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OK - Jim Here's the big picture... 1) AS/400's are damn good web servers - I've peaked @ 20,000 visitors a day with a single 270. Most of my problem was with Net.Commerce and older versions of it. 2) That same 270 can handle 800 simultaneous CGI requests, 2000 simultaneous Cached HTML requests... and I've come close to seeing those peaks. 3) Load balancing is a fact of life in the web world. IBM needs to make it more lucrative for people to do it. 30 270's pointing to the same back end RAIDED disk acting as web servers etc... is a great model to go by - but is not possible with current OS/400 unless you write/buy mirroring software between the boxes with mucho redundant disk. Most of the time with BIG web sites, they run out of bandwidth before they run out of CPU - another fact of life... Now a load balanced LPARed 840 with 32 processors pointing to a single chunk of disk - this I could reach my hands around!! I can send ALL of my Net.Data pointing to another server, and compile all my RPG arounf the DDM files... but I digress... 4) The AS/400 isn't the fastest kid on the block - but what the heck are you serving? Yahoo? E-Bay? When your back end server is AS/400 & you're building a B2B - do it on an AS/400! If you're trying to impress someone with FLASH etc... you can STILL use an AS/400 - but these cheep Linux boxes seem to do well (and the AS/400 is NOW doing linux!!) 5) E-commerce is a touchy subject with me - but look @ www.palmbeachjewelry.com - that box pops up... all RPG CGI routines running it & Net.Data... not too shabby... Check out my home site - www.as400nut.com - that's a SMALL as/400 - the Counter on the bottom is Net.Data - and I'm building some serious examples of Net.Data code for people to play with. That is an 18cpw box. When you talk WAS or Domino or ANY serious Unix based functionality - that's when the SERIOUS hardware needs to be considered. Java can bring a system w/out enough cylinders down! Firing up the Apache admin server on my system is like kicking it in the nuts, but the AS/400 doesn't fall down & clutch 'em - it plows onward and limps for a bit until all the Java has compiled & is in memory... then it levels out. Message: 3 From: Jim Damato <jdamato@dollargeneral.com> To: "'midrange-l@midrange.com'" <midrange-l@midrange.com> Subject: RE: Trivia: Processor MHz Date: Thu, 27 Dec 2001 15:33:38 -0600 Reply-To: midrange-l@midrange.com >Steve: >This is not trivial. The slow cpu of the iSeries prevents modern >programming languages from being used on our system. >Leif: (taken somewhat out of context) >Use the AS/400 for what it is good at. >Use the right tool for the job. Use an Intel >screamer for what it does best. I don't know if it boils down strictly to programming languages, but I know what Steve means. Even two and three year old dinosaur AS/400's are inadequate as web servers (or Domino app servers, etc.) because some online responses boil down to the speed of one processor. A single user transaction can require much, much more processing in an HTML or Java application. A 4550 CPW 740 might serve as a pathetic web server. A new 270 with a fraction of the CPW would blow the doors off the 740 in a broad range of newer technology applications. CPW is a measure of traditional AS/400 work. Processor MHz might be a more meaningful measure in some applications, but it has to be taken in context. MHz (or MIPS, etc.) "scores" do not compare one to one across chips. Still, it's as Leif suggested -- our PHB's want it dumbed down to one number. Remember when you'd buy a new stereo and your friends would ask, "How many WATTS?!" I don't, however, think you necessarily need to use an Intel screamer. There are a great number of new Intel, HP, Apple, IBM iSeries/pSeries, etc. processors that are fast enough to do the job. You don't have to buy the fastest if there are alternatives that more than meet your needs. -Jim James P. Damato Manager - Technical Administration Dollar General Corporation <mailto:jdamato@dollargeneral.com> Andrew Borts / Webmaster Seta Corporation 6400 East Rogers Circle Boca Raton, FL 33499 E-mail: Andrewb@setacorporation.com Corporate web site http://www.setacorporation.com E-Commerce web site http://www.palmbeachjewelry.com http://www.myfreeitems.com Voice: 561-994-2660 Ext. 2211 / Fax: 561-997-0774
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