How much memory does ZFS use?

[Yuri]

On 08/20/2011 11:45, Gary Gatten wrote:
> Zfs isn't a typical daemon/process. That's like saying databased is a memory hog cause it needs a lot of ram for caching.

I know it's a kernel module.

>
> Zfs ram requirements will depend on your file system i/o load, types/sizes of files, types and rates of file system ops, etc.  512MB may be fine, or you may need 4GB for optimum performance.

I meant mostly, for the same type of FS access, how does ZFS memory 
consumption compare with situation if I used UFS?

Also how can I see what memory consumption is for each kernel module?

Yuri