From owner-freebsd-stable Mon Dec 13 11:45:21 1999 Delivered-To: freebsd-stable@freebsd.org Received: from oracle.dsuper.net (oracle.dsuper.net [205.205.255.1]) by hub.freebsd.org (Postfix) with ESMTP id 11550151A1 for ; Mon, 13 Dec 1999 11:45:19 -0800 (PST) (envelope-from bmilekic@dsuper.net) Received: from oracle.dsuper.net (oracle.dsuper.net [205.205.255.1]) by oracle.dsuper.net (8.9.3/8.9.3) with ESMTP id OAA30486; Mon, 13 Dec 1999 14:45:06 -0500 (EST) Date: Mon, 13 Dec 1999 14:45:05 -0500 (EST) From: Bosko Milekic To: Doug White Cc: David Greenman , Tom , Greg Prosser , freebsd Subject: Re: SYN Hardening patches? / SYN Code in 3.4-RC In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 13 Dec 1999, Doug White wrote: !> !>Because it doesn't make sense to separate it out? maxusers is a good !>general sizing knob; it should size everything that's related to server !>capacity. You should override the maxuser-based calculations IFF you know !>the calculated number isn't enough, even at maxusers 128. !> !>We have hard-core MDAs that get a 'options NMBCLUSTERS=16384' and !>'maxusers 128' based on real-world statistics. These machines routinely !>peak out at 10K mbuf clusters and 22MBytes of network memory. With the !>default settings they wouldn't last 10 minutes. !> !>And even with 16K mbufs they still die when large parts of the Net go !>away. !> !>Doug White | FreeBSD: The Power to Serve !>dwhite@resnet.uoregon.edu | www.FreeBSD.org !> Well, it appears I missed a TUNABLE_INT_DECL which twiddles with nmbufs as opposed to MAXUSERS, when NMBCLUSTERS is defined. My mistake! Thanks to all who pointed it out. Bosko. -- Bosko Milekic To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message