xref: /frameworks/native/services/surfaceflinger/TimeStats/timestatsatomsproto/timestats_atoms.proto

/*
 * Copyright 2021 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 android.surfaceflinger;

// This is a copy of surfaceflinger's atoms from frameworks/proto_logging/stats/atoms.proto.
// Pulled atoms for surfaceflinger must be routed through system server since surfaceflinger is
// in the bootstrap namespace. This copy is used to pass the atoms as protos to system server using
// proto lite to serialize/deserialize the atoms.

// These wrappers are so that we can pass a List<Atom> as a single byte string.
// They are not in atoms.proto
message SurfaceflingerStatsGlobalInfoWrapper {
    repeated SurfaceflingerStatsGlobalInfo atom = 1;
}

message SurfaceflingerStatsLayerInfoWrapper {
    repeated SurfaceflingerStatsLayerInfo atom = 1;
}

/**
 * Global display pipeline metrics reported by SurfaceFlinger.
 * Metrics exist beginning in Android 11.
 * Pulled from:
 *    frameworks/native/services/surfaceflinger/TimeStats/TimeStats.cpp
 */
message SurfaceflingerStatsGlobalInfo {
    // Aggregated refresh rate buckets that layers were presenting at. Buckets
    // are defined in SurfaceFlinger and are tracked per device.
    // Introduced in Android 12.
    // This is intended to be used as a dimenstion in collecting per-refresh rate
    // jank statistics.
    optional int32 display_refresh_rate_bucket = 18;
    // Aggregated render rate buckets that layers were overridden to run at.
    // Buckets are defined in SurfaceFlinger and are tracked per device.
    // Introduced in Android 12.
    // This is intended to be used as a dimension in collecting per-render rate
    // jank statistics.
    optional int32 render_rate_bucket = 21;
    // Total number of frames presented during the tracing period
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional int64 total_frames = 1;
    // Total number of frames missed
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional int64 missed_frames = 2;
    // Total number of frames that fell back to client composition
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional int64 client_composition_frames = 3;
    // Total time the display was turned on
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional int64 display_on_millis = 4;
    // Total time that was spent performing animations.
    // This is derived from the present-to-present layer histogram.
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional int64 animation_millis = 5;
    // Total number of event connections tracked by SurfaceFlinger at the time
    // of this pull. If this number grows prohibitively large, then this can
    // cause jank due to resource contention.
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional int32 event_connection_count = 6;
    // Set of timings measured from when SurfaceFlinger began compositing a
    // frame, until the frame was requested to be presented to the display. This
    // measures SurfaceFlinger's total CPU walltime on the critical path per
    // frame.
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional FrameTimingHistogram frame_duration = 7;
    // Set of timings measured from when SurfaceFlinger first began using the
    // GPU to composite a frame, until the GPU has finished compositing that
    // frame. This measures the total additional time SurfaceFlinger needed to
    // perform due to falling back into GPU composition.
    // Note: This stat is not sliced by dimension. It will be duplicated for metrics
    // using render_rate_bucket as a dimension.
    optional FrameTimingHistogram render_engine_timing = 8;
    // Number of frames where SF saw a frame, based on its frame timeline.
    // Frame timelines may include transactions without updating buffer contents.
    // Introduced in Android 12.
    optional int32 total_timeline_frames = 9;
    // Number of frames where SF saw a janky frame.
    // Introduced in Android 12.
    optional int32 total_janky_frames = 10;
    // Number of janky frames where SF spent a long time on the CPU.
    // Introduced in Android 12.
    optional int32 total_janky_frames_with_long_cpu = 11;
    // Number of janky frames where SF spent a long time on the GPU.
    // Introduced in Android 12.
    optional int32 total_janky_frames_with_long_gpu = 12;
    // Number of janky frames where SF missed the frame deadline, but there
    // was not an attributed reason (e.g., maybe HWC missed?)
    // Introduced in Android 12.
    optional int32 total_janky_frames_sf_unattributed = 13;
    // Number of janky frames where the app missed the frame deadline, but
    // there was not an attributed reason
    // Introduced in Android 12.
    optional int32 total_janky_frames_app_unattributed = 14;
    // Number of janky frames that were caused because of scheduling errors in
    // SF that resulted in early present (e.g., SF sending a buffer to the
    // composition engine earlier than expected, resulting in a present that is
    // one vsync early)
    // Introduced in Android 12.
    optional int32 total_janky_frames_sf_scheduling = 15;
    // Number of frames that were classified as jank because of possible drift in
    // vsync predictions.
    // Introduced in Android 12.
    optional int32 total_jank_frames_sf_prediction_error = 16;
    // Number of janky frames where the app was in a buffer stuffed state (more
    // than one buffer ready to be presented at the same vsync). Usually caused
    // when the first frame is unusually long, the following frames enter into a
    // stuffed state.
    // Introduced in Android 12.
    optional int32 total_jank_frames_app_buffer_stuffing = 17;
    // Buckets of timings in ms by which SurfaceFlinger's deadline was missed
    // while latching and presenting frames.
    // Introduced in Android 12.
    optional FrameTimingHistogram sf_deadline_misses = 19;
    // Buckets of timings in ms by which the Vsync prediction drifted, when
    // compared to the actual hardware vsync.
    // Introduced in Android 12.
    optional FrameTimingHistogram sf_prediction_errors = 20;

