Re: Gluster and ZFS: how much RAM?

[Darrell Budic <budic@xxxxxxxxxxxxxxxx>]

What are you looking at to determine the hit rate? l2_hits & l2_misses, or hits & misses?

I’ve got a small cluster with 16G boxes and I’m about on those numbers for the l2arc, my bigger group with dedicated storage servers uses more, but I’d like to do more analysis on it and see how effective it is.

On Feb 23, 2017, at 4:53 AM, David Gossage <dgossage@xxxxxxxxxxxxxxxxxx> wrote:

On Thu, Feb 23, 2017 at 3:57 AM, Gandalf Corvotempesta <gandalf.corvotempesta@xxxxxxxxx> wrote:

How much RAM is suggested for gluster with ZFS (no dedup) ?

Are 16GB enough with an SSD L2ARC?

8gb for the arc, 8gb for gluster and OS.

That's what my systems run though each of my nodes only has @3TB of storage.  Current tests among zfs used as VM storage seems to be that l2arc sits almost wholly unused though.  I removed mine since it had such a very low hit rate. 

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