OP seems to be MIA, but I'm also seeing higher than expected memory usage. This is actually showing up in both Ubuntu 15.10 and 16.04. I've attached screenshots of `cat proc/meminfo` from both an Ubuntu 15.10 Desktop and Ubuntu Mate 16.04.1 Desktop install.
The 15.10 VM has dynamic memory set to 512 MiB - 4096 MiB. Assigned memory is maxed out at 4096 MiB, memory demand is reported as 3604 MiB. The 16.04.1 VM has dynamic memory set to 512 MiB - 2048 MiB. Assigned memory is maxed out at 2048 MiB, memory demand is reported as 2088 MiB. Both of these are with the VM idling for days and nothing going on. The host computer has 16 GiB of memory, with 4.4 GiB available. Memory usage by host applications (other than VMs) is relatively light. ** Attachment added: "Ubuntu 15.10 Desktop /proc/meminfo" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584597/+attachment/4738363/+files/ubuntu_15.10_proc_mem_info_hyperv.png -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1584597 Title: Hyper-V Memory Ballooning re-broken in 16.04 Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Regression: #1294283 fixed memory ballooning in Hyper-V in 14.04, but the bug has returned in 16.04. Steps to reproduce: 1. Create Gen2 Hyper-V VM 2. Install Ubuntu 16.04 3. modprobe hv_balloon Memory usage according to Hyper-V Manager will not change This has been reproduced on 2 fresh Ubuntu Server 16.04 instances. I installed linux-generic-xenial on a 14.04 instance, rebooted, modprobe'd hv_balloon and memory usage in Hyper-V Manager reduced to the correct level. Environment: Host: Windows NanoServer 2016 Ubuntu Server 16.04 version_signature: `Ubuntu 4.4.0-21.37-generic 4.4.6` Ubuntu Server 14.04 version_signature: `Ubuntu 4.4.0-22.40~14.04.1-generic 4.4.8` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584597/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
