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Unified Diff: content/browser/renderer_host/input/render_widget_host_latency_tracker.cc

Issue 2771053003: WIP: Plumbing input event latency reporting through Mus GPU.
Patch Set: NON_EXPORTED_BASE Created 3 years, 8 months ago
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Index: content/browser/renderer_host/input/render_widget_host_latency_tracker.cc
diff --git a/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc b/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc
index 5c4f789315389acc924a718f744c2dab60c54059..5a11170bd011f39e3aba075760ff279d091ad566 100644
--- a/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc
+++ b/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc
@@ -15,6 +15,7 @@
#include "content/public/browser/content_browser_client.h"
#include "content/public/common/content_client.h"
#include "ui/events/blink/web_input_event_traits.h"
+#include "ui/latency/latency_histogram_macros.h"
using blink::WebGestureEvent;
using blink::WebInputEvent;
@@ -78,69 +79,6 @@ void UpdateLatencyCoordinates(const WebInputEvent& event,
}
}
-// Check valid timing for start and end latency components.
-#define CONFIRM_VALID_TIMING(start, end) \
- DCHECK(!start.first_event_time.is_null()); \
- DCHECK(!end.last_event_time.is_null()); \
- DCHECK_GE(end.last_event_time, start.first_event_time);
-
-// Event latency that is mostly under 1 second. We should only use 100 buckets
-// when needed.
-#define UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(name, start, \
- end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::UmaHistogramCustomCounts( \
- name, (end.last_event_time - start.first_event_time).InMicroseconds(), \
- 1, 1000000, 100);
-
-#define UMA_HISTOGRAM_INPUT_LATENCY_MILLISECONDS(name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::UmaHistogramCustomCounts( \
- name, (end.last_event_time - start.first_event_time).InMilliseconds(), \
- 1, 1000, 50);
-
-// Touch/wheel to scroll latency using Rappor.
-#define RAPPOR_TOUCH_WHEEL_TO_SCROLL_LATENCY(delegate, name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- rappor::RapporService* rappor_service = \
- GetContentClient()->browser()->GetRapporService(); \
- if (rappor_service && delegate) { \
- std::unique_ptr<rappor::Sample> sample = \
- rappor_service->CreateSample(rappor::UMA_RAPPOR_TYPE); \
- delegate->AddDomainInfoToRapporSample(sample.get()); \
- sample->SetUInt64Field( \
- "Latency", \
- (end.last_event_time - start.first_event_time).InMicroseconds(), \
- rappor::NO_NOISE); \
- rappor_service->RecordSample(name, std::move(sample)); \
- }
-
-// Long touch/wheel scroll latency component that is mostly under 200ms.
-#define UMA_HISTOGRAM_SCROLL_LATENCY_LONG_2(name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::Histogram::FactoryGet(name, 1000, 200000, 50, \
- base::HistogramBase::kUmaTargetedHistogramFlag) \
- ->Add((end.last_event_time - start.first_event_time).InMicroseconds());
-
-// Short touch/wheel scroll latency component that is mostly under 50ms.
-#define UMA_HISTOGRAM_SCROLL_LATENCY_SHORT_2(name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::Histogram::FactoryGet(name, 1, 50000, 50, \
- base::HistogramBase::kUmaTargetedHistogramFlag) \
- ->Add((end.last_event_time - start.first_event_time).InMicroseconds());
-
-std::string LatencySourceEventTypeToInputModalityString(
- ui::SourceEventType type) {
- switch (type) {
- case ui::SourceEventType::WHEEL:
- return "Wheel";
- case ui::SourceEventType::TOUCH:
- return "Touch";
- default:
- return "";
- }
-}
-
std::string WebInputEventTypeToInputModalityString(WebInputEvent::Type type) {
if (type == blink::WebInputEvent::MouseWheel) {
return "Wheel";
@@ -154,153 +92,6 @@ std::string WebInputEventTypeToInputModalityString(WebInputEvent::Type type) {
return "";
}
-void ComputeScrollLatencyHistograms(
- const LatencyInfo::LatencyComponent& gpu_swap_begin_component,
- const LatencyInfo::LatencyComponent& gpu_swap_end_component,
- int64_t latency_component_id,
- const LatencyInfo& latency) {
- DCHECK(!latency.coalesced());
- if (latency.coalesced())
- return;
-
- DCHECK(!gpu_swap_begin_component.event_time.is_null());
- DCHECK(!gpu_swap_end_component.event_time.is_null());
- LatencyInfo::LatencyComponent original_component;
- if (latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
- // This UMA metric tracks the time between the final frame swap for the
- // first scroll event in a sequence and the original timestamp of that
- // scroll event's underlying touch event.
