additional clarification ...
On Jan 14, 2010, at 8:49 AM, Richard Elling wrote:
> On Jan 14, 2010, at 6:41 AM, Gary Mills wrote:
>
>> On Thu, Jan 14, 2010 at 01:47:46AM -0800, Roch wrote:
>>>
>>> Gary Mills writes:
Yes, I understand that, but do filesystems have separate queues of an
On Jan 14, 2010, at 6:41 AM, Gary Mills wrote:
> On Thu, Jan 14, 2010 at 01:47:46AM -0800, Roch wrote:
>>
>> Gary Mills writes:
>>>
>>> Yes, I understand that, but do filesystems have separate queues of any
>>> sort within the ZIL? If not, would it help to put the database
>>> filesystems into
On Thu, Jan 14, 2010 at 01:47:46AM -0800, Roch wrote:
>
> Gary Mills writes:
> >
> > Yes, I understand that, but do filesystems have separate queues of any
> > sort within the ZIL? If not, would it help to put the database
> > filesystems into a separate zpool?
> >
>
> The slog device is
On Thu, Jan 14, 2010 at 10:58:48AM +1100, Daniel Carosone wrote:
> On Wed, Jan 13, 2010 at 08:21:13AM -0600, Gary Mills wrote:
> > Yes, I understand that, but do filesystems have separate queues of any
> > sort within the ZIL?
>
> I'm not sure. If you can experiment and measure a benefit,
> unders
Gary Mills writes:
> On Tue, Jan 12, 2010 at 01:56:57PM -0800, Richard Elling wrote:
> > On Jan 12, 2010, at 12:37 PM, Gary Mills wrote:
> >
> > > On Tue, Jan 12, 2010 at 11:11:36AM -0600, Bob Friesenhahn wrote:
> > >> On Tue, 12 Jan 2010, Gary Mills wrote:
> > >>>
> > >>> Is moving the
On Wed, Jan 13, 2010 at 08:21:13AM -0600, Gary Mills wrote:
> Yes, I understand that, but do filesystems have separate queues of any
> sort within the ZIL?
I'm not sure. If you can experiment and measure a benefit,
understanding the reasons is helpful but secondary. If you can't
experiment so eas
On Tue, Jan 12, 2010 at 01:56:57PM -0800, Richard Elling wrote:
> On Jan 12, 2010, at 12:37 PM, Gary Mills wrote:
>
> > On Tue, Jan 12, 2010 at 11:11:36AM -0600, Bob Friesenhahn wrote:
> >> On Tue, 12 Jan 2010, Gary Mills wrote:
> >>>
> >>> Is moving the databases (IMAP metadata) to a separate ZF
On Jan 12, 2010, at 12:37 PM, Gary Mills wrote:
> On Tue, Jan 12, 2010 at 11:11:36AM -0600, Bob Friesenhahn wrote:
>> On Tue, 12 Jan 2010, Gary Mills wrote:
>>>
>>> Is moving the databases (IMAP metadata) to a separate ZFS filesystem
>>> likely to improve performance? I've heard that this is imp
On Tue, Jan 12, 2010 at 12:37:30PM -0800, Gary Mills wrote:
> On Tue, Jan 12, 2010 at 11:11:36AM -0600, Bob Friesenhahn wrote:
> > On Tue, 12 Jan 2010, Gary Mills wrote:
> > >
> > >Is moving the databases (IMAP metadata) to a separate ZFS filesystem
> > >likely to improve performance? I've heard t
On Tue, Jan 12, 2010 at 11:11:36AM -0600, Bob Friesenhahn wrote:
> On Tue, 12 Jan 2010, Gary Mills wrote:
> >
> >Is moving the databases (IMAP metadata) to a separate ZFS filesystem
> >likely to improve performance? I've heard that this is important, but
> >I'm not clear why this is.
>
> There is
On Tue, 12 Jan 2010, Gary Mills wrote:
Is moving the databases (IMAP metadata) to a separate ZFS filesystem
likely to improve performance? I've heard that this is important, but
I'm not clear why this is.
There is an obvious potential benefit in that you are then able to
tune filesystem para
I'm working with a Cyrus IMAP server running on a T2000 box under
Solaris 10 10/09 with current patches. Mailboxes reside on six ZFS
filesystems, each containing about 200 gigabytes of data. These are
part of a single zpool built on four Iscsi devices from our Netapp
filer.
One of these ZFS file
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