[Qt-creator] Slow restart of application while debugging

[Andre Poenitz]

ext Kuiper, Luuk wrote:
> I'm working on a rather big application. I build that application in debug mode. The size of the executable is about 325 MB.
> When starting the application for debugging, it takes minutes to startup.
> I can imagine that a lot of processing takes places while and after reading the symbol table and to initialize the debugger.
> But it takes much (and I mean realy much) more time to start up than when I use plain gdb (10 to 20 seconds).

Have you played with the "Behaviour of breakpoint" settings in 
the debugger options?

> But my biggest problem is, that when I stop running the application, and I want the start it again,
> without code changes in between, it takes that same amount of time again.


> When using DDD with gdb, it takes some time to startup, and almost no time to restart the application, 
> because the symbol table is not reloaded every time, only after rebuilding the applcation. 

> I don't no if that is happening in QtCreator, but it looks to me, that some caching can take place.

Currently Creator uses a new gdb instance for each run. This was a
conscious decision a while ago as gdb itself got into a "confused" 
state fairly often. A new instance gives a clean slate...

I guess there could be an option to keep the old gdb instance,
though.

In any case, I would be interested in figuring out why the
first start of the debugger in Creator is so much slower then
running gdb from the command line. For that it would be nice
to see the contents of the "Gdb View" in Creator (possibly
in private mail)

Regards,
Andre'