I'm currently experiencing a problem whereby load on one guest is adversely affecting load on other guests located on the same host. What I'm curious about is what best practices are there for optimizing a Linux guest.
Typically, the guests are either RHEL 4/5 or SLES 10/11. If they are RHEL, there is a good chance they are part of some oracle monolith such as peoplesoft and filling the role of webserver, appserver or database.
Thanks, Matt
With very few exceptions, rules for optimizing virtual guests are exactly the same as optimizing physical hosts -- profile your application and see where it's spending most of its time, then figure out how to make it run more efficiently. If you can't do anything about the app and you're concerned about QoS, your first step is to look into the best way to implement resource shares/reservations/limits appropriately for your environment -- this is exactly why they exist.