[vtkusers] Deleting vtkActor takes long

[Yang Yang]

Dear all,
I have a program to display about 50,000 spheres. It doesn't take too much
time to display them(about 2 second), however, when I close the program,
which will first delete all the actors, it takes a very long time(about 30
seconds). When I debug the code, I found that everytime I pause the debug,
the program stops somewhere shown in the call stack attached below. It seems
that the program spends a lot of time in garbage collection, which I'm not
quite clear how it works. Could anybody tell me how can I speed up the
deleting actors, or at which direction I should look at. Any suggetion will
be appreciated.

Best regards
Yang

     std::_Iterator_base::_Orphan_me()    C++
     std::_Iterator_base::~_Iterator_base()    C++
     std::_Bidit<vtkGarbageCollectorImpl::Entry
*,int,vtkGarbageCollectorImpl::Entry * const
*,vtkGarbageCollectorImpl::Entry * const
&>::~_Bidit<vtkGarbageCollectorImpl::Entry
*,int,vtkGarbageCollectorImpl::Entry * const
*,vtkGarbageCollectorImpl::Entry * const &>()    C++
     std::_Tree<std::_Tset_traits<vtkGarbageCollectorImpl::Entry
*,vtkGarbageCollectorImpl::EntryCompare,std::allocator<vtkGarbageCollectorImpl::Entry
*>,0> >::const_iterator::~const_iterator()    C++
     std::_Tree<std::_Tset_traits<vtkGarbageCollectorImpl::Entry
*,vtkGarbageCollectorImpl::EntryCompare,std::allocator<vtkGarbageCollectorImpl::Entry
*>,0> >::iterator::~iterator()    C++
     std::_Tree<std::_Tset_traits<vtkGarbageCollectorImpl::Entry
*,vtkGarbageCollectorImpl::EntryCompare,std::allocator<vtkGarbageCollectorImpl::Entry
*>,0> >::insert(vtkGarbageCollectorImpl::Entry * const &)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkInformation>(vtkGarbageCollector *,
vtkInformation * &, const char *)    C++
     vtkDataObject::ReportReferences(vtkGarbageCollector *)    C++
     vtkPointSet::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPolyData>(vtkGarbageCollector *,
vtkPolyData * &, const char *)    C++
     vtkPrimitivePainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPolyDataPainter>(vtkGarbageCollector *,
vtkPolyDataPainter * &, const char *)    C++
     vtkChooserPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++
     vtkCompositePainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++
     vtkScalarsToColorsPainter::ReportReferences(vtkGarbageCollector *)
C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainter::ReportReferences(vtkGarbageCollector *)    C++
     vtkDefaultPainter::ReportReferences(vtkGarbageCollector *)    C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *)    C++
     vtkGarbageCollectorImpl::Report(vtkObjectBase *, void *, const char
*)    C++
     vtkGarbageCollectorReportInternal(vtkGarbageCollector *, vtkObjectBase
*, void *, const char *)    C++
     vtkGarbageCollectorReport<vtkPainter>(vtkGarbageCollector *, vtkPainter
* &, const char *)    C++
     vtkPainterPolyDataMapper::ReportReferences(vtkGarbageCollector *)
C++

vtkGarbageCollectorToObjectBaseFriendship::ReportReferences(vtkGarbageCollector
*, vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::VisitTarjan(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::MaybeVisit(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::FindComponents(vtkObjectBase *)    C++
     vtkGarbageCollectorImpl::CollectInternal(vtkObjectBase *)    C++
     vtkGarbageCollector::Collect(vtkObjectBase *)    C++
     vtkObjectBase::UnRegisterInternal(vtkObjectBase *, int)    C++
     vtkObject::UnRegisterInternal(vtkObjectBase *, int)    C++
     vtkAlgorithm::UnRegister(vtkObjectBase *)    C++
     vtkActor::~vtkActor()    C++
     vtkOpenGLActor::~vtkOpenGLActor()    C++
     vtkOpenGLActor::`vector deleting destructor'()    C++
     vtkObjectBase::UnRegisterInternal(vtkObjectBase *, int)    C++
     vtkObject::UnRegisterInternal(vtkObjectBase *, int)    C++
     vtkObjectBase::UnRegister(vtkObjectBase *)    C++
     vtkObjectBase::Delete()    C++
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