High Memory consumed when Dynamic memory is Enabled in Hyper-V Machine

Question

I have created a VM using Hyper-V with Enabling Dynamic Memory option on a 2012R2 server machine.
After creating the VM I see that the memory consumption of the VM machine as 85%.
Would like to know if any efficient way to use "Enable Dynamic Memory" option while configuring the VM so that the memory consumption will be reduced.

Answer 1

As others have said it depends on the application being used. Also how do you have your guests configured with Startup memory, minimum memory and maximum memory? If your application is poorly written and has a memory leak, you will see dynamic memory just
grow. If the application is just heavy because of traffic or caching it will use lots of memory.
Example for me is a web application that is proprietary. during no usage it might be using roughly 400 MB on the server, but then when it gets used it will grow. I've seen some webservers hit 10 GB as for other ones grow maybe to a meg. After things calm
down a bit I notice memory returns back down to a 400 MB to 700 MB level. That is just how my application is and how i serve it up to customers. I had to track all that stuff prior. You can use Microsoft MAP to help with your dynamic memory settings.
For SQL server it can be done as well, but as Darren said before you might not want to do it. In my environment i do it, but I have tweaked things to work for me. Example is tweaking database memory usage to match startup memory OS it appears static, but
then leaving dynamic for processes that fire outside of SQL server. Here is a
guide for SQL server and dynamic memory.