B4J Question app work speed in DEBUG mode

[peacemaker]

HI, All

One my B4J crossplatform project is getting larger and larger.
Many B4Xpages that to be optionally opened by an user...
And the main is that several COM-ports must be processed as fast as possible: data flow of 115 kbaud to be received, checked, parsed, saved into the DB and drawn on the charts practically at real time scale.

Work speed question came very hard.

Firstly i changed SQLite DB to the in-memory one (instead of file), it helped a lot.
And in Release compilation - all works OK. But it was always and it is now almost impossible to debug the app - it's VERY slow work in debug-mode.
And it is going to be slower and slower further, during project is growing.

I understand that in DEBUG mode many debug lines are added into the source code by the IDE - and maybe this is the root of my trouble.

1) Any suggestion how to resolve the situation ?
2) Maybe is it possible to setup some modules by some directive to be ... not in DEBUG mode ? Say, if a module has directive like #AlwaysReleaseMode and compiled without DEBUG lines - it should work faster... @Erel, what do you think ?

 

[MichalK73]

I think it may be worth making a project version for DEBUG mode without modules that are, for example, permanent, proven, working and not needed to test other important elements. Then add these corrected modules to the production version. The question immediately arises whether this can't be done using the GIT version?

 

[peacemaker]

Most fast modules are main and needed always (data flow fastest parsing) for work. And not needed to be debugged now for debugging next functions

 

[MichalK73]

2) Maybe is it possible to setup some modules by some directive to be ... not in DEBUG mode ? Say, if a module has directive like #AlwaysReleaseMode and compiled without DEBUG lines - it should work faster... @Erel, what do you think ?

Maybe right.
What is the difference in program speed in debug and release mode?

 

[peacemaker]

difference in program speed in debug and release mode

As usual it looks like a couple of orders of magnitude faster, i mean 100 times maybe faster.
Debug needs to wait for 15-20 seconds to a next break point, but in release, this point is called tens-hundred times per second...

 

[MichalK73]

Well, that's the difference.

 

[peacemaker]

It's only one such app i have, with the need to process the data flow as fast as possible. I mean, any other "regular" apps were never so slow in debug mode.
And sure, interface freezing is also absolutely unacceptable.

It can be described like the multichannel oscilloscope when 1-10 data flows are to be got\saved\shown as an online chart on the max speed. And without freezing.

 

[Erel]

Remove all breakpoints, clean the project and run it in debug mode. It should be almost as fast as in release mode.

 

[peacemaker]

clean the project

Seems, helped !
What does cleaning project do ?

 

[Erel]

I guess that it is the removal of breakpoints that actually helped, no?

Cleaning the project improves debugging speed in B4A / B4i as it forces a full compilation. In B4J all compilations are full.