vfs.ufs.dirhash_maxmem ... how high can I go ?

[Dag-Erling Smørgrav]

"Rick C. Petty" <rick-freebsd at kiwi-computer.com> writes:
> Dag-Erling Smørgrav <des at des.no> writes:
> > "Rick C. Petty" <rick-freebsd at kiwi-computer.com> writes:
> > > Gore Jarold <gore_jarold at yahoo.com> writes:
> > > > I have 4 GB of physical and 4 GB of swap, running on normal 32-bit
> > > > x86, and I have this set as well:
> > > Which means (on an x86 system) that you have 3 GB of physical RAM.
> > No, it means has 4 GB of physical RAM, of which 3.5 GB are addressable.
> I've never seen FreeBSD address more than 3.0 GB of RAM without PAE..  it
> always seems to reserve 1.0 GB for video & other mmap'd I/O.

FreeBSD does not reserve anything "for video & other mmap'd I/O".  512
MB of the 4 GB address space are reserved for PCI, but that is a feature
of the IA32 architecture, not of FreeBSD.

DES
-- 
Dag-Erling Smørgrav - des at des.no