- for (size_t i = 0; i < original_component.event_count; i++) {
- UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.TouchToFirstScrollUpdateSwapBegin",
- original_component, gpu_swap_begin_component);
- }
- } else if (!latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
- return;
- }
-
- // This UMA metric tracks the time from when the original touch event is
- // created to when the scroll gesture results in final frame swap.
- for (size_t i = 0; i < original_component.event_count; i++) {
- UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.TouchToScrollUpdateSwapBegin", original_component,
- gpu_swap_begin_component);
- }
-}
-
-void ComputeTouchAndWheelScrollLatencyHistograms(
- RenderWidgetHostDelegate* render_widget_host_delegate,
- const ui::LatencyInfo::LatencyComponent& gpu_swap_begin_component,
- const ui::LatencyInfo::LatencyComponent& gpu_swap_end_component,
- int64_t latency_component_id,
- const ui::LatencyInfo& latency) {
- DCHECK(!latency.coalesced());
- if (latency.coalesced())
- return;
-
- LatencyInfo::LatencyComponent original_component;
- std::string scroll_name = "ScrollUpdate";
-
- const std::string input_modality =
- LatencySourceEventTypeToInputModalityString(latency.source_event_type());
-
- if (latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
- scroll_name = "ScrollBegin";
- // This UMA metric tracks the time between the final frame swap for the
- // first scroll event in a sequence and the original timestamp of that
- // scroll event's underlying touch/wheel event.
- UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.ScrollBegin." + input_modality +
- ".TimeToScrollUpdateSwapBegin2",
- original_component, gpu_swap_begin_component);
-
- RAPPOR_TOUCH_WHEEL_TO_SCROLL_LATENCY(
- render_widget_host_delegate,
- "Event.Latency.ScrollBegin." + input_modality +
- ".TimeToScrollUpdateSwapBegin2",
- original_component, gpu_swap_begin_component);
-
- // TODO(lanwei): Will remove them when M56 is stable, see
- // https://crbug.com/669618.
- UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.ScrollUpdate." + input_modality +
- ".TimeToFirstScrollUpdateSwapBegin2",
- original_component, gpu_swap_begin_component);
- } else if (latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
- // This UMA metric tracks the time from when the original touch event is
- // created to when the scroll gesture results in final frame swap.
- // First scroll events are excluded from this metric.
- if (input_modality == "Touch") {
- UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.ScrollUpdate.Touch.TimeToScrollUpdateSwapBegin2",
- original_component, gpu_swap_begin_component);
-
- RAPPOR_TOUCH_WHEEL_TO_SCROLL_LATENCY(
- render_widget_host_delegate,
- "Event.Latency.ScrollUpdate.Touch.TimeToScrollUpdateSwapBegin2",
- original_component, gpu_swap_begin_component);
- }
- } else {
- // No original component found.
- return;
- }
-
- LatencyInfo::LatencyComponent rendering_scheduled_component;
- bool rendering_scheduled_on_main = latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_MAIN_COMPONENT, 0,
- &rendering_scheduled_component);
- if (!rendering_scheduled_on_main) {
- if (!latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_IMPL_COMPONENT, 0,
- &rendering_scheduled_component))
- return;
- }
-
- const std::string thread_name = rendering_scheduled_on_main ? "Main" : "Impl";
-
- UMA_HISTOGRAM_SCROLL_LATENCY_LONG_2(
- "Event.Latency." + scroll_name + "." + input_modality +
- ".TimeToHandled2_" + thread_name,
- original_component, rendering_scheduled_component);
-
- LatencyInfo::LatencyComponent renderer_swap_component;
- if (!latency.FindLatency(ui::INPUT_EVENT_LATENCY_RENDERER_SWAP_COMPONENT, 0,
- &renderer_swap_component))
- return;
-
- UMA_HISTOGRAM_SCROLL_LATENCY_LONG_2(
- "Event.Latency." + scroll_name + "." + input_modality +
- ".HandledToRendererSwap2_" + thread_name,
- rendering_scheduled_component, renderer_swap_component);
-
- LatencyInfo::LatencyComponent browser_received_swap_component;
- if (!latency.FindLatency(
- ui::INPUT_EVENT_BROWSER_RECEIVED_RENDERER_SWAP_COMPONENT, 0,
- &browser_received_swap_component))
- return;
-
- UMA_HISTOGRAM_SCROLL_LATENCY_SHORT_2(
- "Event.Latency." + scroll_name + "." + input_modality +
- ".RendererSwapToBrowserNotified2",
- renderer_swap_component, browser_received_swap_component);
-
- UMA_HISTOGRAM_SCROLL_LATENCY_LONG_2(
- "Event.Latency." + scroll_name + "." + input_modality +
- ".BrowserNotifiedToBeforeGpuSwap2",
- browser_received_swap_component, gpu_swap_begin_component);
-
- UMA_HISTOGRAM_SCROLL_LATENCY_SHORT_2(
- "Event.Latency." + scroll_name + "." + input_modality + ".GpuSwap2",
- gpu_swap_begin_component, gpu_swap_end_component);
-}
// LatencyComponents generated in the renderer must have component IDs
// provided to them by the browser process. This function adds the correct
// component ID where necessary.
