protos/perfetto/metrics/android/startup_metric.proto

/*
 * Copyright (C) 2019 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";
option optimize_for = LITE_RUNTIME;

package perfetto.protos;

// Android app startup metrics.
message AndroidStartupMetric {
  // A simplified view of the task state durations for a thread
  // and a span of time.
  message TaskStateBreakdown {
    optional int64 running_dur_ns = 1;
    optional int64 runnable_dur_ns = 2;
    optional int64 uninterruptible_sleep_dur_ns = 3;
    optional int64 interruptible_sleep_dur_ns = 4;
  }

  message Slice { optional int64 dur_ns = 1; }

  // Timing information spanning the intent received by the
  // activity manager to the first frame drawn.
  // All times and durations in nanoseconds (ns).
  message ToFirstFrame {
    optional int64 dur_ns = 1;
    optional TaskStateBreakdown main_thread_by_task_state = 2;

    // In this timespan, how many processes (apart from the main activity) were
    // spawned.
    optional uint32 other_processes_spawned_count = 3;

    // Total time spent in activity manager between the initial intent
    // and the end of the activity starter.
    optional Slice time_activity_manager = 4;

    // The following slices follow the typical steps post-fork.
    optional Slice time_activity_thread_main = 5;
    optional Slice time_bind_application = 6;
    optional Slice time_activity_start = 7;
    optional Slice time_activity_resume = 8;
    optional Slice time_choreographer = 9;

    // If we are starting a new process, record the duration from the
    // intent being received to the time we call the zygote.
    optional Slice time_before_start_process = 10;

    // The actual duration of the process start (based on the zygote slice).
    optional Slice time_during_start_process = 11;

    // The ratio between the cpu time of the activity process
    // to all other processes in the system.
    optional double other_process_to_activity_cpu_ratio = 12;
  }

  // Next id: 7
  message Startup {
    // Random id uniquely identifying an app startup in this trace.
    optional uint32 startup_id = 1;

    // Name of the package launched
    optional string package_name = 2;

    // Name of the process launched
    optional string process_name = 3;

    // Did we ask the zygote for a new process
    optional bool zygote_new_process = 4;

    // Number of processes hosting the activity involved in the launch.
    // This will usually be 1. If it is 0, it is indicative of a data / process
    // error. If > 1, the process died during startup and the system respawned
    // it.
    optional uint32 activity_hosting_process_count = 6;

    optional ToFirstFrame to_first_frame = 5;
  }

  repeated Startup startup = 1;
}