Re: Reader Utility....

MIS Dept wrote: > > Mark D. Stock wrote: > > > > MS CARLEEN C AVANT wrote: > > > > > > Hi, > > > I am looking for information regarding the utility called > "reader". We > > > are > > > in the process of a migration from Informix 5.x to 7.x (also > migrating > > > to a > > > new hardware platform). We are basically doing a complete > redesign. > > > Our > > > hardware consists of a Sun Enterprise 4000 utilizing MultiPack > storage > > > capability and volume manager. We are currently trying to decide > the > > > "optimum" disk layout. We read that "reader is a scientific method > for > > > optimizing disk layout". We are curious regarding anyone's > > > knowledge/experience regarding this utility and the accuracy of > it's > > > results when all disk access will be going through a volume > manager. > > > > That's a VERY big description for such a simple utility, but you can > > learn all about it and many other utilities AND walk away with the > > source code if you attend the "OnLine DSA Performance Tuning" > course. > > Must be the newer classes . . . I don't remember it. It took me a while to find this comment! The notes are Feb 97, but I don't know when it was re-written. It used to be a two-day course before the re-write, it's now a four-day course. Cheers, -- Mark. +----------------------------------------------------------+-----------+ |Mark D. Stock - Informix SA http://www.informix.com |//////// /| |mailto:mdstock@informix.com FAQ http://www.iiug.org |///// / //| | +-----------------------------------+//// / ///| | Tel: +27 11 807 0313 |If it's slow, the users complain. |/// / ////| | Fax: +27 11 807 2594 |If it's fast, the users keep quiet.|// / /////| |Cell: +27 83 250 2325 |Therefore, "No news: travels fast"!|/ ////////| +----------------------+-----------------------------------+-----------+