Well, Charlie, <plug mode> If you had fired up The DPMonitor, even in Evaluation 10 day free trail mode, and had an Agent running before & after you did the raid 5 to raid 1+0 switch, you would have been able to precisely measure and graphical compare I/O improvements, as well as all the other improvements throughout your platform as a result of the change.
Try it, you'll like it. </plig mode> Regards, Scott Systems Engineer at large ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, April 26, 2004 6:50 AM Subject: Re: How far can U2 scale? Ross, Actually, we just had a reason to care. We just changed from raid 5 to raid 1+0, and wanted to determine how and where we achieved performance increase. We weren't interested in knowing how we compared to a museum machine, but in how we compared to the weekend before. We did see quite a performance increase in disk related functions, but it's rather difficult to quantify just how much faster it is overall for any given user in a normal work day. Regards, Charlie Noah Inland Truck Parts [EMAIL PROTECTED] writes: So, assuming the Spirit was a 1x machine (I seem to recall a small DEC 1400 (?) being a 2x - sooo many years) if the spirit could complete 10,000 "transactions" in a quanta of time, and the new machine finishes the same task (approximating real world environment) in some fraction of this time, then it should be fairly straight forward to work out the X rating. I seem to recall that the "omnipresent" CUBS benchmark was trying to achieve the same thing ..... they may even have some old benchmarks from a known "X rating" machine, allowing an approximation of modern equipment to be made --> not that I think anyone really cares these days, as X tends to be sufficiently large ! Ross Ferris Stamina Software Visage â an Evolution in Software Development -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users
