From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030470AbWAGPFH (ORCPT ); Sat, 7 Jan 2006 10:05:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030471AbWAGPFH (ORCPT ); Sat, 7 Jan 2006 10:05:07 -0500 Received: from 167.imtp.Ilyichevsk.Odessa.UA ([195.66.192.167]:30345 "HELO ilport.com.ua") by vger.kernel.org with SMTP id S1030470AbWAGPFF (ORCPT ); Sat, 7 Jan 2006 10:05:05 -0500 From: Denis Vlasenko To: kernel coder Subject: Re: Almost 80% of UDP packets dropped Date: Sat, 7 Jan 2006 17:04:52 +0200 User-Agent: KMail/1.8.2 Cc: linux-kernel@vger.kernel.org References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200601071704.52833.vda@ilport.com.ua> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Saturday 07 January 2006 09:03, kernel coder wrote: > hi, > I was trying to measure the UDP reception speed on my borad which > has MIPS 4kc processor with 133 MHZ speed.I was transfering 10mb file > from intel pentium 4 machine to MIPS board,but the recieved file was > only 900kB. UDP is connectionless. There is no way for sender to know that it must stop sending UDP packets because receiver cannot keep up. If sender and your network is producing and delivering UDP packets faster than receiver can consume them, packets will be lost. Use TCP instead. -- vda