Date: Fri, 25 Jan 2002 09:58:57 -0800 From: David Greenman <dg@root.com> To: Scott Gerhardt <scott@gerhardt-it.com> Cc: bv@wjv.com, Jeff Lasman <jblists@nobaloney.net>, Tom Samplonius <tom@sdf.com>, freebsd-isp@FreeBSD.ORG Subject: Re: Solaris vs. FreeBSD in High Traffic Environments Message-ID: <20020125095857.C67365@nexus.root.com> In-Reply-To: <KPEMLBLEMPMHGLJOCDEGIEILDKAA.scott@gerhardt-it.com>; from scott@gerhardt-it.com on Fri, Jan 25, 2002 at 11:52:58AM -0600 References: <20020125065419.GE35812@wjv.com> <KPEMLBLEMPMHGLJOCDEGIEILDKAA.scott@gerhardt-it.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> > 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020125095857.C67365>