On Thu, Jul 14 2016 at 12:21am -0400,
Jon Bernard wrote:
> Do you have any intuition on where to start looking?
Joe asked me a very basic/obvious question: is block zeroing enabled?
(block zeroing is enabled by default -- you have to know to disable it)
If zeroing wasn't
On Thu, Jul 14 2016 at 12:21am -0400,
Jon Bernard wrote:
> * Mike Snitzer wrote:
> > On Mon, Jul 11 2016 at 4:44pm -0400,
> > Jon Bernard wrote:
> >
> > > Greetings,
> > >
> > > I have recently noticed a large difference in
* Mike Snitzer wrote:
> On Mon, Jul 11 2016 at 4:44pm -0400,
> Jon Bernard wrote:
>
> > Greetings,
> >
> > I have recently noticed a large difference in performance between thick
> > and thin LVM volumes and I'm trying to understand why that it the
On Tue, Jul 12 2016 at 11:29pm -0400,
Jon Bernard wrote:
> * Jack Wang wrote:
> > 2016-07-11 22:44 GMT+02:00 Jon Bernard :
> > > Greetings,
> > >
> > > I have recently noticed a large difference in performance between thick
>
* Zdenek Kabelac wrote:
> Dne 11.7.2016 v 22:44 Jon Bernard napsal(a):
> > Greetings,
> >
> > I have recently noticed a large difference in performance between thick
> > and thin LVM volumes and I'm trying to understand why that it the case.
> >
> > In summary, for the same
* Jack Wang wrote:
> 2016-07-11 22:44 GMT+02:00 Jon Bernard :
> > Greetings,
> >
> > I have recently noticed a large difference in performance between thick
> > and thin LVM volumes and I'm trying to understand why that it the case.
> >
> > In
On Mon, Jul 11 2016 at 4:44pm -0400,
Jon Bernard wrote:
> Greetings,
>
> I have recently noticed a large difference in performance between thick
> and thin LVM volumes and I'm trying to understand why that it the case.
>
> In summary, for the same FIO test (attached), I'm
Dne 11.7.2016 v 22:44 Jon Bernard napsal(a):
Greetings,
I have recently noticed a large difference in performance between thick
and thin LVM volumes and I'm trying to understand why that it the case.
In summary, for the same FIO test (attached), I'm seeing 560k iops on a
thick volume vs. 200k