Are you asking on Qemu list about your conversations with a different
software?
Maybe ChatGPT project has a support or users mailing list, and/or a
bugtracker to file issues.
El 16/1/24 a les 16:57, Christopher Pereira ha escrit:
1) Can someone please confirm this response from ChatGPT?
# Me:
is the ram used by a qemu-kvm VM as file cache swapped on the host when
the host is low on ram?
# ChatGPT:
No, the RAM used by a QEMU-KVM (Kernel-based Virtual Machine) VM as file
cache is not directly swapped on the host when the host is low on RAM.
In a virtualized environment, the host manages the physical memory, and
each VM operates within its allocated virtual memory space.
When the host is low on RAM, it may resort to swapping out its own
processes or data to disk to free up memory. However, the content of the
VM's RAM, including file cache, is typically managed separately. The
host's memory management doesn't directly affect the VM's memory content.
It's worth noting that the VM's memory may be swapped within the VM
itself if it's configured to use swap space. This is independent of what
is happening on the host. If the VM's own memory management decides to
swap some of its content to disk, it will do so within the virtualized
environment.
2) If ChatGPT is right, I wonder how the host can know which RAM is used
as file cache by the VM in order to treat it separately.
3) Related. Can you also please confirm my comments posted here some
years ago:
https://unix.stackexchange.com/a/702729/526077
https://forum.proxmox.com/threads/vm-swap-best-practice.126514/
--
Narcis Garcia
