I’m playing with ZFS for a while now and I read that compression should be turned on, on pretty much anything that has a decent CPU. Most of our data is already compressed, so our idea was, why take the speed hit for no real advantage … A second machine was bought, and I decided to ignore my colleague’s and try to copy our badly to compress data and see what ratio’s are…
You can see compression using :
# zfs get all | grep compr huginn compressratio 1.33x - huginn compression lz4 local huginn/stuff compressratio 1.21x - huginn/stuff compression lz4 inherited from huginn huginn/statstuff compressratio 1.35x - huginn/statstuff compression lz4 inherited from huginn
21-30% compression … for uncompressable data that is pretty nice ! So without delay : activate compression like this :
zfs set compression=lz4 dataset
Jeej for zfs!