core/proto/android/service/graphicsstats.proto

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

syntax = "proto2";
package android.service;

option java_multiple_files = true;
option java_outer_classname = "GraphicsStatsServiceProto";

message GraphicsStatsServiceDumpProto {
    repeated GraphicsStatsProto stats = 1;
}

message GraphicsStatsProto {

    // The package name of the app
    optional string package_name = 1;

    // The version code of the app
    optional int64 version_code = 2;

    // The start & end timestamps in UTC as
    // milliseconds since January 1, 1970
    // Compatible with java.util.Date#setTime()
    optional int64 stats_start = 3;
    optional int64 stats_end = 4;

    // The aggregated statistics for the package
    optional GraphicsStatsJankSummaryProto summary = 5;

    // The frame time histogram for the package
    repeated GraphicsStatsHistogramBucketProto histogram = 6;
}

message GraphicsStatsJankSummaryProto {
    // Distinct frame count.
    optional int32 total_frames = 1;

    // Number of frames with slow render time. Frames are considered janky if
    // they took more than a vsync interval (typically 16.667ms) to be rendered.
    optional int32 janky_frames = 2;

    // Number of "missed vsync" events.
    optional int32 missed_vsync_count = 3;

    // Number of frames in triple-buffering scenario (high input latency)
    optional int32 high_input_latency_count = 4;

    // Number of "slow UI thread" events.
    optional int32 slow_ui_thread_count = 5;

    // Number of "slow bitmap upload" events.
    optional int32 slow_bitmap_upload_count = 6;

    // Number of "slow draw" events.
    optional int32 slow_draw_count = 7;

    // Number of frames that missed their deadline (aka, visibly janked)
    optional int32 missed_deadline_count = 8;
}

message GraphicsStatsHistogramBucketProto {
    // Lower bound of render time in milliseconds.
    optional int32 render_millis = 1;
    // Number of frames in the bucket.
    optional int32 frame_count = 2;
}