Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-21 Thread Duncan Thomas
On 22 September 2016 at 00:23, John Griffith wrote: > > Yes, that is a sizeable chunk of the solution. The remaining components > are how to coordinate with Nova (compute nodes) and figuring out if we just > use c-vol as is, or if we come up with some form of a paired

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-21 Thread John Griffith
On Wed, Sep 21, 2016 at 12:57 AM, Michał Dulko wrote: > On 09/20/2016 05:48 PM, John Griffith wrote: > > On Tue, Sep 20, 2016 at 9:06 AM, Duncan Thomas > > > wrote: > > > > On 20 September 2016 at 16:24, Nikita

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-21 Thread Michał Dulko
On 09/20/2016 05:48 PM, John Griffith wrote: > On Tue, Sep 20, 2016 at 9:06 AM, Duncan Thomas > > wrote: > > On 20 September 2016 at 16:24, Nikita Konovalov > > wrote: > >

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-20 Thread John Griffith
On Tue, Sep 20, 2016 at 9:06 AM, Duncan Thomas wrote: > On 20 September 2016 at 16:24, Nikita Konovalov > wrote: > >> Hi, >> >> From Sahara (and Hadoop workload in general) use-case the reason we used >> BDD was a complete absence of any

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-20 Thread Duncan Thomas
On 20 September 2016 at 16:24, Nikita Konovalov wrote: > Hi, > > From Sahara (and Hadoop workload in general) use-case the reason we used > BDD was a complete absence of any overhead on compute resources > utilization. > > The results show that the LVM+Local target

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-20 Thread Nikita Konovalov
Hi, >From Sahara (and Hadoop workload in general) use-case the reason we used BDD was a complete absence of any overhead on compute resources utilization. The results show that the LVM+Local target perform pretty close to BDD in synthetic tests. It's a good sign for LVM. It actually shows that

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-19 Thread John Griffith
On Mon, Sep 19, 2016 at 2:54 PM, Duncan Thomas wrote: > I think there's some mileage in some further work on adding local LVM, > since things like striping/mirroring for performace can be done. We can > prototype it and get the numbers before even thinking about merging

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-19 Thread Duncan Thomas
I think there's some mileage in some further work on adding local LVM, since things like striping/mirroring for performace can be done. We can prototype it and get the numbers before even thinking about merging though - as additions to an already fully featured driver. these seem more worthwhile a

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-19 Thread John Griffith
On Mon, Sep 19, 2016 at 12:01 PM, Ivan Kolodyazhny wrote: > + [sahara] because they are primary consumer of the BDD. > > John, > Thanks for the answer. My comments are inline. > > Regards, > Ivan Kolodyazhny, > http://blog.e0ne.info/ > > On Mon, Sep 19, 2016 at 4:41 PM, John

Re: [openstack-dev] [cinder][sahara] LVM vs BDD drivers performance tests results

2016-09-19 Thread Ivan Kolodyazhny
+ [sahara] because they are primary consumer of the BDD. John, Thanks for the answer. My comments are inline. Regards, Ivan Kolodyazhny, http://blog.e0ne.info/ On Mon, Sep 19, 2016 at 4:41 PM, John Griffith wrote: > > > On Mon, Sep 19, 2016 at 4:43 AM, Ivan