From owner-freebsd-net@FreeBSD.ORG Sun Nov 26 20:42:12 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 48C1016A503 for ; Sun, 26 Nov 2006 20:42:12 +0000 (UTC) (envelope-from yar@comp.chem.msu.su) Received: from comp.chem.msu.su (comp.chem.msu.su [158.250.32.97]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8368043D9A for ; Sun, 26 Nov 2006 20:25:16 +0000 (GMT) (envelope-from yar@comp.chem.msu.su) Received: from comp.chem.msu.su (localhost [127.0.0.1]) by comp.chem.msu.su (8.13.4/8.13.3) with ESMTP id kAQKPuWT067681; Sun, 26 Nov 2006 23:25:56 +0300 (MSK) (envelope-from yar@comp.chem.msu.su) Received: (from yar@localhost) by comp.chem.msu.su (8.13.4/8.13.3/Submit) id kAQKPt6C067680; Sun, 26 Nov 2006 23:25:55 +0300 (MSK) (envelope-from yar) Date: Sun, 26 Nov 2006 23:25:55 +0300 From: Yar Tikhiy To: Anton Yuzhaninov Message-ID: <20061126202555.GC66009@comp.chem.msu.su> References: <0174846.20061123150509@citrin.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0174846.20061123150509@citrin.ru> User-Agent: Mutt/1.5.9i Cc: freebsd-net@freebsd.org Subject: Re: zero kern.ipc.nsfbufs on amd64 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Nov 2006 20:42:12 -0000 On Thu, Nov 23, 2006 at 03:05:09PM +0300, Anton Yuzhaninov wrote: > Hello All, > > Why on AMD64 kern.ipc.nsfbufs always zero: > > # sysctl kern.ipc | fgrep nsfbufs > kern.ipc.nsfbufsused: 0 > kern.ipc.nsfbufspeak: 0 > kern.ipc.nsfbufs: 0 > # netstat -m | fgrep sfbufs > 0/0/0 sfbufs in use (current/peak/max) > 0 requests for sfbufs denied > 0 requests for sfbufs delayed > # uname -srim > FreeBSD 6.0-RELEASE amd64 GENERIC > > Is this mean, that on amd64 nsfbufs have no limit? amd64 and ia64 neither need nor use nsfbufs. See http://www.usenix.org/events//usenix05/tech/general/full_papers/elmeleegy/elmeleegy_html/index.html -- Yar