> > So, how can I estimate needed value of kern.vm.kmem.size?
> 
> How much ram do you have in the machine? On a 4.4-RC1 machine

I have 320M here.

> with 128MB of ram we don't have any problems getting dirhash
> to use almost all of it's 2MB:
> 
>         vfs.ufs.dirhash_maxmem: 2097152
>         vfs.ufs.dirhash_mem: 2085797
> 
> This is with the devault value for kern.vm.kmem.size. Maybe
> you could print the value your system is getting with:
> 
>         echo print vm_kmem_size |  gdb -k /kernel /dev/mem

You are absolutely right, it's using about 1/3 of RAM here 
(108875776 when I do not tune kern.vm.kmem.size). 
Hmm, my test seems to be incorrect somehow.
How can I see used amount of kernel malloc area?

Eugene Grosbein

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