Re: Memory usage

On Mon, 2002-11-25 at 11:26, Peter Cahill wrote:
> hi,
> 
> I've been messing about with the .NET Framework for Windows for a while now,
> It seems to take ~10Mb of memory to initalise and initiate execution of a program.
> I measure the 10Mb via using Task Manager (Ctrl-Alt-Del).
> 
> When mono is in an almost-complete state, would its memory usage be similar ?

This is mono running a very simple test app that just sleeps for a while
then exits:

USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
dick     19888  0.4  0.8 11720 4264 pts/4    S    14:45   0:00 mono /tmp/sleep.exe

I'd imagine that memory usage wouldn't change dramatically from that; I
can't think of any major missing parts in the runtime.


>  How does the garbage collection technique actually work  -  Is it a method of waiting for the CPU
>  to become idle before it will do a scan or does it wait for physical memory to be running low before
>  it does a collection ?

At the moment we're using the Boehm gc.  It grabs chunks of virtual
memory, and performs a collection when a new allocation request would
exceed the space remaining in the chunk.

- Dick



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