Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rice!uw-beaver!tera.com!doc From: doc@tera.com (Dan Cummings) Newsgroups: comp.sys.super Subject: Re: I/O Message-ID: <1990June14.645408090@tera.com> Date: 15 Jun 90 00:01:30 GMT References: <27502@metropolis.super.ORG> Sender: news@tera.com Organization: Tera Computer Company Lines: 17 Advances in I/O performance will lag behind advances in CPU speed for some time to come but there is rather a lot that can be done with current technology and current 3600 RPM disks to improve I/O performance. Just as a start I would refer interested parties to the papers coming from John Ousterhout and his group at UC Berkeley on Log Structured File Systems and RAIDs (Redundant Array of Inexpensive Disks). After digesting all of this information I invite you to come up to Seattle and see what we are doing at Tera Computer for high speed I/O. Another good stab at increasing I/O speed is found in the LD cache approach used in Unicos on the Cray YMP. Don't give up yet! Dan Cummings doc@tera.com