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/*
* Copyright (C) 2017 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.
*/
#include "timestatsproto/TimeStatsHelper.h"
#include <android-base/stringprintf.h>
#include <inttypes.h>
#include <array>
#define HISTOGRAM_SIZE 85
using android::base::StringAppendF;
using android::base::StringPrintf;
namespace android {
namespace surfaceflinger {
// Time buckets for histogram, the calculated time deltas will be lower bounded
// to the buckets in this array.
static const std::array<int32_t, HISTOGRAM_SIZE> histogramConfig =
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 36, 38, 40, 42, 44, 46, 48, 50, 54, 58, 62, 66, 70, 74, 78, 82,
86, 90, 94, 98, 102, 106, 110, 114, 118, 122, 126, 130, 134, 138, 142, 146, 150,
200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000};
void TimeStatsHelper::Histogram::insert(int32_t delta) {
if (delta < 0) return;
// std::lower_bound won't work on out of range values
if (delta > histogramConfig[HISTOGRAM_SIZE - 1]) {
hist[histogramConfig[HISTOGRAM_SIZE - 1]] += delta / histogramConfig[HISTOGRAM_SIZE - 1];
return;
}
auto iter = std::lower_bound(histogramConfig.begin(), histogramConfig.end(), delta);
hist[*iter]++;
}
int64_t TimeStatsHelper::Histogram::totalTime() const {
int64_t ret = 0;
for (const auto& ele : hist) {
ret += ele.first * ele.second;
}
return ret;
}
float TimeStatsHelper::Histogram::averageTime() const {
int64_t ret = 0;
int64_t count = 0;
for (const auto& ele : hist) {
count += ele.second;
ret += ele.first * ele.second;
}
return static_cast<float>(ret) / count;
}
std::string TimeStatsHelper::Histogram::toString() const {
std::string result;
for (int32_t i = 0; i < HISTOGRAM_SIZE; ++i) {
int32_t bucket = histogramConfig[i];
int32_t count = (hist.count(bucket) == 0) ? 0 : hist.at(bucket);
StringAppendF(&result, "%dms=%d ", bucket, count);
}
result.back() = '\n';
return result;
}
std::string TimeStatsHelper::TimeStatsLayer::toString() const {
std::string result = "\n";
StringAppendF(&result, "layerName = %s\n", layerName.c_str());
StringAppendF(&result, "packageName = %s\n", packageName.c_str());
StringAppendF(&result, "totalFrames = %d\n", totalFrames);
StringAppendF(&result, "droppedFrames = %d\n", droppedFrames);
StringAppendF(&result, "lateAcquireFrames = %d\n", lateAcquireFrames);
StringAppendF(&result, "badDesiredPresentFrames = %d\n", badDesiredPresentFrames);
const auto iter = deltas.find("present2present");
if (iter != deltas.end()) {
const float averageTime = iter->second.averageTime();
const float averageFPS = averageTime < 1.0f ? 0.0f : 1000.0f / averageTime;
StringAppendF(&result, "averageFPS = %.3f\n", averageFPS);
}
for (const auto& ele : deltas) {
StringAppendF(&result, "%s histogram is as below:\n", ele.first.c_str());
result.append(ele.second.toString());
}
return result;
}
std::string TimeStatsHelper::TimeStatsGlobal::toString(std::optional<uint32_t> maxLayers) const {
std::string result = "SurfaceFlinger TimeStats:\n";
StringAppendF(&result, "statsStart = %" PRId64 "\n", statsStart);
StringAppendF(&result, "statsEnd = %" PRId64 "\n", statsEnd);
StringAppendF(&result, "totalFrames = %d\n", totalFrames);
StringAppendF(&result, "missedFrames = %d\n", missedFrames);
StringAppendF(&result, "clientCompositionFrames = %d\n", clientCompositionFrames);
StringAppendF(&result, "clientCompositionReusedFrames = %d\n", clientCompositionReusedFrames);
StringAppendF(&result, "refreshRateSwitches = %d\n", refreshRateSwitches);
StringAppendF(&result, "compositionStrategyChanges = %d\n", compositionStrategyChanges);
StringAppendF(&result, "displayOnTime = %" PRId64 " ms\n", displayOnTime);
StringAppendF(&result, "displayConfigStats is as below:\n");
for (const auto& [fps, duration] : refreshRateStats) {
StringAppendF(&result, "%dfps=%ldms ", fps, ns2ms(duration));
}
result.back() = '\n';
