2011-12-15 22:44, milosz цкщеу:
There are a few metaslab-related tunables that can be tweaked as well.
                                        - Bill


For the sake of completeness, here are the relevant lines
I have in /etc/system:

******
* fix up metaslab min size (recent default ~10Mb seems bad,
* recommended return to 4Kb, we'll do 4*8K)
* greatly increases write speed in filled-up pools
set zfs:metaslab_min_alloc_size = 0x8000
set zfs:metaslab_smo_bonus_pct = 0xc8
******

These values were described in greater detail on the list
this summer, I think.

HTH,
//Jim
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