Re: Setting "zfs_arc_max" value in FreeBSD 8.
On Tue, Jan 19, 2010 at 6:19 AM, 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, > (0x78000 or 32212254720 bytes). Set the zfs:zfs_arc_max parameter in > the > /etc/system file: > > set zfs:zfs_arc_max = 0x78000 > > 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. > > set in /etc/sysctl.conf man sysctl.conf -- Jorge Andrés Medina Oliva. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: Setting "zfs_arc_max" value in FreeBSD 8.
On Tue, 19 Jan 2010 14:49:15 +0530, 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, > (0x78000 or 32212254720 bytes). Set the zfs:zfs_arc_max parameter in the > /etc/system file: > > set zfs:zfs_arc_max = 0x78000 > > 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 have to use /boot/loader.conf in FreeBSD. Here's a snippet from mine, for example: # Mount the root filesystem from ZFS. vfs.root.mountfrom="zfs:kobe/bootfs" # ZFS tuning. vm.kmem_size="800M" vm.kmem_size_max="800M" vfs.zfs.arc_max="150M" vfs.zfs.vdev.cache.size="15M" vfs.zfs.prefetch_disable="1" # Autoloaded modules. zfs_load="YES" You can read more about the ZFS support of FreeBSD (including options like these) at our wiki: http://wiki.freebsd.org/ZFS http://wiki.freebsd.org/ZFSQuickStartGuide ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
