limitiation on memory allocation
dima.sorkin at gmail.com
Sat Mar 10 16:59:30 UTC 2007
I've read some pages about 'kern.maxusers', 'kern.maxdsize'.
I have questions:
After I reduce 'maxusers' to some reasonable amount for that computer (say 10),
and enlarge 'maxdsize', will a user process be able to allocate
arrays that are considerably bigger than the physical memory size ?
This is what I really need. I run processes in which it can come to
2) Following the
Should I put maxdsize == phys mem size, or should I put it lower
(by how much) ?
3) On Intel pentium 4 machine with 2GB phys memory,
during installation where almost all options were taken as defaults,
should I worry that kernel is not configured to use PAE ?
Installation program by default allocated 4GB swap,
so totally it is 6GB. How do I check this ?
On 3/9/07, Derek Ragona wrote:
> Not all the settings there are tuneable. In 6.X the allowable memory is
> somewhat automatic based on the max users. Your kernel is set to 384. You
> can try changing that.
> You can also make some kernel settings in:
> You can see the possible variables to set in:
> I think the one variable you may want to change is:
> kern.maxdsiz="to your actual real memory size"
> Don't make this larger than the real memory, in my experience that will
> cause the system to not boot properly into multi-user.
> On FreeBSD 6.2 i386 with 2GB of physical memory I can't allocate
> more than 500Mb for my program.
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