    // Next ID: 22
}

/**
 * Per-layer display pipeline metrics reported by SurfaceFlinger.
 * Metrics exist beginning in Android 11.
 * The number of layers uploaded may be restricted due to size limitations.
 * Pulled from:
 *    frameworks/native/services/surfaceflinger/TimeStats/TimeStats.cpp
 */
message SurfaceflingerStatsLayerInfo {
    // UID of the application who submitted this layer for presentation
    // This is intended to be used as a dimension for surfacing rendering
    // statistics to applications.
    // Introduced in Android 12.
    optional int32 uid = 12;
    // Refresh rate bucket that the layer was presenting at. Buckets are
    // defined in SurfaceFlinger and are tracked per device.
    // Introduced in Android 12.
    // This is intended to be used as a dimension in collecting per-refresh rate
    // jank statistics
    optional int32 display_refresh_rate_bucket = 22;
    // Render rate bucket that the layer was submitting frames at. Buckets are
    // defined in SurfaceFlinger and are tracked per device.
    // Introduced in Android 12.
    // This is intended to be used as a dimension in collecting per-render rate
    // jank statistics.
    optional int32 render_rate_bucket = 23;

    enum GameMode {
         GAME_MODE_UNSPECIFIED = 0;
         GAME_MODE_UNSUPPORTED = 1;
         GAME_MODE_STANDARD = 2;
         GAME_MODE_PERFORMANCE = 3;
         GAME_MODE_BATTERY = 4;
    }

