DataGrid Optimisation in LC 8.0.0

[Mark Waddingham]

On 2016-04-25 14:41, Terence Heaford wrote:
> I was testing in the IDE of all versions.
> 
> After your question I produced a standalone and the scroll speed of
> that data grid is comparable to versions 6 & 7 and took 11 seconds.
> 
> I also noticed but did not quantify that there is a visible speed
> difference when loading the data from the SQLite file into the data
> grid.
> 
> This also improved when comparing the LC8 IDE with the LC8 standalone.
> 
> Why is the performance of stacks in the IDE so poor?

Running something you wish to introspect upon (accurately at least) will 
pretty much always be slower than running something you don't wish to 
introspect upon as there is a cost to supporting any sort of 
introspection. (In this case it is the IDE doing introspection all the 
time as objects are created, deleted and manipulated).

(Sort of analogous to a debug vs release build in machine-code compiled 
languages - debug builds retain a 1-1 mapping between source and 
machine-code which is usually substantially slower but understandable by 
a human; release builds seriously mangle this mapping making 
introspecting on the running executable with a debugger mostly 
un-understandable by a human).

You should also be able to use 'Suspend Development Tools' to get much 
the same performance as building a standalone (performance wise). If 
not, please file a bug and we'll look into it.

Warmest Regards,

Mark.

-- 
Mark Waddingham ~ mark at livecode.com ~ http://www.livecode.com/
LiveCode: Everyone can create apps