[Mono-list] Perf. & Mem.: ivm/icvm vs. Mono/.NET/Java/Kaffe... etc
Fri, 27 Dec 2002 13:55:05 +0000
Performace and Memory: IVM/ICVM versus Mono/.NET/Java/Kaffe/Kissme/SableVM..
Have a look at the virtual machine called "IVM":
The performance and the use of memory of programs for this VM, is nearly
like Native-Code programs. And this _without_ JITter!
Do anybody know, how this is possible?
The first time, where I have seen ICVM (Internet C++ VM) is three years ago.
At this time there existing Downloads for the VM, special GNU C and C++
Compiler called "igcc" and "ig++" with libs and some games, which used the
XLib (that were existing programs which are nearly all only new compiled for
this VM). And as highlight there existing a port of Doom1 for ICVM. And Doom
runs on ICVM so fast and needs so less memory like the same program in
The developer of ICVM told me, that this platformindependent programs run on
x86, PPC and a lot of other hardware and on a lot of different
Unix-OperatingSystems. And on Windows. But on Windows there existing at the
moment no support for programs using the XLIb.
One or two years later they have published the VM on Sourceforge under the
GPL. It includes some platformindependent programs based on OpenGL.
This programs runs realy on Windows _and_ Linux. But it wasn't so fantastic.
Java-programs with GL4Java or Java3D runs with he same performance - I
think. And until today there existing no XLib-based programs, which runs
with ICVM on Windows.
And today the project is since over one year dead.
But I wonder until today, how it is possible, to have a VM, which runs
without JITter - only with an interpreter (thats that, what the developer
said to me, that its only interpreted) runs programs (nearly) so fast and
(nearly) with so less memory like in native-code.
Do anybody know more about the concept of ICVM?
And is it possible to integrate some of the features of ICVM in Mono?
How fast a VM is, you can only feel, if the program on the VM is big and
only a few native-code bindings have.
And I think, that Doom is a good program for testing it.
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