Russ Price wrote:
Can you tell us the build
version of the opensolaris?
I'm currently on b134 (but I had the performance issues with 2009.06, b130,
b131, b132, and b133 as well).
I may end up swapping the Phenom II X2 550 with an Athlon II X4 630 that I've
put into another M4A785-M system. I noticed that the eight-disk scrub came
close to maxing out both cores of the Phenom - so it wouldn't hurt to have a
couple more cores in place of the extra cache and clock speed. However, even
with the CPU nearly pegged, it was still serving files smoothly - vastly better
than the rag-tag controller assortment.
If you're going to run a big array on OpenSolaris, it's a good idea to use a
real HBA instead of consumer-grade interfaces. :o) The nice thing about the
SASUC8I / SAS3081E-R is that, by default, it presents the array to the
operating system as individual drives - perfect for ZFS.
scrub: scrub completed after 1h33m with 0 errors on Thu Mar 11 19:17:01 2010
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
c11t1d0p1 ONLINE 0 0 0
c11t7d0p1 ONLINE 0 0 0
c11t6d0p1 ONLINE 0 0 0
c11t4d0p1 ONLINE 0 0 0
c11t0d0p1 ONLINE 0 0 0
c11t5d0p1 ONLINE 0 0 0
c11t2d0p1 ONLINE 0 0 0
c11t3d0p1 ONLINE 0 0 0
errors: No known data errors
In general, I would heartily agree with Russ, in that the 8-port
LSI-based PCI-E cards are very, very well worth the price. I'm a
satisfied user of the Marvell-based PCI-X cards, too (at least, since
the 2009.06 release).
That all said, I've had good experiences with the SiliconImage chips,
though that experience has been limited to the PCI/PCI-X versions
(3114/3124). They definitely are lower-end, though - I've never tried
hot-swapping a drive attached to a SilIm controller.
---
Since you mentioned it, do you have access to an Athlon II and Phenom II
at the same clock rate/core count? Would you be willing to test out a
couple of things? I'm trying to determine whether the extra L3 cache
on the Phenom makes any real difference for ZFS usage. As previously
mentioned, More Cores > Higher Clock rate, at least for NAS usage.
--
Erik Trimble
Java System Support
Mailstop: usca22-123
Phone: x17195
Santa Clara, CA
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