Enable huge pages in lxc container

[Petr Konderla]

Hi,
how can I enable huge pages on container? Need setup for DBs.

lxc-container~# sysctl -w vm.nr_hugepages=102400
sysctl: setting key "vm.nr_hugepages", ignoring: Read-only file system

Thanks

 

[shanreich]

Maybe this thread can help you? https://discuss.linuxcontainers.org/t/lxd-3-22-has-been-released/7027

edit: okay, sorry this is is for LXD, not LXC got it mixed up..

 

[Eschin]

Hi,
how can I enable huge pages on container? Need setup for DBs.

lxc-container~# sysctl -w vm.nr_hugepages=102400
sysctl: setting key "vm.nr_hugepages", ignoring: Read-only file system

Thanks

Were you able to get this working?

I was able to enable huge pages in an LXC container for PostGres, by setting vm.nr_hugepages on the proxmox host itself. I also disabled Transparent Huge Pages on the proxmox host, via grub cmdline options.

You can watch cat /proc/meminfo on host (shows identical reading out lxc) to monitor huge page allocation.

 

[Petr Konderla]

Were you able to get this working?

I was able to enable huge pages in an LXC container for PostGres, by setting vm.nr_hugepages on the proxmox host itself. I also disabled Transparent Huge Pages on the proxmox host, via grub cmdline options.

You can watch cat /proc/meminfo on host (shows identical reading out lxc) to monitor huge page allocation.

Hi, yes - I did exactly what you describe (file /etc/sysctl.conf on the Proxmox server itself)... Thanks