Re: 20 Seconds for sorting simple table

Holger Brands wrote:

I can give you two advices:

- if you use JXTable with TableComparatorChooser you should
call JXTable.setSortable(false) to let GL do the sorting

- make you Comparators and TableFormat implementations as efficient as possible

In your code example, your TableFormat.getColumnValue() implementation
instantiates a new SimpleDateFormat object everytime, which is expensive.
If you can avoid this, the sorting should perform much better.

Hope this helps,
Holger

>
>
> Guess you're right, I haven't got much expirience with profiling but in
> attachment you can find a report of the 'call' tree.
>
> http://www.nabble.com/file/p17765008/Call_Tree.html Call_Tree.html
>
>
> Holger Brands wrote:
> >
> > Ok.
> > I just tried your example and most time
> > is consumed by SortedList.setComparator(..).
> >
> > We'd have to profile this example to get more details...
> >
> > Holger
> >
> >>
> >>
> >> I've read the FAQ before posting and assertions are disabled.
> >> Thanks
> >>
> >>
> >>
> >> Holger Brands wrote:
> >> >
> >> > You should first try the suggestion in the performance FAQ to
> >> > disable assertions:
> >> >
> >> http://www.publicobject.com/glazedlists/wiki/index.php?title=FAQ#Performance
> >> >
> >> > Hope this helps,
> >> > Holger
> >> >
> >> >>
> >> >> I've an ArrayList filled with +- 30000 objects of type
> >> 'InstrumentBean'.
> >> >>
> >> >> I've followed the tutorial to create a sortable JTable. (I'm using
> >> >> JXTable
> >> >> but that won't make the difference).
> >> >>
> >> >> When I click on a header to sort by a column, my CPU goes 100% and it
> >> >> takes
> >> >> 20 seconds before the table is sorted and I have control again.
> >> >>
> >> >> Is this normal ?
> >> >>
> >> >> I've attached my source code.
> >> >>
> >> >> http://www.nabble.com/file/p17753926/TestGlazedLists.rar
> >> >> TestGlazedLists.rar
> >> >>
> >> >> You will find a file instruments.xml from which I create my collection
> >> of
> >> >> 'InstrumentBeans'.
> >> >> This collection will be used to create the sortable table.
> >> >>
> >> >> Thanks for your help
> >> >>
> >> >>
> >> >> --
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> >> http://www.nabble.com/20-Seconds-for-sorting-simple-table-tp17753926p17753926.html
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> >> >>
> >> >>
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> >> >
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