Size & Performance

Oscar Martinez de la Torre omt at
Wed Feb 9 01:59:03 PST 2000


	We are working with Kaffe and RTEMS for embedded applications.
	I was succeeded in cross-compiling Kaffe for RTEMS on ERC32, with this

./configure --target=sparc-rtems  --with-staticlib --with-staticvm
--with-engine=intrp --without-x

	But it doesn't work properly: it crashs. :(
	Anyway, we are trying to estimate its performance and memory size.

	Any reference about them are welcome, particularly about performance
	in the start-up and in running status (times, etc)

	About size, I have identified these files to be in the built-in 

-rw-r--r--   1 omt      wms        413236 Jan 26 11:03 libio.a
-rw-r--r--   1 omt      wms           659 Jan 26 11:03
-rw-r--r--   1 omt      wms       2019280 Jan 26 11:04 libnative.a
-rw-r--r--   1 omt      wms           680 Jan 26 11:04
-rw-r--r--   1 omt      wms        885137 Jan 26 11:02 Klasses.jar
-rw-r--r--   1 omt      wms           428 Jan 27 14:34

	Just for a simple HelloWorldApp!

	The Kaffe executable with the RTEMS OS (kaffe is a task) is:

-rwxr-xr-x   1 omt      wms       2601580 Jan 26 11:01 Kaffe0.exe

	And if I tar the files and attach it as an object:

-rw-r--r--   1 omt      wms       3328000 Jan 27 14:46

	So, Kaffe+RTEMS+filesystem_tar =

-rwxr-xr-x   1 omt      wms       5952660 Jan 28 09:45 Kaffe5.exe

	At runtime it needs to untar the filesystem, so the amount of memory
would be:

	9'26 Mb 	a huge amount!

I will be looking forward to your comments, suggestions and performances

Best regards,

PS:	I have just started to try gcj, any comments?

Óscar Martínez de la Torre -  Office Phone: +31-(0)71.565.5844
Telecommunication Engineer at Universidad Politécnica de Madrid 
European Space Agency ESTEC/TOS/EMS Erasmus Building Office Nb212 
Keplerlaan,1 - NL 2201 AZ - Noordwijk ZH - The Netherlands
Mail: omt at - Personal Mail: omt at

More information about the kaffe mailing list