@@ -545,58 +336,7 @@ void RenderWidgetHostLatencyTracker::OnSwapCompositorFrame(
for (LatencyInfo& latency : *latencies) {
AddLatencyInfoComponentIds(&latency, latency_component_id_);
latency.AddLatencyNumber(
- ui::INPUT_EVENT_BROWSER_RECEIVED_RENDERER_SWAP_COMPONENT, 0, 0);
- }
-}
-
-void RenderWidgetHostLatencyTracker::OnGpuSwapBuffersCompleted(
- const LatencyInfo& latency) {
- LatencyInfo::LatencyComponent gpu_swap_end_component;
- if (!latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0,
- &gpu_swap_end_component)) {
- return;
- }
-
- LatencyInfo::LatencyComponent gpu_swap_begin_component;
- if (!latency.FindLatency(ui::INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT, 0,
- &gpu_swap_begin_component)) {
- return;
- }
-
- LatencyInfo::LatencyComponent tab_switch_component;
- if (latency.FindLatency(ui::TAB_SHOW_COMPONENT, latency_component_id_,
- &tab_switch_component)) {
- base::TimeDelta delta =
- gpu_swap_end_component.event_time - tab_switch_component.event_time;
- for (size_t i = 0; i < tab_switch_component.event_count; i++) {
- UMA_HISTOGRAM_TIMES("MPArch.RWH_TabSwitchPaintDuration", delta);
- }
- }
-
- if (!latency.FindLatency(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT,
- latency_component_id_, nullptr)) {
- return;
- }
-
- ui::SourceEventType source_event_type = latency.source_event_type();
- if (source_event_type == ui::SourceEventType::WHEEL ||
- source_event_type == ui::SourceEventType::TOUCH) {
- ComputeTouchAndWheelScrollLatencyHistograms(
- render_widget_host_delegate_, gpu_swap_begin_component,
- gpu_swap_end_component, latency_component_id_, latency);
- }
-
- // Compute the old scroll update latency metrics. They are exclusively
- // calculated for touch scrolls, and will be deprecated on M56.
- // (https://crbug.com/649754)
- LatencyInfo::LatencyComponent mouse_wheel_scroll_update_component;
- if (!latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_GENERATE_SCROLL_UPDATE_FROM_MOUSE_WHEEL, 0,
- &mouse_wheel_scroll_update_component)) {
- ComputeScrollLatencyHistograms(gpu_swap_begin_component,
- gpu_swap_end_component,
- latency_component_id_, latency);
+ ui::DISPLAY_COMPOSITOR_RECEIVED_FRAME_COMPONENT, 0, 0);
}
}
@@ -605,4 +345,24 @@ void RenderWidgetHostLatencyTracker::SetDelegate(
render_widget_host_delegate_ = delegate;
}
+void RenderWidgetHostLatencyTracker::ReportRapporScrollLatency(
+ const std::string& name,
+ const LatencyInfo::LatencyComponent& start_component,
+ const LatencyInfo::LatencyComponent& end_component) {
+ CONFIRM_VALID_TIMING(start_component, end_component)
+ rappor::RapporService* rappor_service =
+ GetContentClient()->browser()->GetRapporService();
+ if (rappor_service && render_widget_host_delegate_) {
+ std::unique_ptr<rappor::Sample> sample =
+ rappor_service->CreateSample(rappor::UMA_RAPPOR_TYPE);
+ render_widget_host_delegate_->AddDomainInfoToRapporSample(sample.get());
+ sample->SetUInt64Field(
+ "Latency",
+ (end_component.last_event_time - start_component.first_event_time)
+ .InMicroseconds(),
+ rappor::NO_NOISE);
+ rappor_service->RecordSample(name, std::move(sample));
+ }
+}
+
} // namespace content
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