From owner-freebsd-performance@FreeBSD.ORG Wed Jul 30 05:38:55 2008 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BB20E106566C for ; Wed, 30 Jul 2008 05:38:55 +0000 (UTC) (envelope-from astrange@ithinksw.com) Received: from fmailhost02.isp.att.net (fmailhost02.isp.att.net [207.115.11.52]) by mx1.freebsd.org (Postfix) with ESMTP id AB0A98FC12 for ; Wed, 30 Jul 2008 05:38:55 +0000 (UTC) (envelope-from astrange@ithinksw.com) Received: from [10.0.1.3] (adsl-232-6-168.asm.bellsouth.net[74.232.6.168]) by isp.att.net (frfwmhc02) with SMTP id <20080730053851H02000t566e>; Wed, 30 Jul 2008 05:38:54 +0000 X-Originating-IP: [74.232.6.168] Message-Id: From: Alexander Strange To: freebsd-performance@freebsd.org In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v926) Date: Wed, 30 Jul 2008 01:38:50 -0400 References: <31AFE70B-CE45-42DE-97C7-AFF96383C6E2@chittenden.org> X-Mailer: Apple Mail (2.926) Subject: Re: Large number of http connections immediately dropped X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2008 05:38:55 -0000 On Jul 21, 2008, at 3:53 PM, Ivan Voras wrote: > Alexander Strange wrote: > >> And there's no firewalls or packet shapers in front of it. > > How about on it? Do you run ipfw? No, I wouldn't answer a question so specifically like that. We didn't see this problem after recompiling without SMP support and waiting for a day or two, but that immediately brought the load average up to around 50 and made it much slower, so that's clearly not a solution. It also really doesn't make me look forward to debugging it... (Disabling net.isr.direct and some other things didn't seem to have any effect)