Mark posted a nice summary (pun intended). Just one clarification, OMEAGMON XE did ship support to properly normalize the CPU values for older releases of Linux. This shipped in September 2007 as VM64299 available for both the z/VM 5.2 and 5.3 versions of Performance Toolkit.
PTF UM32169 for z/VM 5.2 provides the base function for the formatted output collectors and provides an update for normalizing Linux data in the formatted output. PTF UM32170 for z/VM 5.3 provides the update for normalizing Linux data and provides support for mixed processor types in the formatted output. Also, while there are methods to normalize the old accounting information, it is still subject to some misleading in that the old method is exposed to skewing of time towards buckets. Bill Bitner - VM Performance Evaluation - IBM Endicott - 607-429-3286 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390