From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Acker Subject: Re: 100Mbit ethernet performance on embedded devices Date: Wed, 02 Sep 2009 15:35:08 -0400 Message-ID: <4A9EC8EC.4030006@roinet.com> References: <20090819145057.GA25400@sig21.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090819145057.GA25400@sig21.net> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Johannes Stezenbach Cc: linux-embedded@vger.kernel.org, netdev@vger.kernel.org Johannes Stezenbach wrote: > What I'm interested in are some numbers for similar hardware, > to find out if my hardware and/or ethernet driver can be improved, > or if the CPU will always be the limiting factor. > I'd also be interested to know if hardware checksumming > support would improve throughput noticably in such a system, > or if it is only useful for 1Gbit and above. > > Did anyone actually manage to get close to 100Mbit/sec > with similar CPU resources? I have a pico station, http://ubnt.com/products/picostation.php with Atheros MIPS 4KC @ 180MHz. Iperf on this device gives 46.0 Mbits/sec sending TCP from a PC to the device and 36.2 Mbits/sec sending TCP from the device to a PC. The NIC is part of the Atheros chipset so PCI is not involved. -ack