[model/view] slow refresh on big table

[lauranger]

I use an implementation of QAbstractTableModel with
a QSortFilterProxyModel in between.
(I was writing a much more dataful version of this message
when the spirit of the web formulars played me a bad trick).
I feel that the performance problem is not with the implementation
I wrote but with the number of rows it presents and the way
Qt seems to handle refreshes. I'd like to know from where could
I trace refresh start and refresh end.
Had anybody faced such slowliness with big model ?

[abbapatris]

If someone knows how to do this this would be great. I am also having the same issue.

[wysota]

How do you know it is the same issue?