How about add an option to keep hugepages on vm stop ?

[MasterPhi]

Hi,

Currently I'm using hugepages for better performance, they are allocated manually on boot.
However, when vm stop, hugepages are freed and the memory space could be used by other applications, sometimes there are not enough continus memory pages to allocate hugepage, and vm fail to start.

Maybe it's useful to add an option to keep hugepages on vm stop ?

 

[aaron]

Hi, can you please create an enhancement request in our bugtracker? [0] Component should probably be Qemu.

This way we can keep track of it. Otherwise, it will be lost in the fast churn here in the forum.

Thanks

[0] https://bugzilla.proxmox.com/enter_bug.cgi?product=pve

 

[MasterPhi]

Hi,
This patch has been hanging around for a while, any idea when it could be merged ?

https://pve.proxmox.com/pipermail/pve-devel/2020-February/041714.html

 

[soupdiver]

Is this resolved by now? I landed here because my node fails allocating hugepages after I stopped a VM that uses those

 

[Neobin]

For reference:
https://bugzilla.proxmox.com/show_bug.cgi?id=2570

Is this resolved by now? I landed here because my node fails allocating hugepages after I stopped a VM that uses those

See keephugepages:
https://pve.proxmox.com/pve-docs/qm.1.html