@l-ububtu-3 What was the procedure on the reinstall? Based on my results, I will add some more checks to our long-term testing efforts to see if ballooning messages are being dropped.
An explanation of Hyper-V dynamic memory in general is here: https://technet.microsoft.com/en-us/library/hh831766(v=ws.11).aspx For the Linux driver the process is relatively straightforward. When there's less memory pressure than what is allocated, the guest balloon driver allocates buffers to itself and releases that memory to Hyper-V. As a result, the Linux guest will think the memory is there but in use, but Hyper-V will report a lower assigned memory. When there is more pressure than what is available, free, first the balloon driver will request memory and release the buffers it had allocated when they are assigned. If there are no more buffers available, Hyper-V will assign more memory and the driver will "hot add" that memory to the guest. If there is no pressure, nothing will change. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1584597 Title: Hyper-V Memory Ballooning re-broken in 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584597/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
