From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vincent JARDIN Subject: Re: L3FWD LPM IP lookup performance question Date: Tue, 24 Sep 2013 17:53:22 +0200 Message-ID: <5241B572.5090009@6wind.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: dev-VfR2kkLFssw@public.gmane.org Return-path: In-Reply-To: List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" I do not know any open source implementation of an efficient LPM. FYI, some data with a commercial one: -> up to 160Mpps, the bottleneck was the IOs, not the CPU. http://www.6wind.com/products/6windgate-protocols/ip-forwarding/ Best regards, Vincent On 24/09/2013 15:53, Jun Han wrote: > Hello, > > We are trying to benchmark L3FWD application and have a question regarding > the IP lookup algorithm as we expect the bottleneck to be at the lookup. > Could someone let us know how efficient the lookup algorithm that L3FWD is > using (e.g, LPM)? We are asking because we want to obtain highest L3 > forwarding performance number, and we might need to change the lookup > method if the current LPM method is not as efficient. > > Thank you very much, > > Jun >