    // Game mode that the layer was running at. Used to track user engagement
    // in different modes. The modes are defined in GameManager.java
    // Game modes are used only for integrating with GameManager. All non-game
    // layers will have this field set to UNSUPPORTED.
    // Introduced in Android 12
    // This is intended to be used as a dimension in collecting per-game mode
    // fps and frame related metrics.
    optional GameMode game_mode = 26;
    // The layer for this set of metrics
    // In many scenarios the package name is included in the layer name, e.g.,
    // layers created by Window Manager. But this is not a guarantee - in the
    // general case layer names are arbitrary debug names.
    optional string layer_name = 1;
    // Total number of frames presented
    optional int64 total_frames = 2;
    // Total number of dropped frames while latching a buffer for this layer.
    optional int64 dropped_frames = 3;
    // Set of timings measured between successive presentation timestamps.
    optional FrameTimingHistogram present_to_present = 4;
    // Set of timings measured from when an app queued a buffer for
    // presentation, until the buffer was actually presented to the
    // display.
    optional FrameTimingHistogram post_to_present = 5;
    // Set of timings measured from when a buffer is ready to be presented,
    // until the buffer was actually presented to the display.
    optional FrameTimingHistogram acquire_to_present = 6;
    // Set of timings measured from when a buffer was latched by
    // SurfaceFlinger, until the buffer was presented to the display
    optional FrameTimingHistogram latch_to_present = 7;
    // Set of timings measured from the desired presentation to the actual
    // presentation time
    optional FrameTimingHistogram desired_to_present = 8;
    // Set of timings measured from when an app queued a buffer for
    // presentation, until the buffer was ready to be presented.
    optional FrameTimingHistogram post_to_acquire = 9;
    // Frames missed latch because the acquire fence didn't fire
    optional int64 late_acquire_frames = 10;
    // Frames latched early because the desired present time was bad
    optional int64 bad_desired_present_frames = 11;
    // Number of frames where SF saw a frame, based on its frame timeline.
    // Frame timelines may include transactions without updating buffer contents.
    // Introduced in Android 12.
    optional int32 total_timeline_frames = 13;
    // Number of frames where SF saw a janky frame.
    // Introduced in Android 12.
    optional int32 total_janky_frames = 14;
    // Number of janky frames where SF spent a long time on the CPU.
    // Introduced in Android 12.
    optional int32 total_janky_frames_with_long_cpu = 15;
    // Number of janky frames where SF spent a long time on the GPU.
    // Introduced in Android 12.
    optional int32 total_janky_frames_with_long_gpu = 16;
    // Number of janky frames where SF missed the frame deadline, but there
    // was not an attributed reason (e.g., maybe HWC missed?)
    // Introduced in Android 12.
    optional int32 total_janky_frames_sf_unattributed = 17;
    // Number of janky frames where the app missed the frame deadline, but
    // there was not an attributed reason
    // Introduced in Android 12.
    optional int32 total_janky_frames_app_unattributed = 18;
    // Number of janky frames that were caused because of scheduling errors in
    // SF that resulted in early present (e.g., SF sending a buffer to the
    // composition engine earlier than expected, resulting in a present that is
    // one vsync early)
    // Introduced in Android 12.
    optional int32 total_janky_frames_sf_scheduling = 19;
    // Number of frames that were classified as jank because of possible drift in
    // vsync predictions.
    // Introduced in Android 12.
    optional int32 total_jank_frames_sf_prediction_error = 20;
    // Number of janky frames where the app was in a buffer stuffed state (more
    // than one buffer ready to be presented at the same vsync). Usually caused
    // when the first frame is unusually long, the following frames enter into a
    // stuffed state.
    // Introduced in Android 12.
    optional int32 total_jank_frames_app_buffer_stuffing = 21;

    /**
     * Encapsulates the FrameRateVote information sent by the application while
     * calling setFrameRate.
     * Metrics exist beginning in Android 12.
     */
    message SetFrameRateVote {
        // The desired frame rate the application wishes to run on.
        optional float frame_rate = 1;

        enum FrameRateCompatibility {
            FRAME_RATE_UNDEFINED = 0;
            FRAME_RATE_DEFAULT = 1;
            FRAME_RATE_EXACT_OR_MULTIPLE = 2;
        }

        // Specifies how to interpret the frame rate associated with the layer.
        // Defined in Layer.h
        optional FrameRateCompatibility frame_rate_compatibility = 2;

        enum Seamlessness {
            SEAMLESS_UNDEFINED = 0;
            SEAMLESS_SHOULD_BE_SEAMLESS = 1;
            SEAMLESS_NOT_REQUIRED = 2;
        }
        // Indicates whether seamless refresh rate switch is required or not.
        optional Seamlessness seamlessness = 3;
    }

    // The last frame rate vote set by the application.
    // Introduced in Android 12.
    optional SetFrameRateVote set_frame_rate_vote = 24;
    // Buckets of timings in ms by which the app deadline was missed while
    // submitting work for a frame.
    // Introduced in Android 12.
    optional FrameTimingHistogram app_deadline_misses = 25;

    // Next ID: 27
}

/**
 * Histogram of frame counts bucketed by time in milliseconds.
 * Because of size limitations, we hard-cap the number of buckets, with
 * buckets for corresponding to larger milliseconds being less precise.
 */
message FrameTimingHistogram {
    // Timings in milliseconds that describes a set of histogram buckets
    repeated int32 time_millis_buckets = 1;
    // Number of frames that match to each time_millis, i.e. the bucket
    // contents
    // It's required that len(time_millis) == len(frame_count)
    repeated int64 frame_counts = 2;
}