Performance Issue(s) with Release Candidate 1 amd64

[pcjackson06]

Here's my config:

FreeNAS-8.0.1-RC1-amd64 (7508)
Core(TM) i3 CPU 540 @ 3.07GHz
8GB RAM
SuperMicro X8SIL
Three Syba PCI Express SATA II 4 x Ports RAID Controller Card SY-PEX40008
Nine CFI-B53PM 5 Port Backplane (SiI3726)
45 3TB Hitachi HD's
Three volumes (Vol1, Vol2 and Vol3) each configure with 14 drive(s) + spare ZFS zraid2

Here's my issue:

Using AFP, we are getting sustained transfer's of 84 mb/s on gigabit Ethernet which isn't bad. However, the transfer will time out consistently and then start back up. We are using an on-board NIC, and I'm wondering if that is the issue OR if this is a bug.

 

[mattkapp]

I'm seeing the same thing with AFP. The transfer will spike to higher speeds after a while, but then slow way down to 10s of kbs, then suddenly spike back up to full network speed for a few seconds then back down for a minute or so.

It was way faster and consistent on 8.04 beta and on ver. 7

My config:
FreeNAS-8.0.1-RC1-amd64 (7508)
Intel Core2Duo CPU 6300 @ 1.86GHz
8GB RAM
3 1.5TB WD Drives - ZFS Raidz5 through on board Sata (Tested with PCI Sata card and had same speeds)
Netgear Gigabit Nic