From owner-freebsd-net Mon Jul 30 14:24:22 2001 Delivered-To: freebsd-net@freebsd.org Received: from aries.ai.net (aries.ai.net [205.134.163.4]) by hub.freebsd.org (Postfix) with ESMTP id B245337B406 for ; Mon, 30 Jul 2001 14:24:19 -0700 (PDT) (envelope-from deepak@ai.net) Received: from blood (adsl-138-88-48-20.bellatlantic.net [138.88.48.20]) by aries.ai.net (8.9.3/8.9.3) with SMTP id RAA29101; Mon, 30 Jul 2001 17:30:42 -0400 (EDT) (envelope-from deepak@ai.net) Reply-To: From: "Deepak Jain" To: "Mike Wade" , Subject: RE: FreeBSD 4.3 -> Windows 2000 Network Performance Date: Mon, 30 Jul 2001 17:28:13 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MIMEOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Importance: Normal In-Reply-To: Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Have you tried the Windows 2000 -> Windows 2000 scenario? Deepak Jain AiNET -----Original Message----- From: owner-freebsd-net@FreeBSD.ORG [mailto:owner-freebsd-net@FreeBSD.ORG]On Behalf Of Mike Wade Sent: Monday, July 30, 2001 5:20 PM To: freebsd-net@FreeBSD.ORG Subject: FreeBSD 4.3 -> Windows 2000 Network Performance I'm serving several Windows 2000 clients from several FreeBSD 4.3 servers and I'm running into a performance bottleneck somewhere which appears to be on the Windows 2000 side of things. Performance w/ FreeBSD -> FreeBSD is great! Hardware: * Intel 2x1 Ghz CPUs * 1 gig of RAM * Extreme Summit 1i w/ Copper and SX Interfaces Performance w/ ttcp (for UNIX + Win32): FreeBSD 4.3 + Netgear 622T -> FreeBSD 4.3 + Netgear 622T = 875 Mbps FreeBSD 4.3 + Netgear 622T -> Windows 2000 + Netgear 622T = 350 Mbps FreeBSD 4.3 + Netgear 622T -> Windows 2000 + 3Com 3c985-SX = 350 Mbps I've tried running multiple instances (overlapping) of ttcp w/ no performance increases (ie: each instance halfs thruput) and I've tried tweaking the following on FreeBSD with no results: sysctl -w net.inet.tcp.delayed_ack=0 sysctl -w net.inet.tcp.sendspace=65535 sysctl -w net.inet.tcp.recvspace=65535 Does anyone have any opinions on how to tweak the performance on either end? Thanks in advance! --- Mike Wade (mwade@st3.com) Network Engineer To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message