Has anyone had experience running SuSE on a Dell PowerEdge 1750. Or a dual Xeon with hyperthreading. We have installed Suse SLE 9.0 with no problem but are seeing poor performance. I/O operations are much faster than our legacy hardware (PowerEdge 500) but processor intensive operations (ie garbage collection and searching documents) perform much worse. I know that these are vague criteria, but I'm just trying to get a handle on general configuration issues with dual processor / hyperthreaded machines and the latest Suse distros with kernel 2.6. For example: the install set my grub arguments to have acpi=off. Some of my reading suggests that I may want to change this to: acpi=ht What are the ramifications of doing this? It turns on hyperthreading, but do I need to do anything to my kernel before doing so? The application in question is a Java web application running on Tomcat. Any insight would be much appreciated. Thank you, Christopher Farnham Senior Consultant at Wrycan, Inc. chris.farnham@wrycan.com http://www.wrycan.com