Adrian, excellent response .. I would also like to mention the following: cheapest solution is basic round robin to multiple web host
if you have the time do a statistical report of all the files. what you are looking for is the most common block size ( 1024 bytes, 2048 .... ) for all the files, and the most common read files. thereafter you blend to reduce the amount of read I/O calls to the hard drives. Now do a small supplement, take about 100 meg of ram, and convert it into a ram drive, mount it and copy over the most common requested images, and the block size for that is 512 ( or smaller ), take from certain aspects and add to the other. we took a site that had about 52000 web pages ( about 12k each ) placed the first 6 layers of it into a ram drive and the rest to the regular directory we severed more than 500k pages per day from 1 server ( peak was about 55K pages per hour ). that was also a tuned server ... 500mhz Zeon cpu, 1.5 gig of ram and a lot of basic tuning for that site. anyway best of luck Mike Windows ASP .NET Cold Fusion Web Hosting Services www.adehost.com > -----Original Message----- > From: Adrian Chadd [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 16, 2003 7:09 PM > To: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED] > Subject: [isp-caching] Re: Questions on caching or load distributing. > > > On Sun, Mar 16, 2003, William Devine, II wrote: > > List, > > > > I currently have a client that serves files and images on other > websites. > > They get around 8M-9Million image views per day with anywhere from 1 to > > 3Million of them being unique views, so each file might be > viewed anywhere > > from once per day to some upwards of 5k times per day. Their present > > system is getting highly overloaded and I'm looking for methods to > > accelerate this. > > > > They presently serve on Linux 2.4.18-4smp from Redhat 7.3, Apache 1.3.X, > > dual 1.8Ghz Xeons, 2Gigs RAM and a 3Ware ATA 100 RAID > controller with Four > > 80Gig 7200RPM ATA100 Drives in a RAID 5 array (1 hot spare) > > The two options I'm looking at are either to make this sytem a > 'file server' > > for a bank of web servers, or as the central webserver for a > bank of caching > > proxy servers. Each of the two Servers each have one 2.4Ghz > processor, 2GB > > RAM and one 18Gig Ultra160 10K RPM SCSI Drives. (the > hardware was already > > purchased by the client and awaiting deployment.) > > Hi, > > Are they serving the images out of apache too? > if so, try this: > > * setup images.domain.com on a seperate IP > * move all images into a virtual server under there > * then, once that all works, install thttpd or boa (light-weight single > process webservers, great for serving lots of static content!) just to > run the images.domain.com webserver > > This should reduce the load on the webserver quite dramatically. > You might find he doesn't need to run a cluster - or perhaps moving > the images onto a seperate server will free up enough resources to keep > things going. > > I'd consider this before looking at a clustered setup. > > (FYI: I've had excellent results with very image-intensive websites.) > > > > > Adrian > > -- > Adrian Chadd "It shouldn't take an hour and a half for > <[EMAIL PROTECTED]> "any woman to take a bath." > - Captain Jerk, Women and .. > > > > ------------------------ANNOUNCEMENT----------------------------------- > ----------------------------------------------------------------------- > ISPCON Spring 2003 April 23-25, Baltimore, MD www.ispcon.com > The Definitive Event for all wired and wireless service providers. > ----------------------------------------------------------------------- > ----------------------------------------------------------------------- > > ____________ The ISP-CACHING Discussion List ___________ > To Join: mailto:[EMAIL PROTECTED] > To Remove: mailto:[EMAIL PROTECTED] > Archives: http://isp-lists.isp-planet.com/isp-caching/archives/ > ------------------------ANNOUNCEMENT----------------------------------- ----------------------------------------------------------------------- ISPCON Spring 2003 April 23-25, Baltimore, MD www.ispcon.com The Definitive Event for all wired and wireless service providers. ----------------------------------------------------------------------- ----------------------------------------------------------------------- ____________ The ISP-CACHING Discussion List ___________ To Join: mailto:[EMAIL PROTECTED] To Remove: mailto:[EMAIL PROTECTED] Archives: http://isp-lists.isp-planet.com/isp-caching/archives/
