From owner-freebsd-performance@FreeBSD.ORG Fri Mar 18 17:06:37 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 CB16E16A4CE for ; Fri, 18 Mar 2005 17:06:37 +0000 (GMT) Received: from dumballah.tvnet.hu (dumballah.tvnet.hu [195.38.96.23]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1B81043D48 for ; Fri, 18 Mar 2005 17:06:37 +0000 (GMT) (envelope-from oxygen@field.hu) Received: from localhost (localhost.localdomain [127.0.0.1]) by dumballah.tvnet.hu (Postfix) with ESMTP id 6F39610178B for ; Fri, 18 Mar 2005 18:06:35 +0100 (CET) Received: from dumballah.tvnet.hu ([127.0.0.1]) by localhost (dumballah.tvnet.hu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 27018-12 for ; Fri, 18 Mar 2005 18:06:35 +0100 (CET) Received: from oxy (adsl-1-90.pool.tvnet.hu [195.38.103.90]) by dumballah.tvnet.hu (Postfix) with SMTP id EEE12101773 for ; Fri, 18 Mar 2005 18:06:34 +0100 (CET) Message-ID: <000501c52bdc$d9970600$0201a8c0@oxy> From: "Oxygen" To: Date: Fri, 18 Mar 2005 18:06:39 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-2"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2527 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 X-Virus-Scanned: by amavisd-new at tvnet.hu X-Mailman-Approved-At: Sat, 19 Mar 2005 06:29:51 +0000 Subject: mbuf underrun, zombie process 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: Fri, 18 Mar 2005 17:06:37 -0000 hi! i hope i'm writin' to the right list this time.. my problem is the following: my server has high traffic on 100mbit dedicated line (around 10-11,5mb/s all day) with approx ~100-120 tcp connection. the nic is an intel pro 100, used with polling. now..when i set my data proxy's tcp window size to optimal, the network traffic dies in 2-3hours and the process become zombie, can't even kill. when i use small or large tcp window size the data proxy is stable, however the traffic is not good, dsl users complain, high speed copy is slow, etc. i don't really know what to do, what sysctl should increase or anything, if anyone had same problem, please post.. my machine is a pc, amd 2000+, around 50-60% used cpu, 512 ram and this is the only high load process. i changed couple sysctl settings: kern.ipc.nmbclusters=32768 kern.polling.enable=1 kern.ipc.somaxconn=4096 net.inet.udp.maxdgram=32768 net.inet.tcp.inflight.enable=0 net.inet.ip.portrange.randomized=0 ps: i tried to increase nmbclusters (65536, 131072), increased somaxconn (8192) and tcp.recvspace/sendspace to 65536, but didn't helped.