1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 syntax = "proto2"; 6 7 option optimize_for = LITE_RUNTIME; 8 9 package metrics; 10 11 import "perf_data.proto"; 12 13 // Protocol buffer for collected sample-based profiling data. 14 // Contains the parameters and data from a single profile collection event. 15 16 // Next tag: 9 17 message SampledProfile { 18 // Indicates the event that triggered this collection. 19 enum TriggerEvent { 20 UNKNOWN_TRIGGER_EVENT = 0; 21 22 // The profile was triggered by periodic sampling. Periodically sampled 23 // profiles are collected once per uniformly sized period interval. Within 24 // each interval, the sampled data is collected at a random time. For 25 // example, if the interval is 60 s, then data would be collected at a 26 // random point in each of the intervals [0, 60 s), [60 s, 120 s), etc. 27 PERIODIC_COLLECTION = 1; 28 29 // The profile was collected upon resume from suspend. 30 RESUME_FROM_SUSPEND = 2; 31 32 // The profile was collected upon restoring a previous session. 33 RESTORE_SESSION = 3; 34 } 35 optional TriggerEvent trigger_event = 1; 36 37 // Fields 2-3: Time durations are given in ticks, and represent system uptime 38 // rather than wall time. 39 40 // Time after system boot when the collection took place, in milliseconds. 41 optional int64 ms_after_boot = 2; 42 43 // Time after last login when the collection took place, in milliseconds. 44 optional int64 ms_after_login = 3; 45 46 // The duration for which the machine was suspended prior to collecting the 47 // sampled profile. Only set when |trigger_event| is RESUME_FROM_SUSPEND. 48 optional int64 suspend_duration_ms = 5; 49 50 // Number of milliseconds after a resume that profile was collected. Only set 51 // when |trigger_event| is RESUME_FROM_SUSPEND. 52 optional int64 ms_after_resume = 6; 53 54 // Number of tabs restored during a session restore. Only set when 55 // |trigger_event| is RESTORE_SESSION. 56 optional int32 num_tabs_restored = 7; 57 58 // Number of milliseconds after a session restore that a profile was 59 // collected. Only set when |trigger_event| is RESTORE_SESSION. 60 optional int64 ms_after_restore = 8; 61 62 // The actual perf data that was collected. 63 optional PerfDataProto perf_data = 4; 64 } 65
