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Commit 4b655986 authored Jun 16, 2011 by David 'Digit' Turner Committed by David 'Digit' Turner Jul 08, 2011

emulator: Enable dex-preoptimization

Backport from AOSP master.

This enables the Dex pre-optimization for emulator-specific builds.
The idea is to speed up the initial boot sequence of an SDK AVD by
avoiding the costly on-device preopt pass that is performed otherwise
the first time the AVD is launched.

Benchmarking shows reductions in first boot time from 1m30s to 40s
on a 2.4GHz Xeon when emulating the AOSP master ToT.

Change-Id: Ibf5ebe68aa4d363c9df05d2ffe7cb828ef99f922
Orig-Change-Id: I67a9ce9791220c202817864c6e83dc8fd9cbc027

parent 3248bb2e

target/board/generic/BoardConfig.mk

+6 −0

Original line number	Diff line number	Diff line
		@@ -27,3 +27,9 @@ BOARD_USES_GENERIC_AUDIO := true

		# no hardware camera
		USE_CAMERA_STUB := true

		# Enable dex-preoptimization to speed up the first boot sequence
		# of an SDK AVD. Note that this operation only works on Linux for now
		ifeq ($(HOST_OS),linux)
		WITH_DEXPREOPT := true
		endif

target/board/generic_x86/BoardConfig.mk

+5 −0

Original line number	Diff line number	Diff line
		@@ -21,3 +21,8 @@ USE_CAMERA_STUB := true
		# Set /system/bin/sh to mksh, not ash, to test the transition.
		TARGET_SHELL := mksh

		# Enable dex-preoptimization to speed up the first boot sequence
		# of an SDK AVD. Note that this operation only works on Linux for now
		ifeq ($(HOST_OS),linux)
		WITH_DEXPREOPT := true
		endif