From owner-freebsd-hackers Wed Feb 2 8:13:28 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by builder.freebsd.org (Postfix) with ESMTP id C28BA409C for ; Wed, 2 Feb 2000 08:13:24 -0800 (PST) Received: (from dan@localhost) by dan.emsphone.com (8.9.3/8.9.3) id KAA32964; Wed, 2 Feb 2000 10:07:39 -0600 (CST) (envelope-from dan) Date: Wed, 2 Feb 2000 10:07:39 -0600 From: Dan Nelson To: Egervary Gergely Cc: hackers@FreeBSD.ORG Subject: Re: NMBCLUSTERS Message-ID: <20000202100739.B31919@dan.emsphone.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: ; from "Egervary Gergely" on Wed Feb 2 11:13:52 GMT 2000 X-OS: FreeBSD 4.0-CURRENT Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In the last episode (Feb 02), Egervary Gergely said: > what size of $SUBJECT should be used on a box with two _extremely_ > busy 100baseTX interfaces? Interface type/speed is less important than number of open sockets. I've got an NFS server with a 100mbit card in it that is pretty heavily used the whole day, and after 22 days of uptime, netstat -m shows: 72/596/2112 mbuf clusters in use (current/peak/max) That's just using whatever value of NMBCLUSTERS a 'maxusers 100' gives me. On the other hand, when the Star Wars trailers were released last year, I was a mirror site, and ran out of mbufs a couple times because I had a lot of backed-up FTP connections over a T1 link. Easiest way to determine what you need is to just let the system run for a while, and then rebuild the kernel with your NMBCLUSTERS set at your peak value + 50% . -- Dan Nelson dnelson@emsphone.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message