[OpenIndiana-discuss] ZFS pool slow as molasses

[Brett Dikeman]

On Thu, Oct 7, 2010 at 4:57 AM, Thorsten Heit <thorsten.heit at vkb.de> wrote:

> DDT-sha256-zap-unique: 5 entries, size 123986329 on disk, 118375219 in
> core
>
> DDT histogram (aggregated over all DDTs):
>
> bucket              allocated                       referenced
> ______   ______________________________   ______________________________
> refcnt   blocks   LSIZE   PSIZE   DSIZE   blocks   LSIZE   PSIZE   DSIZE
> ------   ------   -----   -----   -----   ------   -----   -----   -----
>     1        5      5K      5K   6.66K        5      5K      5K   6.66K

> What does this mean?

I believe it means you have five blocks of data in the de-duplication
data table, all unique (refcnt = 1.)  Probably a dotfile or something
that you didn't delete when you moved your data off.

-Brett