Re: AMD64 1GB limit

[Michael Shalayeff <mickey@lucifier.net>]

Making, drinking tea and reading an opus magnum from Matt Hamilton:
[Charset ISO-8859-1 unsupported, filtering to ASCII...]
> Michael Shalayeff wrote:
> 
> > assuming you mean data size limit it's hard-limited to 1g
> 
> Yes that is what I meant.  From reading your post and posts from others, 
> it seems that a change to vmparam.h alone might not be a good thing.
> 
> Any idea when this might change or become an more easily (or 
> recommended) tunable?  It's come of a bit of a shock moving from 
> FreeBSD/i386 to OpenBSD/AMD64 and finding the memory available per 
> process has gone down. :(  I understand the 4GB limit and the fact that 
> AMD64 boots in i386 mode when the memory is being probed etc.  But what 
> is limiting the process size to 1GB?

MAX constants will never become a tunable.
those are the absolute maximums supported for
the given architecture.

however w/ some effort they can be changed
in the mentioned headers assuming the rest
of the code can cope w/ it.

now
MAXDSIZ only limits your data+bss+heap
you can always mmap more files and anons...

cu

-- 
    paranoic mickey       (my employers have changed but, the name has remained)