ZFS tweaks

[shaman]

So, today I did a ZFS install on Gentoo and Funtoo which of course was more easier on Funtoo due to not having to compile a kernel. Now I'm on the search for performance tweaks. I have notice "for me at least", that a emerge -avuDN --with-bdeps=y @world is a little bit more slower than normal. Would like to leave this thread open for related discussion to this topic. If I find something not noted in the wiki will post here.

[Peje]

Hi easiest and maybe best way to speed up zfs is to add an extra ssd (often used  intel n3500 or n3700) as zil and log device. There are many guides about that on the net.

cu Peje

[Chris Kurlinski]

Add ram before ssd l2arc or zil.

 

Then if the performance is still low, add the ssd's.

 

ZFS loves ram and cpu power.

 

I have dual e3-2620's and 32G's and have not needed a l2arc or zil, running 2-6 kvm's on vdevs, no problems.