Memory demanded is higher than the assigned memory for the CentOS machine running on Hyper V RRS feed

  • Question

  • Hi,

    We have a customer running Aruba Airwave application which is built on CentOS 6 running on a Hyper V server.

    We have provided 66 GB of RAM for the server and dynamic memory is enabled.

    Once the instance is powered on we could notice the memory demand spike up to 77 GB (higher than the assigned memory)

    But when we login to the Airwave server(centOS), we could notice only the half of the assigned memory is used and the remaining half is free. 

    We had provided 66 GB RAM to the application, though it did not require so much. The Airwave application's recommended memory is quite less than 66 GB.

    please let us know if this is an issue with the Hyper V or the CentOS used on Hyper V 

    Monday, May 4, 2020 3:18 PM

All replies

  • In my opinion, CentOS 6 kernel is really old and it might be missing a lot of the improvements to handle memory allocations.

    Try and do a test with CentOS 7 and see how the memory is handled there. (even so, 3.10 kernel is still not the best, but at least it has a lot of backports)

    Thursday, May 7, 2020 7:34 AM