,9 +376,6 @@ 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);

4
services/java/com/android/server/SystemServer.java
View File

@ -441,10 +441,6 @@ 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();