From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linhaifeng Subject: ixgbe:about latency Date: Fri, 6 Feb 2015 13:37:03 +0800 Message-ID: <54D452FF.3080005@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: "dpdk >> dev-VfR2kkLFssw@public.gmane.org" Return-path: 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" Hi, I used l2fwd to test ixgbe PMD's latency (packet length is 64 bytes) found an interesting thing that latency is about 22us when tx bits rate is 4M and latency is 103us when tx bits rate is 5M. Who can tell me why?Is it a bug? Thank you very much! -- Regards, Haifeng