RE: garbage collection take too much time to execute....

[- - <decuplo at yahoo dot com>]

Hi,
I run the program with both environment variables set to 1.
Previous I run with just one single variable set.

export GC_DUMP_REGULARLY=1
export GC_PRINT_STATS=1

As you can see, the first time when button is pushed 
the output is about 12 seconds!!! .
Next the run is about 5 seconds....

I'll try to setup a compiler environment with more recent release of gcj and come back with results. 
 
In the mean time I tried to understand the output of code but I'm a novice and need help.


$ snippet.exe 
paintControl()
widgetSelected()
start
Elapsed milliseconds: 11921
end
paintControl()
widgetSelected()
start
Elapsed milliseconds: 4765
end
paintControl()
widgetSelected()
start
Elapsed milliseconds: 4750
end
paintControl()
widgetSelected()
start
Elapsed milliseconds: 4812
end
paintControl()



thanks
x10.




--- On Tue, 6/17/08, Boehm, Hans  wrote:

> From: Boehm, Hans <hans.boehm@hp.com>
> Subject: RE: garbage collection take too much time to execute....

> Date: Tuesday, June 17, 2008, 7:51 PM
> Did you try with a recent version of gcj?
> 
> In the past, there have been problems with the collector
> looking for pointers in graphics memory.  You can try
> running the program with the GC_DUMP_REGULARLY environment
> variable set, and look at the size of the root sets.  If it
> appears to include your graphics memory, then that's
> probably the issue.
> 
> If not, GC_PRINT_STATS output might be helpful.
> 
> Hans
> 
> > -----Original Message-----
> > On Behalf Of - -
> > Sent: Tuesday, June 17, 2008 8:23 AM
> > Subject: garbage collection take too much time to
> execute....
> >
> >
> > Hi,
> > I found a strange behaviour on code generated by gcj
> when
> > compare its output with code generated by eclipse.
> >
> > Mainly the code generated by gcj  take too much time
> to
> > perform a memory  garbage collection (about 5 seconds)
> > instead of only 15 milliseconds of byte code generated
> by eclipse.
> >
> > The problem seems to happens when there are canvas and
> > transform operations. I attach a simple snippet code
> that
> > write a vertical text on canvas in order to reproduce
> the behaviour.
> >
> > The gcj compiler I use is:
> > $ gcj --version
> > gcj.exe (GCC) 3.4.5 (mingw-vista special r3) Copyright
> (C)
> > 2004 Free Software Foundation, Inc.
> > This is free software; see the source for copying
> conditions.
> >  There is NO warranty; not even for MERCHANTABILITY or
> > FITNESS FOR A PARTICULAR PURPOSE.
> >
> > with the swt version 3349: 
> "swt-gdip-win32-3349.dll"  and
> > "swt-win32-3349.dll"
> >
> > I'm new of this discussion list, hoping not annoy
> you. It is
> > a trouble or it is just a mistake on usage of
> transform?
> > thanks you,
> >
> > x10
> >
>

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