From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: Ethernet bridge performance Date: Sun, 10 Aug 2003 11:13:14 -0700 Sender: netdev-bounce@oss.sgi.com Message-ID: <3F368B3A.3070009@candelatech.com> References: <3F3217E7.2080903@allot.com> <3F3284EA.5050406@candelatech.com> <3F328A0F.3040005@allot.com> <16178.41976.3643.584516@robur.slu.se> <3F3601F3.6000001@allot.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: Robert Olsson , netdev@oss.sgi.com, "Feldman, Scott" Return-path: To: Felix Radensky In-Reply-To: <3F3601F3.6000001@allot.com> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Felix Radensky wrote: > I've mentioned in my first post that there are zero drops at driver level > (as shown by ifconfig). I'm also using IRQ affinity feature, binding > interrupts > of eth0 and eth1 to CPU0, so I guess NIC ring RX/TX size, link HW_FLOW > control > and affinity are not my problems. Maybe try un-binding the cpus, or binding them to different procs? > > Speaking of checksumming. This can be a problem indeed. ethtool -S shows > a lot > of rx_csum_offload errors. Scott, what could possibly be a problem ? The > NIC > is dual port 82546, driver is 5.1.13-k1. Why would a bridge be checksumming anything? > > I've failed to find a discussion about ksoftird priority. Can someone > please > provide a link. I've increased my performance by setting softirqd priority to -18, but since you seem to be dropping someplace other than the driver, I'm not sure that will help. > > Thanks a lot. > > Felix. > -- Ben Greear Candela Technologies Inc http://www.candelatech.com