From owner-freebsd-questions@FreeBSD.ORG Fri Jul 25 09:57:39 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0505E37B401 for ; Fri, 25 Jul 2003 09:57:39 -0700 (PDT) Received: from telcommail.net (mail.telcommail.net [204.0.139.34]) by mx1.FreeBSD.org (Postfix) with ESMTP id 33FF043FBF for ; Fri, 25 Jul 2003 09:57:38 -0700 (PDT) (envelope-from akachler@telcom.net) Received: from telcom.net (arie.telcom.net [216.118.129.203]) by telcommail.net (8.12.9/8.12.9) with ESMTP id h6PGuPWE068720 for ; Fri, 25 Jul 2003 12:56:26 -0400 (EDT) Message-ID: <3F216184.5080007@telcom.net> Date: Fri, 25 Jul 2003 12:57:40 -0400 From: Arie Kachler User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: udp packets dropping X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2003 16:57:39 -0000 Hello, I have a DNS server with a lot of traffic. After just a couple of minutes of resetting the netstat -s counters, I get the following output: 130670 datagrams received 0 with incomplete header 0 with bad data length field 1 with bad checksum 30 with no checksum 0 dropped due to no socket 12 broadcast/multicast datagrams dropped due to no socket 4226 dropped due to full socket buffers 0 not for hashed pcb 126431 delivered 136753 datagrams output As time goes by, the "dropped due to full socket buffers" number goes up. I have increased the sysctl variable net.inet.udp.recvspace to 100000, up from about 40000. This did not make any difference, the number goes up with time. The server is running FreeBSD 4.6 RELEASE with Bind 9.2.2. I went through the newsgroups and did not find any solutions to this problem. Any help will be greatly appreciated. Arie Kachler SysAdmin/Telcom.Net