[ovirt-users] Using zRam with oVirt Nodes

[Fernando Frediani]

Hello it's the same thing zswap.

The use case is to be able to put more stuff in a single host without it 
need needing to swap to slow disks. You sacrifice CPU and avoid a lot 
slower swap to disk.

Fernando

On 30/12/2016 16:41, Yaniv Kaul wrote:
>
>
> On Dec 30, 2016 7:06 PM, "Fernando Frediani" 
> <fernando.frediani at upx.com.br <mailto:fernando.frediani at upx.com.br>> 
> wrote:
>
>     Hello folks.
>
>     On simple libvirt/KVM hosts in order to improve RAM usage and
>     avoid swap to disk I use zRam with swap to RAM technique. So
>     create half of amount of host memory in zRam disk divided by the
>     number of CPU cores. Works pretty well.
>
>     Has anyone tried it with oVirt Nodes or even has it been
>     considered as a feature to simply turn on/off ?
>
>
> What exactly is the use case?
> I'd use zram for temporary disks, using the VDSM hook for them.
> I think you are referring to zswap?
> Y.
>
>
>     Thanks
>     Fernando
>
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