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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- syntax = "proto2";
- option optimize_for = LITE_RUNTIME;
- option java_package = "org.chromium.components.metrics";
- option java_outer_classname = "SampledProfileProtos";
- package metrics;
- import "call_stack_profile.proto";
- import "execution_context.proto";
- import "perf_data.proto";
- import "perf_stat.proto";
- import "system_profile.proto";
- // Protocol buffer for collected sample-based profiling data.
- // Contains the parameters and data from a single profile collection event.
- // Next tag: 21
- message SampledProfile {
- // Indicates the event that triggered this collection.
- enum TriggerEvent {
- UNKNOWN_TRIGGER_EVENT = 0;
- // The profile was triggered by periodic sampling. Periodically sampled
- // profiles are collected once per uniformly sized period interval. Within
- // each interval, the sampled data is collected at a random time. For
- // example, if the interval is 60 s, then data would be collected at a
- // random point in each of the intervals [0, 60 s), [60 s, 120 s), etc.
- PERIODIC_COLLECTION = 1;
- // The profile was collected upon resume from suspend.
- RESUME_FROM_SUSPEND = 2;
- // The profile was collected upon restoring a previous session.
- RESTORE_SESSION = 3;
- // The profile was collected at process startup.
- PROCESS_STARTUP = 4;
- // The profile was collected after jank was detected while executing a task.
- JANKY_TASK = 5;
- // The profile was collected after a thread was determined to be hung.
- THREAD_HUNG = 6;
- // The heap profile was triggered by periodic sampling. The time intervals
- // between trigger events conform to the Poisson process with certain mean
- // interval between collections.
- PERIODIC_HEAP_COLLECTION = 7;
- }
- optional TriggerEvent trigger_event = 1;
- // The process in which the profile was collected.
- optional Process process = 11;
- // The thread in which the profile was collected.
- optional Thread thread = 12;
- // Map of Chrome PIDs running on the system when the profile was collected.
- // Each Chrome PID is mapped to its process type.
- // This field and the below thread_types field assume that the PID/TID
- // information are collected in a short duration for a single session such
- // that, the PID/TID reuse is highly unlikely.
- // The information from these two fields is used to map chrome samples
- // collected for a specific PID/TID to the corresponding process type and
- // thread type.
- map<uint32, Process> process_types = 13;
- // A list of pids that belong to Lacros binaries, which are a subset of the
- // keys of the process_types above.
- repeated uint32 lacros_pids = 18 [packed = true];
- // The version string of the Lacros Chrome browser running on a CrOS machine.
- // It a 4-tuple of numbers separated by dots.
- // Note: unlike the app_version in the system_profile.proto, this does not
- // include any additional suffixes such as development build or bitness.
- // This, and lacros_channel are only populated when lacros binaries are
- // found in the running processes, i.e. when lacros_pids is not empty.
- optional string lacros_version = 19;
- // The channel of the Lacros Chrome browser running on a CrOS machine.
- optional SystemProfileProto.Channel lacros_channel = 20;
- // Map of Chrome TIDs running on the system when the profile was collected.
- // Each Chrome TID is mapped to its thread type.
- map<uint32, Thread> thread_types = 14;
- // Fields 2-3: Time durations are given in ticks, and represent system uptime
- // rather than wall time.
- // Time after system boot when the collection took place, in milliseconds.
- optional int64 ms_after_boot = 2;
- // Time after last login when the collection took place, in milliseconds.
- optional int64 ms_after_login = 3;
- // The duration for which the machine was suspended prior to collecting the
- // sampled profile. Only set when |trigger_event| is RESUME_FROM_SUSPEND.
- optional int64 suspend_duration_ms = 5;
- // Number of milliseconds after a resume that profile was collected. Only set
- // when |trigger_event| is RESUME_FROM_SUSPEND.
- optional int64 ms_after_resume = 6;
- // Number of tabs restored during a session restore. Only set when
- // |trigger_event| is RESTORE_SESSION.
- optional int32 num_tabs_restored = 7;
- // Number of milliseconds after a session restore that a profile was
- // collected. Only set when |trigger_event| is RESTORE_SESSION.
- optional int64 ms_after_restore = 8;
- // Sampled profile data collected from Linux perf tool.
- optional PerfDataProto perf_data = 4;
- // Sampled profile data collected by periodic sampling of call stacks.
- optional CallStackProfile call_stack_profile = 9;
- // Perf counter data collected using "perf stat".
- optional PerfStatProto perf_stat = 10;
- // The maximum frequency in MHz reported for each logical CPU on the device.
- // This is a repeated field, where entry 0 corresponds to core 0, entry 1 to
- // core 1, and so on. The field is optional and populated only for metrics
- // that can use the max frequency to compute a CPU utilization metric, e.g.
- // when measuring CPU cycles.
- repeated uint32 cpu_max_frequency_mhz = 15;
- // The pressure-stall information that describes the state of CPU utilization
- // of the system.
- // The percent of the time that runnable processes are delayed because the CPU
- // is unavailable, accumulated over 10 seconds.
- optional float psi_cpu_last_10s_pct = 16;
- // The percent of the time that runnable processes are delayed because the CPU
- // is unavailable, accumulated over 60 seconds.
- optional float psi_cpu_last_60s_pct = 17;
- }
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