Hi Darryl, Is the database also running on a VM? My experience with "problematic applications on VMs" hasn't been related to the application itself (Tomcat, BIND, Apache, etc.) but moreso whether they generate high volumes of local storage I/O (like a database using local disks). The impact this can have can also be magnified if your VM disks aren't properly aligned (a common mistake in many older VM deployments).
The vendor should also be providing some form of justification for their statements. Depending on your virtualization platform of choice, there may be various utilities you can use to analyze the performance of the virtualization host itself to help narrow down where bottlenecks may be occurring. Regards, ------Original Message------ From: Darryl Lewis To: Tomcat Users List ReplyTo: Tomcat Users List Subject: Tomcat on a Linux virtual machine Sent: Apr 15, 2011 23:18 I have an application (commercial) running on a virtual instance of Linux talking to a Postgres database. We are continually getting locks on the DB that are crashing the app. I think it's just bad programming on the suppliers side, but the supplier has latched onto the idea that it is because it is running on a virtual machine. Has any experienced any problems running Tomcat on a virtual machine similar to this? Sent from my BlackBerry device
