Proxmox uses a lot of RAM
- Thread starter nevz00
- Start date
What you what to fix?
ZFS use a lot of Ram. You can tune it see.
https://pve.proxmox.com/wiki/ZFS:_Tips_and_Tricks
But at lest ZFS need 4GB other way it will not work proper.
If you do not like to send Ram for this propose you have to change the File system.
ZFS use a lot of Ram. You can tune it see.
https://pve.proxmox.com/wiki/ZFS:_Tips_and_Tricks
But at lest ZFS need 4GB other way it will not work proper.
If you do not like to send Ram for this propose you have to change the File system.
I think we need a special wiki article on the memory topic in general. More and more posts ask the same thing:
http://www.linuxatemyram.com/
http://www.linuxatemyram.com/
Why do you want to limit the ram consumption? The best performance will you get will no free RAM, because everything you need is already in your main memory. "free" RAM is a concept from Windows, where the RAM is not actually free, but shown as free which suggests something good. Free RAM means you do not need it and therefore you payed to much. RAM needs to be used. You only have to watch out for swapping, which is indeed bad.
The answer to your question about "limit the consumption" (with respect to ZFS) was already given, please read the links already present here.
The answer to your question about "limit the consumption" (with respect to ZFS) was already given, please read the links already present here.
IIRC in default configuration ZFS can use up to half of your RAM (or am I mistaking it for tmpfs? not sure now). Anyway, ZFS is monitoring RAM usage, and if system needs more than is available (i.e. to start new VM) ZFS will release part of RAM being used by arc. That's the way every disk-cache works...
You can use zfs_arc_max to limit amount of memory zfs can use, but be careful. ZFS needs a lot of memory to work properly. I would not recommend to set less than 8GB for arc cache even on slightly loaded systems...
You can use zfs_arc_max to limit amount of memory zfs can use, but be careful. ZFS needs a lot of memory to work properly. I would not recommend to set less than 8GB for arc cache even on slightly loaded systems...