Setting "zfs_arc_max" value in FreeBSD 8.

[Ivan Voras]

On 01/19/10 10:19, Sherin George wrote:
> Hello,
>
> I am trying to tune ZFS file system by setting "zfs_arc_max" value in
> FreeBSD 8.
>
> In solaris, it is achieved like this
>
> =================================================
> For example, if an application needs 5 GBytes of memory on a system with
> 36-GBytes of memory, you could set the arc maximum to 30 GBytes,
> (0x780000000 or 32212254720 bytes). Set the zfs:zfs_arc_max parameter in the
> /etc/system file:
>
> set zfs:zfs_arc_max = 0x780000000
>
> or
>
> set zfs:zfs_arc_max = 32212254720
> =================================================
>
> But, I couldn't find /etc/system file in FreeBSD.
>
> Could some one please guide me to correctly configure "zfs_arc_max" in
> FreeBSD 8.

You should probably start here:

http://wiki.freebsd.org/ZFSTuningGuide

and more generally, here:

http://wiki.freebsd.org/ZFS