Thank you for your feedback. JustTrace is beta version and we will try to offer better performance for the official release. Also what profiler (sampling, tracing) did you use?
As for your second point there are indeed two ways to filter the data. The first one is using the grid/treelistview column filtering. The second one is not documented but you should be able to find the following configuration file %temp%\Telerik\JustTrace\justTrace.xml. We plan to document this feature in the next version.
Also we are already considering to include charts/graphs in future JustTrace version so stay tuned.
the Telerik team
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