From owner-freebsd-hackers@FreeBSD.ORG Fri Mar 8 00:12:10 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id D9DAA2D4 for ; Fri, 8 Mar 2013 00:12:10 +0000 (UTC) (envelope-from Devin.Teske@fisglobal.com) Received: from mx1.fisglobal.com (mx1.fisglobal.com [199.200.24.190]) by mx1.freebsd.org (Postfix) with ESMTP id AC2AFCBB for ; Fri, 8 Mar 2013 00:12:10 +0000 (UTC) Received: from smtp.fisglobal.com ([10.132.206.16]) by ltcfislmsgpa06.fnfis.com (8.14.5/8.14.5) with ESMTP id r280C9UJ002473 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Thu, 7 Mar 2013 18:12:09 -0600 Received: from dtwin (10.242.182.25) by smtp.fisglobal.com (10.132.206.16) with Microsoft SMTP Server (TLS) id 14.2.309.2; Thu, 7 Mar 2013 18:12:08 -0600 From: Sender: Devin Teske To: "'Wojciech Puchar'" , References: In-Reply-To: Subject: RE: lots of network interfaces Date: Thu, 7 Mar 2013 16:11:37 -0800 Message-ID: <031201ce1b91$841b90d0$8c52b270$@freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQKpwYVpQ9wq31fj1Xr8NqKcq8vI85bjnyWg Content-Language: en-us X-Originating-IP: [10.242.182.25] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.9.8327, 1.0.431, 0.0.0000 definitions=2013-03-07_09:2013-03-07,2013-03-07,1970-01-01 signatures=0 Cc: devin.teske@fisglobal.com X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Mar 2013 00:12:10 -0000 I decided to stress-test the netgraph(4) subsystem one day and was able to create 65530 interfaces before it produced an error, refusing to create another. At that point, the system was still usable, but... It took over an hour for ifconfig to list all the interfaces. Simply typing "ifconfig" with no arguments and pressing ENTER would start spewing information on-screen for over an hour before it finished. (so I'd say that there could be some optimizations made; but nonetheless impressive that the system was still very usable at that point, ifconfig aside). -- Devin > -----Original Message----- > From: owner-freebsd-hackers@freebsd.org [mailto:owner-freebsd- > hackers@freebsd.org] On Behalf Of Wojciech Puchar > Sent: Thursday, March 07, 2013 3:25 AM > To: freebsd-hackers@freebsd.org > Subject: lots of network interfaces > > are there any scalability limits in case of lots of network interfaces. > i am asking for ca 800 tun(4) interfaces active but no more than 250Mbit/s > over them total. > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" _____________ The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.