> From: Baker Hughes > Does anyone have any real life examples of performance > gains from converting your large file to 64 bit files? > > Does anyone have a performance comparison of 64 bit > files vs. distributed files. > > I wonder if a 4 terabyte file responds better/faster > than a distributed/part file? SELECTs, WRITES, other > access. > > UV 10.2 - I guess UD has the same?
One way to do this sort of testing yourself is to make use of testing facilities provided by hardware vendors. I know HP and IBM used to provide this service and I believe they still do. For example, when I was working at Pick Systems we would benchmark new releases of D3 at the IBM RDC in San Mateo, California. We'd run D3 with 10 thousand users, with terabytes of data, and as much memory and CPU power as was available. It was quite an experience and the result was good marketing material both for Pick Systems and for IBM. I suspect IBM would be open (for free or fee) to allowing a VAR or large end-user to load Universe or Unidata at an RDC to run a variety of tests so that you can get some real numbers on distributed files, indexes, and other configuration settings that affect performance. My recommendation would be for a VAR to do this, do a lot of different kinds of tests, and get a lot of numbers. (*grinning and waiting for the group to explode*) And then they can sell their numbers to large sites to compensate them for their efforts. Actually, this would be a good project for Spectrum. Tony Gravagno Nebula Research and Development TG@ remove.pleaseNebula-RnD.com remove.pleaseNebula-RnD.com/blog Visit PickWiki.com! Contribute! _______________________________________________ U2-Users mailing list [email protected] http://listserver.u2ug.org/mailman/listinfo/u2-users
