commit 0f03a01ca328b354e812751b2b307f244fcc463b
author Andreas Gampe <agampe@google.com> Mon May 09 14:26:07 2016 -0700
committer Andreas Gampe <agampe@google.com> Mon May 09 21:05:12 2016 -0700
tree 9838568148a79eacb389ded1c56dd27f9508f715
parent beb01ff8746bb3b16359f420e78bbd96026c61fb

Frameworks/base: Make profile buffer adjustable

Add a debug system property to change the profile buffer size.

Bug: 26877591
Change-Id: Idd13f2bc6563fd88daadd1d6679f3243dab1a0ef

core/java/android/app/ActivityThread.java

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index cf2ef45..9383394 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -557,8 +557,9 @@
                 return;
             }
             try {
+                int bufferSize = SystemProperties.getInt("debug.traceview-buffer-size-in-mb", 8);
                 VMDebug.startMethodTracing(profileFile, profileFd.getFileDescriptor(),
-                        8 * 1024 * 1024, 0, samplingInterval != 0, samplingInterval);
+                        bufferSize * 1024 * 1024, 0, samplingInterval != 0, samplingInterval);
                 profiling = true;
             } catch (RuntimeException e) {
                 Slog.w(TAG, "Profiling failed on path " + profileFile);