vm.kmem_size_scale recommendation for ZFS

[Aristedes Maniatis]

On 5/10/11 12:24 AM, Andriy Gapon wrote:
> on 04/10/2011 07:10 Aristedes Maniatis said the following:
>> B. vm.kmem_size_scale=0.66
>
> This parameter is integer.

Ah, of course. Would it then be the recommendation that kmem be set manually to 150% of physical memory, or should it normally be left to its default in a machine with a medium amount of RAM (24Gb) and heavy usage of ZFS?

I've googled but I just can't understand what the purpose would be of setting kmem to greater than physical memory. But if it helps...

Ari



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