Commit 8db41c5c authored Dec 17, 2014 by Varad Deshmukh Committed by Steve Kondik Mar 21, 2015

Delay Explicit GC from the SystemServer.

Binder activity as part of the System Server executes an Explicit
GC every 200 Binder references. Such Binder activity is significant
during the application launch of some Google Apps like Music.
The resulting pause due to the GC pauses the main application, affecting
launch time.

This change detects an app launch, and delays the incoming GC by
3 seconds. The API for GC delay can be calllable for different use-cases.
This change deals with only the application launch.

CRs-Fixed: 779174

Change-Id: I0f2dfaf3cb13940c77df8a6fefc2cbc0c76e027c

parent e0875874

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

+4 −0

Original line number	Diff line number	Diff line
		@@ -2728,6 +2728,10 @@ public final class ActivityStackSupervisor implements DisplayListener {
		BinderInternal.modifyDelayedGcParams();

		mPm.cpuBoost(2000 * 1000);

		/* Delay Binder Explicit GC during application launch */
		BinderInternal.modifyDelayedGcParams();

		if (DEBUG_TASKS) Slog.d(TAG, "No task found");
		return null;
		}