Re: 7-BETA3 everyday reboot

On 12/10/07, Michael Haro <mharo_at_freebsd.org> wrote:
>
>
>
> On 12/10/07, Alexandre Biancalana <biancalana_at_gmail.com> wrote:
> > On 12/7/07, Michael Haro <mharo_at_freebsd.org> wrote:
> > >
> > >
> > > > > I have found that turning off zil and prefetch seem to keep things
> > > > > happier on one of the heavily loaded servers that I look after.
> > > > > It also appears to prevent a deadlock under very heavy load -
> something
> > > > > I've not yet had time to debug.
> > > > > Try adding:
> > > > >
> > > > > vfs.zfs.zil_disable=1
> > > > > vfs.zfs.prefetch_disable="1"
> > > > >
> > > > > to /boot/loader.conf
> > > > >
> > > > > and let us know if it makes a difference.
> > > >
> > > > Added now only
> > > >
> > > > vfs.zfs.prefetch_disable="1"
> > > >
> > > >
> > > > I let you know the result.
> > >
> > > Is the result promising?
> > >
> > >
> > Yes ! The machine does not reboot anymore !
>
> What combination of settings did you have to do to make it stable?  I tried
> setting vfs.zfs.prefetch_disable="1' in loader.conf and my machine still
> panics within 20 minutes during (I think) large file transfers.
>


Here is my /boot/loader.conf:

kern.maxdsiz="2G"       # Set the max data size to 4GB
kern.maxssiz="1G"       # Set the max stack size 2GB

vfs.zfs.prefetch_disable="1"
vfs.zfs.arc_max="1G"

vm.kmem_size_max="1500M"
vm.kmem_size="1500M"

kern.ipc.nmbclusters="32768"