Hi Guys,

I've noticed that the performance of tables seems to degrade almost
exponentially with the number of columns in the table.

I realise there is a bug relating to this issue already
(http://bugzilla.qooxdoo.org/show_bug.cgi?id=4237) but I think the problem
is something other than what's described in that bug report.

What makes me think there is another issue at play is, when you create a
table with 10 rows of 16 columns the table generates almost instantly. But
if you create a table with one row, and 160 columns the table takes so long
to generate that the browser issues a warning about a long running script.

I don't think the issue is that only the rows are virtualised, because in
both the aforementioned cases I had the browser window maximized and all the
cells were visible, meaning in each case there was a total of 160 cells
created.

I've created a playground example to illustrate the point. Try different
combinations of rows & columns and you can see the table doesn't handle
large numbers of columns at all well.

http://tinyurl.com/3hfx8sg

Thanks for the great framework, any advice is sincerely appreciated.

Nick Tindall

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