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QmlProfiler: Send loaded events in batches of about 1024

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This significantly reduces the number of signals necessary when
loading traces. The overhead of queueing those signals across threads
was responsible for up to 80% of the time required to load a trace.

Change-Id: I461a2ef9944b0be102a29f8ed6b2b3f2f59f3c0f
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
This commit is contained in:
Ulf Hermann
2016-11-08 17:26:39 +01:00
parent a432683e0c
commit aaca50f705
5 changed files with 25 additions and 8 deletions
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4
src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
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@@ -378,8 +378,8 @@ void QmlProfilerModelManager::load(const QString &filename)
connect(reader, &QmlProfilerFileReader::notesLoaded,
d->notesModel, &QmlProfilerNotesModel::setNotes);
connect(reader, &QmlProfilerFileReader::qmlEventLoaded,
d->model, &QmlProfilerDataModel::addEvent);
connect(reader, &QmlProfilerFileReader::qmlEventsLoaded,
d->model, &QmlProfilerDataModel::addEvents);
connect(reader, &QmlProfilerFileReader::success, this, [this, reader]() {
d->traceTime->setTime(reader->traceStart(), reader->traceEnd());