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Commit a4e62033 authored by Kean Mariotti's avatar Kean Mariotti Committed by Android (Google) Code Review
Browse files

Merge "sysui: configure 512 KB perfetto shmem buffer" into main

parents 0410444a 27709754

core/java/android/tracing/flags.aconfig

+8 −0
Original line number Diff line number Diff line
@@ -71,3 +71,11 @@ flag { 
    is_fixed_read_only: true

    bug: "410517697"

}



flag {

    name: "sysui_large_perfetto_shmem_buffer"

    namespace: "windowing_tools"

    description: "Large perfetto shmem buffer in sysui"

    is_fixed_read_only: true

    bug: "420587648"

}

packages/SystemUI/src/com/android/systemui/SystemUIApplication.java

+9 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ import android.content.res.Configuration; 
import android.os.Bundle;

import android.os.Process;

import android.os.Trace;

import android.tracing.perfetto.InitArguments;

import android.util.Log;

import android.util.TimingsTraceLog;

import android.view.SurfaceControl;
@@ -84,6 +85,14 @@ public class SystemUIApplication extends Application implements 
    public SystemUIApplication() {

        super();

        if (!isSubprocess()) {

            if (android.tracing.Flags.sysuiLargePerfettoShmemBuffer()) {

                // Explicitly initialize a 512 KB shmem buffer for Perfetto producers (b/420587648).

                // This increases the Perfetto's shmem buffer from default size (256 KB) to 512 KB,

                // thus avoiding crashes or packet loss caused by shmem chunks exhaustion when too

                // many threads are tracing data.

                android.tracing.perfetto.Producer.init(new InitArguments(

                        InitArguments.PERFETTO_BACKEND_SYSTEM, 512));

            }

            Trace.registerWithPerfetto();

        }

        Log.v(TAG, "SystemUIApplication constructed.");