Re: Intel 10GbE Tuning under freebsd

2011-05-19 Thread K. Macy
> In the machine what PCIe speed does it state its using? What CPU's do you > have as to push closer to 10Gbps your going to need a quick machine. Good point. 5Gbps could indicate that the PCI-e slot is only negotiating 4x as opposed to 8x. -Kip ___ fre

Re: Intel 10GbE Tuning under freebsd

2011-05-19 Thread Steven Hartland
s Steve - Original Message - From: "William Salt" To: Sent: Thursday, May 19, 2011 2:52 PM Subject: Intel 10GbE Tuning under freebsd Hi All, I have just got a couple of 10GbE intel X520-DA2 cards to test. Im running freebsd 8.1 on a super micro intel xeon server,

Re: Intel 10GbE Tuning under freebsd

2011-05-19 Thread Kip Macy
Four very quick points: - Enabling flowtable can help provided you don't have a large (greater than a few thousand) number of peers. - I have a patch under review to cache the rtentry (L3) and llentry (L2) in the inpcb for TCP connections, which improves scaling at high packet rates. - You'll want

Re: Intel 10GbE Tuning under freebsd

2011-05-19 Thread Jack Vogel
Oh, another thought, LRO is not enabled by default, it causes problems when you are forwarding, but if you are just passing back to back traffic it helps enormously, so use ifconfig to enable it on the interface. Jack ___ freebsd-net@freebsd.org mailing

Re: Intel 10GbE Tuning under freebsd

2011-05-19 Thread Jack Vogel
First, get the latest driver if you are using the native 8.1 its way old. Second, make sure you're in a PCI Express 2.0 slot, at least 8x, and if you are using a consumer type system there are often slots that are not wired with as many lanes as you might think, so verify that. Oh, and remember, b

Intel 10GbE Tuning under freebsd

2011-05-19 Thread William Salt
Hi All, I have just got a couple of 10GbE intel X520-DA2 cards to test. Im running freebsd 8.1 on a super micro intel xeon server, and a hp core 2 duo workstation, both machines have 4gb of ram. Both are attached via sfp+ cables to a brocade turbo iron switch, which simply has jumbo frames