From owner-freebsd-isp Fri Jan 25 10:14: 1 2002 Delivered-To: freebsd-isp@freebsd.org Received: from root.com (root.com [209.102.106.178]) by hub.freebsd.org (Postfix) with ESMTP id BF5B437B423 for ; Fri, 25 Jan 2002 10:13:42 -0800 (PST) Received: (from dg@localhost) by root.com (8.11.2/8.11.2) id g0PHwvF67616; Fri, 25 Jan 2002 09:58:57 -0800 (PST) (envelope-from dg) Date: Fri, 25 Jan 2002 09:58:57 -0800 From: David Greenman To: Scott Gerhardt Cc: bv@wjv.com, Jeff Lasman , Tom Samplonius , freebsd-isp@FreeBSD.ORG Subject: Re: Solaris vs. FreeBSD in High Traffic Environments Message-ID: <20020125095857.C67365@nexus.root.com> References: <20020125065419.GE35812@wjv.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: ; from scott@gerhardt-it.com on Fri, Jan 25, 2002 at 11:52:58AM -0600 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > > Last time I checked the data stream was about $450 for 1.5Mb 90% > > useage. [about $300Mb]. > >OT > >Well a T1 (1.544Mb/s) completely saturated 24/7 would yield 488GB/mo in >theory. This would be ok for straignt data transfer such as FTP etc., but >in a hosting environment where people are waiting for pages to load this >would be unacceptable for the end user during peak times. Web traffic is >extremely variable in nature, and burstable vs. total tranfer are two >different beasts. I don't imagine that there are too many people surfing at >3:00am. :-) > >Just my two bits worth. Yeah, typical day-high to day-low ratio is around 3:1, so a fully used (100% for 24 hours) circuit would be about 200% oversubscribed during the daytime. ...this will suck no matter sort of traffic goes over it. One general rule of thumb is to plan to get only about 65-70% of whatever circuit capacity you're buying in order to allow for the daytime peaks without congestion. This might seem to contradict the 3:1 ratio, but actually the nighttime low is fairly short compared to the daytime highs, so circuit utilization is better than it might appear. 65% of 488GB is about 317GB. Oh, and to those who think that 1TB a month is a "high traffic" site...my companies build and operate servers that can do 100TB a month, so 1TB sounds like low traffic to me. :-) -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com President, Download Technologies, Inc. - http://www.downloadtech.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message