[Lazarus] RE : RE : RE : RE : RE : RE : RE : RE : RE : RE : Console AppDevelopment

[Ludo Brands]

> > > With the
> > > GTK2 widgedset I see an increase in memory allocated by 
> TCodeBuffer
> > > when opening/closing/reopening the same files.
> > 
> > How much increase?
> > 
> The test I did is the following:
> 1 Open lazarus with --skip-last-projet
> 2 File Open, select * files in fpc/packages/univint/.src (450 
> files, 18M on
> disk)
> 3 close all editor files
> 4 repeat 2,3
> 5 repeat 2,3
> Looking at a valgrind massif trace I find 
> -after step 2: 
>   53M allocated through DOOPENUNKNOWNFILE (first time load) 
> -after step 4:
>   53M allocated through DOOPENUNKNOWNFILE 
>   16M allocated through DOOPENEDITORFILE  (main.pp:9367 
> reload file) -after step 5:
>   53M allocated through DOOPENUNKNOWNFILE 
>   32M allocated through DOOPENEDITORFILE  (main.pp:9367 reload file)
> 
> There are intermediate samples and matching the massif 
> samples with the steps taken isn't straightforward. The last 
> sample taken has 53M+36M. The default timing is in 
> instrictions, not in seconds. I'll have to retake the trace 
> and time exactly the steps taken. I did make quit large 
> pauses between steps but still...
> 
> Ludo
> 
Recompiled lazarus gtk2 with cmem and memory growth is almost gone. After
step 5 I have 3.4M allocated by DOOPENEDITORFILE (main.pp:9367 reload file).
Apparently the memory manager is holding on to large blocks.

Ludo