From owner-freebsd-questions Fri Jun 22 14:54: 9 2001 Delivered-To: freebsd-questions@freebsd.org Received: from cqos1.cqos.com (ppp-64-160-241-125.cqos.com [64.160.241.125]) by hub.freebsd.org (Postfix) with ESMTP id 6FB7537B408 for ; Fri, 22 Jun 2001 14:54:04 -0700 (PDT) (envelope-from Sknox@CQOS.COM) Received: by CQOS1 with Internet Mail Service (5.5.2448.0) id ; Fri, 22 Jun 2001 14:54:02 -0700 Message-ID: <550B4D6FA776D3118D1D00902799170C60877A@CQOS1> From: Sean Knox To: "FreeBSD Questions (E-mail)" Cc: Vincent Torres , John Deatherage Subject: mail/DNS server tweaks? Date: Fri, 22 Jun 2001 14:54:01 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2448.0) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hello all, I've read several pages regarding tweaking the kernel and various sysctls to improve performance. I'm running a Exim mail server/Bind DNS server. I'd like to get advice from those in the community regarding further increasing performance. Currently, I've enabled SoftUpdates, increased maxusers to 128, remove some unnecessary drivers from the kernel, created a large, separate partition for /var, and increased TCP send/receive windows to 32K. What other performance tweaks do you all suggest? In fact, is increasing TCP send/receive windows to a higher value really a good idea in this case? I've read that increasing the window size(s) makes more efficient usage of large transfers, i.e. ftp. I figure since DNS and mail are generally dealing with many, small connections, this might not yield beneficial results. Comments? Sean To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message