From owner-freebsd-performance@FreeBSD.ORG Sat Jan 15 00:53:41 2005 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 286B416A4CE for ; Sat, 15 Jan 2005 00:53:41 +0000 (GMT) Received: from smtp815.mail.sc5.yahoo.com (smtp815.mail.sc5.yahoo.com [66.163.170.1]) by mx1.FreeBSD.org (Postfix) with SMTP id E9A6543D31 for ; Sat, 15 Jan 2005 00:53:40 +0000 (GMT) (envelope-from jin@george.lbl.gov) Received: from unknown (HELO ?192.168.2.10?) (jinmtb@sbcglobal.net@68.127.148.172 with plain) by smtp815.mail.sc5.yahoo.com with SMTP; 15 Jan 2005 00:53:40 -0000 Message-ID: <41E869CD.8010001@george.lbl.gov> Date: Fri, 14 Jan 2005 16:54:37 -0800 From: "Jin Guojun [VFFS]" User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.2) Gecko/20040912 X-Accept-Language: zh, zh-CN, en MIME-Version: 1.0 To: "Eddie Oleary (BH/LMI)" References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: "'freebsd-performance@freebsd.org'" Subject: Re: Tool for testing Concurrent TCP Streams X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 15 Jan 2005 00:53:41 -0000 Eddie Oleary (BH/LMI) wrote: >A Chairde, > > > Can anybody point me to a tool that will allow me to generate 15,000 + concurrent TCP streams as I want to test a system , and see how many concurrent streams >the client can handle before stopping. > > iperf is a such tool, but limitation may occur at No. of file descriptors, sockets, and/or threads, which is most likely the bottleneck. -- ------------ Jin Guojun ----------- v --- jin@george.lbl.gov --- Distributed Systems Department http://www.dsd.lbl.gov/~jin Lawrence Berkeley National Laboratory, Berkeley, CA 94720