Virtual memory consumption (both user and kernel) in modern CURRENT

Brian Candler B.Candler at pobox.com
Thu Feb 16 04:35:54 PST 2006


On Wed, Feb 15, 2006 at 11:11:49AM +0800, David Xu wrote:
> >1) Is it normal that virtual memory size for almost every non-kernel 
> >process
> >   is close to 50Mb now:
> >
> >    ftp://external.atlantis.dp.ua/FreeBSD/CURRENT/top.txt
> >
> >   Is it miscalculation or real growth of virtual address space?
> >
> >
> I believe this is the new malloc code in libc, I am seeing this on my
> Athlon64 machine, now it likes swap memory, in the old days, it seldom
> touched it.

IIRR, the new malloc grabs 32MB immediately. However, I'd hope that doesn't
mean that 32MB of pages are actually touched, and then get swapped out to
disk. If it does, I'm staying on FreeBSD 6.0 :-)

Regards,

Brian.


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