StringAppendF(&result, "totalP2PTime = %" PRId64 " ms\n", presentToPresent.totalTime());
StringAppendF(&result, "presentToPresent histogram is as below:\n");
result.append(presentToPresent.toString());
const float averageFrameDuration = frameDuration.averageTime();
StringAppendF(&result, "averageFrameDuration = %.3f ms\n",
std::isnan(averageFrameDuration) ? 0.0f : averageFrameDuration);
StringAppendF(&result, "frameDuration histogram is as below:\n");
result.append(frameDuration.toString());
const float averageRenderEngineTiming = renderEngineTiming.averageTime();
StringAppendF(&result, "averageRenderEngineTiming = %.3f ms\n",
std::isnan(averageRenderEngineTiming) ? 0.0f : averageRenderEngineTiming);
StringAppendF(&result, "renderEngineTiming histogram is as below:\n");
result.append(renderEngineTiming.toString());
const auto dumpStats = generateDumpStats(maxLayers);
for (const auto& ele : dumpStats) {
result.append(ele->toString());
}
return result;
}
SFTimeStatsLayerProto TimeStatsHelper::TimeStatsLayer::toProto() const {
SFTimeStatsLayerProto layerProto;
layerProto.set_layer_name(layerName);
layerProto.set_package_name(packageName);
layerProto.set_total_frames(totalFrames);
layerProto.set_dropped_frames(droppedFrames);
for (const auto& ele : deltas) {
SFTimeStatsDeltaProto* deltaProto = layerProto.add_deltas();
deltaProto->set_delta_name(ele.first);
for (const auto& histEle : ele.second.hist) {
SFTimeStatsHistogramBucketProto* histProto = deltaProto->add_histograms();
histProto->set_time_millis(histEle.first);
histProto->set_frame_count(histEle.second);
}
}
return layerProto;
}
SFTimeStatsGlobalProto TimeStatsHelper::TimeStatsGlobal::toProto(
std::optional<uint32_t> maxLayers) const {
SFTimeStatsGlobalProto globalProto;
globalProto.set_stats_start(statsStart);
globalProto.set_stats_end(statsEnd);
globalProto.set_total_frames(totalFrames);
globalProto.set_missed_frames(missedFrames);
globalProto.set_client_composition_frames(clientCompositionFrames);
globalProto.set_display_on_time(displayOnTime);
for (const auto& ele : refreshRateStats) {
SFTimeStatsDisplayConfigBucketProto* configBucketProto =
globalProto.add_display_config_stats();
SFTimeStatsDisplayConfigProto* configProto = configBucketProto->mutable_config();
configProto->set_fps(ele.first);
configBucketProto->set_duration_millis(ns2ms(ele.second));
}
for (const auto& histEle : presentToPresent.hist) {
SFTimeStatsHistogramBucketProto* histProto = globalProto.add_present_to_present();
histProto->set_time_millis(histEle.first);
histProto->set_frame_count(histEle.second);
}
for (const auto& histEle : frameDuration.hist) {
SFTimeStatsHistogramBucketProto* histProto = globalProto.add_frame_duration();
histProto->set_time_millis(histEle.first);
histProto->set_frame_count(histEle.second);
}
for (const auto& histEle : renderEngineTiming.hist) {
SFTimeStatsHistogramBucketProto* histProto = globalProto.add_render_engine_timing();
histProto->set_time_millis(histEle.first);
histProto->set_frame_count(histEle.second);
}
const auto dumpStats = generateDumpStats(maxLayers);
for (const auto& ele : dumpStats) {
SFTimeStatsLayerProto* layerProto = globalProto.add_stats();
layerProto->CopyFrom(ele->toProto());
}
return globalProto;
}
std::vector<TimeStatsHelper::TimeStatsLayer const*>
TimeStatsHelper::TimeStatsGlobal::generateDumpStats(std::optional<uint32_t> maxLayers) const {
std::vector<TimeStatsLayer const*> dumpStats;
for (const auto& ele : stats) {
dumpStats.push_back(&ele.second);
}
std::sort(dumpStats.begin(), dumpStats.end(),
[](TimeStatsHelper::TimeStatsLayer const* l,
TimeStatsHelper::TimeStatsLayer const* r) {
return l->totalFrames > r->totalFrames;
});
if (maxLayers && (*maxLayers < dumpStats.size())) {
dumpStats.resize(*maxLayers);
}
return dumpStats;
}
} // namespace surfaceflinger
} // namespace android
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