1/* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17syntax = "proto2"; 18 19package perfetto.protos; 20 21import "protos/perfetto/metrics/custom_options.proto"; 22 23message ChromeScrollJankV2 { 24 // Total time spent processing scroll updates. 25 optional double scroll_processing_ms = 1 [(unit) = "ms_biggerIsBetter"]; 26 // Of the total scrolling processing time, this much is considered 27 // "janky". This excludes jank caused due to 28 // `RendererCompositorQueueingDelay`, which can add nontrivial noise. 29 optional double scroll_jank_processing_ms = 2 [(unit) = "ms_smallerIsBetter"]; 30 // Computed as: `100 * scroll_jank_processing_ms / scroll_processing_ms`. 31 optional double scroll_jank_percentage = 3 [(unit) = "n%_smallerIsBetter"]; 32} 33