On Sat, 11 Oct 2008, Pegasus Mc Cleaft wrote:
FWIW, my system is amd64 with 1 G of memory, which the page implies is
insufficient. Is it really?
This may be purely subjective, as I have never bench marked the speeds,
but
when I was first testing zfs on a i386 machine with 1gig ram, I thought the
performance was mediocre. However, when I loaded the system on a quad core -
core2 with 8 gigs ram, I was quite impressed. I put localized changes in my
/boot/loader.conf to give the kernel more breathing room and disabled the
prefetch for zfs.
#more loader.conf
vm.kmem_size_max="1073741824"
vm.kmem_size="1073741824"
vfs.zfs.prefetch_disable=1
I was somewhat confused by the suggestions on the wiki. Do the kmem_size
sysctls affect the allocation of *memory* or of *address space*? It seems
a bit much to reserve 1 G of memory solely for the use of the kernel,
expecially in my case when that's all I have :) But on amd64, it's
welcome to have terabytes of address space if it will help.
The best advice I can give is for you to find an old machine and
test-bed zfs
for yourself. I personally have been pleased with it and It has saved my
machines data 4 times already (dieing hardware, unexpected power bounces, etc)
Sure, but if my "new" machine isn't studly enough to run it, there's no
hope for an old machine. So I'm trying to figure out what I actually
need.
--
Nate Eldredge
[EMAIL PROTECTED]
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