Re: 32 or 64 some questions
- From: Aragorn <aragorn@xxxxxxxxxxxxxxxxxxx>
- Date: Mon, 23 Feb 2009 03:41:16 +0100
On Monday 23 February 2009 02:44, someone identifying as *jjim* wrote
in /comp.os.linux.hardware:/
been gone for awhile, busy its tax season. I have a new notebook coming
this week. it can run 32 or 64. i presume i would be better installing the
64bit?
I would recommend it, yes. And if you're going for 32-bit nevertheless,
then use a PAE-enabled kernel or you won't be able to use the full 4 GB of
RAM due to the PCI memory hole. PAE kernels also have a software
implementation of NX technology, so they're also safer than regular 32-bit
kernels.
it has a sold state 64gig hard drive along with a 320gig. how
should i configure the two drives for the utmost speed? boot, root, usr,
home....what would be best. it has 4 gigs of mem with a Geforce card.
I would recommend having the static filesystems on your solid state drive -
they are better suited for reading than for writing - although you wouldn't
be able to fill it up with those, but that leaves room for future
installations. ;-) Put the dynamic filesystems on the regular hard disk,
like so...
Solid state:
- /boot
- /usr
- /opt
Hard disk:
- /
- swap
- /var
- /srv (if present)
- /home
Use a /tmpfs/ for */tmp.* You've got the RAM to spare, and it's faster than
having it on your hard disk. In addition, it'll get cleaned out upon
shutdown.
If you're into programming and/or you install a lot of software from
sources, I would recommend making */usr/local* a separate partition on your
hard disk as well.
Also, mount the filesystems on the solid state disk with /ro/ as a mount
option.
I am dumping windows of course without even activating it.I do need for
business to access a tax program that only runs on windshit, do you
recommend a virtual machine? i need to have it work at top speed cause its
where i make money doing tax work.
If it's a 64-bit processor it'll probably have hardware virtualization
extensions, which means that you could use Xen as a hypervisor and run
Windblows in a Xen virtual machine - off of the hard disk, of course,
because Windows is a one-filesystem platform and will often write to it.
Virtual machines running atop of the Xen hypervisor work at nearly native
speed. The only bottleneck is I/O, especially in hardware virtual machines
because its hardware access is trapped by the hypervisor and sent to /dom0/
- i.e. the management virtual machine, which must be GNU/Linux, Solaris,
NetBSD or OpenBSD.
Paravirtualization is faster than hardware virtualization because it
directly passes its I/O calls to the /dom0/ without having to have them
trapped by the hypervisor first, but unfortunately Windows is not
paravirtualizable due to its closed source and license. This is exactly
why hardware virtualization support was added to the /x86/ architecture in
the first place.
Xen is Open Source and is supplied in many distribution repositories, but
you can also get it here, both as sources and as /.rpm/ or /.deb/ packages:
http://www.xen.org
It does not run inside an operating system but underneath it, which is why
even the management domain (dom0) is in fact a virtual machine. It gets
loaded into memory by GRUB and loads a designated /dom0/ Linux kernel as a
module to it. The resulting GNU/Linux system after boot is then
your /dom0,/ from which you boot the /domU/ (unprivileged) virtual
machines, which can be paravirtual - i.e. with a patched kernel to direct
all I/O directly into the /dom0/ - or hardware virtual, as you would need
for Windows.
--
*Aragorn*
(registered GNU/Linux user #223157)
.
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